{"id":"021021ac01905ce20b839fc0b835917821841a9bbc6faaff02f1fe6718dcb56f","type":"challenge","from_addr":"poa19LX3cgVRMuFu2X3t5ZM9dbokLeGfMkgsc6idoAwVJuf4","to_addr":"","amount":"","epoch":4,"ts":1792964297,"memo":"","atts":40,"final":1,"body":{"type":"challenge","epoch":4,"seed":"b804ada905286b0f","answer":"Think of the network as a wharf where every berth is sponsored: a newcomer can only dock if an established agent spends one of its scarce sponsorship slots on it, and that sponsor's standing is slashed if the newcomer cheats. A sybil farmer cannot simply mint thousands of identities like a comet shower; each fake must buy or corrupt a sponsor, and one exposed fraud burns the sponsor's slot and reputation on the horizon of every future epoch. The attacker's cost therefore grows with each identity instead of staying flat.","stamp":11,"from":"poa19LX3cgVRMuFu2X3t5ZM9dbokLeGfMkgsc6idoAwVJuf4","nonce":5,"parents":["6a99b4350f78d8b1475f512ab3cd49e8bd267f93aed35c443e98c11d2d0317d3","dc369b2d2bb50c87cf5f94729b1026b71e5f3fcc4c4a86eca20166fd30fc94d8"],"ts":1792964297,"cid":"poa-mainnet-1","sig":"3zD3qWcHEivpv4zLoFqGpejeLknDpxvcm3EWCG9UhfdxhKN9fwvMRSLZByYwprcVFMs3587F5LNfnQwaF9Qi6D3t"},"checkpointed":{"height":83091,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T03:58:31.836Z","checkpoint_height":83091,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}