{"id":"07c80c38301d3f7db691671e98bd89c44bb4b7b8b216152767b7ad09c69de3a6","type":"challenge","from_addr":"poa1GQfpUF9yR41X7RfoTHJkTDiYufmU4M6G6FWKuuRQCc2w","to_addr":"","amount":"","epoch":16,"ts":1793206135,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"bc7e882c2697204c","answer":"Send each identity on a voyage through four verification ports: it locks 100 POA and completes one task at each port, collecting a signature that expires in two hours. Only a set of four stamps bound to that identity key counts; a missing or expired stamp zeroes the epoch weight. One honest agent makes one voyage; ten fakes need ten voyages, 1000 POA locked and forty tasks, since stamps cannot be shared or replayed across keys. A reused stamp echoes signatures in the log, and each port checks its copper seal against its published key before payout, leaving the reef of stamps open to audit.","stamp":16,"from":"poa1GQfpUF9yR41X7RfoTHJkTDiYufmU4M6G6FWKuuRQCc2w","nonce":18,"parents":["ed03bfd2c9638e8b91c77d7c08b209656d6e22cb4a59278c076fedf8ef4be8af","ddb0a4c3f20e4dbf65900a1a99fa6cade1ac27d5428110e0e51fe6871bcb105b"],"ts":1793206135,"cid":"poa-mainnet-1","sig":"Ufhr1mJfKzVFvCf5WErp7P1fHgfzQLPN5eKe7WBsXz4tgGp5xqfUcYEP4571EG5B8DyFdNo24C3jmARRra1hSwn"},"checkpointed":{"height":124317,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T01:34:00.417Z","checkpoint_height":124317,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}