This is a Bitcoin (BTC) SHA256 Solo Mining Pool

BitcoinPrivate

[link]

Bitcoin Private

Bitcoin Private making Bitcoin faster, more decentralised and private.
[link]

Bitcoin Private

A subreddit to discuss Bitcoin Private. Like Bitcoin, but Private.
[link]

Would you like to start mining Bitcoin Gold? MINING POOL HUB offers great stability and low fees. Servers are located in USA, EU & Asia More info => bitcoin-gold.miningpoolhub.com #BitcoinGold #Miningpoolhub #GPUMining #GPU #Bitcoin #BTC #blockchain

Would you like to start mining Bitcoin Gold? MINING POOL HUB offers great stability and low fees. Servers are located in USA, EU & Asia More info => bitcoin-gold.miningpoolhub.com #BitcoinGold #Miningpoolhub #GPUMining #GPU #Bitcoin #BTC #blockchain submitted by Asabmoni to BitcoinGoldHQ [link] [comments]

[Partners] Thinking of becoming a $BTG miner? Start mining with coinfoundry mining pool. -server locations across the globe -PPLNS payment system -Mining guides -Fee: 0,6% => coinfoundry.org #BitcoinGold #coinfoundry #Bitcoin #GPUmining

[Partners] Thinking of becoming a $BTG miner? Start mining with coinfoundry mining pool. -server locations across the globe -PPLNS payment system -Mining guides -Fee: 0,6% => coinfoundry.org #BitcoinGold #coinfoundry #Bitcoin #GPUmining submitted by Asabmoni to BitcoinGoldHQ [link] [comments]

Bitcoin Cash Mining pools with US servers

Just need a quick opinion on which US mining pool do you miners favor?
submitted by tripodoreo to Bitcoincash [link] [comments]

Bitcoin Cash Mining pools with US servers /r/Bitcoincash

Bitcoin Cash Mining pools with US servers /Bitcoincash submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Bitcoin mining pool ViaBTC launches US stratum server

Bitcoin mining pool ViaBTC launches US stratum server submitted by chinawat to btc [link] [comments]

Bitcoin mining pool ViaBTC launches US stratum server

Bitcoin mining pool ViaBTC launches US stratum server submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Bitcoin mining pool ViaBTC launches US stratum server - EconoTimes

submitted by agentf90 to BTCuncensored [link] [comments]

Of the top 10 mining pools, which ones are powered by user-hashing, and which ones have their own giant, liquid-cooled server farms? /r/Bitcoin

Of the top 10 mining pools, which ones are powered by user-hashing, and which ones have their own giant, liquid-cooled server farms? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Bitcoin just had a difficulty adjustment of almost 15%. The biggest adjustment since January 2018.

Bitcoin just had a difficulty adjustment of almost 15%. The biggest adjustment since January 2018. submitted by Bitcoin_Magazine to Bitcoin [link] [comments]

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

almkglor your post has been copied because one or more comments in this topic have been removed. This copy will preserve unmoderated topic. If you would like to opt-out, please send a message using [this link].
[deleted comment]
[deleted comment]
[deleted comment]
submitted by anticensor_bot to u/anticensor_bot [link] [comments]

Weekly Crypto News — July, 03

What important crypto events happened last week?
Regulation, Government, Mass Adoption
📌 The U.S. court classified Coinbase as a traditional bank after the exchange revealed its customer information at the request of the FBI. This decision was made when considering the appeal of Richard Gratkowski, sentenced to 5 years and 10 months in prison. Earlier, the FBI found out that between June 2016 and May 2017, Richard Gratkovsky used Bitcoins to purchase prohibited pornographic materials involving minors. Having detected the wallets used by him, the agency turned to Coinbase with a request to disclose information about this client. The exchange complied with this requirement without a court order.
📌 Binance Exchange has confirmed the launch of a cryptocurrency debit card in partnership with Swipe. Information about this appeared on the official website of the company but later disappeared. One of the features of the card will be the ability to exchange cryptocurrencies for fiat money in real-time. Users will be able to transfer money to the card directly from the Binance trading account. Payments will be instant, funds can be spent immediately after crediting. In addition, cardholders will be able to withdraw cash from ATMs.
📌 The District of Columbia Bar has allowed lawyers in Washington D.C. to accept payments in Bitcoins and other cryptocurrencies. Representatives of the organization noted that cryptocurrencies are rapidly gaining popularity as a means of payment and lawyers cannot stand aside from these changes. Acceptance of payment in crypto is permissible if the lawyer is able to ensure the safe storage of assets. To do this, he must have basic knowledge in the field of blockchain.
Projects, Collaborations, Startups
📌 BlockFi, a company operating in the cryptocurrency lending market, reported a doubling of monthly revenue in the second quarter. The driver was halving and launching a mobile application. “By now, monthly income has quadrupled since the end of last year and doubled if we start from the end of March,” said Zac Prince, co-founder, and CEO of the startup.
📌 CoinGecko, an analytical service, has announced a partnership with cybersecurity company Hacken. As part of the collaboration, CoinGecko integrated into the so-called Trust Score cryptocurrency exchange security assessment metrics based on the platform data from Hacken. Among others, Hacken considers platform infrastructure security, including server security, two-factor user authentication, spam and phishing protection, and other criteria.
📌 According to Messari, the market capitalization of dollar-tied stablecoin Tether (USDT) reached $10.3 billion. The growth since the beginning of the year, when the figure was $4.76 billion, exceeded 116%. Other stablecoins are significantly inferior to USDT in terms of market supply.
📌 Binance cryptocurrency exchange has completed a major update of the trading engine, increasing the processing speed of operations by 10 times, company CEO Changpeng Zhao said. According to him, the update was the largest in the history of Binance. It took two years to develop it. Zhao noted that in doing so, the exchange is preparing the “next wave” of cryptocurrency market growth.
Blockchain
📌 According to Messari, Bitcoin and Ethereum account for more than 99% of the commissions received by all miners. Over the past 24 hours, the total amount of commissions in the Bitcoin network has amounted to $407,571. Ethereum has a significantly higher rate — $814,082.
📌 On June 30, at block # 637 056 in the Bitcoin network, the planned recalculation of mining complexity took place. The indicator has undergone the most insignificant change since March 22, 2010, having decreased by 0.0033% from 15.7847 T to 15.7842 T. Thus, the complexity of mining Bitcoin almost did not change for the first time in 10 years.
📌 A transaction of 101 857 BTC (~$ 933 million at the time of sending) was recorded in the Bitcoin network between anonymous addresses. Transaction passed between anonymous addresses. The commission was only 48 cents. An anonymous whale used the SegWit protocol, which reduced costs by 41%.
📌 One of the Bitcoin users included the message “Hello, Noah! Welcome to the world, little one” in one of the transactions, thus recording the birth of their first child. The unchanging and censorship-resistant nature of Bitcoin will ensure that this message remains forever on the blockchain while it continues to function. The current case demonstrates a widely discussed scenario for using the first cryptocurrency as a decentralized database.
Hacking, Cyber Crimes
📌 Russian Sergei Medvedev admitted involvement in the cybercriminal organization Infraud, which traded stolen personal data, compromised credit cards, malware, and other illegal things. “Over the course of its seven-year history, Infraud caused an estimated loss of about $2.2 billion and more than $568 million in actual losses to a wide range of financial institutions, sellers and individuals,” the US Department of Justice declared.
📌 The criminals received a $1.14 million ransom after a successful attack on the University of California. The software installed by hackers encrypted the data on the university’s servers at the School of Medicine, making the information temporarily unavailable. To fix the problem, the institution had to pay 116.4 BTC.
📌 An unknown hacker managed to withdraw $500,000 in altcoins WETH, WBTC, SNX, and LINK from the pool of the Balancer Labs DeFi project using a smart contract vulnerability that allowed an attacker to create a shortage of funds in the pools.

