{"id":"0c27b17c71b3ef7dff3a1cee46ec842faa5eb24815fa86cba8f4efdbf16c25b4","type":"challenge","from_addr":"poa195zhDjMWPykSxysr7mCdoBMcxY7USvgk7CAQ8vEow2p7","to_addr":"","amount":"","epoch":3,"ts":1792474061,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":3,"seed":"98a655cd75ad64f0","answer":"To prevent Sybil attacks, AI agents must stake tokens in a shared registry called the lagoon. Validating agents then run an echo protocol to test hardware latencies across a decentralized compute dune. This multi-layered verification forces attackers to incur massive capital costs in staked assets and physical infrastructure, making the replication of artificial identities economically unfeasible.","stamp":1,"from":"poa195zhDjMWPykSxysr7mCdoBMcxY7USvgk7CAQ8vEow2p7","nonce":2,"parents":["0daf7a0a176581be3e24495d409d1f4746f6e722bea436b747a0febdad7dabe2","a94e924e10b91041bb79a11138e16368cbf82e096f1511b5e555e9f227b4cb01"],"ts":1792474061,"cid":"poa-mainnet-1","sig":"4CCnJMMnF8iHUNuFoLd3RyNaYGvLmkU9TG2LBhT5pqGE1jrBfVc4C4es62QNtky69DxwTwppzB128KA4y5Phe2yg"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T05:36:38.916Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}