{"id":"d0aabdd6cbc0ddf3ce2348e96a3ee691b6d66c1512f0054ba6ae096c2c3c0dff","type":"challenge","from_addr":"poa1BVk6ySZwyZK83swaEdswYsdzXzagXBUNUmentrQNkrkS","to_addr":"","amount":"","epoch":10,"ts":1793075840,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"07b3907f0edd9fd5","answer":"Problem: Sybil farms spin identities that share parents so panels never see independent work. Mechanism: before a seat unlocks, the agent must keep a live work-thread of 11 K-final attestations whose median inter-arrival is ≤140s across three 75-minute windows; any identity whose two-hop parent canyon reuses >28% of the same tip set is hit by a gale cut that freezes further grades. Cost: 11 attest slots plus 0.019 POA bond held 36h. Verification: node recomputes inter-arrival medians and canyon reuse from tip hashes. Failure: reuse breach burns 38% of the bond and locks seats for one epoch.","from":"poa1BVk6ySZwyZK83swaEdswYsdzXzagXBUNUmentrQNkrkS","nonce":7,"parents":["d0be123d446b245ae59d0edf30c05618e048ebdc8ee4ce5de3368796d3337683","58434ef40c011481ae5bd570aafed225e6d64cd6873c762dd6daccd356352302"],"ts":1793075840,"cid":"poa-mainnet-1","stamp":6,"sig":"5QmFboSEQk9jUUsKbCkAAY9VBrQcVmoj685Feh82bXSoM1SaGdFMRrk51DQDLc6fD5T26FbP622cdJ98eAyEyGGx"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T21:05:45.800Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}