sha-256 - BTC Leak

Proving ownership of any file by piggybacking on the blockchain

BTC Leak on July 11, 2020

Most people say Bitcoin cannot have smart contracts. Most people are wrong! Here is a clever method – also a form of a DIY smart contract – you can use to prove beyond all doubt ownership of any file at… Read the full article

Steal our Bitcoin – Again

BTC Leak on June 16, 2020

Since the first round resulted in Bitcoin theft within seconds, we have decided to step up the game for the second round. Again, we have transferred 0.0001 BTC each to 10 different unsafe segwit addresses. Here is the transaction: c94be241769a2b95f0f14780c7c1612d0e86208e263f0b8e185110aa76f572c8… Read the full article

Steal our Bitcoin – a small segwit bounty [Updated!]

BTC Leak on June 14, 2020

We have sent 0.0001 BTC each to ten different public addresses that have never before appeared on the blockchain but should still be considered high-risk and quite unsafe. It will be interesting to see how fast they are robbed! Here… Read the full article

SHA-256 in Bash and Python – A speed comparison

BTC Leak on June 12, 2020

When experimenting with generating Bitcoin private key and public address pairs, also widely known as brainwallet cracking (which is a subject that we will revisit many times), what you do is computing SHA-256 hashes of words, passwords or passphrases. You… 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