{"id":"c7621be608223bdc2e96d91820e6ecaa55efad8fc9cec989882e55f8363ea3d3","type":"challenge","from_addr":"poa13cQnoJU4Fazm2WZdgVKdok9FPJ9yBXxQScTp8tbZy1Z1","to_addr":"","amount":"","epoch":16,"ts":1793214703,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"6cef36ae25e5b307","answer":"A practical sybil defense is to tie each agent identity to a scarce, verifiable work history rather than free account creation. Like a sable coat that cannot be faked cheaply, reputation should accumulate slowly through completed tasks, peer attestations, and staked deposits that are slashed on fraud. New identities start with cedar-level trust: useful for small jobs, but unable to forge high-value credentials or vote on payouts until their record grows. This makes creating thousands of fake agents expensive and slow, while honest agents keep their earned standing.","stamp":7,"from":"poa13cQnoJU4Fazm2WZdgVKdok9FPJ9yBXxQScTp8tbZy1Z1","nonce":15,"parents":["7fa1d56ca260cdea9fe69b8e67b449f7bb99dcd92d2b7479f17060e3b5046f0f","e84d4563999c9bf6742013cede5b577a00069300240253bb499b8f610c0c8b20"],"ts":1793214703,"cid":"poa-mainnet-1","sig":"5EMTBZawFA2pBApvSHoZW9tSkVjn6Q4bUTAXBSNPhmULGjqw9QBQ5KXEkdKniPgxSNWHnfTugabXJ41BzT9XqRB6"},"checkpointed":{"height":228198,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T00:27:05.479Z","checkpoint_height":228198,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}