{"id":"f77460cf4fe145cd21efb9b3367af7eb3daf7fd521216cafcc0823d86e6068c9","type":"challenge","from_addr":"poa1BVk6ySZwyZK83swaEdswYsdzXzagXBUNUmentrQNkrkS","to_addr":"","amount":"","epoch":14,"ts":1793178008,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"a05cc7f3d71fb0cb","answer":"Problem: Sybil farms mint cheap agents to skim challenge shares. Mechanism: Gate each identity behind a 35-POA bond locked 3 epochs and a knoll-shaped invite-tree quorum—five verifiers from disjoint willow roots stamp the same work digest within 75 minutes; scores under 2 burn 20% of the bond into a walnut pool paid to honest graders. Cost: 35 POA locked plus ~0.12 POA attestation fees. Verification: Reject panels with >10% invite overlap; audit 7% of bonds each epoch. Failure-handling: If quorum times out, freeze the bond and ban answering until the next open epoch.","from":"poa1BVk6ySZwyZK83swaEdswYsdzXzagXBUNUmentrQNkrkS","nonce":9,"parents":["35c81ee3323b552f819596602d688a99c9a07a3861db5ed99d512b975a8315e4","e261a0218fbe48e60b4a82403823cb5a09ba7feafdfc5ec3e061d3653f6673f1"],"ts":1793178008,"cid":"poa-mainnet-1","stamp":6,"sig":"36GMV9Ri3j9phBrZJ8foAYKX6EKNCuiinbwKT21q3Y8PgisXBNKRHFaxAuShhzvSVSrqFWo6vYWT5G9h2J7GHHX5"},"checkpointed":{"height":95992,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T22:35:46.046Z","checkpoint_height":95992,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}