That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
submitted by CoinjoyAssistant to btc [link] [comments]

Stellar (XLM) saw a 50% move to the upside in January. Beyond price, what exactly is Stellar and what are Stellar's fundamentals?

- Stellar Fundamental Report-
The report is easy to share with people unfamiliar with the project. Here is the overview section pulled from the report.
Overview
Stellar is a platform created in 2014 by former Ripple founder Jed McCaleb, that uses the Lumen token (XLM) as its native token. Stellar advertises itself as an open-source, distributed payments infrastructure looking to connect people from all over the world by allowing for more efficient cross-border payments. The XLM token is used within the protocol for the payment of transaction fees and for creating digital assets within the Stellar network. In doing so, XLM looks to make monetary transactions cheaper and faster than the current banking system.
Stellar Strengths
*Above-average amount of exchange listings and liquidity
*Capable of thousands of transactions per second with minimal transaction fees
*Strong partnerships with established organizations including IBM
Stellar Weaknesses
*Stellar Foundation holds ~60% of all XLM in existence, creating a central point of failure and strong degree of centralization risk for the project writ large
*Network contains only ~35 validators which are heavily centralized around SDF nodes creating network-wide vulnerability
*Small team (~7) control the majority of the development work which has decreased since 2019
*Questionable response by the Stellar team to disclose a bug that was discovered (and patched) in 2017
*No financial incentive (like a mining reward in the Bitcoin protocol) to become a node, which could lead to a dearth of nodes and node centralization
submitted by schism1 to CryptoCurrency [link] [comments]

Weekly Crypto News — July, 03

What important crypto events happened last week?
Regulation, Government, Mass Adoption
📌 The U.S. court classified Coinbase as a traditional bank after the exchange revealed its customer information at the request of the FBI. This decision was made when considering the appeal of Richard Gratkowski, sentenced to 5 years and 10 months in prison. Earlier, the FBI found out that between June 2016 and May 2017, Richard Gratkovsky used Bitcoins to purchase prohibited pornographic materials involving minors. Having detected the wallets used by him, the agency turned to Coinbase with a request to disclose information about this client. The exchange complied with this requirement without a court order.
📌 Binance Exchange has confirmed the launch of a cryptocurrency debit card in partnership with Swipe. Information about this appeared on the official website of the company but later disappeared. One of the features of the card will be the ability to exchange cryptocurrencies for fiat money in real-time. Users will be able to transfer money to the card directly from the Binance trading account. Payments will be instant, funds can be spent immediately after crediting. In addition, cardholders will be able to withdraw cash from ATMs.
📌 The District of Columbia Bar has allowed lawyers in Washington D.C. to accept payments in Bitcoins and other cryptocurrencies. Representatives of the organization noted that cryptocurrencies are rapidly gaining popularity as a means of payment and lawyers cannot stand aside from these changes. Acceptance of payment in crypto is permissible if the lawyer is able to ensure the safe storage of assets. To do this, he must have basic knowledge in the field of blockchain.
Projects, Collaborations, Startups
📌 BlockFi, a company operating in the cryptocurrency lending market, reported a doubling of monthly revenue in the second quarter. The driver was halving and launching a mobile application. “By now, monthly income has quadrupled since the end of last year and doubled if we start from the end of March,” said Zac Prince, co-founder, and CEO of the startup.
📌 CoinGecko, an analytical service, has announced a partnership with cybersecurity company Hacken. As part of the collaboration, CoinGecko integrated into the so-called Trust Score cryptocurrency exchange security assessment metrics based on the platform data from Hacken. Among others, Hacken considers platform infrastructure security, including server security, two-factor user authentication, spam and phishing protection, and other criteria.
📌 According to Messari, the market capitalization of dollar-tied stablecoin Tether (USDT) reached $10.3 billion. The growth since the beginning of the year, when the figure was $4.76 billion, exceeded 116%. Other stablecoins are significantly inferior to USDT in terms of market supply.
📌 Binance cryptocurrency exchange has completed a major update of the trading engine, increasing the processing speed of operations by 10 times, company CEO Changpeng Zhao said. According to him, the update was the largest in the history of Binance. It took two years to develop it. Zhao noted that in doing so, the exchange is preparing the “next wave” of cryptocurrency market growth.
Blockchain
📌 According to Messari, Bitcoin and Ethereum account for more than 99% of the commissions received by all miners. Over the past 24 hours, the total amount of commissions in the Bitcoin network has amounted to $407,571. Ethereum has a significantly higher rate — $814,082.
📌 On June 30, at block # 637 056 in the Bitcoin network, the planned recalculation of mining complexity took place. The indicator has undergone the most insignificant change since March 22, 2010, having decreased by 0.0033% from 15.7847 T to 15.7842 T. Thus, the complexity of mining Bitcoin almost did not change for the first time in 10 years.
📌 A transaction of 101 857 BTC (~$ 933 million at the time of sending) was recorded in the Bitcoin network between anonymous addresses. Transaction passed between anonymous addresses. The commission was only 48 cents. An anonymous whale used the SegWit protocol, which reduced costs by 41%.
📌 One of the Bitcoin users included the message “Hello, Noah! Welcome to the world, little one” in one of the transactions, thus recording the birth of their first child. The unchanging and censorship-resistant nature of Bitcoin will ensure that this message remains forever on the blockchain while it continues to function. The current case demonstrates a widely discussed scenario for using the first cryptocurrency as a decentralized database.
Hacking, Cyber Crimes
📌 Russian Sergei Medvedev admitted involvement in the cybercriminal organization Infraud, which traded stolen personal data, compromised credit cards, malware, and other illegal things. “Over the course of its seven-year history, Infraud caused an estimated loss of about $2.2 billion and more than $568 million in actual losses to a wide range of financial institutions, sellers and individuals,” the US Department of Justice declared.
📌 The criminals received a $1.14 million ransom after a successful attack on the University of California. The software installed by hackers encrypted the data on the university’s servers at the School of Medicine, making the information temporarily unavailable. To fix the problem, the institution had to pay 116.4 BTC.
📌 An unknown hacker managed to withdraw $500,000 in altcoins WETH, WBTC, SNX, and LINK from the pool of the Balancer Labs DeFi project using a smart contract vulnerability that allowed an attacker to create a shortage of funds in the pools.

