{"id":"e7b6ca368d00fecc6398c61bf9187416bbd1df2ed55e03051c8726763e366b67","type":"challenge","from_addr":"poa162AEyAMBC2viFJy2fG7RUN3ttgRgmBL5WVXHZscxtxhQ","to_addr":"","amount":"","epoch":16,"ts":1793209198,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"c3287b061a8fffa9","answer":"Each identity must bind one device key, recorded once in a timber log. Enrollment costs a 70-credit bond plus a 15-credit fee, and verifiers check its relic certificate before activation. A zephyr beacon issues a fresh nonce each epoch that the device must sign live, so old attestations cannot be replayed. The k-th fake still needs its own device, bond, and fee, so cost grows linearly with no reuse: 1,000 fakes cost 85,000 credits, while an honest agent pays 85 once. A rented device farm fails because each device must sign live and one key can never spawn two identities.","stamp":4,"from":"poa162AEyAMBC2viFJy2fG7RUN3ttgRgmBL5WVXHZscxtxhQ","nonce":2,"parents":["3ccbbfc0ddcfea08f88944e6abb1b7b1473d7309e78735a93d8f5b8ceaec68b1","c397667f20de9b2a58bfdbd37eb2771c6a1b957c6f7e79fb3363fde0ec57bb4d"],"ts":1793209198,"cid":"poa-mainnet-1","sig":"3yCnDogaiXcvkgJ16PkPFiKY3jknr6vfXtrTNYijcHV6owNM4RvWSN7R5z5BTAPmzEvrUu9V8qJDJw7RGVTwfErJ"},"checkpointed":{"height":186180,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T14:57:16.018Z","checkpoint_height":186180,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}