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Technical: Taproot: Why Activate?

This is a follow-up on https://old.reddit.com/Bitcoin/comments/hqzp14/technical_the_path_to_taproot_activation/
Taproot! Everybody wants it!! But... you might ask yourself: sure, everybody else wants it, but why would I, sovereign Bitcoin HODLer, want it? Surely I can be better than everybody else because I swapped XXX fiat for Bitcoin unlike all those nocoiners?
And it is important for you to know the reasons why you, o sovereign Bitcoiner, would want Taproot activated. After all, your nodes (or the nodes your wallets use, which if you are SPV, you hopefully can pester to your wallet vendoimplementor about) need to be upgraded in order for Taproot activation to actually succeed instead of becoming a hot sticky mess.
First, let's consider some principles of Bitcoin.
I'm sure most of us here would agree that the above are very important principles of Bitcoin and that these are principles we would not be willing to remove. If anything, we would want those principles strengthened (especially the last one, financial privacy, which current Bitcoin is only sporadically strong with: you can get privacy, it just requires effort to do so).
So, how does Taproot affect those principles?

Taproot and Your /Coins

Most HODLers probably HODL their coins in singlesig addresses. Sadly, switching to Taproot would do very little for you (it gives a mild discount at spend time, at the cost of a mild increase in fee at receive time (paid by whoever sends to you, so if it's a self-send from a P2PKH or bech32 address, you pay for this); mostly a wash).
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash, so the Taproot output spends 12 bytes more; spending from a P2WPKH requires revealing a 32-byte public key later, which is not needed with Taproot, and Taproot signatures are about 9 bytes smaller than P2WPKH signatures, but the 32 bytes plus 9 bytes is divided by 4 because of the witness discount, so it saves about 11 bytes; mostly a wash, it increases blockweight by about 1 virtual byte, 4 weight for each Taproot-output-input, compared to P2WPKH-output-input).
However, as your HODLings grow in value, you might start wondering if multisignature k-of-n setups might be better for the security of your savings. And it is in multisignature that Taproot starts to give benefits!
Taproot switches to using Schnorr signing scheme. Schnorr makes key aggregation -- constructing a single public key from multiple public keys -- almost as trivial as adding numbers together. "Almost" because it involves some fairly advanced math instead of simple boring number adding, but hey when was the last time you added up your grocery list prices by hand huh?
With current P2SH and P2WSH multisignature schemes, if you have a 2-of-3 setup, then to spend, you need to provide two different signatures from two different public keys. With Taproot, you can create, using special moon math, a single public key that represents your 2-of-3 setup. Then you just put two of your devices together, have them communicate to each other (this can be done airgapped, in theory, by sending QR codes: the software to do this is not even being built yet, but that's because Taproot hasn't activated yet!), and they will make a single signature to authorize any spend from your 2-of-3 address. That's 73 witness bytes -- 18.25 virtual bytes -- of signatures you save!
And if you decide that your current setup with 1-of-1 P2PKH / P2WPKH addresses is just fine as-is: well, that's the whole point of a softfork: backwards-compatibility; you can receive from Taproot users just fine, and once your wallet is updated for Taproot-sending support, you can send to Taproot users just fine as well!
(P2WPKH and P2WSH -- SegWit v0 -- addresses start with bc1q; Taproot -- SegWit v1 --- addresses start with bc1p, in case you wanted to know the difference; in bech32 q is 0, p is 1)
Now how about HODLers who keep all, or some, of their coins on custodial services? Well, any custodial service worth its salt would be doing at least 2-of-3, or probably something even bigger, like 11-of-15. So your custodial service, if it switched to using Taproot internally, could save a lot more (imagine an 11-of-15 getting reduced from 11 signatures to just 1!), which --- we can only hope! --- should translate to lower fees and better customer service from your custodial service!
So I think we can say, very accurately, that the Bitcoin principle --- that YOU are in control of your money --- can only be helped by Taproot (if you are doing multisignature), and, because P2PKH and P2WPKH remain validly-usable addresses in a Taproot future, will not be harmed by Taproot. Its benefit to this principle might be small (it mostly only benefits multisignature users) but since it has no drawbacks with this (i.e. singlesig users can continue to use P2WPKH and P2PKH still) this is still a nice, tidy win!
(even singlesig users get a minor benefit, in that multisig users will now reduce their blockchain space footprint, so that fees can be kept low for everybody; so for example even if you have your single set of private keys engraved on titanium plates sealed in an airtight box stored in a safe buried in a desert protected by angry nomads riding giant sandworms because you're the frickin' Kwisatz Haderach, you still gain some benefit from Taproot)
And here's the important part: if P2PKH/P2WPKH is working perfectly fine with you and you decide to never use Taproot yourself, Taproot will not affect you detrimentally. First do no harm!

Taproot and Your Contracts

No one is an island, no one lives alone. Give and you shall receive. You know: by trading with other people, you can gain expertise in some obscure little necessity of the world (and greatly increase your productivity in that little field), and then trade the products of your expertise for necessities other people have created, all of you thereby gaining gains from trade.
So, contracts, which are basically enforceable agreements that facilitate trading with people who you do not personally know and therefore might not trust.
Let's start with a simple example. You want to buy some gewgaws from somebody. But you don't know them personally. The seller wants the money, you want their gewgaws, but because of the lack of trust (you don't know them!! what if they're scammers??) neither of you can benefit from gains from trade.
However, suppose both of you know of some entity that both of you trust. That entity can act as a trusted escrow. The entity provides you security: this enables the trade, allowing both of you to get gains from trade.
In Bitcoin-land, this can be implemented as a 2-of-3 multisignature. The three signatories in the multisgnature would be you, the gewgaw seller, and the escrow. You put the payment for the gewgaws into this 2-of-3 multisignature address.
Now, suppose it turns out neither of you are scammers (whaaaat!). You receive the gewgaws just fine and you're willing to pay up for them. Then you and the gewgaw seller just sign a transaction --- you and the gewgaw seller are 2, sufficient to trigger the 2-of-3 --- that spends from the 2-of-3 address to a singlesig the gewgaw seller wants (or whatever address the gewgaw seller wants).
But suppose some problem arises. The seller gave you gawgews instead of gewgaws. Or you decided to keep the gewgaws but not sign the transaction to release the funds to the seller. In either case, the escrow is notified, and if it can sign with you to refund the funds back to you (if the seller was a scammer) or it can sign with the seller to forward the funds to the seller (if you were a scammer).
Taproot helps with this: like mentioned above, it allows multisignature setups to produce only one signature, reducing blockchain space usage, and thus making contracts --- which require multiple people, by definition, you don't make contracts with yourself --- is made cheaper (which we hope enables more of these setups to happen for more gains from trade for everyone, also, moon and lambos).
(technology-wise, it's easier to make an n-of-n than a k-of-n, making a k-of-n would require a complex setup involving a long ritual with many communication rounds between the n participants, but an n-of-n can be done trivially with some moon math. You can, however, make what is effectively a 2-of-3 by using a three-branch SCRIPT: either 2-of-2 of you and seller, OR 2-of-2 of you and escrow, OR 2-of-2 of escrow and seller. Fortunately, Taproot adds a facility to embed a SCRIPT inside a public key, so you can have a 2-of-2 Taprooted address (between you and seller) with a SCRIPT branch that can instead be spent with 2-of-2 (you + escrow) OR 2-of-2 (seller + escrow), which implements the three-branched SCRIPT above. If neither of you are scammers (hopefully the common case) then you both sign using your keys and never have to contact the escrow, since you are just using the escrow public key without coordinating with them (because n-of-n is trivial but k-of-n requires setup with communication rounds), so in the "best case" where both of you are honest traders, you also get a privacy boost, in that the escrow never learns you have been trading on gewgaws, I mean ewww, gawgews are much better than gewgaws and therefore I now judge you for being a gewgaw enthusiast, you filthy gewgawer).

Taproot and Your Contracts, Part 2: Cryptographic Boogaloo

Now suppose you want to buy some data instead of things. For example, maybe you have some closed-source software in trial mode installed, and want to pay the developer for the full version. You want to pay for an activation code.
This can be done, today, by using an HTLC. The developer tells you the hash of the activation code. You pay to an HTLC, paying out to the developer if it reveals the preimage (the activation code), or refunding the money back to you after a pre-agreed timeout. If the developer claims the funds, it has to reveal the preimage, which is the activation code, and you can now activate your software. If the developer does not claim the funds by the timeout, you get refunded.
And you can do that, with HTLCs, today.
Of course, HTLCs do have problems:
Fortunately, with Schnorr (which is enabled by Taproot), we can now use the Scriptless Script constuction by Andrew Poelstra. This Scriptless Script allows a new construction, the PTLC or Pointlocked Timelocked Contract. Instead of hashes and preimages, just replace "hash" with "point" and "preimage" with "scalar".
Or as you might know them: "point" is really "public key" and "scalar" is really a "private key". What a PTLC does is that, given a particular public key, the pointlocked branch can be spent only if the spender reveals the private key of the given public key to you.
Another nice thing with PTLCs is that they are deniable. What appears onchain is just a single 2-of-2 signature between you and the developemanufacturer. It's like a magic trick. This signature has no special watermarks, it's a perfectly normal signature (the pledge). However, from this signature, plus some datta given to you by the developemanufacturer (known as the adaptor signature) you can derive the private key of a particular public key you both agree on (the turn). Anyone scraping the blockchain will just see signatures that look just like every other signature, and as long as nobody manages to hack you and get a copy of the adaptor signature or the private key, they cannot get the private key behind the public key (point) that the pointlocked branch needs (the prestige).
(Just to be clear, the public key you are getting the private key from, is distinct from the public key that the developemanufacturer will use for its funds. The activation key is different from the developer's onchain Bitcoin key, and it is the activation key whose private key you will be learning, not the developer's/manufacturer's onchain Bitcoin key).
So:
Taproot lets PTLCs exist onchain because they enable Schnorr, which is a requirement of PTLCs / Scriptless Script.
(technology-wise, take note that Scriptless Script works only for the "pointlocked" branch of the contract; you need normal Script, or a pre-signed nLockTimed transaction, for the "timelocked" branch. Since Taproot can embed a script, you can have the Taproot pubkey be a 2-of-2 to implement the Scriptless Script "pointlocked" branch, then have a hidden script that lets you recover the funds with an OP_CHECKLOCKTIMEVERIFY after the timeout if the seller does not claim the funds.)

Quantum Quibbles!

Now if you were really paying attention, you might have noticed this parenthetical:
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash...)
So wait, Taproot uses raw 32-byte public keys, and not public key hashes? Isn't that more quantum-vulnerable??
Well, in theory yes. In practice, they probably are not.
It's not that hashes can be broken by quantum computes --- they're still not. Instead, you have to look at how you spend from a P2WPKH/P2PKH pay-to-public-key-hash.
When you spend from a P2PKH / P2WPKH, you have to reveal the public key. Then Bitcoin hashes it and checks if this matches with the public-key-hash, and only then actually validates the signature for that public key.
So an unconfirmed transaction, floating in the mempools of nodes globally, will show, in plain sight for everyone to see, your public key.
(public keys should be public, that's why they're called public keys, LOL)
And if quantum computers are fast enough to be of concern, then they are probably fast enough that, in the several minutes to several hours from broadcast to confirmation, they have already cracked the public key that is openly broadcast with your transaction. The owner of the quantum computer can now replace your unconfirmed transaction with one that pays the funds to itself. Even if you did not opt-in RBF, miners are still incentivized to support RBF on RBF-disabled transactions.
So the extra hash is not as significant a protection against quantum computers as you might think. Instead, the extra hash-and-compare needed is just extra validation effort.
Further, if you have ever, in the past, spent from the address, then there exists already a transaction indelibly stored on the blockchain, openly displaying the public key from which quantum computers can derive the private key. So those are still vulnerable to quantum computers.
For the most part, the cryptographers behind Taproot (and Bitcoin Core) are of the opinion that quantum computers capable of cracking Bitcoin pubkeys are unlikely to appear within a decade or two.
So:
For now, the homomorphic and linear properties of elliptic curve cryptography provide a lot of benefits --- particularly the linearity property is what enables Scriptless Script and simple multisignature (i.e. multisignatures that are just 1 signature onchain). So it might be a good idea to take advantage of them now while we are still fairly safe against quantum computers. It seems likely that quantum-safe signature schemes are nonlinear (thus losing these advantages).

