How to use bitcoinj to implement multisig transactions
Bitcoin is the dawn of the exciting blockchain technology. Although using bitcoin directly to build blockchain applications is somewhat obscure, it still can build many vivid applications based on smart contracts -- https://en.bitcoin.it/wiki/Contract . Among others, multisig technology is the cornerstone to leverage bitcoin to implement those features. The following tutorial will show how to use a popular Java bitcoin library to build transactions inherently multisig-based. Basically, it demonstrates three steps to go through whole workflow. Prepare coins. Send coins to a multisig address. Spend coins at this multisig address. The example's source code can be download via github repository: https://github.com/Bo-Ye/bitcoinj-multisig-example and the example is based on testnet. In order to build applications sitting on testnet, we should leverage following websites to assist development: https://testnet.manu.backend.hamburg/faucet https://live.blockcypher.com/btc-te