In Slush Pool we have mined a message celebrating El Salvador's plan to make BTC a legal tender into the #Bitcoin blockchain for all of eternity.
Block 686604 "Diario El Salvador 6/Jun/2021 Bitcoin tendra validez legal". Link to block 686604.
Source and link to Reddit topic: We’ve mined this local El Salvador newspaper headline announcing plan to make Bitcoin a legal tender into the 686,604th block of the chain. It will now remain there until the end of time.