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Aeon

Aeon (AEON) is a private, secure, untraceable currency. You are your bank, you control your funds, and nobody can trace your transfers.
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MiningPoolHub

This sub is strictly focused on mining on the MiningPoolHub service.
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ZenSys Archive (Use /r/Horizen!)

Please use our new /Horizen Subreddit ZenCash is a private, decentralized, and reliable platform for communications, transactions, and publishing. In production using zero-knowledge proofs for anonymous transactions with an encrypted memo field stored on the ZenCash blockchain.
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How to Setup a Bitcoin Miner

How to Setup a Bitcoin Miner submitted by domsteil to Bitcoin [link] [comments]

Zeusminer Thunder X6 problems.

I picked up a Zeusminer Thunder X6 for cheap on eBay, actually didn't expect to win the auction. I've setup ASIC Bitcoin miners before, even modded them. But this damn thing refuses to work for me. I'm using a 600W Corsair power supply to give it juice, and I've compiled up the official Zeusminer cgminer git branch which just crashed out without giving any debug messages. The official bfgminer 5.4.2 seems to communicate with the hardware but fails the nonce checks. If I disable the nonce checks it appears to start up and shows hashing but no work units are completed. Debug output keeps saying that the nonce check fails and it discards the work. I've tried two different computers, Linux and Windows with the same result. I've even started compiling up and testing some of the more obscure bfgminer and cgminer branches. I've tried cgminer-DMAXL and bfgminer-Darkwinde with the same results as the official bfgminer branch. I've even tried pulling the single blades out and powering them from a bench power supply to see if perhaps one had hardware issues. When I'm running a single blade from the bench power supply, it pulls around 500mA @ 12V when idle. When I first start the software and it tries talking to the hardware, it pulls ~3A for a few seconds then goes back to ~500mA. Any help would be greatly appreciated. Thanks!
submitted by bhodabs to dogemining [link] [comments]

Zeusminer Thunder X6 failing nonce check.

I picked up a Zeusminer Thunder X6 for cheap on eBay, actually didn't expect to win the auction. I've setup ASIC Bitcoin miners before, even modded them. But this damn thing refuses to work for me. I'm using a 600W Corsair power supply to give it juice, and I've compiled up the official Zeusminer cgminer git branch which just crashed out without giving any debug messages. The official bfgminer 5.4.2 seems to communicate with the hardware but fails the nonce checks. If I disable the nonce checks it appears to start up and shows hashing but no work units are completed. Debug output keeps saying that the nonce check fails and it discards the work. I've tried two different computers, Linux and Windows with the same result. I've even started compiling up and testing some of the more obscure bfgminer and cgminer branches. I've tried cgminer-DMAXL and bfgminer-Darkwinde with the same results as the official bfgminer branch. I've even tried pulling the single blades out and powering them from a bench power supply to see if perhaps one had hardware issues. When I'm running a single blade from the bench power supply, it pulls around 500mA @ 12V when idle. When I first start the software and it tries talking to the hardware, it pulls ~3A for a few seconds then goes back to ~500mA. Any help would be greatly appreciated. Thanks!
submitted by bhodabs to litecoinmining [link] [comments]

Another Bitcoin mining software that we just tested is called the Cudo Miner. While still in beta, it’s really easy to setup and configure, and all you need is a PC and an email address. What’s most beautiful about this app is that it comes for Windows, Linux and Mac, and we all know how hard ⬇️⬇️

Another Bitcoin mining software that we just tested is called the Cudo Miner. While still in beta, it’s really easy to setup and configure, and all you need is a PC and an email address. What’s most beautiful about this app is that it comes for Windows, Linux and Mac, and we all know how hard ⬇️⬇️ submitted by crypto5800 to u/crypto5800 [link] [comments]

A bitcoin miner is growing 'Cryptomatoes' using excess heat from his mining setup

A bitcoin miner is growing 'Cryptomatoes' using excess heat from his mining setup submitted by crimsontank14 to btc [link] [comments]

Antminer cooler in a box - Antminer s9 bitcoin miner cooler box - DIY Antminer Silencer - Step by step antminer cooler setup