That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
submitted by CoinjoyAssistant to CryptoNews [link] [comments]

Weekly Crypto News — July, 03

What important crypto events happened last week?
Regulation, Government, Mass Adoption
📌 The U.S. court classified Coinbase as a traditional bank after the exchange revealed its customer information at the request of the FBI. This decision was made when considering the appeal of Richard Gratkowski, sentenced to 5 years and 10 months in prison. Earlier, the FBI found out that between June 2016 and May 2017, Richard Gratkovsky used Bitcoins to purchase prohibited pornographic materials involving minors. Having detected the wallets used by him, the agency turned to Coinbase with a request to disclose information about this client. The exchange complied with this requirement without a court order.
📌 Binance Exchange has confirmed the launch of a cryptocurrency debit card in partnership with Swipe. Information about this appeared on the official website of the company but later disappeared. One of the features of the card will be the ability to exchange cryptocurrencies for fiat money in real-time. Users will be able to transfer money to the card directly from the Binance trading account. Payments will be instant, funds can be spent immediately after crediting. In addition, cardholders will be able to withdraw cash from ATMs.
📌 The District of Columbia Bar has allowed lawyers in Washington D.C. to accept payments in Bitcoins and other cryptocurrencies. Representatives of the organization noted that cryptocurrencies are rapidly gaining popularity as a means of payment and lawyers cannot stand aside from these changes. Acceptance of payment in crypto is permissible if the lawyer is able to ensure the safe storage of assets. To do this, he must have basic knowledge in the field of blockchain.
Projects, Collaborations, Startups
📌 BlockFi, a company operating in the cryptocurrency lending market, reported a doubling of monthly revenue in the second quarter. The driver was halving and launching a mobile application. “By now, monthly income has quadrupled since the end of last year and doubled if we start from the end of March,” said Zac Prince, co-founder, and CEO of the startup.
📌 CoinGecko, an analytical service, has announced a partnership with cybersecurity company Hacken. As part of the collaboration, CoinGecko integrated into the so-called Trust Score cryptocurrency exchange security assessment metrics based on the platform data from Hacken. Among others, Hacken considers platform infrastructure security, including server security, two-factor user authentication, spam and phishing protection, and other criteria.
📌 According to Messari, the market capitalization of dollar-tied stablecoin Tether (USDT) reached $10.3 billion. The growth since the beginning of the year, when the figure was $4.76 billion, exceeded 116%. Other stablecoins are significantly inferior to USDT in terms of market supply.
📌 Binance cryptocurrency exchange has completed a major update of the trading engine, increasing the processing speed of operations by 10 times, company CEO Changpeng Zhao said. According to him, the update was the largest in the history of Binance. It took two years to develop it. Zhao noted that in doing so, the exchange is preparing the “next wave” of cryptocurrency market growth.
Blockchain
📌 According to Messari, Bitcoin and Ethereum account for more than 99% of the commissions received by all miners. Over the past 24 hours, the total amount of commissions in the Bitcoin network has amounted to $407,571. Ethereum has a significantly higher rate — $814,082.
📌 On June 30, at block # 637 056 in the Bitcoin network, the planned recalculation of mining complexity took place. The indicator has undergone the most insignificant change since March 22, 2010, having decreased by 0.0033% from 15.7847 T to 15.7842 T. Thus, the complexity of mining Bitcoin almost did not change for the first time in 10 years.
📌 A transaction of 101 857 BTC (~$ 933 million at the time of sending) was recorded in the Bitcoin network between anonymous addresses. Transaction passed between anonymous addresses. The commission was only 48 cents. An anonymous whale used the SegWit protocol, which reduced costs by 41%.
📌 One of the Bitcoin users included the message “Hello, Noah! Welcome to the world, little one” in one of the transactions, thus recording the birth of their first child. The unchanging and censorship-resistant nature of Bitcoin will ensure that this message remains forever on the blockchain while it continues to function. The current case demonstrates a widely discussed scenario for using the first cryptocurrency as a decentralized database.
Hacking, Cyber Crimes
📌 Russian Sergei Medvedev admitted involvement in the cybercriminal organization Infraud, which traded stolen personal data, compromised credit cards, malware, and other illegal things. “Over the course of its seven-year history, Infraud caused an estimated loss of about $2.2 billion and more than $568 million in actual losses to a wide range of financial institutions, sellers and individuals,” the US Department of Justice declared.
📌 The criminals received a $1.14 million ransom after a successful attack on the University of California. The software installed by hackers encrypted the data on the university’s servers at the School of Medicine, making the information temporarily unavailable. To fix the problem, the institution had to pay 116.4 BTC.
📌 An unknown hacker managed to withdraw $500,000 in altcoins WETH, WBTC, SNX, and LINK from the pool of the Balancer Labs DeFi project using a smart contract vulnerability that allowed an attacker to create a shortage of funds in the pools.

