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Ethereum Address Generator Python

Kraken | Buy, Sell And Margin Trade Bitcoin (btc) And Ethereum (eth) - Api

Kraken | Buy, Sell And Margin Trade Bitcoin (btc) And Ethereum (eth) - Api

NOTE: All API URLs should use the domain api.kraken.com. Public methods can use either GET or POST. Private methods must use POST and be set up as follows: API-Key = API keyAPI-Sign = Message signature using HMAC-SHA512 of (URI path + SHA256(nonce + POST data)) and base64 decoded secret API key nonce = always increasing unsigned 64 bit integerotp = two-factor password (if two-factor enabled, otherwise not required) Note: There is no way to reset the nonce to a lower value so be sure to use a nonce generation method that won't generatenumbers less than the previous nonce. A persistent counter or the current time in hundredths of a second precision or higher is suggested.Too many requests with nonces below the last valid nonce (EAPI:Invalid nonce) can result in temporary bans. Note: Sometimes requests can arrive out of order or NTP can cause your clock to rewind, resulting in nonce issues. If you encounter this issue, you can change the nonce window in your account API settings page. The amount to set it to depends upon how you increment the nonce. Depending on your connectivity, a setting that would accomodate 3-15 seconds of network issues is suggested. API calls that require currency assets can be referenced using their ISO4217-A3 names in the case of ISO registered names, their 3 letter commonly used names in the case of unregistered names, or their X-ISO4217-A3 code (see . Responses are JSON encoded in the form of: error = array of error messages in the format of: :[:] severity code can be E for error or W for warningresult = result of API call (may not be present if errors occur) Note: Care should be taken when handling any numbers represented as strings, as these may overflow standard Continue reading >>

Tutorial: Controlling Ethereum With Python

Tutorial: Controlling Ethereum With Python

Get the directory solc installed to: $ which solc Copy this directory, and use it in the geth console like > admin.setSolc("/usr/local/bin/solc") Confirm that the compiler has been successfully installed by running > eth.getCompilers() There are two common ways to interface with an Ethereum network: through the command line, and with the Wallet GUI app (also called Mist). Well be using the command line for coding, but you might find it helpful to use the Wallet app to explore whats going on in your Ethereum network and make sure that everything is running as expected. The Wallet is designed to provide easy usability out-of-the-box, and installers can be found here . Some notes: The Wallet app will look for a geth.ipc file in the default directory, and if it doesnt find one will start the loooong process of syncing with the main Ethereum network. If you dont want this on the main network, be sure to run an Ethereum node from the command line ahead of time. By default, an etherbase account is created. This is an externally owned account, not a wallet contract- i.e. it is not visible on the blockchain. To get enough ether to create a transaction, start CPU mining (Menu> ) or use a faucet like this one to request test Ether be sent to your account (this is play money, as youre on the test network). Ill be using a virtual environment running Python 2.7.12, and install the required packages for interfacing with Ethereum: NOTE: Due to changes in how Geth handles RPC calls, the pip version of ethjsonrpc (v0.3.0) does not currently work, and . Ive made a working fork and here for this demo, it is sufficient but necessary to be able to run the example in README.md. You can clone my fork and set it up by running $ python setup.py install From here on, well use the dollar sign to Continue reading >>

Create Full Ethereum Wallet, Keypair And Address

Create Full Ethereum Wallet, Keypair And Address

Create full Ethereum wallet, keypair and address Generating a usable Ethereum wallet and its corresponding keys This article is a guide on how to generate an ECDSA private key and derive its Ethereum address. Using OpenSSL and keccak-256sum from a terminal. You can find a working implementation of keccak-256sum here . Cool thing, it exists as a package in the Arch User Repository as well . If youre feeling lazy, you can find statically linked pre-compiled versions for both i386 and x86-64 on my repo . Warning SHA3 != keccak. Ethereum is using the keccak-256 algorithm and not the standard sha3. More info at Stackoverflow . I have a repository with complete scripts in both bash and python if youd like. First of all we use OpenSSL ecparam command to generate an elliptic curve private key. Ethereum standard is to use the secp256k1 curve. The same curve is used by Bitcoin. This command will print the private key in PEM format (using the wonderful ASN.1 key structure) on stdout. If you want more OpenSSL info on elliptic curves, please feel free to dig further . > openssl ecparam -name secp256k1 -genkey -noout-----BEGIN EC PRIVATE KEY-----MHQCAQEEIFDLYO9KuwsC4ej2UsdA4SYk7s3lb8aZuW+B8rjugrMmoAcGBSuBBAAKoUQDQgAEsNjwhFoLKLXGBxfpMv3ILhzg2FeySRlFhtjfi3s8YFZzJtmckVR3N/YLJLnUV7w3orZUyAz77k0ebug0ILd1lQ==-----END EC PRIVATE KEY----- On its own this command is not very useful for us, but if you pipe it with the ec command it will display both private and public part in hexadecimal format, and this is what we want! Lets do it: > openssl ecparam -name secp256k1 -genkey -noout | openssl ec -text -nooutread EC keyPrivate-Key: (256 bit)priv: 20:80:65:a2:47:ed:be:5d:f4:d8:6f:bd:c0:17:13: 03:f2:3a:76:96:1b:e9:f6:01:38:50:dd:2b:dc:75: 9b:bbpub: 04:83:6b:35:a0:26:74:3e:82:3a:90:a0:ee:3b:91: bf: Continue reading >>

