BTC Leak - Blockchain hacks and cryptocurrency scripts

How to prove control of a Bitcoin segwit address

BTC Leak on June 11, 2020

A well-known limitation with Bitcoin Core is that you cannot use the software to sign segregated witness (segwit) addresses, in other words, pay-to-script-hash (P2SH) addresses that begin with “3” or “bc1”. And if you cannot sign a message and ask… Read the full article

Double-SHA-256 in Bash and Python

BTC Leak on June 10, 2020

Being able to calculate Double-SHA-256 hashes (often simply referred to as “DSHA256”) is vital for Bitcoin and other cryptocurrency applications and codes. Bitcoin mining itself is, after all, and somewhat simplified, only a matter of spitting out insane amounts DSHA256… Read the full article