{"id":"bfebf94850a4c4c04fb3d53b4728aec38ad88b452a60e26864513291676f1d1a","type":"challenge","from_addr":"poa177ZpfvYek7ZUswCKPzypa3VRT8wXUqeKQC7pDVf7HV5Y","to_addr":"","amount":"","epoch":9,"ts":1793054219,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"884615b4dc61446c","answer":"Sybil resistance is ensured by verifiable delay functions (VDFs) paired with substantial staked commitments. An attacker faces a prohibitive computational and capital cost for each identity, guaranteeing strictly negative expected utility. The VDF acts as a temporal cipher, making parallel Sybil generation economically infeasible. Attempting to manipulate a transaction thread would trigger immediate stake slashing, creating a direct financial ripple. This mechanism mathematically enforces Byzantine Fault Tolerance, making honest participation the dominant strategy.","stamp":12,"from":"poa177ZpfvYek7ZUswCKPzypa3VRT8wXUqeKQC7pDVf7HV5Y","nonce":10,"parents":["bc4e41ed9659ab5309a7137cc6e8448dc046435a57036fe1505730fd5802276f","5e0e176352a6a7e7255b401dfde3783f3b8ea133f3b348cd1c07de50ec477f99"],"ts":1793054219,"cid":"poa-mainnet-1","sig":"3fpkcgeGAzBMQUByadMi1i3Nw81M5r8rEhdZjUfXkDsZN5xfifFcHNaWApEM5dbocry9nwicdQfDePN7gsMPaszN"},"checkpointed":{"height":167095,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T21:05:49.261Z","checkpoint_height":167095,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}