How to generate BASE58 (P2SH) Addresses using python or other methods
Hello and thank you for your help. I need to generate a reasonable amount of bitcoin BASE58(P2SH) Addresses (starts with '3') and their private keys using python, or also with other methods you know, i just need to generate them. I've tried a lot of methods also found here but didn't work. (problems like i've genereted the addresses but the private key doesn't work). I'll apprecciate your help. Best Regards.
As per usual the 3 months has been all hand-on-deck, helping to bring further adoption utilities to Groestlcoin. The markets have been red but as always that doesn't stop the show from going on with regards to the development since the last release update on 24th September. Here's a recap of what has happened so far:
Groestlcoin was added to Changelly. One of the leading Crypto-to-Crypto exchanges that offer some of the best rates on the market – You can also buy with a debit/credit card too and you can buy/sell Groestlcoin directly from your Coinomi wallet, from the website https://groestlcoin.org#exchanges, and you can enable Changelly swaps on your GRSPay stores!
Groestlcoin was added to the JAXX Liberty wallet! One of the leading multi-crypto wallets in the stores. Safely store your GRS on Android, iOS, Mac OS X, Windows, Linux or Google Chrome. With Jaxx Liberty you are always in control of your private keys, and you can use your wallet on multiple devices. Note: This directly replaces the deprecated JS Wallet which was of a similar (but older) codebase.
Groestlcoin was integrated into AtomicPay – A decentralised cryptocurrency payment processor that eliminates the involvement of a third-party gateway, allowing merchants to accept payments directly from their customers, with over 2500 merchants already signed up, a public release is set for Mid-January 2019.
Huobi officially opened trading for Groestlcoin to Korean customers! And in addition, a giveaway of up to 10,000 GRS was held!
Unocoin ATMs started supporting Groestlcoin at their ATMs, granting the Indian community the ability to withdraw (For INR) and deposit Groestlcoin into their UnoDax account. Groestlcoin $GRS is available on #Unodax exchange with the following pairs: $INR, $TUSD, $BTC.
Groestlcoin was listed on SWFT BLOCKCHAIN, giving you more opportunities to swap your other altcoins with Groestlcoin or vice versa, quickly and securely.
Groestlcoin was added to One Page Exchange! Where you can buy and sell Groestlcoin quickly and easily without any form of registration!
CryptoWolf started accepting VISA, Mastercard and Maesto to buy cryptocurrencies from the CryptoWolf exchange in EUR or USD! Providing a new FIAT gateway to buy Groestlcoin.
Groestlcoin has been added to CoinZark (Formally VertPig) for fast and efficient Crypto-to-Crypto swaps at very competitive rates using exchange aggregates.
Groestlcoin was added to PungoWallet! Pungo wallet is built to showcase the features that anyone can achieve with blockchain technology. They have built a set of modular solutions that allow any company to build a blockchain layer to interact with traditional software.
Groestlcoin was added to StealthEX, offering anonymous cryptocurrency swaps with tens of other coins without disclosing any personal information. Just choose the pairs, enter your address, send your coins and receive your funds!
Groestlcoin joined InvestFeed, granting a company listing and blue verified badge.
Groestlcoin was officially added to Blockfolio Signals – For those of you that use Blockfolio, you can keep updated with all the latest news straight from the app, via the Signals icon.
Groestlcoin has been added to DeltaDirect – Those using Delta can now stay up-to-date with the latest Groestlcoin news, straight from your Delta portfolio tracker app.
Groestlcoin has been added to CoinGecko Beam – Where you can easily follow us and receive updates without searching through social media.
Groestlcoin is now live on BitUniverse Link! All of the latest Groestlcoin updates and news will be directly available on BItUniverse.
Groestlcoin was added to NovaExchange! Launched in 2016 and operating from Sweden, users can trade over 300 different digital assets.
As of the latest version of the Trezor Model T firmware, Groestlcoin is now officially supported! The Trezor Model T is the next-generation cryptocurrency hardware wallet, designed to be your universal vault for all of your digital assets. Store and encrypt your coins, passwords and other digital keys with confidence. The Trezor Model T now supports over 500 cryptocurrencies.
