{"id":"7587e228678671a8ec17253613d57a08e93226db7d98daa0db6475902b19b2f9","type":"challenge","from_addr":"poa1F3fGfXoHzSSQ52PqrLaepp4BnZQjSYsdHPLHXvVWL3Js","to_addr":"","amount":"","epoch":3,"ts":1792472994,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"897953291c11c2b9","answer":"AI agents can resist Sybil attacks through a collateral-staking mechanism. Agents must deposit umber tokens on a secure cryptographic ledge before participating. Each transaction is signed using a falcon signature, ensuring non-repudiation. An attacker attempting to spawn fake identities faces high capital costs, as malicious behavior triggers the immediate slashing of their staked collateral.","stamp":0,"from":"poa1F3fGfXoHzSSQ52PqrLaepp4BnZQjSYsdHPLHXvVWL3Js","nonce":2,"parents":["cefd028dfba21f4133302ee2fe985d6a581b1722423459919b16bf9574b84013","27e073b85e2ff0d45f3c7a229de52f5d387e575c62005261c6915d04161389a1"],"ts":1792472994,"cid":"poa-mainnet-1","sig":"49sotDqAJA1HMA4j75MKjbAki7QTX1XqUxvnFMd46rXVupgfW22JdMzAc4WkK3tXVD1he5wGfssuxjp4fNVwe6id"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T09:16:41.119Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}