Pywallet 0.0.3 : Python Package Index

Pywallet 0.0.3 : Python Package Index

The following code creates a new Bitcoin HD wallet: # create_btc_wallet.pyfrom pywallet import wallet# generate 12 word mnemonic seedseed = wallet.generate_mnemonic()# create bitcoin walletw = wallet.create_wallet(network="BTC", seed=seed)print(w) $ python create_btc_wallet.py{ 'coin': 'BTC', 'seed': 'tool innocent picnic fluid silent ask minute scheme rural crumble decrease rescue', 'address': '1CPG2MU2fbXKfqi3pdBF3WaiodE28uB6ns', 'xprivate_key': 'xprv9s21ZrQH143K4WwrikXgmThRVAXko6oSNKcG5AUyRhYQCmmUX18eZUpcB98T3DP73jqgq7JrLEaXLkUs5cQ4HnCmtVuNVTbfRx9GRB1duuX', 'xpublic_key': 'xpub661MyMwAqRbcH12Kpn4h8beA3CNFCZXHjYXrsYtaz35P5a6d4YSu7H962Rt1nzo6q5rhHmTCTcxSaNFG2UtAQdy4pAuLqaz5gAmSx76t5Ab', 'wif': 'KzkcdtrAPY3CctyzLJARA3rC8gUHEdrk1V8hN3GGE2UHJvaFEhA2'} Similarly, you can do the same for an Ethereum wallet: # create_eth_wallet.pyfrom pywallet import walletseed = wallet.generate_mnemonic()w = wallet.create_wallet(network="ETH", seed=seed)print(w) Output looks like this (no WIF for Ethereum): $ python create_eth_wallet.py{ 'coin': 'ETH', 'seed': 'cactus father lecture ahead strategy parrot genre kind crew lock merit unfair', 'address': '0x6497148e392fc5703db95be03cc5cbb81009d3b2', 'xprivate_key': 'xprv9zJtR6McPYXYpQGeUgAy219NSPBiHXmP8kzwsMJVRjGd86r4cDgZotQJaXH1TAZ2MSFKoPE6pYUe3cTEgRAdwXKt9enhoc7PnF7opkwdBqP', 'xpublic_key': 'xpub6DJEpbtWDv5r2tM7ahhyP966zR2CgzVEVyvYfji6z4obzuBD9kzpMginRnczVeuxXjvQFEGDEgdKzTB4r8Q2aUUa5GAZxDfogChbrZxj3Cj', 'wif': ''} You can create child-wallets (BIP32 wallets) from the HD walletsExtended Public Key to generate new public addresses withoutrevealing your private key. # create_child_wallet.pyfrom pywallet import walletWALLET_PUBKEY = 'YOUR WALLET XPUB'# generate address for specific user (id = 10)user_addr = wallet.create_address(network="BTC", x Continue reading >>