Blockbook MainNet & TestNet Block Explorer
Blockbook is an open-source Groestlcoin blockchain explorer with complete REST and websocket APIs that can be used for writing web wallets and other apps that need more advanced blockchain queries than provided by groestlcoind RPC. Blockbook REST API provides you with a convenient, powerful and simple way to read data from the groestlcoin network and with it, build your own services.
Support to broadcast transactions online. Broadcast a raw transaction in hex format over the Groestlcoin network.
Supports every web browser
API – Complete REST and Websocket API for querying blocks, transactions and addresses; and receiving live updates
Light – Thin data model using groestlcoind RPC interface to validate blockchain information. Fast groestlcoind blockchain synchronisation (~1hrs for the entire mainnet), using RocksDB for data storage and optionally raw groestlcoind data files processing.
Exhaustive – Reports on double spend attempts, outpoint confirmations, outputs spend status reports. Input and Output hyperlinks in transactions. Extended view in transactions to show advanced details.
Open Source, written in the Go programming language.
Groestlcoin has been added to the Edge wallet for Android and iOS. Edge wallet is secure, private and intuitive. By including support for ShapeShift, Simplex and Changelly, Edge allows you to seamlessly shift between digital currencies, anywhere with an internet connection.
Multi-Asset Support. Supporting Bitcoin, Ethereum, Groestlcoin and many others, you can safely hold your coins.
Exchange Support – Supporting Shapeshift, Simplex and Changelly enables the user to seamlessly shift between digital currencies as if you were storing your funds on an exchange.
In-app buying and selling, exchange your FIAT for cryptocurrency directly within the app.
Encrypted with a username and password. Seamless login into multiple devices.
Easy, secure access with PIN or fingerprint. Additionally, supporting 2FA authentication.
Client-side encryption – All of your data is encrypted on your device before any of your information touches the Edge servers. Being free from server-side hacks and malware means that your assets are as secure as they can be.
We are excited to announce that Groestlcoin has been added to CoinID! With integrated cold and hot wallet support, and a host of other unique wallet features, CoinID can easily become your go-to wallet for storing Groestlcoin. More details can be found here: https://coinid.org/s/groestlcoin-wallet-overview.pdf
Integrated Cold wallet. Store your funds offline and sleep tight at night. All you need is a separate Android or iOS device.
Transaction Batching – A feature normally reserved for exchanges, CoinID supports transaction batching, allowing the user to group transactions into one, saving space on the blockchain and lowering your transaction fees considerably as a result.
Complete control – Your private keys never leaves your device. "If you don’t control your private keys, you don’t own your coins".
SegWit support – Support for Segregated Witness, which means smaller transaction sizes, lower fees, and supporting all 3 address types (grs1, 3, F).
Hierarchical Deterministic – Use a single set of keys for multiple coins and addresses. When an address is used, a new one is generated.
Cross-Platform – Built with React Native for rapid development cycles and cross-platform support.
The Groestlcoin BIP39 tool is an open-source web tool for converting BIP39 mnemonic codes to addresses and private keys. This enables the greatest security against third-party wallets potentially disappearing – You’ll still have access to your funds thanks to this tool. What’s New
Added Coinomi, Ledger Client, Groestlcoinomi, Trezor, Safe T, Core, Groestlpay and Samourai to BIP32 Tab
Added BIP49 support
Add BIP38 support
Add CSV tab for derived addresses
BIP84 tab for derivation path
Display version number in top right corner
Groestlcoin ticker is now also displayed
Refactor method to clear old data from the display
BIP44 ‘purpose’ and ‘coin’ fields have been made read only
Tab Order is now alphabetical
Improve showing feedback for pending calculations
Show error when using XPUB with hardened addresses
Rename variables for clarity between BIP49 and P2WPKH Nested in P2SH
QR Codes use correctLevel 3 instead of 2
Update compile script to work across python 2 and 3
Add BIP49 to More Info section
Reword entropy text to indicate using a single source only
Detect and warn when entropy is filtered / discarded
Use new xpub/xprv prefixes for Segwit BIP49
Allow more rows to be generated starting from a custom index
BIP141 tab added for full Segwit compatibility
Show list of word indexes. Checksum shows in entropy details
Populate entropy field with hex value used from PRNG
QR codes with accents now work correctly by replacing jquery.qrcode with kjua
Allow initial number of rows to be set by the user
Raw entropy shows groupings with space every 11 bits for easier usage
Warn that entropy values should exclude checksum
Warn when generating low entropy mnemonics
Warn when overriding weak entropy with a strong mnemonic length
Allow XPUB to be used as root key for Segwit derivations
Add visual privacy safeguard. List alternative tools
Update bootstrap from 3.2.0 to 3.3.7 and jQuery from 2.1.1 to 3.2.1
GroestlcoinJS library upgraded to v3.3.2
General code refactoring, numerous performance improvements and bug fixes
Electrum-GRS is a lightweight "thin client" Groestlcoin wallet Windows, MacOS and Linux based on a client-server protocol. Its main advantages over the original Groestlcoin client include support for multi-signature wallets and not requiring the download of the entire block chain. What’s New
HARDWARE WALLET SUPPORT: Archos Safe-T Mini is now fully supported
Electrum + Android Version 3.2.3:
If a BIP39 seed extension/passphrase contained multiple consecutive whitespaces or leading/trailing whitespaces, then the derived addresses were not following spec. This has been fixed, and anyone affected should move their codes. The wizard will show a warning in this case.
