Feeding a coin

Holders of a coin add text to its corpus. You sign a message in your wallet; there is no transaction. The message shows the coin, the sha256 and size of your text, a one-time nonce and an expiry 10 minutes ahead.

• 20 bytes to 4 KB per submission, up to 5 per wallet per coin per hour.
• Your balance is read on-chain at submit time: you must hold the coin.
• Weight: x1, x2 if you hold the coin, x3 if you also hold $TRAIN.
• Holder and reply text together are capped at 50% of what the model reads, so nobody can hijack a coin.
• Each coin keeps the newest 200 KB of holder text; older text drops out first.
• Your text passes the same filters as seed text. Accepted text is read in the next slice.