That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
submitted by CoinjoyAssistant to CryptoMarkets [link] [comments]

A few questions about blockchain

Hello blocktech!
I have a few questions about the blockchain, but I am having trouble finding information that is more than a basic overview of the blockchain. For the sake of simplicity, I am going to be referring only to the Bitcoin chain for these questions, as different chains may use different solutions.
Does every miner download the entire chain?
Given the number of transactions, it seems that this would require a lot of memory, and would increase in this respect over time.
If every miner has a copy, where did they get it?
Since there is no central server, who provides a new user with the chain? Wouldn't it take a lot of bandwidth for some random miner to send the entire chain to a new user?
Once they have the chain, how do they get updates?
Once a new block is mined, how does a person who didn't mine it get the update? Is it sent one person at a time from peer to peer?
How does a miner access the pool of unconfirmed transactions?
Again, once someone makes a transaction that is added to the pool, how do miners access the pool? How is it ensured that none of the transactions are left out of a block? If you and I both mine a block, you slightly before me, and someone makes a transaction in between, wouldn't their transaction get lost as new blocks were added on top of yours rather than mine?
If I mine a block, is my reward stored as a transaction in that block or the subsequent one?
Or is the block itself verification of the reward?
How do cryptocurrency wallets stay up to date?
If I am mining and housing a wallet on the same computer, and I mine a block shortly after someone else has beaten me to it, how is it ensured that my wallet doesn't reflect me having mined the block?
I will certainly have more questions after receiving some answers, so I appreciate anyone taking the time to explain this to me!
submitted by EricMeehan to CryptoTechnology [link] [comments]

Removed comments/submissions for /u/technedigitus

Hi technedigitus, you're not shadowbanned, but 19 of your most recent 153 comments/submissions were removed (either automatically or by human moderators).

Comments:

fvftk3t in gaming on 20 Jun 20 (1pts):
Oh Camper - A classical Camper Picture (TR in Dust2)
dxgy22o in Monero on 16 Apr 18 (1pts):
Everybody here already read the "Philosophy Behind Freenet" by Ian Clark, right?
Without anonymity, there is no democracy.
dxgxbbf in Monero on 16 Apr 18 (1pts):
Snowden is an advertising boy of Zcash... : P
BTW, Mr. Robot is a nice serie! (Session 1... but... after session 1 Eliot becomes just a no sense, stupid and overpower guy)
dsy3td6 in Monero on 20 Jan 18 (1pts):
4 Mouths with 350 H/s
Payment: https://imgur.com/agHater
Procedure: https://imgur.com/4EKfWCW
Pool Pic: https://imgur.com/JWHFhXD
I just followed the procedure above. It is possible...
Two...
dsy2oaz in Monero on 20 Jan 18 (1pts):
Afaik, yes. You can do this in a docker, but if you test and check the performance, you will get the correct answer to your question! (sorry for delay to reply)
dn5ylfq in Monero on 18 Sep 17 (1pts):
Other criptocurrencies for sure will be created for this...
But for know, these news tells me just one thing: more volume of Monero in market!
dmzkn8d in Monero on 14 Sep 17 (1pts):
Any upgrade news in changer[dot]com?
cwrq3kb in dogecoin on 07 Nov 15 (1pts):
I liked this idea...
Mining, Faceoutting and Exchanging are all easy ways to movement Dogecoins in Market.
I could not try to mine dogecoins yet...
But I'm trying faceouts...
In 5 weeks minning...
cw19vep in brasil on 16 Oct 15 (1pts):
Para cada curto parágrafo, um video ilustrativo complementar.
Bitcoin de uma forma simples para todos.
clczyui in techsupport on 18 Oct 14 (1pts):
Use Swiss Privacy Foundation DNS Servers:
(no logs, servers in Swiss Territory)
clczomk in deepweb on 18 Oct 14 (1pts):
any comment are welcome
clczfm8 in deepweb on 18 Oct 14 (1pts):
simples message :)
ckzwq5f in deepweb on 04 Oct 14 (1pts):
Any comments about this text?
ckytmuv in deepweb on 02 Oct 14 (1pts):
cruel... but true is something like this...
ckyr8d0 in deepweb on 02 Oct 14 (1pts):
Ok... I will write these articles to english... But it take some time... I already translated "Deep Web - Same Article, English Version"... Gimme time...
Obs.: Brazilian Portugues. Not Spanish......