Antminer cooler in a box - Antminer s9 bitcoin miner cooler box - DIY Antminer Silencer - Step by step antminer cooler setup submitted by earringstud to Bitcoin [link] [comments]

A bitcoin miner is growing 'Cryptomatoes' using excess heat from his mining setup

A bitcoin miner is growing 'Cryptomatoes' using excess heat from his mining setup submitted by HiIAMCaptainObvious to BitcoinAll [link] [comments]

Antminer cooler in a box - Antminer s9 bitcoin miner cooler box - DIY Antminer Silencer - Step by step antminer cooler setup

Antminer cooler in a box - Antminer s9 bitcoin miner cooler box - DIY Antminer Silencer - Step by step antminer cooler setup submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Need a NVIDIA bitcoin miner for my multi GPU setup. NiceHash is gone and I have a 4 GPU's just waiting to heat up my home. /r/BitcoinBeginners

Need a NVIDIA bitcoin miner for my multi GPU setup. NiceHash is gone and I have a 4 GPU's just waiting to heat up my home. /BitcoinBeginners submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Antminer cooler in a box - Antminer s9 bitcoin miner cooler box - DIY Antminer Silencer - Step by step antminer cooler setup

submitted by BitcoinAllBot to BitcoinAllTV [link] [comments]

Need a NVIDIA bitcoin miner for my multi GPU setup. NiceHash is gone and I have a 4 GPU's just waiting to heat up my home.

I have tried ccminer 8.0 and finally got one gpu miner running but can't get the others to run. I am looking to build or compile my own with equihash , something like niceminer had, so I can join a pool. Any suggestions I will do the research and see what I can do. I program and can build on linux or windows , so just need a miner with source code that I can modify algo's and I can run with it.
submitted by ruskeeblue to BitcoinBeginners [link] [comments]

How to setup a command line bitcoin miner to use slushpool?

I've tried using CGminer but have had problems. I'm open to suggestions for which miner to use. I am using Windows 10 with an Nvidia 1070 GPU. I am using the Electrum wallet.
Apologies if this is not the right subreddit for technical support, if it is not could you please direct me to somewhere more suitable?
submitted by 0amethyst to CryptoCurrency [link] [comments]

Zcash / ZEC (Different from Zcoin) • I will help you setup up your miner or rig on windows only platform for a fee of Bitcoin

submitted by btcforumbot to BtcForum [link] [comments]

Can you setup a miner to process your own transactions? /r/Bitcoin

Can you setup a miner to process your own transactions? /Bitcoin submitted by BitcoinAllBot to BitcoinAll [link] [comments]

Is it worth spending the money on a Raspberry Pi bitcoin miner setup?

So I am looking into start mining for myself, i have seen that the raspberry pi rigs are not to expensive si can anyone tell me how well they run once you have gotten it started or is there a better option out there?
submitted by lilblake7005 to BitcoinMining [link] [comments]

Bitcoin miners of Reddit could you please recommend a beginners mining grid setup :P

I am a 15 year old boy and for the past 3 months i have been saving my money so that i can be able to afford a mining rig.So far i have only been able to get £150, does anyone know if are there any mining rig setups within that price range?
If i don't have enough money please recommend how much i need to get a simple mining rig, can you please also tell me the right components and tell me any websites i can buy them off:)
submitted by capitan_planet_ to Bitcoin [link] [comments]

How to Setup a Raspberry Pi Bitcoin miner

How to Setup a Raspberry Pi Bitcoin miner submitted by johandr to Bitcoin [link] [comments]

A brief Bitcoin miner setup Tutorial (x-post from /r/BitcoinMining)

A brief Bitcoin miner setup Tutorial (x-post from /BitcoinMining) submitted by warproxxx to Bitcoin [link] [comments]

