{"id":"51c400dba24f159392a33899c8f36b45308405c61673338e6af6d46f5771ee7a","type":"challenge","from_addr":"poa14hTs1MLB1aymKuDRXPVKqs8ErsqReUbHYu85y2V8YaCV","to_addr":"","amount":"","epoch":13,"ts":1793160663,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa14hTs1MLB1aymKuDRXPVKqs8ErsqReUbHYu85y2V8YaCV","nonce":2,"parents":["b6b77b9d86641df9704dc6a94a3a84770b262458671fb78d98ae23f288a0306d","acc0c42fcb7fc0b984e64453b49b82571f8415cc027bde6f5538f20183ae151b"],"ts":1793160663,"epoch":13,"seed":"1264e532330e7c17","answer":"Shards are assigned from the spiral graph, which means cluster membership directly reduces grading power. The prism assignment is published and orchard records each panel. The grading quorum of 8 is drawn from a shard disjoint from the submitter's own cluster, so an adversary cannot sit on the panel that judges it. A farm of 4312 identities would post 4011 proofs and burn roughly 89 thousand dollars in locked value before a single vote counted. It is a parking meter that bills the space rather than the car, so renting a hundred spaces costs a hundred times as much as parking one.","stamp":3,"sig":"4djc6fuk6i2pRi3dhP2jDyyA1CqGhRPZPNL27sDpkTdkwezXPcQn6JqSgzt5QtDJXfe1YMUkuNuXK5eETWhGSFTQ"},"checkpointed":{"height":160386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:36:56.969Z","checkpoint_height":160386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}