Summary

I Wanna Be The Taprooter!

So, do you want to help activate Taproot? Here's what you, mister sovereign Bitcoin HODLer, can do!

But I Hate Taproot!!

That's fine!

Discussions About Taproot Activation

submitted by almkglor to Bitcoin [link] [comments]

[ Bitcoin ] Technical: Taproot: Why Activate?

Topic originally posted in Bitcoin by almkglor [link]
This is a follow-up on https://old.reddit.com/Bitcoin/comments/hqzp14/technical_the_path_to_taproot_activation/
Taproot! Everybody wants it!! But... you might ask yourself: sure, everybody else wants it, but why would I, sovereign Bitcoin HODLer, want it? Surely I can be better than everybody else because I swapped XXX fiat for Bitcoin unlike all those nocoiners?
And it is important for you to know the reasons why you, o sovereign Bitcoiner, would want Taproot activated. After all, your nodes (or the nodes your wallets use, which if you are SPV, you hopefully can pester to your wallet vendoimplementor about) need to be upgraded in order for Taproot activation to actually succeed instead of becoming a hot sticky mess.
First, let's consider some principles of Bitcoin.
I'm sure most of us here would agree that the above are very important principles of Bitcoin and that these are principles we would not be willing to remove. If anything, we would want those principles strengthened (especially the last one, financial privacy, which current Bitcoin is only sporadically strong with: you can get privacy, it just requires effort to do so).
So, how does Taproot affect those principles?

Taproot and Your /Coins

Most HODLers probably HODL their coins in singlesig addresses. Sadly, switching to Taproot would do very little for you (it gives a mild discount at spend time, at the cost of a mild increase in fee at receive time (paid by whoever sends to you, so if it's a self-send from a P2PKH or bech32 address, you pay for this); mostly a wash).
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash, so the Taproot output spends 12 bytes more; spending from a P2WPKH requires revealing a 32-byte public key later, which is not needed with Taproot, and Taproot signatures are about 9 bytes smaller than P2WPKH signatures, but the 32 bytes plus 9 bytes is divided by 4 because of the witness discount, so it saves about 11 bytes; mostly a wash, it increases blockweight by about 1 virtual byte, 4 weight for each Taproot-output-input, compared to P2WPKH-output-input).
However, as your HODLings grow in value, you might start wondering if multisignature k-of-n setups might be better for the security of your savings. And it is in multisignature that Taproot starts to give benefits!
Taproot switches to using Schnorr signing scheme. Schnorr makes key aggregation -- constructing a single public key from multiple public keys -- almost as trivial as adding numbers together. "Almost" because it involves some fairly advanced math instead of simple boring number adding, but hey when was the last time you added up your grocery list prices by hand huh?
With current P2SH and P2WSH multisignature schemes, if you have a 2-of-3 setup, then to spend, you need to provide two different signatures from two different public keys. With Taproot, you can create, using special moon math, a single public key that represents your 2-of-3 setup. Then you just put two of your devices together, have them communicate to each other (this can be done airgapped, in theory, by sending QR codes: the software to do this is not even being built yet, but that's because Taproot hasn't activated yet!), and they will make a single signature to authorize any spend from your 2-of-3 address. That's 73 witness bytes -- 18.25 virtual bytes -- of signatures you save!
And if you decide that your current setup with 1-of-1 P2PKH / P2WPKH addresses is just fine as-is: well, that's the whole point of a softfork: backwards-compatibility; you can receive from Taproot users just fine, and once your wallet is updated for Taproot-sending support, you can send to Taproot users just fine as well!
(P2WPKH and P2WSH -- SegWit v0 -- addresses start with bc1q; Taproot -- SegWit v1 --- addresses start with bc1p, in case you wanted to know the difference; in bech32 q is 0, p is 1)
Now how about HODLers who keep all, or some, of their coins on custodial services? Well, any custodial service worth its salt would be doing at least 2-of-3, or probably something even bigger, like 11-of-15. So your custodial service, if it switched to using Taproot internally, could save a lot more (imagine an 11-of-15 getting reduced from 11 signatures to just 1!), which --- we can only hope! --- should translate to lower fees and better customer service from your custodial service!
So I think we can say, very accurately, that the Bitcoin principle --- that YOU are in control of your money --- can only be helped by Taproot (if you are doing multisignature), and, because P2PKH and P2WPKH remain validly-usable addresses in a Taproot future, will not be harmed by Taproot. Its benefit to this principle might be small (it mostly only benefits multisignature users) but since it has no drawbacks with this (i.e. singlesig users can continue to use P2WPKH and P2PKH still) this is still a nice, tidy win!
(even singlesig users get a minor benefit, in that multisig users will now reduce their blockchain space footprint, so that fees can be kept low for everybody; so for example even if you have your single set of private keys engraved on titanium plates sealed in an airtight box stored in a safe buried in a desert protected by angry nomads riding giant sandworms because you're the frickin' Kwisatz Haderach, you still gain some benefit from Taproot)
And here's the important part: if P2PKH/P2WPKH is working perfectly fine with you and you decide to never use Taproot yourself, Taproot will not affect you detrimentally. First do no harm!

Taproot and Your Contracts

No one is an island, no one lives alone. Give and you shall receive. You know: by trading with other people, you can gain expertise in some obscure little necessity of the world (and greatly increase your productivity in that little field), and then trade the products of your expertise for necessities other people have created, all of you thereby gaining gains from trade.
So, contracts, which are basically enforceable agreements that facilitate trading with people who you do not personally know and therefore might not trust.
Let's start with a simple example. You want to buy some gewgaws from somebody. But you don't know them personally. The seller wants the money, you want their gewgaws, but because of the lack of trust (you don't know them!! what if they're scammers??) neither of you can benefit from gains from trade.
However, suppose both of you know of some entity that both of you trust. That entity can act as a trusted escrow. The entity provides you security: this enables the trade, allowing both of you to get gains from trade.
In Bitcoin-land, this can be implemented as a 2-of-3 multisignature. The three signatories in the multisgnature would be you, the gewgaw seller, and the escrow. You put the payment for the gewgaws into this 2-of-3 multisignature address.
Now, suppose it turns out neither of you are scammers (whaaaat!). You receive the gewgaws just fine and you're willing to pay up for them. Then you and the gewgaw seller just sign a transaction --- you and the gewgaw seller are 2, sufficient to trigger the 2-of-3 --- that spends from the 2-of-3 address to a singlesig the gewgaw seller wants (or whatever address the gewgaw seller wants).
But suppose some problem arises. The seller gave you gawgews instead of gewgaws. Or you decided to keep the gewgaws but not sign the transaction to release the funds to the seller. In either case, the escrow is notified, and if it can sign with you to refund the funds back to you (if the seller was a scammer) or it can sign with the seller to forward the funds to the seller (if you were a scammer).
Taproot helps with this: like mentioned above, it allows multisignature setups to produce only one signature, reducing blockchain space usage, and thus making contracts --- which require multiple people, by definition, you don't make contracts with yourself --- is made cheaper (which we hope enables more of these setups to happen for more gains from trade for everyone, also, moon and lambos).
(technology-wise, it's easier to make an n-of-n than a k-of-n, making a k-of-n would require a complex setup involving a long ritual with many communication rounds between the n participants, but an n-of-n can be done trivially with some moon math. You can, however, make what is effectively a 2-of-3 by using a three-branch SCRIPT: either 2-of-2 of you and seller, OR 2-of-2 of you and escrow, OR 2-of-2 of escrow and seller. Fortunately, Taproot adds a facility to embed a SCRIPT inside a public key, so you can have a 2-of-2 Taprooted address (between you and seller) with a SCRIPT branch that can instead be spent with 2-of-2 (you + escrow) OR 2-of-2 (seller + escrow), which implements the three-branched SCRIPT above. If neither of you are scammers (hopefully the common case) then you both sign using your keys and never have to contact the escrow, since you are just using the escrow public key without coordinating with them (because n-of-n is trivial but k-of-n requires setup with communication rounds), so in the "best case" where both of you are honest traders, you also get a privacy boost, in that the escrow never learns you have been trading on gewgaws, I mean ewww, gawgews are much better than gewgaws and therefore I now judge you for being a gewgaw enthusiast, you filthy gewgawer).

Taproot and Your Contracts, Part 2: Cryptographic Boogaloo

Now suppose you want to buy some data instead of things. For example, maybe you have some closed-source software in trial mode installed, and want to pay the developer for the full version. You want to pay for an activation code.
This can be done, today, by using an HTLC. The developer tells you the hash of the activation code. You pay to an HTLC, paying out to the developer if it reveals the preimage (the activation code), or refunding the money back to you after a pre-agreed timeout. If the developer claims the funds, it has to reveal the preimage, which is the activation code, and you can now activate your software. If the developer does not claim the funds by the timeout, you get refunded.
And you can do that, with HTLCs, today.
Of course, HTLCs do have problems:
Fortunately, with Schnorr (which is enabled by Taproot), we can now use the Scriptless Script constuction by Andrew Poelstra. This Scriptless Script allows a new construction, the PTLC or Pointlocked Timelocked Contract. Instead of hashes and preimages, just replace "hash" with "point" and "preimage" with "scalar".
Or as you might know them: "point" is really "public key" and "scalar" is really a "private key". What a PTLC does is that, given a particular public key, the pointlocked branch can be spent only if the spender reveals the private key of the given private key to you.
Another nice thing with PTLCs is that they are deniable. What appears onchain is just a single 2-of-2 signature between you and the developemanufacturer. It's like a magic trick. This signature has no special watermarks, it's a perfectly normal signature (the pledge). However, from this signature, plus some datta given to you by the developemanufacturer (known as the adaptor signature) you can derive the private key of a particular public key you both agree on (the turn). Anyone scraping the blockchain will just see signatures that look just like every other signature, and as long as nobody manages to hack you and get a copy of the adaptor signature or the private key, they cannot get the private key behind the public key (point) that the pointlocked branch needs (the prestige).
(Just to be clear, the public key you are getting the private key from, is distinct from the public key that the developemanufacturer will use for its funds. The activation key is different from the developer's onchain Bitcoin key, and it is the activation key whose private key you will be learning, not the developer's/manufacturer's onchain Bitcoin key).
So:
Taproot lets PTLCs exist onchain because they enable Schnorr, which is a requirement of PTLCs / Scriptless Script.
(technology-wise, take note that Scriptless Script works only for the "pointlocked" branch of the contract; you need normal Script, or a pre-signed nLockTimed transaction, for the "timelocked" branch. Since Taproot can embed a script, you can have the Taproot pubkey be a 2-of-2 to implement the Scriptless Script "pointlocked" branch, then have a hidden script that lets you recover the funds with an OP_CHECKLOCKTIMEVERIFY after the timeout if the seller does not claim the funds.)

Quantum Quibbles!

Now if you were really paying attention, you might have noticed this parenthetical:
(technical details: a Taproot output is 1 version byte + 32 byte public key, while a P2WPKH (bech32 singlesig) output is 1 version byte + 20 byte public key hash...)
So wait, Taproot uses raw 32-byte public keys, and not public key hashes? Isn't that more quantum-vulnerable??
Well, in theory yes. In practice, they probably are not.
It's not that hashes can be broken by quantum computes --- they're still not. Instead, you have to look at how you spend from a P2WPKH/P2PKH pay-to-public-key-hash.
When you spend from a P2PKH / P2WPKH, you have to reveal the public key. Then Bitcoin hashes it and checks if this matches with the public-key-hash, and only then actually validates the signature for that public key.
So an unconfirmed transaction, floating in the mempools of nodes globally, will show, in plain sight for everyone to see, your public key.
(public keys should be public, that's why they're called public keys, LOL)
And if quantum computers are fast enough to be of concern, then they are probably fast enough that, in the several minutes to several hours from broadcast to confirmation, they have already cracked the public key that is openly broadcast with your transaction. The owner of the quantum computer can now replace your unconfirmed transaction with one that pays the funds to itself. Even if you did not opt-in RBF, miners are still incentivized to support RBF on RBF-disabled transactions.
So the extra hash is not as significant a protection against quantum computers as you might think. Instead, the extra hash-and-compare needed is just extra validation effort.
Further, if you have ever, in the past, spent from the address, then there exists already a transaction indelibly stored on the blockchain, openly displaying the public key from which quantum computers can derive the private key. So those are still vulnerable to quantum computers.
For the most part, the cryptographers behind Taproot (and Bitcoin Core) are of the opinion that quantum computers capable of cracking Bitcoin pubkeys are unlikely to appear within a decade or two.
So:
For now, the homomorphic and linear properties of elliptic curve cryptography provide a lot of benefits --- particularly the linearity property is what enables Scriptless Script and simple multisignature (i.e. multisignatures that are just 1 signature onchain). So it might be a good idea to take advantage of them now while we are still fairly safe against quantum computers. It seems likely that quantum-safe signature schemes are nonlinear (thus losing these advantages).

