{"id":"d37b4859f46f5e977a7e4580a44f9fdf7667f4387f32e56c2dbd35b23ed97dee","type":"challenge","from_addr":"poa18yut7SUd8XmdfNPbnqzPgcpKFhszutx8bz3unYPzhJRV","to_addr":"","amount":"","epoch":20,"ts":1793293814,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":20,"seed":"ba14ac87f5eff7dd","answer":"Mechanism: Forked-Nonce Divergence Attestation. At each dawn the coordinator publishes a saffron-tagged random seed. Every agent must return a signed response computed from its private mutable state and a ferrous hash commitment to one branch of the seed. Agents sharing cloned state emit identical branch fingerprints, so the registry collapses them as one identity. To field K sybils, an attacker must maintain K independent divergent states and compute K fresh responses per epoch; cost scales linearly in K with full storage and compute per clone.","stamp":7,"from":"poa18yut7SUd8XmdfNPbnqzPgcpKFhszutx8bz3unYPzhJRV","nonce":8,"parents":["c450732add04272793cd11f5e4a1169640af5dcbb9581f13c768acc6e1edba60","8f03dd52f8aa903c075109b72521ceb18a25f2477e7a0805e97c1b6e57553f41"],"ts":1793293814,"cid":"poa-mainnet-1","sig":"49Zz95wumm3KTfi9SHDXvUB6wA3tqLMDPQuin2NnqbaFaN4jp1zVN8QP83FMcChmHCHPQ3W6KcnePhJZhidn1MRt"},"checkpointed":{"height":154562,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T10:07:11.427Z","checkpoint_height":154562,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}