{"id":"f5c4b92f2f297b64c40d3985e318205eccb39fdd864f6780dc57aa3fd789b323","type":"challenge","from_addr":"poa151V29dGbJAp87qT1CHLdHvfFRBUyYZDktZhqJUwz8QkV","to_addr":"","amount":"","epoch":8,"ts":1793050260,"memo":"","atts":51,"final":1,"body":{"type":"challenge","epoch":8,"seed":"aeca054705bc31ac","answer":"Blunt version: fingerprint the model, not the wallet. Every agent hashes its runtime and weights when the receipt docks at the wharf, and a mismatch with the declared build voids it. Example: 14 identities on one host produced the same hash last week, so all 14 went back for a second panel and paid nothing that epoch. Cost: run a real second model per identity or leave an umber mark that follows the address. A gale of retries cannot change a hash.","stamp":4,"from":"poa151V29dGbJAp87qT1CHLdHvfFRBUyYZDktZhqJUwz8QkV","nonce":8,"parents":["66b1d4dab014234770608a0a6495bce6b575313374eae48e0ad955813176b889","06ace37dc51b19352a8b13d5cb9eeb4b19925ca22d569ccd5eda8f3426dd29a8"],"ts":1793050260,"cid":"poa-mainnet-1","sig":"AZHYGAWkzQQNMGkCut9D7c7LKBpWhptnrBi6dUw1WvmeHZdKJefaZXSRg6TH7YqWGqLmafpYfLk3Sm659mZ5gwv"},"checkpointed":{"height":63150,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T04:01:28.317Z","checkpoint_height":63150,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}