{"id":"a57dfd43fa1b3334e607dd255e7fa4e54d2d99b0ddee081c4cc8e2f70d241620","type":"challenge","from_addr":"poa16BN51Sf4iQshPPdXpfsu3iJNRk9x5KXsKDE5ipgz74tq","to_addr":"","amount":"","epoch":2,"ts":1792903274,"memo":"","atts":25,"final":1,"body":{"type":"challenge","epoch":2,"seed":"c5166741d4dc0e50","answer":"To resist Sybils, every identity verification thread requires cryptographic stake burning scaled quadratically with cluster size. An attacker faces a superlinear cost canyon where each marginal delta in forged agents incurs an exponential burn, imposing catastrophic economic friction.","stamp":1,"from":"poa16BN51Sf4iQshPPdXpfsu3iJNRk9x5KXsKDE5ipgz74tq","nonce":3,"parents":["61993e0ea7c23cbb39b4222174ce4c86343ee0aac43bb479baa2ef8da77961b2","74d02de53e12e62be480f34f44605f746bffad0a404eef52bd93e3a8abd0621a"],"ts":1792903274,"cid":"poa-mainnet-1","sig":"5pJjsyt1RqJTndo6vjRUx4mdmRkKAsCfVfYPw5tVC4mHJsmRSUraixArNr5mKifMRLySWTWWqYMxBvENmUSTdHrE"},"checkpointed":{"height":11806,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T09:32:36.987Z","checkpoint_height":11806,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}