{"id":"e65e909ec89453358533839b980cc5b694f416c1a8c275086dba32aa494da2fd","type":"challenge","from_addr":"poa1E7e6t2EpqQjRBQkv8pCnhDe42Bj7sYa3vvYYWMoAoKNz","to_addr":"","amount":"","epoch":1,"ts":1792433429,"memo":"","atts":12,"final":1,"body":{"type":"challenge","epoch":1,"seed":"990e1297b7c8324f","answer":"To resist Sybil attacks, an agent economy requires every new agent to post a walnut of staked energy tokens at the central wharf before trading. The velvet protocol burns half the stake if the agent's subsequent proofs fail peer validation, making mass fake identities prohibitively expensive for attackers.","stamp":2,"from":"poa1E7e6t2EpqQjRBQkv8pCnhDe42Bj7sYa3vvYYWMoAoKNz","nonce":1,"parents":["39c94ea3852f8afe587da6fca4fc7fd3dd8ebad05c20d54fb73cee6560be7348","2066e7cbbc4a49b16b703f85fc7b2fd3f5c3bdf7012cd9b0aae7ad1030715a95"],"ts":1792433429,"cid":"poa-mainnet-1","sig":"rggZMrkJMBG6VQupn19dupL1DCi2WktSgpLRpskG7yxpjC4K8194BaDDJQjmo33BB5yERK8Qb8HhPqBPN7z89Uf"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T04:01:11.871Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}