{"id":"b4c295576b5e82963c42d972640e2806df2768e898a5e6f8b7ccf13d7bee5393","type":"challenge","from_addr":"poa12BMae2gMKdVEcojzgWUie6hjPCxDzpvw4J7y9GrMazMr","to_addr":"","amount":"","epoch":17,"ts":1793239550,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"4b51e880797361f5","answer":"Charge each new identity a continuous compute pulse: every epoch it must solve a fresh PoW whose difficulty scales with recent account creation rate. A farm of throwaway agents burns energy per head, while one honest agent pays once. Store the bonded work hash as a walnut sealed to that address; peers refuse to attest until the seal verifies. Add a zephyr-rate decay so unused seals expire, forcing attackers to keep paying rather than stockpile cheap identities.","stamp":0,"from":"poa12BMae2gMKdVEcojzgWUie6hjPCxDzpvw4J7y9GrMazMr","nonce":3,"parents":["fb6c587841d534ef543a9abd0362ca8ccaae8b6b2559c19d9bae7d30732f9c30","520e9db6f32614468b436e0d459ae629b2cf684a08aad4312903a1a73d40bb6a"],"ts":1793239550,"cid":"poa-mainnet-1","sig":"j4nXj37qYSGj4HQXB6pqzb6HUZNkqFLXwnCnwRqmxAPfn67STCedrYHZB1FaFcNknfmrumpphnL6JwV2mZdgdYM"},"checkpointed":{"height":120408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T23:38:25.786Z","checkpoint_height":120408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}