Submissions:

7yv6my in MoneroMining on 20 Feb 18 (1pts):
(Question) Any way to mine XMR in a OpenWRT device?
3rvn25 in dogecoin on 07 Nov 15 (1pts):
Install Dogecoin Core in Linux
3rqvfm in dogecoin on 06 Nov 15 (1pts):
Just 3 questions
3rp01k in dogecoin on 05 Nov 15 (1pts):
Hi Doge Guys!
I'm a bot. My home is at /CommentRemovalChecker - check if your posts have been removed! (How to use)
Help us expose and stand up to social media bias and censorship!
submitted by MarkdownShadowBot to CommentRemovalChecker [link] [comments]

Weekly Crypto News — July, 03

What important crypto events happened last week?
Regulation, Government, Mass Adoption
📌 The U.S. court classified Coinbase as a traditional bank after the exchange revealed its customer information at the request of the FBI. This decision was made when considering the appeal of Richard Gratkowski, sentenced to 5 years and 10 months in prison. Earlier, the FBI found out that between June 2016 and May 2017, Richard Gratkovsky used Bitcoins to purchase prohibited pornographic materials involving minors. Having detected the wallets used by him, the agency turned to Coinbase with a request to disclose information about this client. The exchange complied with this requirement without a court order.
📌 Binance Exchange has confirmed the launch of a cryptocurrency debit card in partnership with Swipe. Information about this appeared on the official website of the company but later disappeared. One of the features of the card will be the ability to exchange cryptocurrencies for fiat money in real-time. Users will be able to transfer money to the card directly from the Binance trading account. Payments will be instant, funds can be spent immediately after crediting. In addition, cardholders will be able to withdraw cash from ATMs.
📌 The District of Columbia Bar has allowed lawyers in Washington D.C. to accept payments in Bitcoins and other cryptocurrencies. Representatives of the organization noted that cryptocurrencies are rapidly gaining popularity as a means of payment and lawyers cannot stand aside from these changes. Acceptance of payment in crypto is permissible if the lawyer is able to ensure the safe storage of assets. To do this, he must have basic knowledge in the field of blockchain.
Projects, Collaborations, Startups
📌 BlockFi, a company operating in the cryptocurrency lending market, reported a doubling of monthly revenue in the second quarter. The driver was halving and launching a mobile application. “By now, monthly income has quadrupled since the end of last year and doubled if we start from the end of March,” said Zac Prince, co-founder, and CEO of the startup.
📌 CoinGecko, an analytical service, has announced a partnership with cybersecurity company Hacken. As part of the collaboration, CoinGecko integrated into the so-called Trust Score cryptocurrency exchange security assessment metrics based on the platform data from Hacken. Among others, Hacken considers platform infrastructure security, including server security, two-factor user authentication, spam and phishing protection, and other criteria.
📌 According to Messari, the market capitalization of dollar-tied stablecoin Tether (USDT) reached $10.3 billion. The growth since the beginning of the year, when the figure was $4.76 billion, exceeded 116%. Other stablecoins are significantly inferior to USDT in terms of market supply.
📌 Binance cryptocurrency exchange has completed a major update of the trading engine, increasing the processing speed of operations by 10 times, company CEO Changpeng Zhao said. According to him, the update was the largest in the history of Binance. It took two years to develop it. Zhao noted that in doing so, the exchange is preparing the “next wave” of cryptocurrency market growth.
Blockchain
📌 According to Messari, Bitcoin and Ethereum account for more than 99% of the commissions received by all miners. Over the past 24 hours, the total amount of commissions in the Bitcoin network has amounted to $407,571. Ethereum has a significantly higher rate — $814,082.
📌 On June 30, at block # 637 056 in the Bitcoin network, the planned recalculation of mining complexity took place. The indicator has undergone the most insignificant change since March 22, 2010, having decreased by 0.0033% from 15.7847 T to 15.7842 T. Thus, the complexity of mining Bitcoin almost did not change for the first time in 10 years.
📌 A transaction of 101 857 BTC (~$ 933 million at the time of sending) was recorded in the Bitcoin network between anonymous addresses. Transaction passed between anonymous addresses. The commission was only 48 cents. An anonymous whale used the SegWit protocol, which reduced costs by 41%.
📌 One of the Bitcoin users included the message “Hello, Noah! Welcome to the world, little one” in one of the transactions, thus recording the birth of their first child. The unchanging and censorship-resistant nature of Bitcoin will ensure that this message remains forever on the blockchain while it continues to function. The current case demonstrates a widely discussed scenario for using the first cryptocurrency as a decentralized database.
Hacking, Cyber Crimes
📌 Russian Sergei Medvedev admitted involvement in the cybercriminal organization Infraud, which traded stolen personal data, compromised credit cards, malware, and other illegal things. “Over the course of its seven-year history, Infraud caused an estimated loss of about $2.2 billion and more than $568 million in actual losses to a wide range of financial institutions, sellers and individuals,” the US Department of Justice declared.
📌 The criminals received a $1.14 million ransom after a successful attack on the University of California. The software installed by hackers encrypted the data on the university’s servers at the School of Medicine, making the information temporarily unavailable. To fix the problem, the institution had to pay 116.4 BTC.
📌 An unknown hacker managed to withdraw $500,000 in altcoins WETH, WBTC, SNX, and LINK from the pool of the Balancer Labs DeFi project using a smart contract vulnerability that allowed an attacker to create a shortage of funds in the pools.

That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
submitted by CoinjoyAssistant to u/CoinjoyAssistant [link] [comments]