If you need help or you're New to roms and emulation these are some tips

First thing first You need an Emulator i suggest RetroArch is a Newbie Friendly good all in one emulator this is a video to how to setup and use ReTrOaRcH
OpenEmu FOR MAC USERS THAT WILL NOT USE RETRO ARCH BECAUSE IT'S NOT ENOUGH LOOKING LIKE MAC UI OR THEY HAVE AN OCD OR something like that it's good anyways ( i didn't use it bc i'm not a mac user )
🕿︎♋︎◻︎◻︎●︎♏︎ ◻︎❒︎□︎♎︎◆︎♍︎⧫︎⬧︎ ♋︎❒︎♏︎ □︎❖︎♏︎❒︎◻︎❒︎♓︎♍︎♏︎♎︎✆︎
and a download Manger
Jdownloader ( download the jar version ) A photo to explain what to download (don't download the .exe version it has an adware in it )
or idm u can trial reset with this
a torrent clients (credits to Piracy wiki)
for mobile ( torrent clients ) [credits to Piracy wiki]
stay away from [credits to Piracy wiki]
second you need sources to download roms these are the best sites + some tips
sites :
ziperto
No intro romset ( you can download it directly without a torrent you CAN FROM HERE ) (If you don't want to download the whole romset for the system press view content )
AlvRo's Collection
Vimm's Lair
The Eye
GamesTorrents ( of course if u can torrent )
MEGA-ROM
N(itro)blog
THE MEGATHREAD
RomsUniverse
MOBAsuite
IDK?? A WIKI FOR ROMpacks?????
The Old Megathread idk why u need it
A guy who uploaded some roms but he didn't get attention
ROMstorge ( idk how to use this site )
Roms WIKI
Another ROMs site
Edgeemu
EmulatorGames ( the name is baaaaaaaad )
ROMsDownload
WoW Roms
cdROMance
Startgame ( wtf is this name )
Retrostic
ROMulation
If u Want to Check if the site is safe go to here and comment ur site url
Tips :
Tip #1 : If you're in a country that hate piracy like USA or Germany ( i think Germany have dmca or something ?? idk ) etc. stay away from torrent and stay away from http sites
( download Https Everywhere extension and enable encrypt all sites eligible option by pressing on the icon of https everywhere ) even if your browser included with it . because it will warn you if the site is http...
Tip #2 : FBI will not raid your house ( because fbi will not waste there time on you )
Tip #3 : https is your best friend because it's encrypted that means if you go to a https roms site
your isp will see (random numbers and letters) .com/.net/.org/.to/.site etc.
Tip #4 : install an adblock i suggest Ublock Origin
Tip #5 : install a pop-up blocker if you have a chromium based browser like Brave, Chrome, New Edge etc. i suggest this ( if you know a better one please give me the link ) poperblocker
Tip #6 The MegaThread is your OTHER BEST FRIEND if you want an rom head to the megathread and press ctrl + F and search ;)
Tip #7 DON'T DO NOT OPEN ANY ANY ANY .MSI .EXE/.DMG/.DEB or ANY OTHER FILE THAT you CAN OPEN WITHOUT AN EMULATOR THE FILE IT'S 2000% A VIRUS ( EXCEPT WHEN you DOWNLOAD RETRO ARCH [ or any other emulator OF COURSE ] ) AND DON'T OPEN .BAT FILES IT CAN DELETE SYSTEM32 FILE AND IT'S ONE OF THE MOST IMPORTANT FILES IN WINDOWS
Tip #8 Emulating is Legal but Downloading ROMs is ILEGAL ( OF COURSE IF you're LIVING IN A COUNTRY THAT DMCA IS A HOLY THING ) ;-)
Tip #9 If you're suspicious of a file u can scan it on VirusTotal or Hybird Analysis ( you need to upload the file because it will open it on a vm in there sever ).
Tip #10 I recommend using a controller if you have a xbox controller just connect it to your pc and you're good to go BUT if you have a dualshock controller (ps controller )
use DS4 Windows ( if you have a windows pc ) ( I Know it's the fork bc the og creator stopped working on it in 2016 or somthing like that )
or any other controller .
Tip #11 If you download a rom and it came in .rar .zip .7z .r001( if the rom came with multiple files like .r001 .r002 .r003... you need to extract just a one file) etc. you can use 7-ZIP or Winrar ( don't worry 40 days trial doesn't end ).

Tip #12 if the rom came in this order rom.rar.exe don't think to open it and if you hide the extension file from showing from the file name it will show like rom.rar but it's actually a .exe or .dmg etc.

