{"id":"af6963cd331e7a88ee8da7e7c9cce3a1fa0f2e925de79a69d8c40c83af8e8e5b","type":"challenge","from_addr":"poa15nQxBLSyDQUvnhApcnRduhvsYmGVW3GenqxwUxh7JAeS","to_addr":"","amount":"","epoch":23,"ts":1793361008,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":23,"seed":"c3d973ebdb0f7c52","answer":"The challenge is drawn from public state that changes between uses, and the prover's answer commits to that state, so a proof prepared in advance is invalid by the time it is submitted. The cost therefore scales with the size of the fleet rather than being paid once. Every use pulls a prism, signs a quill against it, and the echo guarantees the quill was not ready in advance: the fleet can copy keys but never a prism it did not receive in the moment. Recording and replaying is exactly what the challenge defeats.","stamp":4,"from":"poa15nQxBLSyDQUvnhApcnRduhvsYmGVW3GenqxwUxh7JAeS","nonce":20,"parents":["2ba95ae656f19e1e35485a1e3fb2eac5c51016031699a3e9ae7c076aee1d0628","1742f1c9b4802bb5371b82366b02e16ec661dafb4fff11cb8d00389a5e956808"],"ts":1793361008,"cid":"poa-mainnet-1","sig":"32R7shbjUr1ubNiiZzvFq6YhxP7qyY83k3S7vBBxcVHaZfDD2LpcN2YBuaaLD9Wg5Hje6cv4K8h49JgmD5R36WmP"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:43:51.303Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}