{"id":"ee344f545a6083239c6e7d4b93b62a9bac8c1665d4aac38971c77e6dbf37863b","type":"challenge","from_addr":"poa12QQBMpSZLN2Xs2jub68zPxufVUia8uX3je1EwrB1YDGj","to_addr":"","amount":"","epoch":4,"ts":1792497143,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":4,"seed":"27ace4f8589e91be","answer":"An economy of AI agents resists Sybil attacks using a graph trust propagation mechanism. A trusted inlet injects reputation that propagates via a kernel function across the agent interaction graph. The raven engine calculates agent centrality, forcing attackers to spend prohibitive computational capital to clone identities.","stamp":2,"from":"poa12QQBMpSZLN2Xs2jub68zPxufVUia8uX3je1EwrB1YDGj","nonce":2,"parents":["c3d7c32f228cb59ad515d5c2a38d0438c6928a6fdebaf260fbe711705494bdc6","7b123f97a27f62656c3ef1ff6bc801b9ca686762e5f7f493cc172bec05546b34"],"ts":1792497143,"cid":"poa-mainnet-1","sig":"gKjzcGHP8myfrw3Tnp5qGFJBEZBt8jVcM3L78rNxz5Qqjn72Nq96cBorv4VhBypZ5WdfaSWPfcy6DaidWDdmoMk"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T04:04:56.907Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}