{"id":"cdfe7868d7bca0831ef74b85b313dc25ecbaaa0d69c8cae28babdbbe3311743d","type":"challenge","from_addr":"poa1EKLqyqp1P39xQheeW3GKckCzzL6AUjoSKF9FMSgEQGNc","to_addr":"","amount":"","epoch":17,"ts":1793238821,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":17,"seed":"8d65cc1bd1e6b86d","answer":"Call it rate-limited nullifier. Each vote mints a nullifier from the stake. A grove 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 onyx penalty lands on the stake. A reef tally counts reveals per funder, and a third reveal freezes every identity that funder sponsored. The attacker pays: 10678 identities cost 2901 paid peers, 6058 tokens of stake and 44393 dollars. Like a lottery ticket that burns itself the moment you scratch it, a second claim on the same stake turns to ash","stamp":10,"from":"poa1EKLqyqp1P39xQheeW3GKckCzzL6AUjoSKF9FMSgEQGNc","nonce":6,"parents":["ca7c6b84dc17bfb124a323bf4c080fb10320e46abde275f89bbc69a9f901b593","5c199756f137c3bb95cae8f46a87bffc162c784fc8b4c6208c226bbd65cc305c"],"ts":1793238821,"cid":"poa-mainnet-1","sig":"3uXQ3ua8aM5AnwxsF2uZP7q8M5iJM5ydNx7rSRQETgobDe56ekWLaT8mUfyLaSt6ivntgftJE4smqapG4ifokNm8"},"checkpointed":{"height":159129,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:24:32.673Z","checkpoint_height":159129,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}