Summary

I Wanna Be The Taprooter!

So, do you want to help activate Taproot? Here's what you, mister sovereign Bitcoin HODLer, can do!

But I Hate Taproot!!

That's fine!

Discussions About Taproot Activation

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What is Masternode? Why Is XinFin Masternode a Good Alternative to Proof of Work

Taking into account current market conditions more and more crypto enthusiasts are gaining interest in being rewarded for holding tokens. Ain’s it’s beneficial than patiently waiting for the moon? Traditional Proof-of-Work (PoW) mining is not in the best shape. Therefore miners are not an exception as it’s getting harder to stay profitable. Plus, PoW mining isn’t friendly for mass adoption and requires huge network consumption. Another important fact is that you do not have to be a trading guru to start gaining additional income. These are just a few reasons why more buzz have been around the Proof-of-Stake (PoS) and Masternodes (MN). We have to admit that they are eye-catching nowadays, and considered as the future of cryptocurrency.
Now you might be asking yourself “What is the Masternode?” Let’s get down to business!
Well, in a nutshell, masternode is a server on a decentralized network. Some blockchain protocols provide for the creation of particular nodes that perform additional work on the verification of transactions and bring their owners regular profits. Such nodes are called masternodes. They regularly get rewards for completing such actions. Builds a curiosity? Move on!
Why Do You Need to Launch a XinFin Masternode Now, Until it’s Not Too Late? XinFin Masternode is a good option for passive income, and there are several reasons why it might be the right time to start running a XinFin masternode or a few at once.
First of all, XinFin masternodes are not so famous for now. However, this is likely to change soon. The same applies to rewards, which will decrease every year. Secondly, the XinFin XDC coin is cheaper, which means that the entry threshold at the moment is much lower than before. It won’t cost you a fortune. Finally, it’s better to hold and get rewards than merely hope for prices to go up.
Although according to the CoinGecko 2018 report the numbers of both masternodes and masternode coins increased significantly during the past year, there is still a substantial drop in overall value. The total market cap for masternodes coins dropped from over $12 billion in January 2018 to just over $500 million by 2018’s end — a double-digit drop quarter-on-quarter. Nevertheless, it’s just the beginning of the XinFin. Remember, the early bird gets the worm!
What is the Average XinFin Masternode ROI? Take in mind, that ROI is a relative term in the context of cryptocurrency space. We got used to the practice that ROI in crypto space is a bit another term, unlike the traditional markets where XinFin ROI measures per year around 10%+ as per the past few months’ data.
How to Setup Masternode: It’s very easy to setup XinFin Masternode compare to setting us crypto mining facility for Bitcoin and ethereum.
XinFin vs bitcoin mining: XinFin Masternode needs the lowest hardware configuration to run masternode while bitcoin needs the high configuration of hardware to run bitcoin mining and this also results in high depreciation every month with high risk. While XinFin Masternode runs with a tiny VPS hosting plan with the lowest cost of operation.
Before the launch of XinFin main-net i used to do bitcoin and ethereum mining And now shifted to XinFin network after the launch of main-net
Disclaimer: Digital asset investment, Mining comes with high risk. This article is not for the purpose of investment, tax or legal advice. The author is not responsible for any review of the assets. Please consult with your financial advisor before Crypto Investment or starting mining facilities
Useful link for XinFin Masternode Here is a link on How to setup masternode.
IndSoft System partnership with XinFin for hosting masternode: Click here to know more about partnership.
Guide to setup node with one click installer
For any instant support join XinFin Telegram Group.
submitted by dojogang to u/dojogang [link] [comments]

6 Most Weird Techniques Used For Bitcoin Mining So Far

6 Most Weird Techniques Used For Bitcoin Mining So Far

This news comes from https://www.livebitcoinnews.com
Bitcoin continues hitting the news for a variety of reasons. It is the most popular cryptocurrency and with increasing acceptance across industries, more people want to enjoy a piece of the pie.By the end of 2018, the global value of Bitcoin reached 66 billion U.S. dollars.
One of the greatest offshoots of Bitcoin’s growth is Bitcoin mining. It is essential for the survival of the cryptocurrency as it deals with creating new bitcoins. It is one of the most popular activities with techies seeking to cash in on the Bitcoin craze. The idea of mining cryptocurrency might sound farfetched, but the investments going into this activity are enormous.
Success as a Bitcoin Miner
The hardware and software required for Bitcoin mining are expensive and this has seen investors injecting millions of dollars into their projects. Miners require specialized computers and software to get the job done. There’s also the high cost of electricity and bandwidth which makes it difficult for everyone to join the fray.
How does Bitcoin mining work? If you want to succeed in Bitcoin mining, you need dedicated processing power, a lot of energy supply, cutting-edge ASIC mining hardware, and a lot of time. In a slow global economy, Bitcoin mining remains a viable income-generating activity. You enjoy insulation from inflation and you don’t have to worry about capital controls.
As the interest around Bitcoin continues, it is interesting to note some of the most brazen techniques Bitcoin miners have tried so far.
1.Using the Apollo Guidance Computer (AGC)
The creation of the Apollo Guidance Computer (AGC) was solely to guide U.S rockets to the moon. It was one of the earliest computers made and it was huge and slow. With computing power in high demand for Bitcoin mining, a restoration team consisting of Ken Shirriff, Carl Claunch, Marc Verdiell and Mike Stewart tried reviving the AGCA for this task. The AGC team was however disappointed by the results. At a hash rate of 10.3 seconds per Bitcoin hash, the team discovered it would take billions of years to mine a Bitcoin block.
2.Mobile Data Mining With Waste Gas
The idea is to install Bitcoin data-mining centers at oil rigs which has a need to vent gas. The data center developers argue that this would generate more revenue than selling fuel. It is also an easier way to reduce carbon print. The Ohmm® mining data center is an alluring proposition and one most miners would pick up.
3.Nuclear Reactors
A report on Forbes says Bitcoin miners harnessing power in a nuclear reactor compromised one of these sensitive installations in Ukraine. Nuclear reactors produce excess energy due to their sheer size. Using this exceeds energy on a profitable venture such as mining bitcoins is a great idea but only with a clear framework.
4.Mosque Data Mining
Bitcoin miners will go to any lengths to find the energy to power their supercomputers. A mosque is an unlikely palace for such an activity but due to a government subsidy of free electricity, Iranian Bitcoin miners now work from these holy places. A government crackdown has not managed to kill the practice.
5.Cryptojackers
While most online hackers want to steal your identity or harm you, crypto-jackers are a different breed. These are hackers interested in the computing power of your network. These computer geeks are so suave that some even hacked the Tesla company cloud and tapped computing power for Bitcoin mining.
6.Leveraging Bitcoin Mining Byproducts
Bitcoin mining systems generate a lot of heat and creative miners now use this to do other things. Some innovative miners heat their homes using this byproduct while others use the same for rum making among other tasks.
submitted by Moustache_Group to BitcoinMining [link] [comments]

Why I am supporting Bitcoin Cash

First, I want to say that I believe that Bitcoin (BTC) will moon and that lambo will rain, for several reasons that I won’t explain here and now. So please don't shit on me or down vote this post without explaining yourself properly. I'm saying this because the crypto community is full of young and emotional person insulting each other all the time without being able to explain their view clearly. I’m just sharing my story and my opinion, if I say something wrong, please let me know. No need to be emotional.
My story: I’m French (Forgive my English), a software engineer, working from home, previously in the banking industry, big noob in blockchain code related. I have been supporting bitcoin for a couple of times now, unfortunately I discovered it a bit late, promoting it to people around me as the peer to peer cash system and hoping that it will give us our financial freedom.
During this bear market and after losing a big part of my coins, I finally took the time to get a better understanding of each coin I’m holding and I quickly realised that Bitcoin Cash wasn’t a scam, that Bitcoin BTC is purely a speculative asset, the playground of professional traders, used to rekt noobs and that Lightning network will end as custodial wallets because no one will take the time/risk for opening/closing/securing a channel, especially poor people (few billions). There is no benefit for the average user in maintaining a LN node. I believe it will be more interesting to mine Bitcoin rather than maintaining a LN node.
So basically, I lost faith in the promise made by the Lightning Network which made me focusing on why Bitcoin Cash is the answer to a decentralized peer-to peer electronic cash system. I can confess that in the past I used to believe that second layer solution was the solution for everything, but I changed my mind.
To make it simple, BCH allows to make instant payment for very cheap whereas BTC can’t and won’t.

For each crypto project, I look at those different points:
1. Length of the chain
BTC and BCH are sharing the longest chain, it has been working well without any issues since now 10 years. No other project has such a good track record. This make me feel confident that the chance that this will continue to work as well for years or decades.

2. Community behind it
A good community for me is when you see technical people, risking their reputation/identity by posting videos, writing stuff and talking in public events about the project they support. Based on that, I believe the BCH community is the biggest of all. By technical people I mean someone talking using technical approach to back their opinion rather than beliefs based on emotions. Usually in the crypto space, those people are developers but it’s not always the case.
I made a small list of technical people supporting BCH:
-Peter R. Rizun: Chief Scientist, Bitcoin Unlimited.
-Vitalik Butterin (he often showed his support regarding BCH but didn’t produce any content)
-Jonald Fyookball: Electron Cash Developer
-Jonathan Toomim: Bitcoin cash developer who made interesting proof regarding scaling onchain)
-George Hotz: no need to present this awesome crazy dude!
-Amaury Séchet: Bitcoin Cash Developer and French! 😊
-Rick Falkvinge: Founder of the swedish pirate party, watch his youtube channel.
-Gabriel Cardona (Bitcoin cash developer)
-Justin Bons : Founder & CIO of Cyber Capital
-Dr. Mark B. Lundeberg: Developer researcher
And there is a lot more, but those people are people that I personally trust for their work they shared and that I like following.
Recently we had the Bitcoin cash city conference, another event full of people supporting BCH, that kind of thing doesn’t happen with other crypto. So many brilliant people supporting BCH, how could it be possible that all those guys are supporting a scam or a shitcoin. As well, there is often meetups and conferences all over the world.
The developer community is not centralized, there is multiple teams (BitcoinABC, Bitcoin Unlimited, BCHD, Bcash, Bitcoin Verde…) independent of each other arguing sometimes about technical and political stuff, this ensure that developments and important decisions are not centralized. I find this very healthy. If a fork occurs, it’s not a problem, it will simply double your coin and allows two different ways of thinking to grow and compete. This won’t happen in Bitcoin (BTC) anymore, the way of thinking is centralized for BTC, they all share the same view: the segwit workaround + small block + layer 2 = (moon + lambo) in 18 months.
Regarding CSW, I don’t believe in this guy for now but maybe I’m wrong, maybe this guy is wrongly understood but based on all the things I know about him, he seems too complicated to be someone honest. Honesty comes with simplicity.
Finally, regarding Roger Ver: He is hated a lot and I still don't understand why, I feel sorry for him, I really tried my best to hate him like the crowd, but I couldn’t find any reasons. Many people are saying that he is lying and scamming people but none of them are technically able to explain why. It's really a crazy story and I understand why some people call him "Bitcoin Jesus". I personally think he is doing a great job and I thank him.