Weekly Crypto News — July, 03

What important crypto events happened last week?
Regulation, Government, Mass Adoption
📌 The U.S. court classified Coinbase as a traditional bank after the exchange revealed its customer information at the request of the FBI. This decision was made when considering the appeal of Richard Gratkowski, sentenced to 5 years and 10 months in prison. Earlier, the FBI found out that between June 2016 and May 2017, Richard Gratkovsky used Bitcoins to purchase prohibited pornographic materials involving minors. Having detected the wallets used by him, the agency turned to Coinbase with a request to disclose information about this client. The exchange complied with this requirement without a court order.
📌 Binance Exchange has confirmed the launch of a cryptocurrency debit card in partnership with Swipe. Information about this appeared on the official website of the company but later disappeared. One of the features of the card will be the ability to exchange cryptocurrencies for fiat money in real-time. Users will be able to transfer money to the card directly from the Binance trading account. Payments will be instant, funds can be spent immediately after crediting. In addition, cardholders will be able to withdraw cash from ATMs.
📌 The District of Columbia Bar has allowed lawyers in Washington D.C. to accept payments in Bitcoins and other cryptocurrencies. Representatives of the organization noted that cryptocurrencies are rapidly gaining popularity as a means of payment and lawyers cannot stand aside from these changes. Acceptance of payment in crypto is permissible if the lawyer is able to ensure the safe storage of assets. To do this, he must have basic knowledge in the field of blockchain.
Projects, Collaborations, Startups
📌 BlockFi, a company operating in the cryptocurrency lending market, reported a doubling of monthly revenue in the second quarter. The driver was halving and launching a mobile application. “By now, monthly income has quadrupled since the end of last year and doubled if we start from the end of March,” said Zac Prince, co-founder, and CEO of the startup.
📌 CoinGecko, an analytical service, has announced a partnership with cybersecurity company Hacken. As part of the collaboration, CoinGecko integrated into the so-called Trust Score cryptocurrency exchange security assessment metrics based on the platform data from Hacken. Among others, Hacken considers platform infrastructure security, including server security, two-factor user authentication, spam and phishing protection, and other criteria.
📌 According to Messari, the market capitalization of dollar-tied stablecoin Tether (USDT) reached $10.3 billion. The growth since the beginning of the year, when the figure was $4.76 billion, exceeded 116%. Other stablecoins are significantly inferior to USDT in terms of market supply.
📌 Binance cryptocurrency exchange has completed a major update of the trading engine, increasing the processing speed of operations by 10 times, company CEO Changpeng Zhao said. According to him, the update was the largest in the history of Binance. It took two years to develop it. Zhao noted that in doing so, the exchange is preparing the “next wave” of cryptocurrency market growth.
Blockchain
📌 According to Messari, Bitcoin and Ethereum account for more than 99% of the commissions received by all miners. Over the past 24 hours, the total amount of commissions in the Bitcoin network has amounted to $407,571. Ethereum has a significantly higher rate — $814,082.
📌 On June 30, at block # 637 056 in the Bitcoin network, the planned recalculation of mining complexity took place. The indicator has undergone the most insignificant change since March 22, 2010, having decreased by 0.0033% from 15.7847 T to 15.7842 T. Thus, the complexity of mining Bitcoin almost did not change for the first time in 10 years.
📌 A transaction of 101 857 BTC (~$ 933 million at the time of sending) was recorded in the Bitcoin network between anonymous addresses. Transaction passed between anonymous addresses. The commission was only 48 cents. An anonymous whale used the SegWit protocol, which reduced costs by 41%.
📌 One of the Bitcoin users included the message “Hello, Noah! Welcome to the world, little one” in one of the transactions, thus recording the birth of their first child. The unchanging and censorship-resistant nature of Bitcoin will ensure that this message remains forever on the blockchain while it continues to function. The current case demonstrates a widely discussed scenario for using the first cryptocurrency as a decentralized database.
Hacking, Cyber Crimes
📌 Russian Sergei Medvedev admitted involvement in the cybercriminal organization Infraud, which traded stolen personal data, compromised credit cards, malware, and other illegal things. “Over the course of its seven-year history, Infraud caused an estimated loss of about $2.2 billion and more than $568 million in actual losses to a wide range of financial institutions, sellers and individuals,” the US Department of Justice declared.
📌 The criminals received a $1.14 million ransom after a successful attack on the University of California. The software installed by hackers encrypted the data on the university’s servers at the School of Medicine, making the information temporarily unavailable. To fix the problem, the institution had to pay 116.4 BTC.
📌 An unknown hacker managed to withdraw $500,000 in altcoins WETH, WBTC, SNX, and LINK from the pool of the Balancer Labs DeFi project using a smart contract vulnerability that allowed an attacker to create a shortage of funds in the pools.

That’s all for now! For more details follow us on Twitter, subscribe to our YouTube channel, join our Telegram.
submitted by CoinjoyAssistant to CryptoCurrencies [link] [comments]

Looking for Technical Information about Mining Pools

I'm doing research on how exactly bitcoins are mined, and I'm looking for detailed information about how mining pools work - i.e. what exactly is the pool server telling each participating miner to do.
It's so far my understanding that, when Bitcoins are mined, the following steps take place:
  1. Transactions from the mempool are selected for a new block; this may or may not be all the transactions in said mempool. A coinable transaction - which consists of the miner's wallet's address and other arbitrary data - that will help create new Bitcoin will also be added to the new block.
  2. All of said transactions are hashed together into a Merkle Root. The hashing algorithm is Double SHA-256.
  3. A block header is formed for the new block. Said block header consists of a Version, the Block Hash of the Previous Block in the Blockchain, said Merkle Root from earlier, a timestamp in UTC, the target, and a nonce - which is 32 bits long and can be any value from 0x00000000 to 0xFFFFFFFF (a total of 4,294,967,296 nonce values in total).
  4. The nonce value is set to 0x00000000, and said block header is double hashed to get the Block Hash of the current block; and if said Block Hash starts with a certain number of zeroes (depending on the difficulty), the miner sends the block to the Bitcoin Network, the block successfully added to the blockchain and the miner is awarded with newly created bitcoin.
  5. But if said Block Hash does not start with the required number of zeroes, said block will not be accepted by the network, and the miner Double Hashes the block again, but with a different nonce value; but if none of the 4,294,967,296 nonce values yields a Block Hash with the required number of zeroes, it will be impossible to add the block to the network - and in that case, the miner will either need to change the timestamp and try all 4,294,967,296 nonce values again, or the miner will need to start all over again and compose a new block with a different set of transactions (either a different coinable transaction, a different set of transactions from the mempool, or both).
Now, what I'm trying to figure out is what exactly each miner is doing differently in a mining pool, and if it is different depending on the pool.
One thing I've read is that a mining pool gives each participating miner a different set of transactions from the mempool.
I've also read that, because the most sophisticated miners can try all 4,294,967,296 nonce values in less than a fraction of a second, and since the timestamp can only be updated every second, the coinbase transaction is used as a "second nonce" (although, it is my understanding that, being part of a transaction, if this "extra nonce" is changed, all the transactions need to be double hashed into a new Merkle Root); and I may have read someplace that miners could also be given the same set of transactions from the mempool, but are each told to use a different set of "extra nonce" values for the coinbase transaction.
Is there anything else that pools tell miners to do differently? Is each pool different in the instructions it gives to the participating miners? Did I get anything wrong?
I want to make sure I have a full technical understanding of what mining pools are doing to mine bitcoin.
submitted by sparky77734 to Bitcoin [link] [comments]

The Best Cryptocurrency Mining Pools in 2020

This review is not sponsored! Neither it is an ad.
How to choose a mining pool? How to avoid stale shares? The pros and cons of different services.

