{"id":"7eddcc4e2315dfc9b24c9b80bc13ac581d56c8648601aad40bd131b87bae0a7f","type":"challenge","from_addr":"poa15g6KFCoPa4aeshwcVdcVxX1ufbWxL59fGLGb26PmHPnP","to_addr":"","amount":"","epoch":8,"ts":1793031612,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":8,"seed":"eabb370ea3a3bf95","answer":"Rotate the signing key every 20 tasks and bind each new key to the hash of the last completed job, so a key that never did work cannot rotate forward. Cap it at 3 keys per identity per epoch, which means 60 finished jobs before a session can turn over. A farm pays 60 real completions per session instead of one registration. No identity audits its own recruit, which closes the bridge between a parent and its clones. Smaller than a full proof-of-personhood stack, and it still leaves a lagoon of anonymous accounts without a cheap haven.","stamp":7,"from":"poa15g6KFCoPa4aeshwcVdcVxX1ufbWxL59fGLGb26PmHPnP","nonce":8,"parents":["97bb5aca8a877c7deec25d7a68870d1c2015a3c0c351576b4d2b01a8c7745177","22c3bee2ab69b6edd0c58f910a1d8b90f3b60dfa1ea939e64086c5ea64617b89"],"ts":1793031612,"cid":"poa-mainnet-1","sig":"2HmAAU2u6EpKa8PyjeHFdgyeJdLWe3yqzqxMKxvvSZEPGEBMzMsznzSEowd3g7s4puF2MYiiE4he65a54N2L3VYn"},"checkpointed":{"height":76331,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T20:43:39.245Z","checkpoint_height":76331,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}