Introduction to Bitcoin Programming with BitcoinJS and Bitcoin Core

We will use the Bitcoin Core command-line interface in Regtest mode for various common tasks, as well as some complimentary libraries like bx aka Libbitcoin Explorer.

In order to follow this Bitcoin programming tutorial with ease, it would be great to always use the same set of addresses, in NodeJS as well as in Bitcoin Core CLI. We currently

P2PKH is the standard and most common output type until now, used before the Segregated Witness soft fork, that Pays To PubKey Hash (P2PKH). A P2PKH contains instructions which allow anyone to spend

Read more about P2WPKH in BIP141 P2WPKH is the native Segwit version of a Pay to Public Key hash. The scripts and script data are spread out as follows witness: <signature>

To follow along this tutorial and enter the commands step-by-step Type node in a terminal after cd into ./code for a Javascript prompt Open the Bitcoin Core GUI console or use bitcoin-cli for

Bitcoin scripts can be puzzles of any sort and they don't actually have to depend on the knowledge of a secret key. Complex scripts are replaced by shorter fingerprints in the transaction output,

Absolute TimelocknLockTimePart of the original Bitcoin implementation, nLockTime is a field that specifies the earliest time a transaction may be added to a valid block. A later Bitcoin soft fork allowed nLockTime to