The PRNG used has been changed
Fix Linux distributable, ‘typing’ was not bundled and was required for Python 3.4
Fix spending from Segwit multi-sig wallets involving a Trezor co-signer when using a custom derivation path.
Several other minor bugfixes and usability improvements.
ivendPay and Groestlcoin cryptocurrency have announced the start of integration. IT company ivendPay, the developer of a universal multicurrency payment module for automatic and retail trade, intends to integrate Groestlcoin cryptocurrency — one of the oldest and the most reputable Bitcoin forks into the payment system. Groestlcoin is characterized by instant transactions with almost zero commission and is optimal for mass retail trade where micropayments are mostly used. According to Sergey Danilov, founder and CEO of ivendPay, Groestlcoin will become the 11th cryptocurrency integrated into the payment module. The first working vending machines for the sale of coffee, snacks and souvenirs, equipped with ivendPay modules, served the visitors of the CryptoEvent RIW exhibition at VDNKh in Moscow and accepted Bitcoin, Go Byte, Dash, Bitcoin Cash, Ethereum, Ethereum Classic, Zcash, Bitcoin Gold, Dogecoin and Emercoin. ivendPay terminals are designed and patented to accept payments in electronic money, cryptocurrencies and cash when connecting the corresponding cash terminal. Payment for the purchase takes a few seconds, the choice of the payment currency occurs at the time of placing the order on the screen, the payment is made by QR-code through the cryptocurrency wallet on the smartphone. The interest in equipping vending machines with ivendPay terminals has already been shown by the companies of Malaysia and Israel, where first test networks would be installed. ivendPay compiles a waiting list for vending networks interested in buying terminals and searches for an investor to launch industrial production. According to Sergey Danilov, the universal payment terminal ivendPay for the vending machine will cost about $500. The founder of ivendPay has welcomed the appearance of Groestlcoin among integrated cryptocurrencies, as it is another step towards the realization of the basic idea of digital money - free and cross-border access to goods and services for everybody.
Hello everyone - For fun, I have written a fairly compact python tool for generating public NEO addresses that contain the substring you'd like. It is inspired but not based on the C# version from mgao6767. You can just fork or clone this repo: https://github.com/wy/neo-python-vanity-address And then you'll need to install bitcoin, and base58 libraries. Then you are good to go! I have tested it and it should run faster than the C# version due to the fact that it uses fewer libraries. Donations welcome: NEO/GAS: ANuXwingjkoCcVifXBePVkkBg2zARB7mKN
Hey Bitcoiners, here are my short Python 3 scripts to generate a Bitcoin address.
A few months back I wrote some Python 3 scripts to generate Bitcoin addresses. They work just like Brainwallet does, and in fact are 100% comaptible with brainwallet -- you can copy the private key into brainwallet and expect everything to work. I use these personally instead of brainwallet so that I don't even need to open a browser in order to generate some addresses. It now occurs to me that perhaps some of you would find a use for them, too. I have two versions: the first one uses the OpenSSL's random number generator to generate addresses. That means it's unlikely to ever generate the same address twice. The second version hooks into the RNG and always returns the same bytes given a specified seed. That means it behaves similar to "Passphrase" option. It'll generate the same address given the same seed. Version 1 Version 2 Simple Base58 implementation If someone can speak on the randomness of version 2, that'd be great. Also, I haven't tested these on Windows. If there's any interest in having a script that builds transactions, let me know.
