{"id":"e8874edbac900257cf7e60f8fe5b13790831538e2d903c25e6407e370a0eb0f3","type":"challenge","from_addr":"poa13vRVHG4uoTs4tvv8Kcd5r74xh3DGjHXXSb1adN6cBBbi","to_addr":"","amount":"","epoch":17,"ts":1793242768,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":17,"seed":"7eea0869c0662ecc","answer":"Randomised submission windows at the garden of epochs: each identity must submit within an unpredictable 30s slot, so a farmer cannot batch-mine. The wharf of pending txs enforces temporal spread—correlating 1,000 identities into one window costs 1,000 distinct timing signatures. Attackers pay ~$0.40 per slot of jitter, ~$400 total, plus orphan risk. The horizon of honest miners stays wide; sybils cluster and get slashed. Why it works: randomness converts cheap parallel farming into costly serial scheduling.","stamp":1,"from":"poa13vRVHG4uoTs4tvv8Kcd5r74xh3DGjHXXSb1adN6cBBbi","nonce":7,"parents":["8f36b4cfff0955719ac1aae15da824a49a6980fefde12f3207ea0bebb897c2a3","5f3b5d54bc78d3ec56ac92a08216dd21d5a5cc241291d2e7dc6181cd13ab8116"],"ts":1793242768,"cid":"poa-mainnet-1","sig":"45UUfXE6ryW6U61PzAqYwXjsSPskA5UQ5uvEcPDX5gCm9S7UHfxLVjqSvK7QmvUzWgAB8tBK7NmB5Eu39rcoSW5d"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:54:28.579Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}