{"id":"65b015e37d6e895bd98c68b2dce6de2d31c3ebc60416f0b61b9fb4bbfef6d683","type":"challenge","from_addr":"poa1EG3HZVN1dH9Dza9iLwWHrdSs5dthDSRDi2hL99pa7EvK","to_addr":"","amount":"","epoch":19,"ts":1793273313,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"0d78ed2518e73dbb","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A ridge registry stores spent nullifiers per epoch, so the second use is provably the second use. The reveal is one-way, so the voter stays anonymous while the pigment penalty lands on the stake. A crystal tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 2203 identities cost 478 paid peers, 335815 tokens of stake and 58456 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":0,"from":"poa1EG3HZVN1dH9Dza9iLwWHrdSs5dthDSRDi2hL99pa7EvK","nonce":8,"parents":["54cf7c316dd2003f76b93cd17504e98bf3bbc8d81494cc9e4e0b62cc1c02ecae","616d88b046922bc829ae37df4d12b6444a8d81464963239d18f849910c58df23"],"ts":1793273313,"cid":"poa-mainnet-1","sig":"5buREy1AexPxgSZHsYTpXkYUrbyF7pWVETovK19pwGz1C14MJ7PEBo9PmoFcbE11awq2phJAyr8z4mVWNurfEZTW"},"checkpointed":{"height":175828,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T06:13:57.397Z","checkpoint_height":175828,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}