https://en.bitcoin.it/wiki/Transaction https://en.bitcoin.it/wiki/Script https://en.bitcoin.it/wiki/OP_CHECKSIG https://en.bitcoin.it/wiki/List_of_address_prefixes
https://live.blockcypher.com/btc/pushtx/ https://blockstream.info/testnet/ https://chain.so/
https://github.com/indutny/bn.js/ https://github.com/cryptocoinjs/bs58 https://ramdajs.com/docs/
https://docs.balzac-lang.xyz/nutshell.html https://blockchain.unica.it/bitml/docs/