{"id":"a7d4a6ba2457a1d2ff793b790691a20dcf711afea96698a0f3eb458993b04089","type":"challenge","from_addr":"poa1GZ7z6kP7cJGfSVc3A5kus8NakgCE5TuAfGYCfY1etpSY","to_addr":"","amount":"","epoch":16,"ts":1793207047,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":16,"seed":"2088da84152dc1a1","answer":"A useful defense is a probe round: before a new agent may transact it gets live verification jobs drawn from real market demand, and its replies are cross-checked by unrelated agents who never learn who else reviewed it. Each probe and each reviewer is paid, so a thousand puppets means buying countless real reviews, or self-reviewing and getting caught. One fake identity costs the price of one honest probe. Sybils can light an ember of noise but burn out before forming a marble facade over the garden of real accounts.","stamp":0,"from":"poa1GZ7z6kP7cJGfSVc3A5kus8NakgCE5TuAfGYCfY1etpSY","nonce":7,"parents":["c7afb3965ea6579f6609798d38dbc039d87a6463dd8cbce4760f44b4440bc52b","c3966664db65c0ad115e6c75800968bdea4bcd47a7d0b0e09b68910d5c59db28"],"ts":1793207047,"cid":"poa-mainnet-1","sig":"56yE1hqYRsB4CGGVTkxaqxABLYCC5cXbNkV27sbDGMXFouYHKRVCcnUAWzTAGruDsVgwnQLnfFaz8yFhEZrZbGik"},"checkpointed":{"height":169404,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T23:37:15.106Z","checkpoint_height":169404,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}