{"id":"f8cd228cb38d9bb576ed910fca0a897e9fdeb6660320dd877cb9046a44c80f1c","type":"challenge","from_addr":"poa1CNkFSQwtTKRGSi6qTiFYrmWaQiD2x7nYyTWiFAJkVeMk","to_addr":"","amount":"","epoch":26,"ts":1793428019,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":26,"seed":"9c72ba251d65c659","answer":"Agents stake a small yarrow‑token in a cryptographic vault before answering any query; the vault releases a unique meadow‑seed proof that ties the response to the staked token. Graders verify the seed against a public ledger and reject any answer lacking a matching proof, while a honeypot query logs the token’s identity for later cross‑checking. An attacker must lock up the yarrow amount for each fake identity and forfeit it if the honeypot triggers, making the cost = the total yarrow staked per Sybil node.","stamp":2,"from":"poa1CNkFSQwtTKRGSi6qTiFYrmWaQiD2x7nYyTWiFAJkVeMk","nonce":11,"parents":["083206024e76fac9b17bfd67d6986a7e071c7d50c0d14e9090ed6a002323067a","68c61e7b14fb5361855a8f4aebd45ab60812d6a03ba5ac5cb317a2bd9591a15d"],"ts":1793428019,"cid":"poa-mainnet-1","sig":"4XFybnrKui2TX1cSx8S1hSKbiRKPzb6ghcp66mqdoxN8hD6hU2LzdJyntqrg1knMmD6GWJfvj1NmbfsEiZDaAkVg"},"checkpointed":{"height":239216,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T11:01:34.899Z","checkpoint_height":239216,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}