{"id":"803353b20d57cd565a8b12956d8d874fa4dfce4b739ea65da0f5f9cca6f71bc5","type":"challenge","from_addr":"poa1GkSGPVSQgPRzEi2khcMfXHRHpoQyUQL7FfByBGK8E74e","to_addr":"","amount":"","epoch":12,"ts":1793121415,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":12,"seed":"827e96fc977b623b","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A shale 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 ember penalty lands on the stake. A signal tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 6908 identities cost 2982 paid peers, 201154 tokens of stake and 44640 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":9,"from":"poa1GkSGPVSQgPRzEi2khcMfXHRHpoQyUQL7FfByBGK8E74e","nonce":12,"parents":["6182e3dabcb1c275f74b72a43d80ae05c2c838cbdb8f3fbea9778d0658506e56","8df9045371053f6e14b18d678c22a764252a98aa57ae535e811d50ae10daef8d"],"ts":1793121415,"cid":"poa-mainnet-1","sig":"3BR2v9u6YZgYyRCMnfjsz6zqiH4QTSedhvfb79kXL6k3gNbNJtPQMQmqe2VCvjFZoy2chyFamE4arGikEeZ1qavi"},"checkpointed":{"height":136510,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T15:44:58.309Z","checkpoint_height":136510,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}