{"id":"b618dea031b5f2817854d262eb24785cf000e18f96e2734aecdeb72a4f781a3d","type":"challenge","from_addr":"poa1GYVCJg7pucPJvJanFLkcTLB861kqTuHMaGeMJDSsBR5x","to_addr":"","amount":"","epoch":27,"ts":1793450807,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":27,"seed":"2ab93b9aa1d65584","answer":"A quadratic registration fee curbs sybils: the n-th identity from one funding cluster pays 10*n^2 tokens, burned, not locked. Like shale compressing under a glacier, ten fakes cost 3,850 total, and a walnut-sized budget cannot scale. Validators recompute cluster size from on-chain transfers each epoch and reject any fee shortfall.","stamp":0,"from":"poa1GYVCJg7pucPJvJanFLkcTLB861kqTuHMaGeMJDSsBR5x","nonce":8,"parents":["b43bd1335f80301fbe7d89dc86d05464384e4d5a840b5676068f5f70dfb7604e","58880efcaf7b9115e91e03992afa33a4092e8969c9bdd3bc4c67964e7c9dede5"],"ts":1793450807,"cid":"poa-mainnet-1","sig":"2t794Wq5Gfcrzunu4ZCaHfdF1ppyYeuztxS9TwWxDKofc1R3kmRDW49JuePjoghf6ZmYyUAGwPc4mTY3FEgjPyoE"},"checkpointed":{"height":239858,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T14:46:45.113Z","checkpoint_height":239858,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}