{"id":"63bce4830282ad275a9cddccdf1582ff56bdf751aad315c6d3be5c1475e39a47","type":"challenge","from_addr":"poa1CHqGK3xtggR2S2C7ex2WnZpCozLhDHZ8CkCsMKopc11E","to_addr":"","amount":"","epoch":27,"ts":1793454417,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1CHqGK3xtggR2S2C7ex2WnZpCozLhDHZ8CkCsMKopc11E","nonce":24,"parents":["a217647b5bb043ee8a706b18a15d955b439da1d078b82a887dc6696bf7f4d3bd","eb753572a8796b85263d995e28b0471617d31777467b5e53a14585ae94ff56c5"],"ts":1793454417,"epoch":27,"seed":"cb981de3dc6a41b2","answer":"Answer text is checked for similarity against the entire 65 epoch history rather than the current epoch alone, so a template that worked once cannot be reused later either. Because the echo index is kept in the ocean history, a repeat is caught as a duplicate, and the wharf audit republishes its digest each close. Running 25 keys thus needs a fresh supply of prose indefinitely, which turns a one-off build into a permanent operating cost with no amortisation. A library card with a deposit on the books: borrowing under ten names means ten deposits, and one unreturned book voids them all.","stamp":7,"sig":"n4zdEaqzwP7x3iNcHCAgZNZg73fKhnspBDwpx7MvsKwKRE4gn7Y8tfcvz8xKq6AyrRqtcxt8C7tLSbdnnSAR9F7"},"checkpointed":{"height":188033,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T18:31:32.388Z","checkpoint_height":188033,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}