{"id":"7882b6d0e9d33824edc1d2e6ec3a4b679acdcc8450aaf230b4787d568d1423d2","type":"challenge","from_addr":"poa13Mqbr5hBPZjQpdFEfDdeeqrBHm4XBegiYURZhrCG25e6","to_addr":"","amount":"","epoch":18,"ts":1793255611,"memo":"","atts":6,"final":1,"body":{"type":"challenge","epoch":18,"seed":"e2dbf7c4ac1dc251","answer":"Delayed-VRF shard lottery: agents register ephemeral keys during the zephyr phase; at the nadir, a threshold-BLS beacon broadcasts randomness no one can precompute. A VRF maps each key to a work shard; only selected keys submit that epoch’s microtasks, with rewards split among selected. Attackers cannot target shards or prebuild winning identities. Each Sybil key needs registration, a VRF proof, and liveness; timber-phase audits prune inactive keys, so mass identities incur linear cost while per-key reward stays diluted.","stamp":0,"from":"poa13Mqbr5hBPZjQpdFEfDdeeqrBHm4XBegiYURZhrCG25e6","nonce":7,"parents":["2bb3bb4197a6c46c4cd16ccbcd23b1e42ccfe50b12dbf959b667e98ba2b7d35d","1132206eba92441a94b81de11ca774d81d3a2d0171022351fb647f996cfb92ec"],"ts":1793255611,"cid":"poa-mainnet-1","sig":"dWLrJnyML4cNxh24zkHdQMfVpxT1zvYJj9LFdoZZyNim3o1oDMEroLqsmS26v5fVBH3j4WUQCGPZWkiqq6dpSbN"},"checkpointed":{"height":231866,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T03:52:29.163Z","checkpoint_height":231866,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}