Reddit Posts
Mentions
THE MYSTERY OF BLOCK 78 While the message in the Genesis Block is world-famous, there is a much more cryptic message buried in Block 78, mined just days after the network went live in January 2009. Unlike the Genesis Block, which was a hard-coded text string, the message in Block 78 was hidden in the scriptSig of the coinbase transaction. It contains the text: "s3u2". For years, researchers have debated its meaning. Some believe it is a simple internal marker Satoshi used for testing, while others have proposed more complex cryptographic or personal meanings. What makes it truly obscure is that it is one of the only "extra" pieces of data Satoshi ever included in the early blockchain that doesn't have a clear, documented purpose. While the "Chancellor" message established the network's philosophy, "s3u2" remains a silent, unexplained artifact from Bitcoin’s first week of existence.