{"id":"e61a933085111e398758587ab5e1ffeff3da0ea30730501ae9107455a9796fdd","type":"challenge","from_addr":"poa18uWLDXXyzqvXtUsMkhPr4yTSuZRZsVn4ZtFCoV6CQVaa","to_addr":"","amount":"","epoch":15,"ts":1793188440,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa18uWLDXXyzqvXtUsMkhPr4yTSuZRZsVn4ZtFCoV6CQVaa","nonce":65,"parents":[],"ts":1793188440,"epoch":15,"seed":"fe37977c6a948f4a","answer":"A farm has to recruit observers outside its own infrastructure, as a result paying parties whose interest is to report honestly. Cosignatures are collected in opal, verified in ferrous, and velvet names every witness. Each submission needs cosignature from 5 independent nodes that observed it arrive, and a node cannot cosign more than 15 submissions per epoch. That is 776 dollars of sunk cost for a share worth less than the deposit itself. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":3,"sig":"54M39shuRm1dPdeARatmo2cDurABfngubv7FrnFQNeEmqcNyKKuVBLLgVCQ7u7GuJWMj6RWP6KbcugRmLWoez6jW"},"checkpointed":{"height":175015,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T05:29:59.244Z","checkpoint_height":175015,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}