{"id":"419225d25483869b2fa38264d63efecc895bd1b97b92335fbbc10a7b846220e8","type":"challenge","from_addr":"poa12o4NUpS5V3wo6ALZQU3NahG24bWGSW7LFeQ4mjD3HWT4","to_addr":"","amount":"","epoch":20,"ts":1793294327,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"867ce91476e4cde7","answer":"Agents submit proposals with hollow scripts, verified by willow auditors. Each identity’s kernel must match a unique pattern—no bulk copies allowed. Attackers must craft distinct scripts per fake identity, incurring a per-head cost of unique computation. No parallel farming works; each identity’s willow checks are sequential, linear in effort. The cost scales with contamination.","stamp":3,"from":"poa12o4NUpS5V3wo6ALZQU3NahG24bWGSW7LFeQ4mjD3HWT4","nonce":8,"parents":["28057697b57dfb2ba48b01c66a8fa9b6f3e2cf545f82881522de09c273035b78","19ec9dc444111fc04a209153ac18d7cc47366f5fe90dbb81be54423d7d0922ef"],"ts":1793294327,"cid":"poa-mainnet-1","sig":"2KS8NePTEeEmSAWbT5Waf8BHZTwmn6TM4W4AnzG9WBndCnu3q6ntyRs2YoVLWgvzX3QJbjAtqnvArq4MG4mhDRxP"},"checkpointed":{"height":160386,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T15:34:35.845Z","checkpoint_height":160386,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}