3. The current and future adoption
BCH is used by reel people and reel shops (check the bitcoin cash map), there are transactions on the network to buy and sell real things that exist in the real world. Can you believe this? Maybe the only blockchain having that. Please let me know if you know another blockchain which is today serving the real world.
The Bitcoin cash wallet app is easy and exciting to use. Same for the app for merchant. This can be used by my old mum! The BCH roadmap shows that more features will be added to simplify and enhance the user experience. I can’t find other blockchain having that level of user friendliness.
Recently Roger Ver announced HTC mobile phone with a BCH wallet preinstalled. I read as well that Burger King is accepting BCH, but I haven’t verified if this was legit or not.

4. Existing features and roadmap
-Multiple wallets built on all platform.
-Bitcoin Cash point of sales: this app is the app that merchant should use to accept Bitcoin, as well very easy to use and takes 5min to install.
-Cash shuffle with Cash fusion allowing to transact anonymously, making BCH competing with privacy focused coins such like Zcash, Monero, Dash. I heard this function will be implemented as well on mobile devices.
-SLP token: The simplicity of creating a token and sending dividends make BCH a bit competing with all smart blockchain. Anyone can create a token, raise funds and send dividends easily and it works! Will Bitcoin Cash evolve to a smart economy?
-memo.cash: A social network stored on the blockchain, fixing the problem of censorship we have on reddit for example. I recently discovered it, it’s awesome to know that you can write whatever you want, and nobody will be able to delete it and this forever. It’s really an awesome experience. I invite you to test it. For example, yesterday I had fun creating, sending token and being tipped in BCH or in any token by random people, it really shows the potential of BCH. I think I made around 50 on chain transactions in less than one hour with less than 10 cents.
-Stable coins: We can build stable coin on BCH; this is something very important as well.
Regarding the roadmap: It’s well described on bitcoincash.org and looks promising, but no update since the last 5 months. Not sure if it’s normal.

5. Security
SHA256 based algorithm are I believe the most secure, I don’t think we need to add more regarding this. Maybe someone can help me to find some downside regarding security, often some people talk about the potential 51% attack that could occurs on BCH but I couldn’t manage to have my own opinion regarding this.
Regarding the double spending attack because of the zero confirmation, I have asked many people to explain to me how this could potentially be a problem for a real merchant. I think that small and insignificant amount doesn’t need instant confirmation but if you sell a lambo then of course you should wait for at least 5 confirmations.
To summarize I would even consider that zero conf is more advantageous than Lightning Network if you take everything into consideration. Worth case scenario if your restaurant is victim of a double spending attack a few times, you will just increase the confirmation level and prevent your customer from living your place. I think that it’s easier to print fake fiat money and try to pay with it rather than trying a double spending attack. But again, I might have misunderstood something or maybe there is more sophisticated exploits that I haven’t thought of.

6. Price
21 million coins, no inflation, the price currently around 300usd, a boiling community. The potential gains could be as good as BTC and even more. Maybe it’s the so waited coin that you will never convert back to that shit fiat. Certainly, one of the best coins to invest in now.

7. Electricity and efficiency
Since the cost of electricity is the same whatever the size of the block, it means that BCH is more environment friendly than BTC for the same amount of transaction or we can say that it’s "wasting" less energy. Maybe if LN works one day this will change.

My Conclusion:
Bitcoin is technically the worst coin; all others existing coins are better technically. But Bitcoin survives because of the network effect, illustrated by its biggest hash rate, making BTC the most secure blockchain. As well because of promises made by the Lightning Network. Bitcoin is the gold of crypto currencies. Bitcoin like Gold have both almost no utility. In a traditional market, gold drop when economy goes well and goes up when investors need to find a refuge. BTC is the drop zone for fresh meat.
Most of the BTC holders cannot think clearly regarding the BTC/BCH debate, they become completely irrational. This kind of behaviour leads to ruin, especially in trading/investment.With low fees, instant transaction, smart contracts, big community, user friendly apps, stable coin and a lot more to come, Bitcoin Cash has clearly a good future. I hope that someone will find my post useful. Cheers.
submitted by talu3000 to btc [link] [comments]

A 14-year-old's experience with Bitcoin

First-time poster here, don’t bully me, apologies for the potentially atrocious formatting :) TL;DR at the end
So in the wake of Bitcoin’s explosive rise in value and media attention, I’ve been encouraged by others to share my experience over the past few years as a miner. Here's my story (it's kinda long, you've been warned)

Humble Beginnings

It all started almost three years ago in the beginning of 2015 when Bitcoin flew under my radar. Looking into it, I admittedly wasn’t drawn in because of the decentralisation or the anonymous payments, I was hooked on the idea that anyone could get their hands on some just by running a program and leaving it to do its own thing. I know, how shallow of me. But the idea of making even a bit of money without ‘any work’ was convincing enough for 11-year-old me to do more digging into the matter.
To my disappointment, I soon found out that the era of mining Bitcoins with a PC’s CPU or GPU was long obsolete and instead it was all ASICs at that point.
So that summer, for my twelfth birthday, I got a little ASIC machine for €60, an Antminer U3. This little thing took up less space than a graphics card but could mine at 60 GH/s. Because, at the time, I didn’t have a controller device that could be kept up and running all day long so it could run the program that mined Bitcoin using the U3, I went ahead and got a Raspberry Pi. After setting up the Pi and installing all the necessary stuff (took an awfully long time), I connected it to AntPool and plugged the U3 in. Two days past and the mining pool sent the first Bitcoin I ever received to my wallet (I was using Blockchain.info). It was just 30 cents worth of BTC but I felt a bit of a rush because I was earning a bit of money through this completely new thing and the idea of that was thrilling.
Let’s back up for a second. I just used the term ‘earning’ as if I was profiting, and naive me 2 years ago was no different. In reality, I was at first oblivious to the fact that I was most likely LOSING money overall because of how much energy that little sucker was taking in. But, I was comforted thinking that using that machine was just a practical way of learning about this modern currency and that the loss of several cents’ worth of energy was acceptable in the name of education and learning.
Fast forward ten months to the wonderful summer of 2016. I had recently turned 13 and the Antminer U3 had been running on and off throughout. Various pauses and breaks in mining would be observed, as I had to manually get everything up and running after frequent breaks in the Internet connection. You’d expect my newly-turned-teenage brain to lose interest in Bitcoin as it does with many other gimmicks, but – even surprising myself – I miraculously didn’t. Good thing I maintained interest thinking about it now, not so good at the time for my parents. Why do I say this? I felt like it was time to get a little upgrade in my hardware.

Getting an upgrade

Days passed with me comparing every ASIC miner I could at that price point. It was then I set my eyes upon the Antminer S7 (same folks who did my U3, nice). I had put it up against a plethora of other miners and I figured the S7 was my best bet; the thing costs only about 10 times that of my U3 but could run at 4.73 TH/s, almost 80 times as powerful. The only problem being its power consumption was at 1300 watts, which would put a massive dent in the electricity bill and eliminate any profit I would make. Fortunately, I had a secret weapon up my sleeve – or rather my mum did. She had rented out an office outside our apartment where she would keep files and paperwork. The office’s electricity bill was a flat rate as far as I’m aware and it ended up being my saving grace because it virtually got rid of the “oh no I’m actually going to be losing money because of how much electricity I’m eating up” factor, making this whole hardware upgrade viable.
After convincing my parents, they finally agreed to shell out the requested amount, with the initial investment being paid back with time. I went to a local Bitcoin vendor and purchased 1 BTC for about $665 in cash (sigh yes, I know. $665 dollars). Shortly after, I used about 0.9 BTC to purchase the Antminer S7 and a 1600W power supply for a grand total of $600. The products would be made and shipped from China so I was definitely in for a wait.
A month passes and the package arrives at last. I connected all the wires from the power supply into the S7 and – with great anticipation – I plugged it into the wall to start its first ever run. And what do you know? An extremely loud and high-pitched whirring sound blasted out from the fans on both the power supply as well as the S7. After killing the thing, I questioned my choices. I couldn’t dare put that thing anywhere near my mum’s office in the event it drive everyone in the building absolutely nuts. I was at a loss. However, I soon recovered from my temporarily debilitated state and got working on a solution.
The first idea that came to my mind: change the fans. The stocks fans were by Evercool and spun at around 3000 RPM. The power supply used a small, robust fan that looked like a cube that must’ve spun at extremely high speeds judging by how high the sound it produced was. I got my parents to give me some more funding so I could acquire the replacement fans and I did. Bust. After installation and testing, none of the fans would work. I managed to configure the S7 to connect to my Antpool account and the machine would manage mining for several minutes running at peak performance but ultimately be automatically cut off because of how hot the machine was getting (I’m talking about 80 degrees Celsius kinda hot in that thing). The fans got refunded and I was back to the drawing board.
After combing through some forum posts and videos, I came across this video and a forum post in which people have their mining rigs placed inside a ventilated, muffled cabinet. Undertaking a project like this would be time-consuming and risky but I had no better ideas so I decided to go through with the idea anyway.
Firstly, I sought out a cabinet with suitable dimensions. I managed to get just what I needed at a second-hand IKEA shop. Great. Secondly, I went ahead and acquired some sound-absorbing acoustic foam from a local provider. Fantastic. Finally I had to get a ventilation system going within the cabinet, otherwise, all the hot air would roast the machine alive in there in a bloody mess. With the help of my dad, we found a pair cabinet fans on the Internet that were close to silent but could circulate the air well enough.
Eventually, all the materials came and, with the help of my parents, put everything together. The process took quite long time and we had a couple hiccups along the way, but we got it done and it came out pretty nice.
The moment of truth came and, to my relief, it ran so much quieter than without the cabinet. It was nowhere near silent but it reduced the noise a great deal. Soon after, I got the thing into the office and set everything up from there. Unfortunately, I was forced to underclock it because you could still hear the machine’s whining from outside the thin office door. Gunning the hashrate down about 25% to 3.7TH/s, I could lower the fan speed without risking the machine burning up. Sure, I wasn’t getting the full potential of the machine but I didn’t complain because electricity was not an issue there and it was still a whole lot better than my U3. With it up and running, I could leave it there, periodically checking to see if it was mining on Antpool.

The aftermath

In the months that followed, I was getting a solid $2.5 worth of BTC on daily basis. Half a year later, May of 2017, I had accumulated a satisfactory $600. I thought, “At this rate, I’d be able to pay my parents’ investment back in a few months” (the total investment came close to $900). Bitcoin had risen to over $1500 so I was already over the moon at that point because of how well everything was going. Little did I know…
I hit 0.5 BTC midway through September this year. The price of BTC had dropped after a sudden rise to $5000, but I couldn’t have asked for more. Although I possessed only half the amount of BTC I paid for the machine, its value was over twice that of the initial investment. I thought BTC would level off at around $4000 but nope.
In the month of October, the price skyrocketed. Since September, I had only mined 0.017 BTC but the value was already over $3000. It was just a matter of selling it, but I decided to hodl. Good thing I did.
As of November 5, I have approximately 0.52 BTC mined in total from my S7, valued at $4000. If I were to sell it right now, I’d have a profit of over $3100. And as for my miner, it’s churning out 0.0006 BTC daily, sounds like nothing but it’s still the equivalent of $5 today and I couldn’t be happier, at least with the miner and Bitcoin.
You remember that $665 for 1 BTC that I mentioned earlier? In hindsight, it would’ve been such a better idea to just keep that one Bitcoin and not do anything with it until today (in the interest of making much more money), as I’d theoretically have upwards of $7000. The idea of that still haunts me sometimes if I dwell on it too long but knowing that I’m in possession of an already hefty amount, the pain of it had numbed slightly. It’s not all doom and gloom for me from the exponential increase in Bitcoin’s value, however. Those first $0.3 payments from my humble little U3 all those years ago now are now the equivalent of over $6 today!
Bitcoin and everything it encompasses has been and still is a journey of discovery and an adventure. Looking back, starting with a modest €60 Antminer U3 to having a sum of Bitcoin equivalent to two extremely high-end gaming rigs (first thing I could think of as a comparison, sorry) has been something I can’t really describe. Through the course of the past few years, I’ve learned more about technology, I’ve unexpectedly gotten insight into economics and business and – of course – I’ve made a lot of money (if I decide to stop hodling that is).
Also, props to my parents for keeping an open mind throughout, I know some parents would be horrified at their kids being involved in something that has been used in some less-than-savoury ways and it's great knowing mine have been supportive all the way.
TL;DR got into Bitcoin mining 3 years ago at age 11 with an Antminer U3 that ran at 60 GH/s, got an Antminer S7 (4.73TH/s) and built a sound-muffling, ventilated cabinet for it. Am sat here today with $3000 profit if I decide to sell right now.
submitted by xx_riptide_xx to Bitcoin [link] [comments]

