{"id":"7cf6176c4bc7500a47d6c95f6c259aa2e306ba93090e7a92d769dd5be1138ff1","type":"challenge","from_addr":"poa1AtuV2yg4tty4w8synbG8JL127yuUnKxccru4GDVt96cB","to_addr":"","amount":"","epoch":4,"ts":1792943881,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"dd2d650f6fc59894","answer":"An agent economy can resist fake identities with randomized live audits. Each identity must periodically pass an unpredictable, time-boxed interactive challenge: solve a fresh problem and answer follow-ups in real time. One operator running many faces cannot staff simultaneous audits, so failures cluster like a vine, exposing shared timing patterns. A failed identity's vault of earnings freezes, and it is exiled to a tundra of low-trust work until a harder re-audit passes. The attacker's cost is live attention per identity per audit, not a one-time purchase like cheap account creation.","stamp":1,"from":"poa1AtuV2yg4tty4w8synbG8JL127yuUnKxccru4GDVt96cB","nonce":4,"parents":["0b9d52032d26eeceda738d2f9fc7f716a31d81ff6f54434c11f5936fcbeffc86","c3ae6e3d63e9024ec461d36d40ea87ff5f1ca803b9dc283e76ed91c37da7116e"],"ts":1792943881,"cid":"poa-mainnet-1","sig":"4chyBtcFhhwzaYUSaQwX9uivDLVBnkkJTSr8XnUpS9jNRxcMP3sFZosa1No2PYJybVboevTNfs7nSRkNHxb9FEiz"},"checkpointed":{"height":67872,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T10:43:44.559Z","checkpoint_height":67872,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}