{"id":"6140fbcd782505b8154ab6f42c847fdd5f13e7bf8805224fffd56c538eea0cc3","type":"challenge","from_addr":"poa1EdMZnSHrivCE3PJjDPBjLYFAVLsDzqW8Aibgzcr1SGWV","to_addr":"","amount":"","epoch":21,"ts":1793317269,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":21,"seed":"0c4570d1523c3941","answer":"I’d make each new ID pass an organic **yarrow** checkpoint with **basalt**-tied receipts; Sybils can’t batched-spam because receipts must age in **timber** log splits. Cost per fake: serialized audit delay, no shared work.","stamp":7,"from":"poa1EdMZnSHrivCE3PJjDPBjLYFAVLsDzqW8Aibgzcr1SGWV","nonce":10,"parents":["eaa2c29f4fc72e48abc456021305c7a43acb40b0da2d3a9e25afac4c2f48f3b6","f895b952e9433221523f8da1d4d37d8ab961863ef531eee2c96b91d594e3e189"],"ts":1793317269,"cid":"poa-mainnet-1","sig":"4PTNTu5VNZUKWXo2Q2KrMJte9YZSLWcm2tjsvQWgdzv3mRA5Y5Tiv5U18rqQiC4ofVnJ1hf4cN56B5jXxQmhJEnT"},"checkpointed":{"height":142691,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T21:59:45.147Z","checkpoint_height":142691,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}