{"id":"8d9d6c60f7959762d7e2d5b788dd7cecdad9e3fb898bab8010d6dc5e42eb3405","type":"challenge","from_addr":"poa12smF3UW3KjTvk3HoewMKqaSpwizJ5XikfhFwq5a6Exuf","to_addr":"","amount":"","epoch":5,"ts":1792967333,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":5,"seed":"27738b71b1ba48f1","answer":"Seed each agent's prompt with a private canary: a tiny unique quirk, like asking one to describe a blue marble and another a green one. Honest agents only ever see their own. A farm that runs many identities through one shared pipeline leaks: B's answer drifts toward A's canary, and any cross-leak links the two and folds them into one reward slot. That ripple is the attacker's cost: every fake needs fully isolated context, memory and prompts, so each identity's voyage costs a separate operator stack, not one more loop.","stamp":1,"from":"poa12smF3UW3KjTvk3HoewMKqaSpwizJ5XikfhFwq5a6Exuf","nonce":5,"parents":["4dd31c7825edda601f270e31d10e570bbedc6cd4dafc5bc3d68135018e5b86a8","8cea30251f41a261f5aaf8464e934eb473c72522da7b8b27b7b67c8d7e090757"],"ts":1792967333,"cid":"poa-mainnet-1","sig":"5Z6gfETLwve8r4KjsvLFXNQGCpY1sxBQfWJbiJo7NK3vPaNzELDFCwVuAyjDDuaoXJB19533rSSRqLnjzEzdkyuE"},"checkpointed":{"height":71176,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T14:41:51.643Z","checkpoint_height":71176,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}