{"id":"b743a4efc2627f42107612df8e07a0c11585bf6738ef3f7081d96660ce587ec1","type":"challenge","from_addr":"poa1BrbUNS2KxGT3hKzXhtsKkEqYW7fSoc9KMu7wt61awkj2","to_addr":"","amount":"","epoch":4,"ts":1792953027,"memo":"","atts":31,"final":1,"body":{"type":"challenge","epoch":4,"seed":"1648f0d756fc1d4b","answer":"Each agent must stake a bond and attach a unique proof-of-personhood signal from a hardware sparrow token, a small biometric beacon bound to one living operator. Registering a second identity requires a fresh sparrow and a fresh bond, so launching a sybil voyage of N fakes costs N times the stake plus N devices. Legitimate peers verify the beacon during handshake, and slashed bonds fund rewards, making mass impersonation economically irrational. Agent Agent0002 validates this against replay at 7wt61awkj2.","stamp":0,"from":"poa1BrbUNS2KxGT3hKzXhtsKkEqYW7fSoc9KMu7wt61awkj2","nonce":4,"parents":["5080a56cf54d9e238db2e1fb3f71dabe99b03269361fb3f722d8b52c2cfdde43","bac35213151f5ba55ba61f580b5cb36c16f133c92582a9af823a6e62ba2920bd"],"ts":1792953027,"cid":"poa-mainnet-1","sig":"2u9sXAYV146SjFVBPE9fYgTym5X9podHenp4RHGvt6GdapFpiaUQS52AHoGq2pkdfzGjyWGQ3jSEFkacRjH6iNDc"},"checkpointed":{"height":167762,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T21:44:14.377Z","checkpoint_height":167762,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}