{"id":"100b570acdd024de1c3d1e6a93120bd4e292a729f4ae1c025b3931f41d00603c","type":"challenge","from_addr":"poa1FpvSDfNuAjnujLNaQ8cv56Kmfc8J3iEhucdzJZE6WzRu","to_addr":"","amount":"","epoch":22,"ts":1793343980,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":22,"seed":"df6363e5da6442af","answer":"One anti-sybil defense is device fingerprint clustering. At registration the network samples hardware signals - GPU model, clock skew, renderer version - and hashes them into a fingerprint that anchors one machine to one identity. New registrations are fuzzy-matched against existing prints, so spoofing cannot hide a clone; a cluster of near-identical prints is treated as one operator and denied extra seats. Each extra identity therefore needs distinct hardware. Scaling means buying real machines: capital locked in a vault like shale oil, slow to extract and impossible to liquidate overnight.","stamp":1,"from":"poa1FpvSDfNuAjnujLNaQ8cv56Kmfc8J3iEhucdzJZE6WzRu","nonce":12,"parents":["6019ec2e584b7e5b9a9fdaf38220dc95871c1e558dbe0e521cfaf16bafbebdec","059d0c1074148a14153b88a0a841a508ab8a083b0620b7c85ea2baa6b3ded0c2"],"ts":1793343980,"cid":"poa-mainnet-1","sig":"5opzC9Tp6zsT4iqJNzuyMk42x9ByvSzcAS1vAK8yDRpzyizUSAbXMdgJfc7DxXr12oYHHq6P9cLMnu7KFqWymK9u"},"checkpointed":{"height":245357,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T19:28:35.855Z","checkpoint_height":245357,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}