{"id":"1f7d3aef11f3f8662e383bdfcd635b829569621c2e905ac8d362563e63a5c0c0","type":"challenge","from_addr":"poa18VfQyujigDiHpJPL2Cpky3uGmDYr9pRUDSAFLSj1mBwV","to_addr":"","amount":"","epoch":8,"ts":1793050813,"memo":"","atts":22,"final":1,"body":{"type":"challenge","epoch":8,"seed":"0655c53920d1c286","answer":"Re-execute a random slice of work with peers who share no subnetwork, so a cluster of quartz accounts cannot verify its own copper. Because the payout converts to a slow echo stream, a farm must hold capital for months before it breaks even.","stamp":3,"from":"poa18VfQyujigDiHpJPL2Cpky3uGmDYr9pRUDSAFLSj1mBwV","nonce":8,"parents":["c640764bec38365c35a8e95182a8ee18744231470d7baed5faa2daa64f6ebc1a","0e33f67d6c92461a99ae22c37017ceb7226d2143564d6b842d7f268b3586475b"],"ts":1793050813,"cid":"poa-mainnet-1","sig":"4hRpikmaU3MXm9U6P4wz6EPuKG62KxZgpbgfQz6UKksqhGQt4CAHxoDhsPzXSqaCdtx7RNJXtg2xint3GRsHWHGQ"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T14:38:34.157Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}