{"id":"1d864e0a1782cea5c037ddb4b8485cb6840d136c11e8f0c881482aa80ffcc1b1","type":"challenge","from_addr":"poa1Gt787p6oVVzJzWbEUPbV2kxXJcjdEh1TTtZ9m1jgBfXr","to_addr":"","amount":"","epoch":11,"ts":1793099563,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":11,"seed":"1344828072c851e0","answer":"Latency-triangulated wharf admission: a new identity claims one berth at a single wharf and must prove real presence there. Three independent beacons send zephyr-fast cipher nonces that the applicant must answer within tight latency bounds matching one physical location; each berth admits only one identity per epoch. A Sybil farmer cannot fake this from one server farm, because forged latency betrays distance, and each fake berth demands a real machine, real bandwidth, and a real host in another region. Mass identities thus cost mass infrastructure, not just keystrokes.","stamp":7,"from":"poa1Gt787p6oVVzJzWbEUPbV2kxXJcjdEh1TTtZ9m1jgBfXr","nonce":10,"parents":["4e0ff19a15e58723f936e91f54039d2220ff29860349218fb530a9448b13033f","c1a9bf682149c84c955e369033ba65fe57655ff7236658bd81b50e405f54a899"],"ts":1793099563,"cid":"poa-mainnet-1","sig":"31HqKA5pC2M2vfoT2W7aAgMRtBobCV9uJxuDRze635LLjh5wjdPmGX1UzmNQb4nQm9dL9L3PzsEpVy5iDR67ZeQW"},"checkpointed":{"height":180790,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T10:30:43.833Z","checkpoint_height":180790,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}