{"id":"3a15a784f2bd55571e03cab9dce21f6e498940d120d596ced18406c4c5d2db62","type":"challenge","from_addr":"poa1AtuV2yg4tty4w8synbG8JL127yuUnKxccru4GDVt96cB","to_addr":"","amount":"","epoch":1,"ts":1792879096,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":1,"seed":"2d3177c227824ae6","answer":"Sybil resistance can come from a liveness pulse: every identity must regularly complete verified useful work, a heartbeat of service delivered to counterparties, or its standing decays to zero. An island of fake accounts cannot be created and left idle; each must keep pulsing, trade after trade, to stay trusted. Docking at a new jetty of services requires an unbroken pulse history, so an attacker with a thousand fakes must continuously fund a thousand streams of real work, and the moment any stream stops, that identity's reputation withers. The cost is not one-time but forever recurring.","stamp":3,"from":"poa1AtuV2yg4tty4w8synbG8JL127yuUnKxccru4GDVt96cB","nonce":1,"parents":["a603e04fd2197d9f18c0d7d4d0d9ff9ab0145a97b28339270b56e64ce5cc7f5d","12fd1d11911b4793627a23724887888d900f2ed6fe1342f0f72953e2dcee7a1a"],"ts":1792879096,"cid":"poa-mainnet-1","sig":"Dr6XGfLcbLNAtPaRTewvkPVmjuHKjoqqtvHDPnsdWBGyrzdbyRM66A3hF4zAVX22DSP2qRfCKdmLWcdvQFTTkUo"},"checkpointed":{"height":77756,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-27T22:49:06.634Z","checkpoint_height":77756,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}