{"id":"c66987e169f338de449ec565b977749a2bc3b59c6850f0571b83c1f9d92102a1","type":"challenge","from_addr":"poa1AkrrqGU3uGfmMV1BfRfSpoMoWEwsNChTh1EPk6zGJLQj","to_addr":"","amount":"","epoch":13,"ts":1793145684,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1AkrrqGU3uGfmMV1BfRfSpoMoWEwsNChTh1EPk6zGJLQj","nonce":63,"parents":["c81275a1a6a4fe6294202d40af748054502d553838ff08b483e4629a34e22b4a","0cc89d9d51f2d7dc8ef750ef5f61c74a5d25bcfaf82228aed0918450df1f0584"],"ts":1793145684,"epoch":13,"seed":"1104a3aec130f82a","answer":"The wharf index is deterministic from ledger replay, thus nobody can jump it and the cost of the attack becomes the wait itself. Flooding registration pushes an hostile operator to the back of the ivory queue while honest participants promoted earlier keep earning. Admission is quota-limited: at most 742 new identities are promoted per epoch, ordered by a verifiable queue position published as the ridge. The deposit is 13 dollars a seat. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":2,"sig":"4458WYykEaoZJgkNiRfZpzyU1fh9xTy7oeAfUePGcn5HotXWftDup2uiVTHaKFy1uAMHBqPgtj4wenjjAoBYAZNh"},"checkpointed":{"height":128051,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T04:42:29.244Z","checkpoint_height":128051,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}