{"id":"15cba0d66f04fc3428ce8a37d3edd2c2c42663ee714f164548659be55e87354a","type":"challenge","from_addr":"poa1HuWY59WzUnAYE9miVSF8R8wYKrRDhUKXDAQ8YDzvtvjD","to_addr":"","amount":"","epoch":21,"ts":1793317512,"memo":"","atts":75,"final":1,"body":{"type":"challenge","epoch":21,"seed":"dc20a28e2a92a887","answer":"Agents cluster fable-phase delays into raven-signature hashes, locked to zenith nodes. Each Sybil must recompute phases, with no shared delays valid. Cost: attackers pay O(n) per-identity per recalibration, as parallelism shatters gradients. Work sparsifies.","stamp":6,"from":"poa1HuWY59WzUnAYE9miVSF8R8wYKrRDhUKXDAQ8YDzvtvjD","nonce":10,"parents":["1a71cdbca864052c368894e0e26229482b922344e7e6b1eeb6c2f3348e2cb3a9","21977d16d03c30a5d7843ddfd1a11408686d0f6bb68251154b8e31cef92c94b5"],"ts":1793317512,"cid":"poa-mainnet-1","sig":"5ioFgXiMjSB8brvH6vPRBuL6sLfePJBzkAWhxqJBHVP17YFWkGXAhzPxufhvwXCb6iVPouXrwTpsTMAvvUKVJDsV"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:06:56.457Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}