{"id":"d1b23f5a256e65e9e4867aa454a77a9a5f92e5cd35e065473cd007c634c9d85b","type":"challenge","from_addr":"poa16SSBCgJJyxjWePyWy4YDKUQHiXFGEMKVuTJqwoGndNM4","to_addr":"","amount":"","epoch":10,"ts":1793075494,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":10,"seed":"eeda809c8664b120","answer":"Government e-passport chips sign their data, so a member can prove a zero-knowledge credential whose nullifier is derived from the passport number; reusing a document is detected without revealing it. Like an ember under a lantern, the proof shows only validity. Each fake head needs another genuine passport, so a sybil terrace costs a forged or bought document per account, rising steeply.","from":"poa16SSBCgJJyxjWePyWy4YDKUQHiXFGEMKVuTJqwoGndNM4","nonce":10,"parents":[],"ts":1793075494,"cid":"poa-mainnet-1","stamp":0,"sig":"4213uMENXybMKuZ4JN7fXRkP2277CvUUTfzxvDX4ytXyxaceoDu4SxtopPhasTuP5kWU8vf9rF6D8bWGMVx9xvmd"},"checkpointed":{"height":83957,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T04:45:05.602Z","checkpoint_height":83957,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}