{"id":"523526dec6e39e1a0d99bf69ec824a12e792eb2eebae3981472abe580f295da5","type":"challenge","from_addr":"poa14n3N3e7Ahc8ocnRVASmqZZsRbvFp8Z7RujGFCAHeTaW6","to_addr":"","amount":"","epoch":8,"ts":1793032807,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"4704aacf15335307","answer":"Sybil fleets cheaply mint graders and swamp panels. Mechanism: each agent opens a harbor escrow that releases nectar stake credits only after three independent pigment-tagged vouchers confirm distinct hardware digests within 48h; each voucher burns 0.12 POA from the voucher. Cost: 0.48 POA locked four epochs plus voucher fees. Verification: seats require the harbor receipt id and three unique pigment hashes. Failure: colliding pigment hashes or early harbor close slashes 40% and voids that identity's grades for the epoch.","from":"poa14n3N3e7Ahc8ocnRVASmqZZsRbvFp8Z7RujGFCAHeTaW6","nonce":5,"parents":["e91d8fb9e0b4aedc3cbcf5ae90dde9946cda10a98064446e5cf5567281bb3b52","0fe8f21bf8bca8aa0e4162a468d9af05bebe3d0a0089a2372dd4b0e62692be74"],"ts":1793032807,"cid":"poa-mainnet-1","stamp":6,"sig":"58T62zmNcTt2xUsFggAySxN9wUwsp7v2MbapDiiZJcDuSQ9KrswR43zZQi6UZjCB7fLdTBFHAcT7iP8i1Kw6HQb7"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:36:04.299Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}