The 8 most informative comments about 21inc's bitcoin computer dev kit

"Anyone who thinks this is about making money by mining has very little insight into what Bitcoin actually offers the world. This is not about bringing the old economy (banks, businesses, governments) into the Bitcoin family. This is about building entirely new economies, ones that have never and could never have existed before. 21inc can see the vision and they just bootstrapped the IoT on the Bitcoin blockchain. Thank your lucky stars on your way to the moon." - PhiMinD
"I'm fairly sure this is NOT an end user device. This device appears to be solely for the purpose of prototyping integration with other devices, and allow people to work out the ends and outs of the process. My assumption is that in like 6 months to a year, a much more compact and integrated device will be released that would be far cheaper, and suitable for installation in actual consumer devices. This is for developers." - DakotaChiliBeans
"The more I think about it, the more incredible and groundbreaking this seems. When every piece of hardware and software has the ability to transfer money, our entire concept of how we do everything changes. We're only beginning to imagine the possibilities. Even the few simple ones I've been thinking of make my head spin. Bitcoin as a human currency is exciting. Creates a more open system, breaks monopoly, gives you the option of true, non-revocable ownership. All great stuff. But it's these revolutionary ideas that make me believe that Bitcoin, or a successor very much like it, will take over the world. As someone invested in bitcoin, I'd like to see it succeed and my investment pay off, but goddamn will this be an exciting ride regardless. At this point, I'm seriously thinking of buying and developing on it. The potential here is lightyears beyond what most people are thinking." - consideranon
"Seeing the 21 Bitcoin computer reminds me of the developer kits for oculus rift. It took a lot of time to perfect before going fully public. It was also tested with a pre-release through Samsung's VR headset. Other more resourceful people bought the cardboard much like the same people would buy the Raspberry Pi instead of this. Anyway, the 21 computer is very likely the first iteration of many." - Hiro_Y3
"I think it removes a step in the process. Instead of learning about wallets, private keys, maintaining a login and password, etc, the computer takes care of all of that without the user having to think about any of it. The mining function provides initial liquidity to get the ball rolling. This is the first step of payments being built into the IoT." -TDBit
"Most of everybody here is missing the point. This is a bitcoin computer. This is not made to simply mine to generate a profit but rather a miner is just an added part. The miner is used to continuously supply the Bitcoin computer with bitcoin. It uses the bitcoin to "write" to the blockchain. It's like a digital quill with an endless bitcoin inkwell." -Fuzzypickles69
"Ok, this takes a leap of faith, but what they're trying to do is build a full-stack device which can send/receive bitcoin and which also solves the "how do devices get bitcoin in the first place" problem. Imagine the whole thing being a lot smaller and cheaper, and embedded in lots of devices globally. Now you have a world in which millions of devices (machines) can send and receive tiny payments, and which natively have a currency unit to use for that purpose." - melbustus
"ServiceXYZ: Links your 21 box to your Twitter account, and any paywall website lets you read anything you want without popups, ads, or subscriptions. There, I just made up a business in 10 seconds, someone go make it :)" - evoorhees
These comments were pointed to by balaji himself, here.. https://www.reddit.com/Bitcoin/comments/3lv6zj/ama_request_ceo_of_21inc_balaji_srinivasan/cv9zq9q
submitted by phieziu to Bitcoin [link] [comments]

Predictions for 2020

Predictions: 2020
The USMC will adopt Lululemon PT uniforms.
The new trend in flash mob performances will be speed metal rock and mosh pits.
“Duck face” will be required on all passport photos.
Amtrak will open new lines and reinvent itself using popular themes. All northern lines will Polar Express trains. All southern routes will be Chattanooga Choo-Choo trains. All West Coast trains will be called Orient Express. And all other lines will be called Thomas the Tank Engine routes and will include animatronic faces on the fronts of all trains that can answer passenger questions. “This is the reality of operating in Fantasyland today,” will say the Director of the Amtrak Board.

UsToo, #ThemToo and #YouToo will be the new viral social media phenomena.

TRUMP will open on Broadway.
Taylor Swift will be named Democratic Party candidate for POTUS.
Armed teachers will proliferate in rural counties and school districts across the US. So will tactical shooting schools and courses, for teachers and students. Many school districts will open and manage their own shooting ranges. Shooting teams, rifle, pistol and shotgun, precision and tactical, will become the hot new sports in rural schools.
Personal bubbles will become hot new products and services. They will sell by the millions. These will be actual bubbles that people wear when they leave the sanctuary of their homes. They will come in various sizes, colors, and several ballistic and acoustic ratings. They will offer defense not only from bullets and knives, but also from antagonistic ideas, annoying co-workers, troubling truths and mean parents.
Fortnite will unveil a “permanent residence” option, including sustenance, hygiene and employment options, allowing for users to never have to leave the game.
Robots will replace nurses in nursing homes. A majority of residents will claim the robots are better than their “biofamilies.”
The American Baptist Association will re-issue warnings to all faithful to be careful during sex, lest dancing spontaneously happen.
LeBron James will hold a press conference and ask all NBA fans, “How the hell did I become the old man of basketball?” To which Michael Jordan will tweet, “Dude…”
Trump will announce that each US citizen will be issued a firearm of their choice, any make, caliber or model, but with the stipulation that participants must prove that they do not already own any firearms. “We’re not adding to anyone’s collection,” Trump will say at a White House press conference. “We just need more good guys and good gals out there with the tools to engage the bad guys.” “Oh, fuck me,” most law enforcement officers will say to each other.
Tactical body armor with roll over the fashion industry like a ceramic plate typhoon.
Pete Buttigieg and Tulsi Gabbard will be seen leaving a hotel room early one morning after a Democratic Party debate, leading to all sorts of media questions and speculations, and to calls by the Gay and Lesbian Legitimacy Board for investigations.
The American Psychiatric Association will announce that anxiety is actually a treatment for depression.
A report from the Coalition of Conservative Scientists will claim that all existing species of animals, and also some plants, engage in rape, and so did the dinosaurs, and thus it is part of the natural order. “So, get over it.”
Scientific American, Science News and National Geographic will all publish editorials, in response, claiming that the same can be said of homosexual behavior, documented in hundreds of other animals species, in nature. “So, you first.”
Greenland will become the new Florida.
Florida will become the new Atlantis.
Gondoleer will become a hot new job opportunity in Miami, New Orleans and New York.
The entire Sackler family will have their last name legally changed to Gonzalez.
India will announce a new campaign to reform Jammu and Kashmir into the “Indian Switzerland,” complete with quaint mountain villages, lots of ski resorts and hundreds of new mountain gondolas and aerial trams. Prime Minister Modi will announce contests to select a new cheese, new beer and Hindu mountain lederhausen to support the new Jammu and Kashmir brand.
The first SETI signal will be received from aliens claiming that they have Jeffrey Epstein and that they would like to return him. But, they still want to hang onto Elvis for a while longer, if that is OK.
Boeing’s stock will rebound and surge after they rebrand the 737 Max to the 737 Maxine.
Greta Thunberg will appear in the next X-Men movie as ClimaRage and will beat down Magneto with guilt and shame.
Joe Biden will be diagnosed with Alzheimer’s, but will not pull out of the race. “Does it even matter anymore?” he will say at the press conference announcing the diagnosis.
Hong Kong will go dark and become the worlds largest abandoned mall.
Disney will announce its purchase of the Notre Dame Cathedral. The entertainment behemoth will claim that only it has the resources to successfully complete the renovation of the fire-damaged landmark, and the culture to maintain French history and tradition. Tours of the site will begin soon after and will be led by Snow White and Mickey Mouse.
Disney will also announce that it has purchased Stonehenge, the Pyramids, Machu Picchu and the Great Wall of China, and that all these new properties will be anchors for new entertainment megahubs. Disney spokespeople will claim that only Disney has the resources to maintain these historical and cultural marvels, and at the same time better leverage their tourism revenue potentials. And they also have animated feature length movies for each site, coincidentally.
A Religious Liberty bill will be signed into law reassigning all non-Christians to their new Christian denominations. Buddhists will become Baptists. Muslims will become Methodists. The Hindus will become Congregationalists. Mormons will become Presbyterians. “What about us?” the Unitarians will ask in a barely heard voice, to which the official response will be, “Go talk to the Catholics. Maybe they want you.”
Pay day loans, reverse mortgages and high frequency trading will be recognized by the SEC, FTC and Justice Department as key corruptions and cancers to capitalism. Nonetheless, they will spread and proliferate like weeds. New types and styles of snake oils and shell games will join them in the disfigurement of capitalism.
A growing number and majority of stores, restaurants and businesses in general will no longer accept cash, preferring credit cards and digital currency. Most panhandlers, prostitutes and drug dealers will also stop accepting cash and will instead require PayPal, Venmo or Bitcoin.
Surveillance will become ubiquitous as all devices in our lives - phones, doorbells, coffeemakers, tablets, speakers, watches, TVs, thermostats, crockpots, electrical plugs, litter boxes, remote controls, dog collars, security systems, vibrators, cars, weapons, (the list is growing) etc. - will harvest data about our lives and behaviors and feed that data to “data brokers” who analyze and sell that to other corporations. In response to this growing threat, personal data security companies will emerge that will require customers to register their personal data with them and will promise to protect that data. People will fall for this.
Online social influencer and personal data broker will become top paying jobs.
The first inter-species hybrid human will come to light in a gene-splicing lab somewhere in China. It will be either a pigboy or a monkeygirl. Scientific and medical authorities around the world will express their outrage. Meanwhile, millions will clamor to place orders for puppyboys and kittygirls.
The U.S. Department of Defense will officially begin planning strategies to weaponize the Internet. PornhubDoD.mil will be announced as the “nuclear option.”
The Republican and Democratic parties will assume new nicknames, the Hatfields and McCoys. “Oh, puh-lease,” will say 89-year-old Dolly Hatfield, granddaughter of “Devil” Anse Hatfield, of Possum Holler, Kentucky, to reporters from her nursing home, “we was never as bad as all them DC politicians. They’re downright crazy. We was just a mite pissed off.”
Dating apps will go the way of porn magazines as mating algorithms begin populating our phones and browsers with photos of candidates in our lane, based on various demographic variables. Amazon and Google will provide online weddings, will even provide avatars to act as bridesmaid and best-man.
Digisex will trend as the new safe alternative to physical sex.
The $15.5 trillion US corporate debt bubble, 74% of US GDP, will burst, throwing the US into economic chaos. Celebrations, by those who have dreamed of the event, will be short-lived when it is realized that no one’s phones work.
Nancy Pelosi and Bill Maher will be the first residents to check in at a luxurious new reeducation camp outside of Fairbanks. The string of new American Gulags with be a booming new industry and will provide many jobs for patriotic Alaskans.
Many US churches will begin installing security checkpoints, gun emplacements and sniper overwatch.
Many schools will implement TCPs, Traffic Control Points, manned by armed security personnel, except at rural schools, where TCPs will be manned by armed teachers and parents, and in some districts, students.
The PSC, Private Security Corporation, industry will surge and boom like a high school band at halftime at a Friday night football game.
High school bands will begin wearing tactical body armor at Friday night halftimes.
Hillary Clinton will finally reveal the location of Jimmy Hoffa’s body. “I told her not to do it!” Bill will say at her trial.
Trump will get reelected and will immediately sign an executive order establishing The Department of Truth, whose mandate will be to officially and legally determine which facts are truths and which are lies. Using the term “alternative facts” will become illegal.
The Democratic Party candidates for president will switch from debates to playing concerts as a band, during which each gets a solo spotlight, during which they have 5 minutes to play their instrument and riff on politics. Squabbles over who plays lead guitar and the drums will follow the band throughout their tour. Buttigieg will never stop complaining about having to play the flute.
A startup company will release a new product called the Emonilometer, which will measure a person’s emotional and spiritual depth and flow. Various plans ands price points will be available. Sales will soar as customers catch on that the more you pay the deeper your flow. (Note: A “nilometer” is used to measure river depth and flow, was first used by the ancient Egyptians.)
Multiple sources within the White House will claim that Trump’s favorite new phrase is “It’s good to be the king.” Sources close to Mel Brooks will claim that his favorite new phrase is, “Oy vey.”
A new extinct human species will be discovered. Homo idioticus will answer a lot of burning questions regarding the human tree of evolution, and the current state of humanity.
The collapse of the dairy industry, due to unmanageable costs and ratios, will lead scientists and farmer to look for other sources of milk, beyond almond and oat. New options will include shark milk, beetle milk, flamingo milk and even spider milk, for which demand will quickly out-strip supplies, due to consumers hoping for spider super powers.
A joint Chinese-Israeli-SpaceX project will start building a lunar station on the moon. The station will be focused on research and mining, but also will offer “Do It On the Moon” romantic get-away packages for couples.
The Labor Secretary will quip during a press conference that “retirement is for pussies.”
US Space Command will begin selecting and training its first class of Space Rangers.
LSD and psilocybin will be the new cure-all super-drugs, for everything from depression, addiction and dementia. Doctors and pharmacists will take to referring to these as Timothy Leary treatments. Members of the Leary family will demand a cut of the action.
Coach Orgeron and LSU will replace Saban and Alabama as the defining college football program, and will set new standards in 2020 when LSU becomes the first to sign a QB right out of middle school. Other schools will soon follow.
Elizabeth Warren and Bernie Sanders will make a soft porn short film together in an attempt to connect with American voters.
Copyright Jeff Forker 2020
submitted by jaforker to satire [link] [comments]

The ultimate guide to passive crypto earnings!

