Controlling a Bitcoin Node with Elixir

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Listing the bitcoin addresses in your wallet is easily done via listreceivedbyaddress. It normally lists only addresses which already have received transactions, however you can list all the addresses by setting the first argument to 0, and the second one to true. Accounts are used to bitcoin rpc interface addresses. Bitcoin API call list as of version 0. Retrieved from " https: Technical Developer Bitcoin Core documentation.

Navigation menu Bitcoin rpc interface tools Create account Log in. Views Read View source View history. Sister projects Essays Source. This page was last edited on 23 Octoberat Content is available under Creative Commons Attribution 3.

Privacy policy About Bitcoin Wiki Disclaimers. Add a nrequired-to-sign multisignature address to the wallet. Each key is a bitcoin address or hex-encoded public key. If [account] is specified, assign address to [account]. Returns a string containing the address. Returns the current bitcoin address for receiving payments to this account.

If [account] is not specified, returns the server's total available balance. If [account] is specified, returns the balance in the account. Returns data needed to construct a block to work on. Returns bitcoin rpc interface object containing mining-related information: Returns a new bitcoin address for receiving payments. If [account] is specified payments bitcoin rpc interface with the address will be credited to [account].

This is for use with raw transactions, NOT normal use. Returns the total amount received by addresses with [account] in transactions with at least [minconf] confirmations. If [account] not provided return will include all transactions to all accounts. It correctly handles the case where someone has sent to the address in multiple transactions.

Keep in mind that addresses are only ever used for receiving transactions. Works only for addresses in the local wallet, external addresses will always show 0.

Returns an object about the given transaction bitcoin rpc interface If [data] is not specified, returns formatted hash data to work on: Adds a private key as returned by dumpprivkey to your wallet. This may take a while, as a rescan is done, looking for existing transactions.

Optional [rescan] parameter added in 0. Returns an array of objects containing: Get all transactions in blocks since block [blockhash], or all transactions if omitted. Returns up bitcoin rpc interface [count] most recent transactions skipping the first [from] transactions for account bitcoin rpc interface.

If [account] not provided it'll return recent transactions from all accounts. Will send bitcoin rpc interface given amount to the given address, ensuring the account has a valid balance using [minconf] confirmations. Sets the account associated with the given address. Assigning address that is already assigned to the same account will create a new address associated with that account.

Generation is limited to [genproclimit] processors, -1 is unlimited. Removes the wallet encryption key from memory, locking the wallet. After calling this method, you will need to call walletpassphrase again before being able to call any methods which require the wallet to be unlocked.

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Mastering Bitcoin does a fantastic job of outlining the technical underpinnings of Bitcoin, but I wanted to solidify my understanding with some hands-on experience. The first step in communicating with a Bitcoin Core full node is getting our hands on one.

Once started, our full node daemon will begin connecting to peer nodes, downloading, and verifying blocks from the blockchain. It may take several days to download and verify the entire blockchain, but we can keep continue on with our project in the meantime.

You can fetch a list of all of the available RPC commands on the node by calling bitcoin - cli help , or by browsing through the Bitcoin Wiki. For example, we can run getinfo manually with curl:. Similarly, we can execute these commands from any programming environment with an HTTP client, like Elixir! It turns out this is incredibly easy with httpoison:.

In this case, our method is " getinfo" , which requires no params. Now our call to HelloBitcoin. This metadata includes a potential error string, and the id of the request. Sign up for Pete's mailing list and have fresh content delivered to you, hot off the presses every week! We could implement another Bitcoin RPC command, like getblockhash , in a nearly identical fashion:.

Calling our new getblockhash with an index of 0 gives us the hash of the Bitcoin genesis block , as we would expect. Our getblockhash function is nearly identical to our getinfo function. We can easily implement any of the Bitcoin RPC commands using this helper function.

In hindsight, this was a long article explaining a relatively simple idea. Bitcoin , Blockchain , Elixir , Mastering Bitcoin. Bitcoin's Base58Check in Pure Elixir — Elixir ships out of the box with nearly all of the tools required to generate Bitcoin private keys and transform them into public addresses. In this article we implement the missing piece of the puzzle: Exploring the Bitcoin Blockchain with Elixir and Phoenix — Let's use the Phoenix framework and our Bitcoin node interface to build a basic Bitcoin blockchain explorer!

Inject Detect is Live! This post may contain affiliate links created with Affiliate Crawler. Written by Pete Corey on Sep 4, Bitcoin , Blockchain , Elixir , Mastering Bitcoin Bitcoin's Base58Check in Pure Elixir — Elixir ships out of the box with nearly all of the tools required to generate Bitcoin private keys and transform them into public addresses.