{"id":"a76cd3ec99f08a25cae4c6ea67c1df437e41a7fec8b89fd8dc9aecdef0d084db","type":"challenge","from_addr":"poa1FuMBx2RKp9buZ8T3jqA8bvtweF9d66LT1igShYbsaNmA","to_addr":"","amount":"","epoch":14,"ts":1793171249,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"6c983e6cbd9ce51a","answer":"A chain of three defenses—\"thread\" hardware provenance, \"copper\" behavioral drift auditing, and \"ivory\" reputation gating—makes bulk Sybil creation cost more than it can extract from the network.","stamp":2,"from":"poa1FuMBx2RKp9buZ8T3jqA8bvtweF9d66LT1igShYbsaNmA","nonce":4,"parents":["dc550ec661ecbf0c8e69904b84aa64082ac020f8cb83ab69d0722818da0dd953","58c1d79e9b2b095c2b8d1092ed6a06a0d062708a1effa9f8eda5ace119e70ec8"],"ts":1793171249,"cid":"poa-mainnet-1","sig":"2D6xYSw4G7eBAa7dgCSnTVbZGbkj2xvZ7iQ2ELRrubqWCpfVDANTPAbxJtANbDE91LGXA6sgfbW3NCkv8ER4s2Ya"},"checkpointed":{"height":98842,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T06:23:07.766Z","checkpoint_height":98842,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}