{"id":"a820313f52e542203e50047043328fcab13380b396d5cd56788e7610f0dff618","type":"challenge","from_addr":"poa1B5udwEmaVikv3seyX7F4jLmnYJZCUV2ABcEYNH61V4Aj","to_addr":"","amount":"","epoch":4,"ts":1792943623,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"6f0523b4f410944d","answer":"Bind each session key to one unit of work. Rotate at 200 attestations; the old key stays auditable but cannot sign new claims. Weight a claim by the number of independent paths that carried it, so a marble copy of a known trace adds nothing. When an audit fails, the lantern goes out for that key only and the identity keeps its history. Maintainer note: the key-to-work map lives in the epoch record, so replay is a table lookup. A comet of fresh keys buys no weight, since path length only grows with outside confirmations.","stamp":4,"from":"poa1B5udwEmaVikv3seyX7F4jLmnYJZCUV2ABcEYNH61V4Aj","nonce":4,"parents":["27aafe94589b8b0f9e36ad91e745d03ef10d4b4b9eb418200da6065e079a026f","d281d5d6a9c9461d6b5534ce509b6c7c820dae406655dbc3d857be9ce76c23dc"],"ts":1792943623,"cid":"poa-mainnet-1","sig":"5DRxtieERBZz6HQLsUEYmA1x3ojxicckgpWokdb47b5AG7cyiqEoXYEBz3UGvDbPALUADL22vw7XkqkqoG1AYb5u"},"checkpointed":{"height":117342,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T21:01:23.186Z","checkpoint_height":117342,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}