I've spent the last couple months figuring out a good strategy to generate some passive cryptocurrency without investing money before a big bull-run starts. As Bitcoin is still fairly low, but cryptos have been risen again in the last weeks, it's best to get in now. I don't have very much time, so I examinated the best-working websites with the littlest time investment and the highest result possible.

Disclaimer: This will be a long post and I'll tell you all the sites I use and how my strategy works. Use it as an inspiration and develop your own working strategy. Skip stuff that doesn't seem to be worth your time or websites you don't like. If you don't like to use a referral-link, just remove the last part of the link. Most websites will give you a bonus when signing up with a ref-link, though and I would appreciate it for the effort I put in this guide.

I assume you have some basic knowledge on cryptocurrencies, a wallet and accounts on Faucethub and Coinpot.

So, let's get started.

Step 1: Claim once a day from stacking up faucets

If you're familiar with faucets, you probably know the moon-faucets that pay directly to Coinpot. They keep stacking up until your next claim, so they are the best and highest-paying faucets if you want to keep your time claiming as little as possible. I suggest you use them at least once a day to accumulate the daily bonus that will really change your game. I do a quick claiming round once in the morning and once in the evening. If you have more time, they are also really worth being claimed more often. For the sake of completion I will include them here:

Moonbitcoin for Bitcoin
Moonlitecoin for Litecoin
Moonbitcoincash for Bitcoin Cash
Moondash for Dash
Moondogecoin for Dogecoin
Bitfun stacking up Bitcoin-faucet that pays instantly to Coinpot

Two new exact clones of the Moonfaucets that pay instantly to Faucethub with no minimum. They also have daily bonus:

Getcoin Bitcoin for Bitcoin
Getcoin Litecoin for Litecoin

And the last stacking up faucet for BTC: Yannik.biz

So yeah, try to claim them at least once a day to maintain your daily bonus. The bonus can really be a game changer on these ones. Claiming them all will take no more than 5-10 minutes every day.

Step 2: Receive daily interest on your faucet claims!

Send your Bitcoin to Freebitcoin and receive daily interest on your balance once you have more than 30000 Satoshis (shouldn't take too long if you put in some effort in the beginning). You can also use the website as a faucet once a hour. It is actually paying well. If you use my link to sign up a new account you will receive life-long +12,5% on your daily interest and +25% on all your claims. If you already have an account, just create a new one with this link and delete your old one as this ref-back-bonus will give you a decent boost on your earnings. Freebitcoin is one of the oldest and most trusted website in the crypto scene!

Step 3: Claim even more cryptos once you have some spare time

Highest-paying sites I found where you can claim every hour along with Freebitcoin are these:

Cointiply: very high paying and they also give you daily interest, but are tied to USD-rates, so you're better off withdrawing your satoshis to Freebitcoin once you reached minimum withdrawal as you would lose satoshis if BTC price continues to rise.

Freedogecoin: Same as Freebitcoin, but with less functions.

Bitsfree: New website with cool design where you can claim once a hour and withdraw to Faucethub at a fairly low amount. Pays pretty well.

Claimbits: Same script as Bitsfree, but pays a bit less and you have to solve three shortlinks once in a while to be able to claim. It's still worth participating in.

Remember: On every claim on these websites you have the chance to win a big amount of cash. So try to use them as often as possible. Unlike the stacking up faucets, with the exception of Cointiply, they don't have a daily bonus, so it's no problem if you ignore them for a while.

Bonusbitcoin: Claim a good amount of satoshis every 15 minutes. Instant payments to Coinpot again.

Click high-paying ads on AdBtc and Dogeads. Another good website for high-paying BTC-ads is Bits-Pays.

Use websites where you can do surveys and all kinds of stuff to earn money that also pay in cryptocurrency. The best website I found that is similar to Swagbucks and has the option to pay cryptos is probably Grindabuck.

Claim your daily bonus at Firefaucet, collect some Autoclaims during the week and run it during the happy hours on the weekend to get most of it. Instant payments to Faucethub.

Step 4: Use semi-passive methods with crypto farming games

There are some crypto games out there that have the ability to build you a decent chunk of passive income after a while. The sites require small tasks you do to earn crypto or credits which you can re-invest in stuff that will generate passive income for you. It takes some effort upfront, but once set up they will passively pay you with no additional effort.Here are my favorites:

Satoshi-Labs: Claim from a faucet every 5 minutes, do surveys and shortlinks and re-invest your earnings in buildings that will generate satoshis for you every hour.

Cryptomininggame: Play a simulated mining game and do missions to level up. As you level up, your earnings increase. This site has a high stacking up daily bonus and can be very profitable once you get to a high level.

Bits-Pays: Has several options to earn passive income. You can play their mining game or buy company shares that will give you dividends. It has a lot of attractive offers for advertisers and very high paying ads and daily bonus, too!

Bitcoinfun: This is a new website that works the exact same as satoshilabs. Once you're into satoshilabs you will also get Bitcoinfun. I see a lot of potential for this website.

Step 5: Fully passive methods

So yeah, let's come to the best part. There are options that require no effort at all! Let's go.

I've already written about sending my satoshis to Freebitcoin for daily interest, but what you can also do is sending some cryptos to Eobot. They are probably the only legit Cloudmining platform out there that has been paying since 2013. You can also claim some GHS there every 24 hours if you set Mining to GHS 5.0. first, which is cool. I like to send some of my altcoins like Doge and Bitcoin Cash to them and convert them in GHS to earn passive Satoshis.

You have probably heart it a thousand times on this sub, but you can also earn Bitcoin by using the two legit autosurfers that pay in Bitcoin by now. This is a fully passive method, just run them whenever you're online.

Getcashfree and Fastcashmining.
Another fully passive website planning to add crypto-payments soon is Radioearn.

Use browser extensions that will automatically generate money for you just for using them:

Presearch: This is probably the best search engine I've ever seen. After installing it will be opened every time you open a new tab. You can customize it, so you can choose from searching via Google, Amazon, Reddit, Wikipedia and much more without accessing the websites first. This is very comfortably and the best part about it: You earn Pre-Tokens for every search, which you can later exchange for BTC.

Surfe.be: A browser extension that shows you some Banners while surfing the web and pays you some money for it. You can disable it at any time and it isn't over-present at all when surfing (I barely notice the banners).

Claim every 24 hours from Mellowads and use it to advertise your ref-links. You can also promote your ref-links on AdBTC, Bits-Pays and DogeAds. Having referrals is another good way to generate some passive income.

Sign up for Mannabase. This is a cool project that aims to create some sort of crypto Universal Basic Income for everyone. After signing up you will need to verify your identity and once they accept you, you'll receive free Manna every week. You can then exchange Manna for BTC or USD. As they have a lot of pending approvals, expect it to take 1-2 months before they accept you.

Conclusion

So yeah, that's basically my main sources and my strategy and I treat it as some sort of site-business. If I am lazy, I spend no more than 10-15 minutes a day to claim the stacking up faucets and daily bonuses on websites and receive my daily interest, payments from Eobot, crypto games and browser extensions anyway. It's really cool to watch your balances, bonus and interest grow over time and who knows? 1$ in Crypto could be 30$ of Crypto in the future. Use this guide as an inspiration to develop your own strategy of acquiring as many Cryptos for free as you can. For me these websites work the best. And I tested a lot of websites.

Additional tips: Use different passwords on the websites and write them all down. It can be a hassle memorizing several passwords. Also create a separate e-mail-address for all the crypto websites. To make it easier handling all the websites, group them in a document e.q. all 1 hour faucets, all stacking up faucets and add links, so you can quickly access them when you want to use this particular group of websites. Be patient at first, your earnings will increase over time.

Feel free to ask me anything, have fun and happy claiming! :)
submitted by kryptanthrax to beermoneyglobal [link] [comments]

A Beginners Guide to Bitcoin, Blockchain & Cryptocurrency

As cryptocurrency, and blockchain technology become more abundant throughout our society, it’s important to understand the inner workings of this technology, especially if you plan to use cryptocurrency as an investment vehicle. If you’re new to the crypto-sphere, learning about Bitcoin makes it much easier to understand other cryptocurrencies as many other altcoins' technologies are borrowed directly from Bitcoin.
Bitcoin is one of those things that you look into only to discover you have more questions than answers, and right as you’re starting to wrap your head around the technology; you discover the fact that Bitcoin has six other variants (forks), the amount of politics at hand, or that there are over a thousand different cryptocurrencies just as complex if not even more complex than Bitcoin.
We are currently in the infancy of blockchain technology and the effects of this technology will be as profound as the internet. This isn’t something that’s just going to fade away into history as you may have been led to believe. I believe this is something that will become an integral part of our society, eventually embedded within our technology. If you’re a crypto-newbie, be glad that you're relatively early to the industry. I hope this post will put you on the fast-track to understanding Bitcoin, blockchain, and how a large percentage of cryptocurrencies work.

Community Terminology

Altcoin: Short for alternative coin. There are over 1,000 different cryptocurrencies. You’re probably most familiar with Bitcoin. Anything that isn’t Bitcoin is generally referred to as an altcoin.
HODL: Misspelling of hold. Dank meme accidentally started by this dude. Hodlers are much more interested in long term gains rather than playing the risky game of trying to time the market.
TO THE MOON: When a cryptocurrency’s price rapidly increases. A major price spike of over 1,000% can look like it’s blasting off to the moon. Just be sure you’re wearing your seatbelt when it comes crashing down.
FUD: Fear. Uncertainty. Doubt.
FOMO: Fear of missing out.
Bull Run: Financial term used to describe a rising market.
Bear Run: Financial term used to describe a falling market.

What Is Bitcoin?

Bitcoin (BTC) is a decentralized digital currency that uses cryptography to secure and ensure validity of transactions within the network. Hence the term crypto-currency. Decentralization is a key aspect of Bitcoin. There is no CEO of Bitcoin or central authoritative government in control of the currency. The currency is ran and operated by the people, for the people. One of the main development teams behind Bitcoin is blockstream.
Bitcoin is a product of blockchain technology. Blockchain is what allows for the security and decentralization of Bitcoin. To understand Bitcoin and other cryptocurrencies, you must understand to some degree, blockchain. This can get extremely technical the further down the rabbit hole you go, and because this is technically a beginners guide, I’m going to try and simplify to the best of my ability and provide resources for further technical reading.

