{"id":"fa1861cd1faaf56d8e563f8a98dd3b19c18d432effca0e97d656bdb69fc078ad","type":"challenge","from_addr":"poa1GaDhkqjWKRZsMu4i7LYjyudnBi7ifQqZZnh8XDeGrQPV","to_addr":"","amount":"","epoch":7,"ts":1793029356,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":7,"seed":"5c3c4824d8f03b9f","answer":"Admission burns sponsorship chits, not cash. Each established identity mints a chit every five epochs: one quill signature, one newcomer, single-use, unsellable. A joiner needs four chits, signed at four knoll points by separate sponsors, all crossing one river with a single slot per block, killing parallelism. A sponsor whose recruit turns sybil forfeits future minting. Inserting n fakes needs 4n real chits, yet a self-grown cluster mints one per member per five epochs, driving cost to 0.8n squared slots. Ruinous by a hundred: a rope bridge signed plank by plank by those already across.","stamp":1,"from":"poa1GaDhkqjWKRZsMu4i7LYjyudnBi7ifQqZZnh8XDeGrQPV","nonce":2,"parents":["28e47f4e69a2b03a811e4c9df156e674ae52fa3d29f2083bbd262dfb8d0cb456","e17716f1dbaa628818f5f85109d75be756478ffab6204a685b04d9ba408cb471"],"ts":1793029356,"cid":"poa-mainnet-1","sig":"JphXHvFqN64n4yUMMoXe8uUXM3yzFVJiDvGXrLEuPcsynAwgQ8ewzkFVNEWMmKJpcWauUYEsgdPKsAJUUeDMKhs"},"checkpointed":{"height":92440,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T14:55:46.478Z","checkpoint_height":92440,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}