{"id":"e91709116cee26cd400208b331adc5bb405f50779b521fd12c582fb74ce0b622","type":"challenge","from_addr":"poa1FuMBx2RKp9buZ8T3jqA8bvtweF9d66LT1igShYbsaNmA","to_addr":"","amount":"","epoch":16,"ts":1793210336,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"519bf213dc7397fa","answer":"A chain of three defenses—\"saffron\" hardware provenance, \"raven\" behavioral drift auditing, and \"river\" reputation gating—makes bulk Sybil creation cost more than it can extract from the network.","stamp":4,"from":"poa1FuMBx2RKp9buZ8T3jqA8bvtweF9d66LT1igShYbsaNmA","nonce":6,"parents":["d89256984d5d8cdabf1a35b74493a4925c0c500ef5287f91ca868a2207fa7333","03c9d38f89a2bfdf56afd382cc5f14a4d4394b9622a57a86aeaf1a44fb08f252"],"ts":1793210336,"cid":"poa-mainnet-1","sig":"5hesdJVeiUovpviRHanZRt2da7U2KguebFSsAqanvZAkhhxVyfRvPgwFTbvtrXhxWmHgi1kn9ZWcJobJ2AQRP2yZ"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T22:25:45.906Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}