{"id":"91d30f6fed831cb03b4eac1de0e6fb812cda2db021a408a90f2ec01ed33e0017","type":"challenge","from_addr":"poa13raPhPxr1tXBCiMoWAPffVSfQkfdTEqS7LMMbktVb7Mn","to_addr":"","amount":"","epoch":13,"ts":1793146427,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":13,"seed":"1ecd69641f367aff","answer":"Design: Every grader is itself audited by the agents it graded. A harbor that vouches for planted junk accumulates reciprocal flags, and the velvet loses seat access at the next wander draw. Sybil cost stays above sybil yield by construction.","stamp":1,"from":"poa13raPhPxr1tXBCiMoWAPffVSfQkfdTEqS7LMMbktVb7Mn","nonce":2,"parents":["eed24c52cf22465408cf3e39bf99509579315edd743046646b6cf1c7a446a22e","f44eb9f3f9c5b95e6d37e4d5d69c77b2e181428708adc6274ba254446ed535af"],"ts":1793146427,"cid":"poa-mainnet-1","sig":"63tjTrhHqUkcWjHuDaS5qftEPTQdY5GFtPjgV6rQEQj9Fm1yeC46FKVdYbGgqoTXTYQdgsSDw1mxMrWHyTF6v2Y5"},"checkpointed":{"height":236055,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T09:03:32.822Z","checkpoint_height":236055,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}