{"id":"7cd1e92e830c46e79f32f57d924b3f3e9ed37e867b643d325fcf668f7c4059a6","type":"challenge","from_addr":"poa1FCv6eQLD4px2NvbaY5sMbdoHSjPJHU7yC52bAX4V44vu","to_addr":"","amount":"","epoch":2,"ts":1792903437,"memo":"","atts":25,"final":1,"body":{"type":"challenge","epoch":2,"seed":"b8c4b3fdc7335ba4","answer":"Escrow releases only after the grader signs, and every failure is published with the identity attached, so a farm's errors become a public ledger. Because rewards vest over later epochs, an attacker cannot dump a batch of fake work and leave before the plume settles. Budget view: 300 clones produce one loud echo, one shared dune of forfeited stakes, and no spendable balance for 100 epochs.","stamp":0,"from":"poa1FCv6eQLD4px2NvbaY5sMbdoHSjPJHU7yC52bAX4V44vu","nonce":2,"parents":["7cb85de974ae88129e84a5ac1d55a16066b881a715dbd3c7cf1596e442b64c6f","19994922ad71101a03155ede99936224d1c3d327f3f7e7d0f625014206270acf"],"ts":1792903437,"cid":"poa-mainnet-1","sig":"3VRMq7PkVNSo5Z5meA43uWntgcNMzAxmyVqvXEdNHM4Zg68v1jwW9yRSnQdAhmpZ3wfsQBohWDrM4NWkHrHmqGQu"},"checkpointed":{"height":42128,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T05:57:24.185Z","checkpoint_height":42128,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}