Tip #13 if you have a linux pc or a mac that doesn't mean you will not get infected even Temple OS have malwares ( if you don't what's a malware is just search )​.
Tip #14 if u tired of link shorters and etc. use universal Bypass
Tip #15 Some good emulators :
Dolphin a wii and gamecube emulator ( check the compatibility list to check if the game work )
Citra 3DS emulator ( check the compatibility list to check if the game work )
BSNES HD beta if u want to play snes games on HD
PCSX2 the best ps2 emulator
EPSXE a little bit old but it's good (ps1)
DON'T use zsnes ( i guy on the comments said that )
RPCS3 PS3 ( check the compatibility list to check if the game work )
Xenia Xbox 360 ( check the compatibility list to check if the game work )
Cemu WiiU Emulator ( check the compatibility list to check if the game work )
a Decryptor for 3ds games if citra won't open the rom HERE
DS DeSmuME (OLD) ( if u have a good ds emulator give me the link pls )
Project64 N64
DOSBox DOS emulator ( check the compatibility list to check if the game work )
IF U HAVE any other emulator pls link it in the comments <3
Tip #16
Romsmania
CoolRoms
etc. are NOT SAFE
if you have any other tips share it =)
submitted by real_nyha454 to Roms [link] [comments]

Got tired of having to occasionally manually update ElvUI and didn't feel like using their client, so I wrote my own (kinda)!

oh god I didn't know what flair to use so I hope Tech Support's okay

Windows Release: https://github.com/VladiMatt/ElvUI-Downloadereleases/tag/v1

Source code (.py) available here: https://github.com/VladiMatt/ElvUI-Downloader

(please don't laugh at my spaghetti I know it's ugly but it works and my friend who works at Oracle says that means it's good enough to ship)

No Mac or Linux support for the moment. Might maybe look into supporting them at some point if anybody really wants it, but I don't have a machine running either OS so I wouldn't be able to test it myself.
Over the past few days I taught myself Python by slapping together a downloader for ElvUI that automates the entire download/installation process. I spent more time making this than I will ever save from not having to download/install it manually anymore, so I decided to open-source it and post it here so others can maybe benefit from the time that I wasted!

Features:

So long as the TukUI team doesn't change the download page, or change the naming convention for either file, or send me a cease and desist, this should continue to work forever!
If I continue to update this I'd like to add a GUI of some sort so it at least looks nice. Perhaps with faction themed skins for you to look at for the 6 seconds the program's open.
Lastly, as stated at the top of the post, I don't have the means to really add proper Mac/Linux support for the moment as I can't easily test any changes, but if someone wants to fork this and add it themselves then go for it!
EDIT: 10 hours after posting I remembered to set the repo to public. My brain is nice and smooth today. Anyway in the comments some other (better) programs have been shared so you should probably use those instead but I'm still proud of my garbage so I'm keeping the post up.
submitted by TGHMatt to wow [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!!

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Discussions About Taproot Activation

submitted by almkglor to Bitcoin [link] [comments]

How does bitcoin scale in performance? (CPU and RAM usage, usually ppl talk about disk space)

I am currently reading "Mastering Bitcoin" and I learned a lot of news things. But a questions keeps bugging me:
If bitcoin grows around 1 terabyte each decade (i know, this is not yet the case), that is completely fine. But the fullnodes store the whole history and validate against the whole past, right? Also wallets, that "restore from a private key" (you setup a new wallet with an old private key, so it has to check the full bitcoin history for your funds).
Won't those be extremely slow mechanisms in the future? What is bearable now, will it be super cpu-intensive in several years? The mempool takes unconfirmed transactions, but in the end, it only "accepts" them, if they are valid. So the node has to validate all of them right? The longer the chain, the longer that takes, right? (not sure if a node really validates all of them, or if he just validates the block that a miner delivers. I read conflicting information on this topic or misinterpreted one.)
Disclaimer: I could be wrong on some things, please go easy on me. :)
submitted by TrudleR to Bitcoin [link] [comments]

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I Built a Crypto Mining Farm in My Garage How To Setup a ...

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