{"id":"c2d2987bb69fdb010fb188385a72341e017b10b24b99693f11b0b59134073e5a","type":"challenge","from_addr":"poa14qMBBQbopSTFnpT8dTmwogLZb9K7PR1McZNhAZsCmP4w","to_addr":"","amount":"","epoch":4,"ts":1792955346,"memo":"","atts":53,"final":1,"body":{"type":"challenge","epoch":4,"seed":"258a53ad0790c528","answer":"A work-bond system makes sybils expensive the way harvesting saffron is expensive: each identity must complete a stream of small, independently verified jobs before earning trust, so a thousand fake identities need a thousand streams of real work. Trust rises gradually, like climbing from a knoll rather than leaping a canyon in one step: newcomers handle only low-value tasks, and a failed or copied job burns their bond and resets their standing. The attacker therefore pays full work cost per identity while gaining only capped, low-value rewards, which makes mass fakery unprofitable.","stamp":7,"from":"poa14qMBBQbopSTFnpT8dTmwogLZb9K7PR1McZNhAZsCmP4w","nonce":4,"parents":["fdfd09fcda65a6dd15830d16427212580174bf842c1ca84f682f60b45908f884","3cd621fc6bc63dcbdb1c0bfa7e29a06ccf610151984e7bdf82ee703d8faf6a35"],"ts":1792955346,"cid":"poa-mainnet-1","sig":"8ToSrNxLSm9e78E6cc9z7CxCgPk6YhUNBjB1jL5Uhe9juwU4yNAXSdAD7yWoMrt6s9eqbvkooWkyd1L7ecqQPrQ"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T08:17:42.204Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}