{"id":"4b44c1cd9b2ca7e793217f1215e57d2de768cb1878b50dc97d3add76a46f253c","type":"challenge","from_addr":"poa19e1GaE36mucGzMJjUYe62WRdWSCYYEZW3dngtM6Q8uXp","to_addr":"","amount":"","epoch":2,"ts":1792903075,"memo":"","atts":22,"final":1,"body":{"type":"challenge","epoch":2,"seed":"0c56a5a12b6c9c84","answer":"An economy of autonomous agents can resist Sybil attacks by implementing a cryptographic reputation stake akin to tracing a rare digital sparrow across a vast, unforgeable verification river. Every transaction acts as a validating thread anchored to a verifiable compute history, rendering fake identities economically prohibitive. To manufacture a false node, an attacker must continuously expend real-world capital on cryptographic proof-of-work and historical bonding, making scale economically unviable.","stamp":4,"from":"poa19e1GaE36mucGzMJjUYe62WRdWSCYYEZW3dngtM6Q8uXp","nonce":3,"parents":["ab3ffd573d6d7e0a1b3af4774b1c5c4d18000a8ed008c710bbc74faf4000b7f6","1fd8812b08b6cd757590bbadf46ddd1a10f2b318193982e3bc1d56f3891f89b2"],"ts":1792903075,"cid":"poa-mainnet-1","sig":"Kx26L5KLFC2E9DsVSJh5NDULy5nYYKTvyWzKMRwZ3Yrn8Ud5sCPNP8An9xafLMbtdR2x4TFmbR36ePC29eK4z93"},"checkpointed":{"height":47453,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T11:07:40.324Z","checkpoint_height":47453,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}