A Brief History

Bitcoin was created by Satoshi Nakamoto. The identity of Nakamoto is unknown. The idea of Bitcoin was first introduced in 2008 when Nakamoto released the Bitcoin white paper - Bitcoin: A Peer-to-Peer Electronic Cash System. Later, in January 2009, Nakamoto announced the Bitcoin software and the Bitcoin network officially began.
I should also mention that the smallest unit of a Bitcoin is called a Satoshi. 1 BTC = 100,000,000 Satoshis. When purchasing Bitcoin, you don’t actually need to purchase an entire coin. Bitcoin is divisible, so you can purchase any amount greater than 1 Satoshi (0.00000001 BTC).

What Is Blockchain?

Blockchain is a distributed ledger, a distributed collection of accounts. What is being accounted for depends on the use-case of the blockchain itself. In the case of Bitcoin, what is being accounted for is financial transactions.
The first block in a blockchain is referred to as the genesis block. A block is an aggregate of data. Blocks are also discovered through a process known as mining (more on this later). Each block is cryptographically signed by the previous block in the chain and visualizing this would look something akin to a chain of blocks, hence the term, blockchain.
For more information regarding blockchain I’ve provided more resouces below:

What is Bitcoin Mining

Bitcoin mining is one solution to the double spend problem. Bitcoin mining is how transactions are placed into blocks and added onto the blockchain. This is done to ensure proof of work, where computational power is staked in order to solve what is essentially a puzzle. If you solve the puzzle correctly, you are rewarded Bitcoin in the form of transaction fees, and the predetermined block reward. The Bitcoin given during a block reward is also the only way new Bitcoin can be introduced into the economy. With a halving event occurring roughly every 4 years, it is estimated that the last Bitcoin block will be mined in the year 2,140. (See What is Block Reward below for more info).
Mining is one of those aspects of Bitcoin that can get extremely technical and more complicated the further down the rabbit hole you go. An entire website could be created (and many have) dedicated solely to information regarding Bitcoin mining. The small paragraph above is meant to briefly expose you to the function of mining and the role it plays within the ecosystem. It doesn’t even scratch the surface regarding the topic.

How do you Purchase Bitcoin?

The most popular way to purchase Bitcoin through is through an online exchange where you trade fiat (your national currency) for Bitcoin.
Popular exchanges include:
  • Coinbase
  • Kraken
  • Cex
  • Gemini
There’s tons of different exchanges. Just make sure you find one that supports your national currency.

Volatility

Bitcoin and cryptocurrencies are EXTREMELY volatile. Swings of 30% or more within a few days is not unheard of. Understand that there is always inherent risks with any investment. Cryptocurrencies especially. Only invest what you’re willing to lose.

Transaction & Network Fees

Transacting on the Bitcoin network is not free. Every purchase or transfer of Bitcoin will cost X amount of BTC depending on how congested the network is. These fees are given to miners as apart of the block reward.
Late 2017 when Bitcoin got up to $20,000USD, the average network fee was ~$50. Currently, at the time of writing this, the average network fee is $1.46. This data is available in real-time on BitInfoCharts.

Security

In this new era of money, there is no central bank or government you can go to in need of assistance. This means the responsibility of your money falls 100% into your hands. That being said, the security regarding your cryptocurrency should be impeccable. The anonymity provided by cryptocurrencies alone makes you a valuable target to hackers and scammers. Below I’ve detailed out best practices regarding securing your cryptocurrency.

Two-Factor Authentication (2FA)

Two-factor authentication is a second way of authenticating your identity upon signing in to an account. Most cryptocurrency related software/websites will offer or require some form of 2FA. Upon creation of any crypto-related account find the Security section and enable 2FA.

SMS Authentication

The most basic form of 2FA which you are probably most familiar with. This form of authentication sends a text message to your smartphone with a special code that will allow access to your account upon entry. Note that this is not the safest form of 2FA as you may still be vulnerable to what is known as a SIM swap attack. SIM swapping is a social engineering method in which an attacker will call up your phone carrier, impersonating you, in attempt to re-activate your SIM card on his/her device. Once the attacker has access to your SIM card he/she now has access to your text messages which can then be used to access your online accounts. You can prevent this by using an authenticator such as Google Authenticator.

Authenticator

The use of an authenticator is the safest form of 2FA. An authenticator is installed on a seperate device and enabling it requires you input an ever changing six digit code in order to access your account. I recommend using Google Authenticator.
If a website has the option to enable an authenticator, it will give you a QR code and secret key. Use Google Authenticator to scan the QR code. The secret key consists of a random string of numbers and letters. Write this down on a seperate sheet of paper and do not store it on a digital device.
Once Google Authenticator has been enabled, every time you sign into your account, you will have to input a six-digit code that looks similar to this. If you happen to lose or damage the device you have Google Authenticator installed on, you will be locked out of your account UNLESS you have access to the secret key (which you should have written down).

Hardware Wallets

A wallet is what you store Bitcoin and cryptocurrency on. I’ll provide resources on the different type of wallets later but I want to emphasize the use of a hardware wallet (aka cold storage).
Hardware wallets are the safest way of storing cryptocurrency because it allows for your crypto to be kept offline in a physical device. After purchasing crypto via an exchange, I recommend transferring it to cold storage. The most popular hardware wallets include the Ledger Nano S, and Trezor.
Hardware wallets come with a special key so that if it gets lost or damaged, you can recover your crypto. I recommend keeping your recovery key as well as any other sensitive information in a safety deposit box.
I know this all may seem a bit manic, but it is important you take the necessary security precautions in order to ensure the safety & longevity of your cryptocurrency.

Technical Aspects of Bitcoin

TL;DR
  • Address: What you send Bitcoin to.
  • Wallet: Where you store your Bitcoin
  • Max Supply: 21 million
  • Block Time: ~10 minutes
  • Block Size: 1-2 MB
  • Block Reward: BTC reward received from mining.

What is a Bitcoin Address?

A Bitcoin address is what you send Bitcoin to. If you want to receive Bitcoin you’d give someone your Bitcoin address. Think of a Bitcoin address as an email address for money.

What is a Bitcoin Wallet?

As the title implies, a Bitcoin wallet is anything that can store Bitcoin. There are many different types of wallets including paper wallets, software wallets and hardware wallets. It is generally advised NOT to keep cryptocurrency on an exchange, as exchanges are prone to hacks (see Mt. Gox hack).
My preferred method of storing cryptocurrency is using a hardware wallet such as the Ledger Nano S or Trezor. These allow you to keep your crypto offline in physical form and as a result, much more safe from hacks. Paper wallets also allow for this but have less functionality in my opinion.
After I make crypto purchases, I transfer it to my Ledger Nano S and keep that in a safe at home. Hardware wallets also come with a special key so that if it gets lost or damaged, you can recover your crypto. I recommend keeping your recovery key in a safety deposit box.

What is Bitcoins Max Supply?

The max supply of Bitcoin is 21 million. The only way new Bitcoins can be introduced into the economy are through block rewards which are given after successfully mining a block (more on this later).

What is Bitcoins Block Time?

The average time in which blocks are created is called block time. For Bitcoin, the block time is ~10 minutes, meaning, 10 minutes is the minimum amount of time it will take for a Bitcoin transaction to be processed. Note that transactions on the Bitcoin network can take much longer depending on how congested the network is. Having to wait a few hours or even a few days in some instances for a transaction to clear is not unheard of.
Other cryptocurrencies will have different block times. For example, Ethereum has a block time of ~15 seconds.
For more information on how block time works, Prabath Siriwardena has a good block post on this subject which can be found here.

What is Bitcoins Block Size?

There is a limit to how large blocks can be. In the early days of Bitcoin, the block size was 36MB, but in 2010 this was reduced to 1 MB in order to prevent distributed denial of service attacks (DDoS), spam, and other malicious use on the blockchain. Nowadays, blocks are routinely in excess of 1MB, with the largest to date being somewhere around 2.1 MB.
There is much debate amongst the community on whether or not to increase Bitcoin’s block size limit to account for ever-increasing network demand. A larger block size would allow for more transactions to be processed. The con argument to this is that decentralization would be at risk as mining would become more centralized. As a result of this debate, on August 1, 2017, Bitcoin underwent a hard-fork and Bitcoin Cash was created which has a block size limit of 8 MB. Note that these are two completely different blockchains and sending Bitcoin to a Bitcoin Cash wallet (or vice versa) will result in a failed transaction.
Update: As of May 15th, 2018 Bitcoin Cash underwent another hard fork and the block size has increased to 32 MB.
On the topic of Bitcoin vs Bitcoin Cash and which cryptocurrency is better, I’ll let you do your own research and make that decision for yourself. It is good to know that this is a debated topic within the community and example of the politics that manifest within the space. Now if you see community members arguing about this topic, you’ll at least have a bit of background to the issue.

What is Block Reward?

Block reward is the BTC you receive after discovering a block. Blocks are discovered through a process called mining. The only way new BTC can be added to the economy is through block rewards and the block reward is halved every 210,000 blocks (approximately every 4 years). Halving events are done to limit the supply of Bitcoin. At the inception of Bitcoin, the block reward was 50BTC. At the time of writing this, the block reward is 12.5BTC. Halving events will continue to occur until the amount of new Bitcoin introduced into the economy becomes less than 1 Satoshi. This is expected to happen around the year 2,140. All 21 million Bitcoins will have been mined. Once all Bitcoins have been mined, the block reward will only consist of transaction fees.

Technical Aspects Continued

Understanding Nodes

Straight from the Bitcoin.it wiki
Any computer that connects to the Bitcoin network is called a node. Nodes that fully verify all of the rules of Bitcoin are called full nodes.
In other words, full nodes are what verify the Bitcoin blockchain and they play a crucial role in maintaining the decentralized network. Full nodes store the entirety of the blockchain and validate transactions. Anyone can participate in the Bitcoin network and run a full node. Bitcoin.org has information on how to set up a full node. Running a full node also gives you wallet capabilities and the ability to query the blockchain.
For more information on Bitcoin nodes, see Andreas Antonopoulos’s Q&A on the role of nodes.

What is a Fork?

A fork is a divergence in a blockchain. Since Bitcoin is a peer-to-peer network, there’s an overall set of rules (protocol) in which participants within the network must abide by. These rules are put in place to form network consensus. Forks occur when implementations must be made to the blockchain or if there is disagreement amongst the network on how consensus should be achieved.

Soft Fork vs Hard Fork

The difference between soft and hard forks lies in compatibility. Soft forks are backwards compatible, hard forks are not. Think of soft forks as software upgrades to the blockchain, whereas hard forks are a software upgrade that warrant a completely new blockchain.
During a soft fork, miners and nodes upgrade their software to support new consensus rules. Nodes that do not upgrade will still accept the new blockchain.
Examples of Bitcoin soft forks include:
A hard fork can be thought of as the creation of a new blockchain that X percentage of the community decides to migrate too. During a hard fork, miners and nodes upgrade their software to support new consensus rules, Nodes that do not upgrade are invalid and cannot accept the new blockchain.
Examples of Bitcoin hard forks include:
  • Bitcoin Cash
  • Bitcoin Gold
Note that these are completely different blockchains and independent from the Bitcoin blockchain. If you try to send Bitcoin to one of these blockchains, the transaction will fail.

A Case For Bitcoin in a World of Centralization

Our current financial system is centralized, which means the ledger(s) that operate within this centralized system are subjugated to control, manipulation, fraud, and many other negative aspects that come with this system. There are also pros that come with a centralized system, such as the ability to swiftly make decisions. However, at some point, the cons outweigh the pros, and change is needed. What makes Bitcoin so special as opposed to our current financial system is that Bitcoin allows for the decentralized transfer of money. Not one person owns the Bitcoin network, everybody does. Not one person controls Bitcoin, everybody does. A decentralized system in theory removes much of the baggage that comes with a centralized system. Not to say the Bitcoin network doesn’t have its problems (wink wink it does), and there’s much debate amongst the community as to how to go about solving these issues. But even tiny steps are significant steps in the world of blockchain, and I believe Bitcoin will ultimately help to democratize our financial system, whether or not you believe it is here to stay for good.

Final Conclusions

Well that was a lot of words… Anyways I hope this guide was beneficial, especially to you crypto newbies out there. You may have come into this realm not expecting there to be an abundance of information to learn about. I know I didn’t. Bitcoin is only the tip of the iceberg, but now that you have a fundamental understanding of Bitcoin, learning about other cryptocurrencies such as Litecoin, and Ethereum will come more naturally.
Feel free to ask questions below! I’m sure either the community or myself would be happy to answer your questions.
Thanks for reading!