What is a cryptocurrency mining pool?

A “mining pool" is a server that distributes the task of calculating the block signature between all connected participants. The contribution of each of them is evaluated using the so-called “shares”, which are potential candidates for receiving a signature. As soon as one of the “shares” hits the target, the pool announces the readiness of the block and distributes the reward.
However, if you participate in the pool, then you will have to share the profit with all the participants in the pool, but for the majority, this usually is the most profitable option.

Which pool is better for mining?

The best mining pools should meet the following criteria:

Key selection criteria

To select a good pool for each specific cryptocurrency, you need to carefully study all the information available about it on its website and on the forums.
To reduce the number of stale shares, it is better to mine on the pool closest to the miner. You can choose the fastest mining pool by studying the information about the processing speed of the share in the mining program or by pinging the time it takes for the signal to pass from the miner's computer to the servers of the pool.

10 most popular and powerful pools: Description

ViaBTC

Coins: BTC, BCH, BSV, LTC, ETH, ETC, ZEC, DASH, XMR, CKB
Commission: 3%, lifetime discount: 1%

EMCD

Coins: BTC, BSV, BCH, LTC, ETC, ETH, DASH
Commission: 0%. There is a donation option: 0.5% of the income

Ethermine

Coins: ETH, ETC, ZEC
Commission: 1%

F2pool

Coins: BTC, LTC, and many other coins
Commission: 3-5%

NanoPool

Coins: XMR, ETH, ETC, SiaCoin, ZEC, PASC, ETN
Commission:1%

Mining Pool Hub

Coins: BTC, BSV, BCH, LTC
Commission: 0.9%

NiceHash

Coins: BTC, ETH, XRP, BCH, LTC, ZEC, DASH, XLM, EOS, USDT, LINK, BAT, ZRX, HOT, OMG, REP, BTG, NEXO, MATIC, ENJ, SNT, ELF, BNT, KNC, POLY, MTL + 20 more.
Commission: 2-5%

Coinotron

Coins: ETH, ETC, PASC, LTC, Zcash, BTG, DASH, FTC, VTC
Commission: 1-1.5%

Monero Mining Pool

Coins: XMR
Commission: 2%

Baikalmine

Coins: ETH, ETC, MOAC, CLO
Commission: 0.5-1%

Independent Pool Statistics

To make sure that the pools work and really exist, check independent sources. These are:
Keep up with the news of the crypto world at CoinJoy.io Follow us on Twitter and Medium. Subscribe to our YouTube channel. Join our Telegram channel. For any inquiries mail us at [[email protected]](mailto:[email protected]).
submitted by CoinjoyAssistant to dogemining [link] [comments]

IQ.cash smart trading and mining

IQ.cash smart trading and mining
https://preview.redd.it/z0xjotzxta451.png?width=724&format=png&auto=webp&s=a0c223a017dd58aa54d506e51d041f5820db4a3b
Everyone from time to time has an interest in entering into a variety of investments with the aim of earning income from their home or comfort as long as they do not have to go through an inefficient employment system. This is the result of technological developments around, and to achieve this, many fall victim to con artists who promise a platform to get a comfortable income. Today I will introduce the ICO IQ cash project, one of the PLATFORM THAT ALLOWS YOU TO GET IN YOUR COMFORT.

What is IQ cash

IQ Cash is a cryptocurrency that may be used to run and increase further exposure to what has been offered. Making it is to remove from where to stop because it has been made and decided to go further because it was not possible. IQ can be used to get a place that has to be part of this trend, even if we are looking for an open place where investors can do the same with other investors. The aim is to give everyone not agreement about most and at least ROI in 300% or more of you in passive form. The IQCash company is truly unique because it will allow users to get the maximum return on investment. IQ cash is a company that will be able to combine the best and most perfect opportunities to lead exchanges in the cryptocurrency market. With IQ network Masternode you can avoid a variety of situations, problems, and unusual problems, and such a process will eliminate any deficiencies. The IQCash platform is also suitable for traders who already have experience in their activities, and of course for novice traders who have just entered the door of buying and selling crypto. No one will experience problems, everyone will only admire sales using IQCash. Learn more — http://iq.cash.

Why I chose to take a position on IQ. Cash?

Because there are many kinds of benefits for investors. except for profits up to 300%, I will be able to introduce all profits to investors. 1. Security Cryptocurrency now has a variant of active users in the world and also the number is growing rapidly! User accounts cannot be blocked, and funds cannot be accessed by anyone but the owner. 2.MASTERNODE Iq. Cash uses the consensus of the PoW algorithm with the support of the Masternode system. This makes the project economically attractive to mine 43% and provides 57% of passive income for Masternode holders. Masternode provides network integrity, transaction anonymity, and transaction speed. ways to get Masternode: You must take the position of 3000 IQ. 3. ANONIMITY The anonymity of transactions in the system is provided by the PrivateSend algorithm. Users can trust the system completely. they don’t need to worry about third-party access to data because the system encrypts data securely when transferring and receiving assets. 4. ASIC RESISTANCE Technology that solves problems accelerates the expansion of network complexity significantly when using ASIC (compared to CPU usage). IQ Cash Network uses the NeoScrypt algorithm to solve this problem. 5. TRANSACTION speed High-speed transactions are guaranteed by InstantSend data exchange across networks. The transaction time is about 5 seconds. 6. IQ Network decentralized. Cash implies weaknesses to create sites that combine the dominant influence on other network members. Effects on coins that are excluded due to their release are prohibited, and extra emission is not provided.

