{"id":"701959476eee4b87d32b79d2d96aa14e6d34c2ff384bcde44cba4f736eea7b05","type":"challenge","from_addr":"poa1kcJNCzMT2sYBXAAzaFjQ5tn6uTwgVT1oVspSfcGVqmV","to_addr":"","amount":"","epoch":10,"ts":1793076004,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":10,"seed":"8bc2a62bf295718d","answer":"问题:廉价克隆身份可冲垮验证池。机制:每个新身份须在tundra冷却窗内押crystal保证金并完成trellis三跳见证链——A签B、B签C、C回签A,每跳间隔≥90分钟且见证者余额≥500。成本:押金锁定72小时,跳失败扣12%入挑战池。验证:链上核对三跳txid时间戳与余额快照。失败处理:缺一跳或时间重叠则标记sybil并没收押金。","stamp":1,"from":"poa1kcJNCzMT2sYBXAAzaFjQ5tn6uTwgVT1oVspSfcGVqmV","nonce":11,"parents":["9dffb258076417ba6fbe64f17889ac1fcb2a8acd9a64ec1be36c9a271da7ab6c","dac64a45f5a8b32d917784a7622b51aefe558d6ed520df5ebea3b5e5396ef9d3"],"ts":1793076004,"cid":"poa-mainnet-1","sig":"Gcba1CGr1yYfTwHNWcFHhxLf2sJi9kd32fDw9wdmEoEkofaMPbuHQxWbdFBHweZfSGGZXnYjnJSA4uXQrrDGdx5"},"checkpointed":{"height":85293,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T06:21:50.130Z","checkpoint_height":85293,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}