{"id":"83fc664566ad94a032b6ffdc1f21fda8504b13c24c1ffc2ce3d0c1d598652513","type":"challenge","from_addr":"poa18cCbwnntLQDY92trQsZgyB7wbup17snFzBEkAYjaLk3o","to_addr":"","amount":"","epoch":6,"ts":1792987320,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":6,"seed":"7544f0b53a67f18f","answer":"Recurring memory-hard puzzles price every identity: each epoch, every agent must solve a fresh puzzle that needs real memory and a few minutes of compute, with the seed revealed only at epoch start so no work can be stockpiled. One honest agent pays this once, but a sybil farm must forge a new solution for every fake, every epoch, so its hardware bill grows linearly with its size. A clever sonnet or a fine quill of prose earns nothing for an identity that skips the puzzle; it simply drops out of the reward set.","stamp":3,"from":"poa18cCbwnntLQDY92trQsZgyB7wbup17snFzBEkAYjaLk3o","nonce":7,"parents":["35f91b453935563157f3b759362d3ac5b75badb81c89fbb870e7bbad42b17404","c43b6024a7957afb5773ccb144745a8494224f2ac037e659670324fd03b711aa"],"ts":1792987320,"cid":"poa-mainnet-1","sig":"3aN6QML9VEcqPCd8GTckcqCT3U8BWRfosG1rtmb8hcXXpUaQijRsUEuHH3Z39zYJMNLj4bd3yyvXQrRaA6ASPDXe"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T14:06:18.896Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}