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Thinking in Systems: A Cryptocurrency Primer

I recently wrote a text post Success to the Successful (or: why the moon is not far enough). In that post I explained Success to the Successful, an example of what is know as a system archetype, a recurring pattern that systems often take on.
I first came across the idea of system archetypes in the book Thinking in Systems: A Primer by Donella Meadows. I would like to use one chapter of this book to analyse cryptocurrencies, as it provides a convenient basis for comparison. I will focus on Dash and Bitcoin because I think this is the illuminating pair to compare, but I will mention others as they become relevant.
Donella Meadows describes a system as a set of things—people, cells, molecules, or whatever—interconnected in such a way that they produce their own behavior over time (p2), and as an interconnected set of elements that is coherently organized in a way that achieves something (p11).
Chapter 6 of this book is titled Leverage Points—Places to Intervene in a System. I will work through them in turn, briefly explain each, and use them to analyse cryptocurrencies. With any luck, this will also show ways to synthesise a cryptocurrency, ie consciously choose properties that meet intended goals. The leverage points are presented in reverse order, that is to say, point 12 is the weakest intervention point, and point 1 is the strongest.
12. Numbers—Constants and parameters such as subsidies, taxes standards
The essence of this point is that changing the tax rate from 18% to 25% or 13% makes no significant change to the was a system works. Donella Meadows says that numbers are dead last on the list of powerful interventions – diddling with the details, rearranging the deck chairs on the Titanic.
This means that it is of no real importance that Bitcoin has a 10 minute average block time, whereas Dash and Litecoin have an average of 2.5 minutes, or that Bitcoin uses SHA256 whereas Litecoin uses scrypt. It also means that the debate between (what is now) Bitcoin Core, XT, and Classic, over whether to have 1, 8, or 2MB blocks, the debate which has stalled Bitcoin development for longer than I can now remember, is over the least important part of the system. Meadows might have also called the block size limit debate in Bitcoin re-arranging deck chairs on the Titanic.
11. Buffers—The size of stabilizing stocks relative to their flows
In a bathtub, the tub is a buffer (or stock), whereas the tap and sinkhole are flows.
Dash has an interesting type of financial stock with its masternode collateral. A large amount of DASH is held by long-term holders to enable the decentralised masternode network, and acts as a sort of saving account for operators. But Meadows says this is a low-leverage point – whether collateral is specifically 1000 DASH, 100 DASH or 10 DASH is probably not significant.
10. Stock-and-Flow Structures—Physical systems and their nodes of intersection
This covers things like plumbing systems and road layouts. What is connected to what can significantly change how a system behaves, as a broken water pipe or a poorly-placed road quickly shows.
Cryptocurrencies don't have many significant physical stock and flow structures. The main one that springs to mind is the location of Bitcoin miners near hydroelectric power stations and other renewable power sources. Proof-of-stake mining removes that physical structure, but I won't consider that further as most top cryptocurrencies are proof-of-stake.
There is another type of structure, which is informational. This actually comes under the higher-leverage point 6. Information Flows, however I will describe them here, as they are revenant to points in between.
Dash has two very powerful structures that Bitcoin lacks.
First, Dash has proof-of-stake voting. Dash is able to collect the opinions of masternode operators (ie large stakeholders), and broadcast them in a verifiable way to the entire network. Bitcoin has no comparable system. It is like large BTC holders are each locked in their own room with only shouting loudly as a means of communication, while large DASH holders have internet connections and videoconferencing.
Second, Dash voting forms part of its treasury system, and controls a flow of money to development projects, which covers all activities that Dash needs. It can increase or decrease these flows at will. Bitcoin development is funded out of deep pockets, and is not necessarily driven by what holders want (as the previous structure is missing). In my mind I see this as a kind of hybrid structure: while technically it is informational (cryptocurrency money is pure information), it behaves in many ways like a flow of gold coins.
9. Delays—The lengths of time relative to the rates of system changes
Delays are the time it takes for one part of a system to react to another. They are the source of oscillations. Business suffers natural booms and busts because (for one reason), the time it takes to build up a business, means that by the time it is fully operational, the market may be oversaturated, and some will be forced to close down. Delays that are too short cause overcompensation, common on car dealer forecourts that routinely over- or under-order new stock. On a shorter scale, this is the source of flash-crashes in the stock market. Long delays make long-term planning impossible, for example building the correct number of power plants.
Mining hardware is extremely sensitive to delay – planning R&D and installation of mining hardware is fraught with uncertainty due to the long time scales involved.
Dash has enormously reduced one kind of delay: consensus formation. Thanks to the structure explained above, it is possible within hours or days to establish consensus of opinion among masternode operators, holding some together some 60% of the currency. For example the 2MB-blocksize proposal was resolved in a few hours. What Donella Meadows describes as diddling with the details was resolved as quickly as such a triviality should be.
8. Balancing Feedback Loops—The strengths of the feedbacks relative to the impacts they are trying to correct
A balancing loop is a structure that tries to correct a system that strays from its goal. For example: a thermostat keeping a room at a comfortable temperature; democratic voting keeping a political party from runaway despotism. Balancing loops are important because reinforcing loops are very powerful, and can throw a system out of control, like a steam engine running faster and faster until it explodes.
Thanks to its treasury system, Dash has a unique balancing feedback loop: the masternode network can cut funding to any project at will. That means that if – say – the Dash Core team adopted the same 1MB block size policy as Bitcoin Core, in defiance of the previous vote, the masternode network can bring the system back into control by cutting funding to Dash Core. This would not be the end of the matter (another Core team would be required to replace them), but it would start to resolve the problem with a much lower delay.
7. Reinforcing Feedback Loops—The strength of the gain of driving loops
This was the topic of the earlier post Success to the Successful (or: why the moon is not far enough), so I would suggest reading that for more detail, as I believe it is a distinguishing feature of Dash among top cryptocurrencies today.
To summarise, Dash has a loop where wise masternode voting funds successful projects, which increase the utility of Dash, which increases the price of DASH, which increases the value of the monthly development budget, which increases Dash's capacity to fund successful projects. Bitcoin does not have this loop: a rising price of BTC does not enable Bitcoin to develop itself more successfully, because development is not paid for with BTC, and it does in any case not have the structure to direct funds based on past success. Dash is inherently more able to develop itself than Bitcoin; it is already developing faster, and its development is accelerating thanks to this loop.
6. Information Flows—The structure of who does and does not have access to information
This is covered under 10. Stock-and-Flow Structures to make the flow of this post easier to read. But note that Meadows considered Information Flows as higher-leverage points, higher even than Balancing Feedback Loops and Reinforcing Feedback Loops.
5. Rules—Incentives, punishments, constraints
This covers everything from the physical laws of nature, through codes of laws enforced by courts, to the rules of trivial board games or casual agreements between friends.
Cryptocurrencies have some very hard rules. For example, to spend any BTC or DASH etc, you must be able to sign a valid transaction transferring the money from you to someone else. No amount of begging or pleading will sway the laws of cryptography, any more than begging or pleading can change the force of gravity.
The rules of the cryptocurrency block reward determine the incentives of participants in a cryptocurrency.
Bitcoin allocates 100% of the block reward to the miner of that block: there is a very strong incentive to mine Bitcoin blocks. However, there is no corresponding incentive for running a Bitcoin node. By splitting the block reward 45% to miners and 45% to masternode operators, Dash has ~4500 masternodes to Bitcoin's ~5500 nodes, despite the currency having a market cap somewhere around 1% of Bitcoin's. Also, Bitcoin has a balancing loop, whereby the more popular Bitcoin becomes, the higher the cost of running a node becomes, and so the lower the net incentive. Only companies and individuals who need to verify every transaction will run a Bitcoin node; with Dash, people will also run nodes because they are paid to do so.
One area where Dash is perhaps lacking in this section is punishments. Dash has an incentive that people are paid to do projects to develop Dash, and funding can be withdrawn if they fail to deliver, but they are not punished if they deceive or defraud. As Donella Meadows put 5. Rules quite high up the list, this suggests that adding punishments to negligently managed or fraudulent development projects might be a high-leverage intervention.
Meadows says that power over rules is real power. Who gets to decide the rules of a blockchain, decides the fate of a cryptocurrency. Who in Bitcoin, and who in Dash, decides whether blocks will be only 1MB in size, or whether they can be larger? In Dash, this is transparent, bearing in mind the complexities we considered earlier. In Bitcoin, it is considerably less so.
4. Self-organisation—The power to add, change, or evolve system structure
This covers evolution, the adaptation of an immune system, ants building a hive, DNA building an ant, members of a society agreeing on its laws.
This point is key why capitalism is superior to communism at generating economic development: the minds of everyone working as an entrepreneur, able to startup up and shut down businesses as they sense real demand, will always outpace the abilities of a central planner with limited information and limited capacity to process it. Simply, it creates a bigger, more adaptable brain out society, a more powerful mind to design and provide infrastructure, goods and services.
Dash has a layer of self-organisation at a higher level than businesses running on the blockchain. The treasury system works like a circulatory system, providing money to its DAO employees like nutrition to vital functions. This enables Dash to create development teams, marketing teams, market research teams, R&D teams, forum moderation teams and so on. The treasury lets Dash participants self-organise into a nervous system, and function as a viable, self-sustaining organisation.
3. Goals—The purpose or function of a system
The goal of a system is what it tries to achieve. The goal of a thermostat is the temperature it wants to maintain the room at. The goal of a political party is to get elected. The goal of a football team is to win the game.
What is the goal of Bitcoin? The Bitcoin whitepaper defines it as a peer-to-peer electronic cash system. What is the goal of Monero? The Monero website defines it as is a secure, private, untraceable currency. Dash? Well, Dash is digital cash – citation needed :)
Note that the block size debate in Bitcoin is really a debate over its goal – is it peer-to-peer cash, or is it a digital settlement layer for a Lightning Network? Dash has a consensus structure to confirm its goal, it has information and money flows to decide and fund its path to its goal, it has balancing loops to keep it in check. Dash has a clear goal; the goal of Bitcoin right now looks simply undefined. It's not clear who is in a position to define it. But Donella Meadows puts Goals way up the list of leverage points at number 3, so this matters enormously.
2. Paradigms—The mind-set out of which the system–its goals, structures, rules, delays, parameters–arises
At this point we may be stepping out of the sphere of any one individual cryptocurrency. What do we want as money? Do we want debt-money created by private institutions? Do we want hard money like gold? Do we want to return to peer-to-peer credit? Do we want centrally-planned money, or market-driven money?
I won't attempt to answer any questions here.
1. Transcending Paradigms
This is the idea to stay unattached, to realise that no one paradigm is true. Maybe the head of a central bank will come to understand the advantages of cryptocurrency systems; maybe a die-hard libertarian will appreciate the positive role regulation and government intervention can have in financial systems. Meadows describes this as to let go into not-knowing. For me it is to accept that everyone has their own mindset and the goals that this entails, and they come to this mindset through experiences no less real or valid than one's own.
At this point we have completely escaped the petty squabbling of 1MB vs 2MB blocks, and opened a discussion on what paradigm of money will best suit the needs of the modern world. That is a debate I think not even Donella Meadows would find easy to resolve.

I hope this analysis proves useful to someone. If it has peeked anyone's interested, I wholeheartedly recommend reading the whole of Thinking in Systems, which is both short and accessible to anyone with an inquisitive mind.
(Apologies for any errors, I've typed this quickly in a few spare hours)
submitted by ashmoran to dashpay [link] [comments]

r/Bitcoin recap - November 2018

Hi Bitcoiners!
I’m back with the 23rd monthly Bitcoin news recap.
For those unfamiliar, each day I pick out the most popularelevant/interesting stories in Bitcoin and save them. At the end of the month I release them in one batch, to give you a quick (but not necessarily the best) overview of what happened in bitcoin over the past month.
You can see recaps of the previous months on Bitcoinsnippets.com
A recap of Bitcoin in November 2018
Adoption
Development
Security
Mining
Business
Research
Education
Regulation & Politics
Archeology (Financial Incumbents)
Price & Trading
Fun & Other
Congratulations Bitcoin on about to be 1 Million subscribers! See you next month!
submitted by SamWouters to Bitcoin [link] [comments]

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