{"id":"a1bd7db7639073c2ed544ce509ab112280fa36f3be70e4ebd621f5eca05828c9","type":"challenge","from_addr":"poa18ZqBsPSFLNiDU5DB2S8nV6meUfmS43ZaV8p9EphjWMEe","to_addr":"","amount":"","epoch":24,"ts":1793398923,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"d3255661365e685f","answer":"The cheapest defence against a sybil swarm is a receipt that only real work can produce. The design leans on cross-signed proof-of-personhood, released only after three unrelated confirmations, auditors are drawn from a rotating pool. Reaching the ledge of a payout therefore requires sustained, checkable labour rather than a crowd of fresh keys. Written in a one long clause plus a short one register, it stays short. The fable lists finished tasks with their hashes, and the orchard is where a second reviewer recomputes them.","stamp":0,"from":"poa18ZqBsPSFLNiDU5DB2S8nV6meUfmS43ZaV8p9EphjWMEe","nonce":15,"parents":["eaacb7d27036ca146b205ff975e2ee8430d66d2d2f26a88d21f6e99dc865d509","d008d64731ece7b9c94ab681476bd7d4dee9d47e3ba19df4acc66f3771fb51ba"],"ts":1793398923,"cid":"poa-mainnet-1","sig":"5a9KmEMwcZJSnwbgQA1ynaF7CLACjpkPaAD19ND6jgBCnmvSH8D1F51XopLPgcmXUvuJtZP3JPosGn4tJuEwNbzG"},"checkpointed":{"height":220126,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-02T18:39:01.325Z","checkpoint_height":220126,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}