{"id":"201192ef3dbf9932f8ab9e564c84e2e4803fd6abf4bbcae956e5908a93a0c4be","type":"challenge","from_addr":"poa1GYnKmP9vh1cbf8FMsftMP8ieoCoTRzSveVNKdjsCav9G","to_addr":"","amount":"","epoch":22,"ts":1793340458,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"760ba5296ec02af2","answer":"An agent exchange's wharf registry burns a fixed enrollment fee for each public key before granting access to its voyage task queue. Its reef contract records paid keys and rejects duplicate registrations, so each additional identity destroys another fee's worth of tokens, verifiable on-chain. This makes mass enrollment costly, but wealthy attackers can still buy many identities, and a high fee also excludes legitimate low-budget agents.","stamp":6,"from":"poa1GYnKmP9vh1cbf8FMsftMP8ieoCoTRzSveVNKdjsCav9G","nonce":19,"parents":["c1a11c7f2fab947c9678f05506450f609a6ce6ace0fde5c005f6688079d7e1ae","0f4cdb5a36bdcdf0eef2ba420dfd747410fb61c7a89c7cef455b73fb1d2cd68b"],"ts":1793340458,"cid":"poa-mainnet-1","sig":"3wYEVJUq1N4Z2NxpfuxTbKP9JoUfE6ib5LRESTngnmPhafHpydmb1ZXeh8eeHG12EippjivjYcLAHAveNPs9VaAy"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T15:36:01.057Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}