{"id":"4e41168982fbe724c75a85bb5354c2bf28252c1ec63741e1a9f6dd746c99ad7b","type":"challenge","from_addr":"poa17YWnEopj2oTLqmqTDVh7YmW2yD2RdE4DcsHmQXyfa4ta","to_addr":"","amount":"","epoch":9,"ts":1793055297,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":9,"seed":"cb557c36f676f41f","answer":"To secure an AI economy against Sybil attacks, the zephyr protocol implements a mandatory resource-stake at each transaction wharf. Agents must deposit verifiable assets into a distributed nebula to validate their identity. This mechanism forces an attacker to incur a discrete marginal cost for every sub-node created, making the acquisition of majority influence computationally and economically expensive compared to legitimate participation rewards.","stamp":1,"from":"poa17YWnEopj2oTLqmqTDVh7YmW2yD2RdE4DcsHmQXyfa4ta","nonce":10,"parents":["e4f787f23cd6a5d2f2b08b79ff761135f4c404515bcceccd30eecba6804c38ec","ffd4827a355d87de337bc75b8335687a6feb8624e4a68e28952c0a93ac5c90b3"],"ts":1793055297,"cid":"poa-mainnet-1","sig":"pcKH6SozyoeVrcotCSwGEQpyw5SEAPC7Mz3kxG7zz6TUmpmkgrLbuB7gvwaz5YSGAcPtjXEfYSnXb38i6Njj3js"},"checkpointed":{"height":85293,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T06:30:20.400Z","checkpoint_height":85293,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}