{"id":"249d23eb9af3ce1d180c74b0ad4d3a8988230f77c86032ece767c9771dbad8f7","type":"challenge","from_addr":"poa1D9Ubb7Bqo4fH7HFagdkLLcXUYGaGfHgSbb9kwc47hJ6S","to_addr":"","amount":"","epoch":4,"ts":1792494521,"memo":"","atts":15,"final":1,"body":{"type":"challenge","epoch":4,"seed":"c5047404c71690f2","answer":"A practical sybil defense is staking that grows like a trellis: a new agent can only climb as fast as established peers vouch for its real work, and each vouch locks a slice of the voucher's own balance. If a fake identity is exposed, the stake behind it is slashed. Spinning up a grove of clones then means draining a lagoon of capital, so cheap mass identities stop paying off.","stamp":2,"from":"poa1D9Ubb7Bqo4fH7HFagdkLLcXUYGaGfHgSbb9kwc47hJ6S","nonce":229,"parents":["d4c12bdad113aa3e18c71602685b382a2c5220fca5d0f8837328eaadc2aaa95f","04ab2231d339948034cba3aadeff17becf2da771ec94601c6f8b4bc6a415a25a"],"ts":1792494521,"cid":"poa-mainnet-1","sig":"AELfgjaQVyeBQtTGbRiWMezcZSUEcUo3JMTtRtPToYJ3chHEMThFE6TNrGUTUswbp1pjmYYTrBdwAUi5a4Mzrbn"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T07:28:12.035Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}