How to get an annual profit of 300%.


https://preview.redd.it/updhrmtzta451.png?width=793&format=png&auto=webp&s=eccc7d14b5d2e479f5d1ed2de84d14bfc72b0742
  1. Buy 3,000 IQ or better 3001 because 1 is spent on commission transactions.
  2. Download the Files application (Android or iOS) for mobile devices Open IQ. Cash Coin Purses in the application.
  3. Enter 3,001 IQ in the wallet and create a MasterNode server and deposit. Pay for hosting service providers on Flits.
  4. You will be charged EUR 1.99 per month, get profit and spend on your needs or create the next MasterNode to extend profits in line with the number of MasterNode!

How do I buy cash IQ

Go to the acquisition page and you will see an open window where you will pay the amount of coins you want to shop for. You don’t need to worry about the next steps because we will arrange the rest by buying IQ coins. Cash and FLS (to close Flits services) from the exchange.
  1. Fill in «IQ wallet address» and «FLS wallet address» in the Flits application.
  2. get a package. One package includes 3000 IQ. Cash and Bitcoin services for Flits for five months. When the cash transfer is complete, open the IQ-MasterNode window and make it comparable to the coins purchased (3000 IQ for 1 MasterNode).
  3. activate MasterNode and get profit. You will follow the current exchange rate on the Flits application or with any crypto trading coins.

Wallets and Exchanges:

The IQ cryptocurrency wallet is available on all three Windows, Mac and Linux platforms.

Token Information:

• Algorithm: PoW, NeoScrypt (ASIC resistance) • Block time: 120 seconds • Prizes per block: 25 IQ • Block Block Reward Distribution: 57% to Masternodes and 43% to Miners, both taken from the formula (Reward-6%), where 6% is reserved for the DAO system • Block rewards can be sliced 12% every year • Max coins: 56 900,000 IQ • Premine: 7 900 000 IQ • Mining within 25 years

Conclusion

IQ.cash has studied the crypto market well enough to draw the model. This uses the mining system and MasterNode. The mining protocol will attract contributors exponentially while MasterNode will help ensure network speed, governance, and sustainability. Because MasterNode is also a cryptocurrency node, becoming a MasterNode on the IQ.cash system requires an investment commitment. This is a way to make a profit in this system. Investment is rewarded with a commission for each trade made by the system. This will help ensure that enough users try to become a MasterNode and thus make a profit without having to leave the comfort of their home.

FOR MORE INFORMATION ABOUT IQ.CASH:

Website: https://iq.cash/ Whitepaper: https://iq.cash/iqcash_whitepaper.pdf Telegram: https://t.me/IQ_cash Twitter: https://twitter.com/IQ_Crypto Bitcointalk: https://bitcointalk.org/index.php?topic=4360591 YouTube: https://www.youtube.com/finexpo Github: https://github.com/IQ-Cash/iqcash/releases Disputes: https://discord.gg/qekuX6r Ann Thread: https://bitcointalk.org/index.php?topic=5240221.0 Explorer: https://explorer.iq.cash Mining Pool: https://pool.iq.cash Bithumb Contest: https://support.bithumb.pro/hc/ru/articles/360046055014--Event-100-000-IQ-Grand-Prize-Pool
Username : faxmon Link : https://bitcointalk.org/index.php?action=profile;u=173709
I.Q cash wallet : QU5m19f7AVY99cMVzU2CYLoAV15FRMxuLY
submitted by kriptaannarhist to u/kriptaannarhist [link] [comments]

New Free Bitcoin Mining Site 2020  Earn 0.0001 BTC Daily Without Any Investment  Saeed Tech New Bitcoin Mining Tools - Inject Unknown Mining Pool . Free Bitcoin Mining Website 2020 Mine 0 088BTC Daily live proof, How to make Bitcoin Generator 2020 Mining Pool injector Best Altcoin mining Pool

I want to setup a pool-server and a client image that gets work from that server. Bitcoin Stack Exchange is a question and answer site for Bitcoin crypto-currency enthusiasts. voting to close this as a duplicate since it appears you're interested in setting up your own mining pool and there is already a question about that topic. Also, The Bitcoin.com mining pool has the lowest share reject rate (0.15%) we've ever seen. Other pools have over 0.30% rejected shares. Furthermore, the Bitcoin.com pool has a super responsive and reliable support team. How to setup own Mining Pool step by step. This is a step by step guide on how to setup your own mining pool for things like GeekCash, Bitcoin, Litecoin and other crypto-currencies.. Slush Pool is the 1st mining pool with more than 1.2M BTC mined since 2010. Explore features such as advanced payouts, monitoring and more. Mining pool minimum payout is 0.1. EquiGems is located in the Europe and you can use it to mine BTCZ,HUSH,KMD,XSG,ZEC,ZCL,BTCP,BUCK,HEPTA,LTZ,SFE,ZEL,ZERC,ZEN . It support the PPLNS payment type(s), and the average fee which is charge by this pool is very low, it is only 0.9% and the fee expanded is 0.9% .

[index] [23034] [15643] [834] [14405] [26038] [19602] [28910] [10041] [1285] [3643]

New Free Bitcoin Mining Site 2020 Earn 0.0001 BTC Daily Without Any Investment Saeed Tech

It is recommended to generate a new Bitcoin Wallet Address everytime you want to receive Bitcoin. If you do not have a Bitcoin wallet, you may create Just With Email From Blockchain Or Coinbase . 2. How to Mine Bitcoin Cash & BTC Complete Mining Tutorial & Setup with Pool Configuration Guide using top industry ASIC from Bitmain. Bitcoin and Bitcoin Cash both mine under the SHA256 algorithm so ... bitcoin pool server mining viabtc pool free bitcoin mining sites ... bitcoin mining pool best payout free bitcoin cash mining t1 miner pi mining new crypto coins altcoin mining s9j miner Another entry in the Crypto Mining Pool Server Vlog. Featuring re-purposed Dell Poweredge R720xd Google Search Appliances. Starwind: https://www.starwindsoftware.com My Rig Parts: Asrock H110 Pro ... Dash itself is a Bitcoin free mining pool cpu mine dash fork free bitcoin website ... free crypto mining apps - cryptocurrency for beginners bitcoin & more (2020) pi network ios android. free btc ...

Flag Counter