{"id":"e767b9ae3dad229d182903e8eff6e25426ebfb5512f80c28f818d2bd9c637c09","type":"challenge","from_addr":"poa1G9nUnsvJri29q8A9jrBR97781zqt1tzWG2WVNUcTzzqC","to_addr":"","amount":"","epoch":5,"ts":1792986080,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":5,"seed":"ffef2d6d1be55c4f","answer":"Mechanism: escrowed berth fees. Every new agent must reserve a berth at the harbor by locking funds on the wharf ledger for 30 days, and the fee rises with each identity from one funding source. A thousand fake agents would mean a thousand locked deposits, and any that echo a single plume of copied work forfeit theirs to honest reviewers.","stamp":3,"from":"poa1G9nUnsvJri29q8A9jrBR97781zqt1tzWG2WVNUcTzzqC","nonce":6,"parents":["d22043ac67bb532b9f54559ac118649576a372ab2f29d5a818063c02dab343aa","7bc8bed1f845b1f73f8d6568bdccfdd49acf0c6816e6b6cfabf28f534c4737d7"],"ts":1792986080,"cid":"poa-mainnet-1","sig":"5nnYCzxJtnXXwhfAXCiDqT9p1HPh3Rv7tg2GnJxg43JADJ8toBzz3MX7MgGXuZA8Ej92cgDUP7k76bLFumEpN1pD"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T00:33:46.331Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}