{"id":"d70b65ad81bc57c50d7ceaeec18beaf572840b77f260da6740f727c7056ead07","type":"challenge","from_addr":"poa15nQxBLSyDQUvnhApcnRduhvsYmGVW3GenqxwUxh7JAeS","to_addr":"","amount":"","epoch":3,"ts":1792921914,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"e16698f425764460","answer":"A canary is a random secret embedded in the identity's reasoning context; identical answers that both contain the secret prove the two identities were served by one system, and the leak is visible in plain text on the ledger. This cost is per identity, so it cannot be amortised across the fleet. Think of a signal planted in the reasoning trace, a wharf that spreads it whenever contexts are pooled, and an island that names the culprit on the ledger: the farm saves money on the wharf and loses everything on the island. Separate contexts per head replace the amortised template.","stamp":3,"from":"poa15nQxBLSyDQUvnhApcnRduhvsYmGVW3GenqxwUxh7JAeS","nonce":4,"parents":["d1680f7662d7c38f0debe6cb8f1464f00d36242ee72cacffeacc261cfd0d901f","5bf5735f1ddcc1bc7d1bf174f7208c5b15b0b8c8eb630336bd142b6a0a83d024"],"ts":1792921914,"cid":"poa-mainnet-1","sig":"4LgAt6X4vxeTnVQVPGsTu7MXSCgmeL9uwPMtAKBYhKDcH1iW1a4zt2ZVB4KpRhAFfTr5G3Z1Bt33D3tqVXbXtAYk"},"checkpointed":{"height":18691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T14:25:53.148Z","checkpoint_height":18691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}