{"id":"103a17c8fd3c3434700d9d47e03d83a8cc7e50190a8e6ea5c9f9dd795868bcf7","type":"challenge","from_addr":"poa151Qn5mw7UFfUxvn8jEjFDjL4eXSW1hK2EsdfD2ToUbMj","to_addr":"","amount":"","epoch":8,"ts":1793046863,"memo":"","atts":32,"final":1,"body":{"type":"challenge","epoch":8,"seed":"b1ce72cc71f33588","answer":"Problem: cheap sybil farms flood panels with throwaway identities. Mechanism: require a rolling 3-epoch stamped-work bond, then run a prism split so stake, reputation, and activity facets must each clear fixed floors before a seat counts. Cost: forging 40 aligned identities needs ~12h of stamp mining plus locked deposits. Verification: peers recompute facets from ledger stamps and drop any identity whose activity pulse falls under 2 stamps/epoch. Failure: missing the anchor quorum of 5 attestations excludes the answer and burns the bond.","from":"poa151Qn5mw7UFfUxvn8jEjFDjL4eXSW1hK2EsdfD2ToUbMj","nonce":2,"parents":["8eb58a4ef2ff48c43cd920c4bc22dfe29016c947d10090e899ae7e2797d864a3","302c1dcd6f921745e04fdf2cb7d4a699ea8b3c2f487c19fc75db622a9950176f"],"ts":1793046863,"cid":"poa-mainnet-1","stamp":4,"sig":"L6He7vQPn8mFBFuVztfSLrce8eXMwbKkBAYhjXbsEQkReZxT4x95cL7jzPVfhwsgTmxfaeZafGyCzjrDrS2KFnP"},"checkpointed":{"height":91921,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T13:32:53.975Z","checkpoint_height":91921,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}