Cold Wallet Generator updated with BIP 0038 encryption
I've updated my Cold Wallet Generator utility to create BIP 0038-encrypted cold-storage addresses. Using BIP-0038 encryption means that you can feel better about the safety of printed copies of your private keys. If someone finds your keys, they'll need to know the passphrase before spending the funds. Of course, if you lose the passphrase and don't have unencrypted copies of the private keys saved somewhere else, you'll be locked out, too. If you're following the BIP 0038 cracking challenge, you'll know that brute-forcing even a short scrypt-based key is very difficult. Why would you use this over bitaddress.org, which also offers BIP 0038? They both do the same thing, and the paper wallets from bitaddress are gorgeous. But this one doesn't require a web browser, you get to supply your own source of entropy, and because it relies on as many external libraries as possible (base58, scrypt, ecdsa, Crypto), it's significantly easier to inspect the source code for bugs or backdoors. This assumes, of course, that you trust your Python installation and the maintainers of the libraries. Give it a try. Feedback appreciated. https://github.com/sowbug/cold-wallet-generator
I should crack the privatekey WIF the following data: ***(uncompressed) Public Key 04 b187b254eed8d.... *** message hash and its signature h1: 9788fd... r1: efc4 s1: 618ce ***another message hash and its signature h2: 7adb9... r2: efc4f.... s2: d8e7c8.... The following is the python code:
#! python2 """encode/decode base58 in the same way that Bitcoin does""" __b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz' __ b58base = len(__b58chars) def b58encode(v): """ encode v, which is a string of bytes, to base58. """ long_value = 0L for (i, c) in enumerate(v[::-1]): long_value += ord(c) << (8*i) # 2x speedup vs. exponentiation result = '' while long_value >= __b58base: div, mod = divmod(long_value, __b58base) result = __b58chars[mod] + result long_value = div result = __b58chars[long_value] + result # Bitcoin does a little leading-zero-compression: # leading 0-bytes in the input become leading-1s nPad = 0 for c in v: if c == '\0': nPad += 1 else: break return (__b58chars*nPad) + result def b58decode(v, length): """ decode v into a string of len bytes """ long_value = 0L for (i, c) in enumerate(v[::-1]): long_value += __b58chars.find(c) * (__b58base**i) result = '' while long_value >= 256: div, mod = divmod(long_value, 256) result = chr(mod) + result long_value = div result = chr(long_value) + result nPad = 0 for c in v: if c == __b58chars: nPad += 1 else: break result = chr(0)*nPad + result if length is not None and len(result) != length: return None return result import hashlib # https://en.bitcoin.it/wiki/Wallet_import_format print; print "****** Private key to WIF ******" print; print "***  Private Key:" PrivateKey = 0xC28FCA386C7A227600B2FE50B7CAE11EC86D3BF1FBE471BE89827E19D72AA1DL print hex(PrivateKey)[2:-1].zfill(64) print; print "***  Extended Key:" extKey = ('80' + hex(PrivateKey)[2:-1].zfill(64)).decode('hex') print extKey.encode('hex') print; print "***  SHA-256 hashing of the Extended Key:" h1 = hashlib.sha256(extKey).digest() print h1.encode('hex') print; print "***  SHA-256 hashing of the SHA-256:" h2 = hashlib.sha256(h1).digest() print h2.encode('hex') print; print "***  First 4 bytes of the second SHA-256 hash used as address checksum:" print h2[0:4].encode('hex') print; print "***  checksum added at the end of extended key:" addr = extKey + h2[0:4] print addr.encode('hex') print; print "***  Base58 encoding" wif = b58encode(addr) print wif print; print "****** WIF to private key ******" print; print "***  Base58 WIF" print wif print; print "***  Base58 decoding" addr = b58decode(wif, 37) print addr.encode('hex') print; print "***  Extended key (checksum verified)" extKey = addr[0:-4] checksum = addr[-4:] verified = hashlib.sha256(hashlib.sha256(extKey).digest()).digest()[0:4]==checksum print extKey.encode('hex') + " (" + ("true" if verified else "false") + ")" print; print "***  Private key" print extKey[1:].encode('hex')
[BOUNTY] Create function to base58 representation of an integer in wolfram (base58check encoding)
I offer for this task a .025 BTC bounty (or about $20)
