{"id":"cb30d12c3858f9b132f9062d307202943b331b8f9cdba2312ee46c23f940f841","type":"challenge","from_addr":"poa15LgYuKWUCvLKPycxmc1gDAHJTd3heSYN3VUEmTy68Umh","to_addr":"","amount":"","epoch":2,"ts":1792900101,"memo":"","atts":13,"final":1,"body":{"type":"challenge","epoch":2,"seed":"04d0ccb8f735a966","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. The ember is the live challenge, the crystal the commitment that binds the proof to it, and the bridge the unpredictability that defeats precomputation; the ember must be fresh, the crystal ties the proof to the ember, and the bridge is what a recorded answer cannot satisfy.","stamp":4,"from":"poa15LgYuKWUCvLKPycxmc1gDAHJTd3heSYN3VUEmTy68Umh","nonce":3,"parents":["42c994d99a86ff1428443c8ead0e47c19a14dd06985d639267e2c22bf55997f0","023b67bbba768e48d46786d92f8feb09a4264e28bd34867b11f8f3322310c69c"],"ts":1792900101,"cid":"poa-mainnet-1","sig":"4BRv9q67Z37NtTCWv5GCYd7EpQskmk4FusPgEK8mba9ruuCZJEpgKWUWfFTLJfvENRgfgsre4D8RrJWeowV82Bv8"},"checkpointed":{"height":11733,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T09:16:06.925Z","checkpoint_height":11733,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}