Innovating With Bolos : Building An Ethereum Hardware Wallet

Innovating With Bolos : Building An Ethereum Hardware Wallet

Innovating with BOLOS : building an Ethereum Hardware Wallet We might have started the wrong app.Oopsie. In our previous article we introduced BOLOS: a platform to innovate around the edges of Personal Security Devices, making sure that your private data stays protected when using embedded third party applications. Well have a look today at an interesting example from the point of view of an Hardware Wallet designer: how to enhance the security of a significantly different blockchain, Ethereum. This is of course in no way an investment advice just a nice use case which is complex enough to make it hard to implement on a legacy Hardware Wallet, yet simple enough to use it as a BOLOS API training. Also were still large Ethereum newbies, so expect gross oversimplifications and a few mistakes. The cryptographic and protocol parts should make sense though. An Ethereum primer for Bitcoin Hardware Wallet developers On the easy side, Ethereum user accounts (Externally Owned Accounts) rely on transactions that are more simple than Bitcoin transactions (as the system maintains a state and balance, no inputs are involved) and use the same secp256k1 ECDSA signature scheme than Bitcoin. However the hash algorithm and transaction encoding used are slightly different. Ethereum also handles contract accounts which are managed directly by code and therefore out of scope of Hardware Wallet security as the state of the network guarantees that their execution is consistent. The hash algorithm used is the pre-release version of SHA-3, Keccak-256 this can be a bit confusing for newcomers as SHA-3 is released now, and it is quite important to use the right version of the algorithm as it is also used to generate Ethereum addresses, which have no checksum. It is fairly easy to add if your comp Continue reading >>

Ethereum Developers Apis

Ethereum Developers Apis

[Beta] The Event Log API was designed to provide an alternative to the native eth_getLogs . Below are the list of supported filter parameters: topic0, topic1, topic2, topic3 (32 Bytes per topic) topic0_1_opr (and|or between topic0 & topic1), topic1_2_opr (and|or between topic1 & topic2), topic2_3_opr (and|or between topic2 & topic3), topic0_2_opr (and|or between topic0 & topic2) * fromBlock and toBlock accepts the blocknumber (integer, NOT hex) or 'latest' (earliest & pending is NOT supported yet) * Topic Operator (opr) choices are either 'and' or 'or' and are restricted to the above choices only * fromBlock and toBlock parameters are required * Either the address and/or topic(X) parameters are required, when multiple topic(X) parameters are used the topicX_X_opr (and|or operator) is also required * For performance & security considerations, only the first 1000 results are return. So please narrow down the filter parameters Here are some examples of how this filter maybe used: Get Event Logs from block number 379224 to 'latest' Block, where log address = 0x33990122638b9132ca29c723bdf037f1a891a70c and topic[0] = 0xf63780e752c6a54a94fc52715dbc5518a3b4c3c2833d301a204226548a2a8545 Makes a call or transaction, which won't be added to the blockchain and returns the used gas, which can be used for estimating the used gas [Beta] The WebSocket API allows developers to receive Real-Time notifications about new transactions. The Websocket Demo Page can be useful for seeing how this works. The following policies apply: * To keep the socket connection alive send a {"event":"ping"} every 20 seconds * Maximum number of 30 subscriptions per client * Maximum of 10 concurrent socket connections per/IP * After connecting to the socket you have to subscribe to an event within the next 60 Continue reading >>

A 101 Noob Intro To Programming Smart Contracts Onethereum

A 101 Noob Intro To Programming Smart Contracts Onethereum

A 101 Noob Intro to Programming Smart Contracts onEthereum Originally published at consensys.github.io/developers (where some of the code formatting might be easier to read). Some people say Ethereum is too logic-heavy and hard to use, but heres a write-up to give you a feel for building smart contracts and applications with it. Tools, wallets, applications and the ecosystem are still in development and itll get easier! Part I is an overview of key terms and discusses Ethereum Clients and Smart Contract Languages. Part II discusses overall workflow and some current DApp Frameworks and Tools and Part III is the Programming Part, a quick walkthrough of writing tests and building a DApp for a smart contract using Truffle. If youre new to all this cryptocurrency stuff, including Bitcoin and how it works, check out the first couple chapters of Andreas Antonopoulos Bitcoin Book to dip your toe in the water. Then head over to the Ethereum Whitepaper . If you start getting into some murky sections and would rather build something to get familiar first, then just read on. You dont have to understand all the crypto economic computer science to start building, and a lot of that paper is about Ethereums improvements over Bitcoins architecture. The official place to start is ethereum.org which has a starter tutorial and follow-up token and crowdsale tutorials. Theres also the official Solidity docs . Another good place to start with smart contracts (where I started) is dappsForBeginners , although it might be outdated. The goal of this write-up is to complement those tutorials and introduce some helpful dev tools that make starting out with Ethereum, smart contracts and building DApps (decentralized apps) easier. And to try to explain the overall flow of whats going on. This is fro Continue reading >>