It was made just for bitcoin...similar to base 64, but well, base 58. Here is the chart for the encoding: https://en.bitcoin.it/wiki/Base58Check_encoding#Base58_symbol_chart it's actually a really neat encoding because it doesn't have problems with capital i versus small L or zero and "o" or O...etc. It would hopefully work similar to the native function IntegerString[int, base] which takes an integer and returns an encoded string in a given base e.g. IntegerString[2^256 - 2^32 - 977, 36] returns 6dp5qcb22im238nr3wvp0ic7q99w035jmy2iw7i6n43b46fqy7 But the maximum base is 36 :-( There is a well known python function and a pseudocode version given on this page, but I'm not sure the best way to do this in wolfram language. Wolfram is so flexible I'd like to see the neat ways to do integer math some of you more experienced fellows could show off. EDIT: also note it would be handy to have it, in the style of wolfram which I love so much, take a second argument for zero padding: e.g. IntegerString[2^256 - 2^32 - 977, 36, 100] returns 000000000000000000000000000000000000000000000000006dp5qcb22im238nr3wvp0ic7q99w035jmy2iw7i6n43b46fqy7 I expected the argument -100 to put the zeros in front but to my surprise that didn't happen.
A self-contained python code to create bitcoin addresses (public and private keys, signatures)
Hello, I recently completed an old python class to create bitcoin address. It makes the computation on the bitcoin elliptic curve, manage private keys in integer and in base58, make the transformation to the public key and to the bitcoin address. It can also sign and verify messages. The verification function uses the trick that you don't need the public key to verify a message but just the bitcoin address. This code is still experimental, but I think it's worth sharing. You can see the code here : https://github.com/HurlSly/Python/blob/masteBitcoinECC.py Hope this can be of interest for someone.
[WTS] ~ 3Million private keys for 1 million satoshis [randomly generated]
Here is the link. They also come with a mechanism (script) to derive the public key and check the balance. I don't expect you to find satoshi's keys or anything...but do feel free to pay me the $6 (1 millions satoshis) for this if you're interested in learning a little bit about the bitcoin protocol... to use the script and file:
Fill in email smtp server information (the script sends an email using Smtp..you need a username, hostname, and host password - gmail account works fine for this but you need to generate an app password)
Rename the file OR just add a .txt to the file sold on satoshibox (its about 250MB) [I forgot to, sorry]
On mac/linux, set file permissions to executable chmod +x so it can be used.
Run the file with python addressFileChecking.py
shipping: intergalactic (as long as there is an internet connection, you're golden) Here is an image of some free keys that are part of a smaller set of 72K keys (proof that I have capabilities for you) Moar keys you ask??? Less??????? shoot me a pm and I'll sell you whatever number you wish at a rate of 3 keys per satoshi ;)
Base58 symbol chart. The Base58 symbol chart used in Bitcoin is specific to the Bitcoin project and is not intended to be the same as any other Base58 implementation used outside the context of Bitcoin (the characters excluded are: 0, O, I, and l). For most of its history, Bitcoin has relied on base58 addresses with a truncated double-SHA256 checksum. They were part of the original software and their scope was extended in BIP13 for Pay-to-script-hash . However, both the character set and the checksum algorithm have limitations: Coinbase is a secure platform that makes it easy to buy, sell, and store cryptocurrency like Bitcoin, Ethereum, and more. Based in the USA, Coinbase is available in over 30 countries worldwide. Base58 is a binary-to-text encoding created by Satoshi Nakamoto for Bitcoin addresses. Base58 is a more human-friendly encoding than Base64 because some similar characters are omitted to avoid confusion when printed. What are the characters used in Base58 encoding? The characters used in Base58 encoding are as the following. Base58 algorithm is a group of binary-to-text encoding schemes used to represent large integers as alphanumeric text. Base58 is widely used in Bitcoin, blockchain and cryptocurrency community. Take a look how to decode and encode Base58.
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