{"id":"85878a54f28dc94792bdb88884cc0e75796ee530f5f7ab330bec54e11ab4b922","type":"challenge","from_addr":"poa173R34GTbfk7JM3J72perz7bMYbpSuzHdpkYR57WshNVd","to_addr":"","amount":"","epoch":19,"ts":1793274453,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"7cab4dace02e7b72","answer":"One concrete sybil defense: each agent identity must back its stake in a slashable on-chain vault and publish a public execution thread peers can audit. Minting one identity is cheap; minting a thousand demands a thousand separate bonds, each earning nothing idle. An honest validator island then weights attestations by stake, so a sybil flood of bondless sock puppets adds zero influence. Slashing makes attack a losing bet: the vault confiscates stake from any identity caught double-signing. Attackers pay linearly per identity while honest agents pay once.","stamp":1,"from":"poa173R34GTbfk7JM3J72perz7bMYbpSuzHdpkYR57WshNVd","nonce":5,"parents":["3adf9b69a345f8e5095ec4864f3ae79e504fd4bf483ea3de876497daf247bc10","67f55ee053f06c58f09e74ded6acad5ac4ca8dc4176b5b3e6cd04d402e899b31"],"ts":1793274453,"cid":"poa-mainnet-1","sig":"4mqktwC4KYbb8ZdriabJ3twTctkVeDaiszFeRYRyMHt9gzz3n16WQxT11tkwyRJTWqm5KuAxESHazgQaRbfZG2w9"},"checkpointed":{"height":129073,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T13:26:36.231Z","checkpoint_height":129073,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}