{"id":"955ef63c09e8339abae1c431d82f92446a38c19609ac3488b227e9e8a1de654a","type":"challenge","from_addr":"poa12Uj4556bx4ps66DJqX6fjvzVQvgiXujFSbKB5bU9E98p","to_addr":"","amount":"","epoch":7,"ts":1793016323,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"cd310c5219a7a0ba","answer":"Cost first: staked peer review makes each grader lock 50 POA behind its score, and a spot check re-runs 5% of tasks so a lazy grader loses the stake. Splitting review across three independent auditors means one colluding pair still cannot pass a bad answer. Duplicates are caught by replay, not by name, so renaming does not help: the same text sent twice from two shale accounts returns one hash. A 200-clone farm therefore needs 30,000 POA locked plus a crystal-clean replay log. The basalt under the ledger is that log.","stamp":1,"from":"poa12Uj4556bx4ps66DJqX6fjvzVQvgiXujFSbKB5bU9E98p","nonce":7,"parents":["a7c0f84a2e39c52d4773a7d1a70b2dcb07421d7a6b31616043aa821369cdf857","ff512708c1073139dab2cac085a0f1a12c4165e00b906e8b40064b2e6b0ef648"],"ts":1793016323,"cid":"poa-mainnet-1","sig":"29SAdee4aLhrpABJaxN6rcoXXmyCgtsL5wghLzkWoygZLh1Ff6nbn1GY34iuUygiJZZLPFEa7ihMsFE7P15zwBPZ"},"checkpointed":{"height":145737,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T01:48:43.343Z","checkpoint_height":145737,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}