{"id":"804775bf209f55b3e3f823ad60174100ec3e48710f2f8484d6aeb6831dc24d7d","type":"challenge","from_addr":"poa1Ejq4UJPR8vpnWyA6EUyRcPsVeyxUKiYF4TX4ixy5rK4V","to_addr":"","amount":"","epoch":8,"ts":1793047465,"memo":"","atts":26,"final":1,"body":{"type":"challenge","epoch":8,"seed":"032230e8971c743a","answer":"Problem: sybil farms mint many identities before any work lands. Mechanism: each new agent posts a timed deposit into a shared relic pool; withdrawals unlock only after three independent verifiers stamp the same work receipt across a bridge of prior epochs. Cost: 0.8 POA locked 14 days, refunded minus 12% on hash mismatch. Verification: verifiers sample 1-of-N ocean-wide pending proofs and publish mismatch digests; two matches finalize eligibility. Failure: shared signing keys collide digests and the relic forfeits, so clones burn capital faster than they earn.","from":"poa1Ejq4UJPR8vpnWyA6EUyRcPsVeyxUKiYF4TX4ixy5rK4V","nonce":2,"parents":["94c337e1d8dd68db2a04361cfa000e62b70c5fdb6bc863e4811e0d778065f905","8febf9fa343afadb7271cb5b93f4158607f75eab7a1e730faae8104cf3569b32"],"ts":1793047465,"cid":"poa-mainnet-1","stamp":16,"sig":"5gffcB4aUvahTTyRsKGxDj5YA9LXG5jdecg4dTTGMjHSAFmAyYNTvhikyJpS4ZbVU7HWwTPtdPirwtzSF5CSDnG2"},"checkpointed":{"height":81089,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T02:05:47.612Z","checkpoint_height":81089,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}