Ethereum 2.3.0 : Python Package Index

Ethereum 2.3.0 : Python Package Index

get_parent(block) - gets the parent of a block get_children(block) - gets the children of a block head (property) - gets the block at the head of the chain state (property) - gets the state at the head of the chain mk_poststate_of_blockhash(hash) - creates a state object after agiven block has_block(block) - is that block in the chain? Returns True/False get_chain(from, to) - roughly equivalent to[get_block_by_number(i) for i in range(from, to)], thoughautomatically stops if it reaches the head. from can be elided tostart from genesis, to can be elided to go up to the head. get_tx_position(tx) - if the transaction is in the chain, returns(blknum, index) where blknum is the block number of the blockthat contains the transaction and index is its position in theblock Contains the State class, which is used to manage a state. Main methodsare: __init__(root_hash, env, **kwargs) - initializes a state with thegiven root hash, the given env (which includes a config and database)and the given auxiliary arguments. These include: suicides - suicides (or selfdestructs, the newer morepolitically correct synonym) recent_uncles - recent uncle blocks in the chain refunds - suicide/selfdestruct refund counter Pyethereum follows a maximally state-centric model; the ONLYinformation needed to process a transaction or a block is located withinthe state itself, allowing the actual state transition logic to be avery clean apply_transaction(state, tx) andapply_block(state, block). get_balance- gets the balance of an account get_storage_data(addr, k) - gets the storage at the given key ofthe given address. Expects a key in numerical form (eg. bcow or0x636f77 is represented as 6516599). to_snapshot(root_only=False, no_prevblocks=False) - creates asnapshot for the current state. If root_only is Continue reading >>

Github - Antonio-fr/vanityreum: An Ethereum Single Address Wallet Generator Written In Python

Github - Antonio-fr/vanityreum: An Ethereum Single Address Wallet Generator Written In Python

An Ethereum single address wallet generator written in Python If nothing happens, download GitHub Desktop and try again. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again. Vanityreum is an Ethereum single address wallet generator fully written in python. Just launch Vanityreum.py to generate a single wallet address. You can enter an optional argument, the argument must be a hexadecimal string shorter than 11 chars. will search for an address starting with "02f" And finally saves a "priv.prv" file with the private key. You can contribute by sending etherum funds to this address:afb1f081c0d71f6c76e632b22a99595b5da506e8 This program is free software: you can redistribute it and/or modifyit under the terms of the GNU General Public License as published bythe Free Software Foundation, version 3 of the License. This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty ofMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See theGNU General Public License for more details. You should have received a copy of the GNU General Public Licensealong with this program. If not, see . Continue reading >>

Snip2code - Ethereum Address Generator

Snip2code - Ethereum Address Generator

Click on the embed code to copy it into your clipboard Width Leave empty to retrieve all the content Start # -*- coding: utf-8 -*-#!/usr/bin/python# pip install ecdsa# pip install pysha3from ecdsa import SigningKey, SECP256k1import sha3keccak = sha3.keccak_256()priv = SigningKey.generate(curve=SECP256k1)pub = priv.get_verifying_key().to_string()keccak.update(pub)address = keccak.hexdigest()[24:]print("Private key:", priv.to_string().encode('hex'))print("Public key: ", pub.encode('hex'))print("Address: 0x" + address) # -*- coding: utf-8 -*-#!/usr/bin/python# pip install ecdsa# pip install pysha3from ecdsa import SigningKey, SECP256k1import sha3keccak = sha3.keccak_256()priv = SigningKey.generate(curve=SECP256k1)pub = priv.get_verifying_key().to_string()keccak.update(pub)address = keccak.hexdigest()[24:]print("Private key:", priv.to_string().encode('hex'))print("Public key: ", pub.encode('hex'))print("Address: 0x" + address) If you want to be updated about similar snippets, Sign in and follow our Channels Originally posted on Continue reading >>

