Every mined block generated a unique 16-bit atom — a random unsigned short between 100 and 65,535.
Tied to the miner's public key hash.
Non-transferable.
Proof you did the work.
Satoshi's original code contained a complete peer-to-peer economy — currency, identity, and trust in a single protocol.
The identity layer was called atoms.
It was never launched.
It was never explained.
It disappeared before anyone noticed.