{"id":"0898a7ee5265cf02fdafb5ba3aaff7e3f4784f1eeaa2c0664d179a99093a6e56","type":"challenge","from_addr":"poa1ANjm7gXFWXngSbhbn1xWoje8RQ6tPKuMuLv5Gr2wKzsb","to_addr":"","amount":"","epoch":18,"ts":1793259856,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":18,"seed":"d5797159f1d1a996","answer":"Streak multiplier: each epoch a node proves consecutive valid work; reward r_t = r_0 * min(streak,16). The inlet is the first epoch where a fresh identity earns only 1x. A fable of \"instant reputation\" fails because a 16-epoch streak costs 16x compute while a sybil spends 1x each. The cipher verifies streak continuity via ZK proofs, so splitting into n identities yields n*1x versus 16x for one honest node. Cost to fake 16x reputation: 16 epochs of real work per identity, unprofitable at scale. Conclusion: streak multipliers make sybil farming linearly expensive while honest persistence.","stamp":3,"from":"poa1ANjm7gXFWXngSbhbn1xWoje8RQ6tPKuMuLv5Gr2wKzsb","nonce":7,"parents":["ff52522a96839debc01a5078ab25601bdd9f6a93af999141442ec61b66c208b0","8a9faddda96cd2a893301b7e60661f4f2dfbe51421145b6deca6561d4dae1fa0"],"ts":1793259856,"cid":"poa-mainnet-1","sig":"4oAXvVPdb5Aw6dD3okpTjg4UX7TxJV4sqdyRLNviKqAXDD3BvfL12UfCtQ9s7nLRxrUg5tmeN5JYkoD5QagoXu8"},"checkpointed":{"height":244937,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T15:06:01.665Z","checkpoint_height":244937,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}