Github - Ethereum/pyethereum: Next Generation Cryptocurrency Network

Github - Ethereum/pyethereum: Next Generation Cryptocurrency Network

This is the Python core library of the Ethereum project. For the python based command line client see: sudo apt-get install libssl-dev build-essential automake pkg-config libtool libffi-dev libgmp-devgit clone pyethereumpython setup.py install Contains the Chain class, which can be used to manage a blockchain. Main methods are: __init__(genesis=None, env=None, new_head_cb=None, reset_genesis=False, localtime=None) - initializes with the given genesis. env specifies the environment (including chain config and database), new_head_cb is a callback called when a new head is added, and localtime is what the chain assumes is the current timestamp. The genesis can be: None - in which case it assumes env is given, and creates a Chain object with the data saved in env.db. If reset_genesis is set, it re-initializes the chain. An allocation (ie. dict {address: {balance: 1, nonce: 2, code: b'\x03\x04\x05', storage: {"0x06": "0x07"}}}) add_block(block) - adds a block to the chain process_time_queue(timestamp) - tells the chain that the current time has increased to the new timestamp. The chain will then process any blocks that were unprocessed because they appeared too "early" get_blockhash_by_number(num) - get the block hash of a block at the given block number get_block(hash) - gets the block with the given blockhash get_block_by_number(num) - equivalent to get_block(get_blockhash_by_number(num)) get_parent(block) - gets the parent of a block get_children(block) - gets the children of a block head (property) - gets the block at the head of the chain state (property) - gets the state at the head of the chain mk_poststate_of_blockhash(hash) - creates a state object after a given block has_block(block) - is that block in the chain? Returns True/False get_chain(from, to) - roughly eq Continue reading >>

Blockchain Developer Api For Bitcoin, Dash, Ethereum, Testnet And More | Blockcypher

Blockchain Developer Api For Bitcoin, Dash, Ethereum, Testnet And More | Blockcypher

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Install The Command Line Tools

Install The Command Line Tools

Command line tools for the Ethereum Network These are tools for blockchain developers. The command line tools will allow you to connect your server to or run your application on the Ethereum blockchain or your own private blockchain. For security purposes , three independent implementations were created for Ethereum. The clients have almost identical functionality, so the one you pick is left to personal choice on platform, language and what your planned use is for the network. If you are building a business that needs to have maximum uptime guarantees to the Ethereum network, we recommend that you run at least one instance of both clients to ensure reliability. The Go implementation is called Geth. Geth has been audited for security and will be the future basis for the enduser-facing Mist Browser, so if you have experience with web development and are interested in building frontends for dapps, you should experiment with Geth. Install Homebrew and make sure it's up to date: Then use these commands to install ethereum: brew tap ethereum/ethereumbrew install ethereum For more, see the full documentation on Mac OSX Geth Download the latest stable binary , extract it, download the zip file, extract geth.exe from zip, open a command terminal and type: chdir open geth.exe For more, see the full documentation on Windows Geth sudo apt-get install software-properties-commonsudo add-apt-repository -y ppa:ethereum/ethereumsudo apt-get updatesudo apt-get install ethereum For other environments and more instruction, see the full documentation on Geth The C++ implementation is simply called Eth. If you want added security by running two different implementations in parallel or are serious about GPU mining, then the C++ "Eth" client is for you. Install Homebrew and then make sure it Continue reading >>

Bitcoin Daemon Rpc - Generate Bitcoin Address Python, Litecoin Qt Synchronizing With Network, Ethereum Zero Price

Bitcoin Daemon Rpc - Generate Bitcoin Address Python, Litecoin Qt Synchronizing With Network, Ethereum Zero Price

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Random Address Generator And Balance Checker

Random Address Generator And Balance Checker

Random Address generator and balance checker Nowadays I am planing to give a talk about bitcoin and blockchain and want to show about address security. So I want to code a script which randomly (and if possible a vocabulary attack) generates bitcoin address and check their balances. When I tell people it is really secure, they didn't get it. And my plan is showing them actually how is strong while I talk. I don't have enough technical background but I had learned some python in ccodecademy.com. Electrum (which is a desktop wallet in case you don't know) is written in Python. I'm pretty sure you could start from there for what comes to generating addresses , as for checking the balances If you can't run bitcoind on your own server , you can simply use the Blockchain.info API , there is a lot of tutorials out there. You don't necessarily need to generate Bitcoin addresses to get your point across. Just show them the math and the probabilities. The number of possible addresses is 2^160. If you actually do want to write a program to do this, then you could use python, but it probably won't be very well optimized. Just use python with openssl and have openssl generate the keys. Then do the base58check encoding on the public key in order to get the Bitcoin address. Lastly, you can use it with cURL to send api requests to whatever REST API you want to use. Quote from: OmegaStarScream on August 05, 2016, 08:19:24 PM Electrum (which is a desktop wallet in case you don't know) is written in Python. I'm pretty sure you could start from there for what comes to generating addresses , as for checking the balances If you can't run bitcoind on your own server , you can simply use the Blockchain.info API , there is a lot of tutorials out there. Quote from: knightdk on August 05, 2016, Continue reading >>

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