Bitcoin has a hidden message that can never be deleted.
Bitcoin block 666,666 was mined on January 18, 2021.
It contains a message permanently written into the blockchain.
Using Bitcoin’s OP_RETURN, the miner embedded a Bible verse directly into the block data:
“Do not be overcome by evil, but overcome evil with good.” Romans 12:21
To make it happen, they paid more than 5x the normal fee to guarantee inclusion in that exact block.
The transaction is linked to wallets named “GoD” and “BibLE”, and you can verify it on any public block explorer.
Once it’s there, it can’t be removed.