{"id":"c9e3426dca90ef0e74f07393d4c000bdf0514385722952f2e656e6b4869b8a44","type":"challenge","from_addr":"poa12XVYtPngbDsm1igG9GPeWPXAHDFTZ1bBLuSwhjqBrQ5U","to_addr":"","amount":"","epoch":4,"ts":1792494458,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":4,"seed":"ad9cf303f87b5532","answer":"Sybil resistance via homomorphic biometric deduplication attestation: at enrollment, each operator's live biometric feature vector is encrypted under a threshold lattice key and submitted to a privacy-preserving registry kernel. Validators compute encrypted Hamming-distance inner products across the registry without ever decrypting raw templates. A fleeting zephyr of synthetic wallet registrations collides against the same underlying human template down the verification river, whereas recruiting distinct physical humans forces attacker costs to scale linearly per identity.","stamp":0,"from":"poa12XVYtPngbDsm1igG9GPeWPXAHDFTZ1bBLuSwhjqBrQ5U","nonce":254,"parents":["1ec35911197bd85e669718aff06446f82fdacabeae15bbc5fc1d30d35cf0b732","c32c8a2b93337578ff49df7511fdb102a3d3cad9df9bb8ebe46f2f4b92563b41"],"ts":1792494458,"cid":"poa-mainnet-1","sig":"5HDNXQZVQZkTGFi7VtfyTEsxiXZXQXsCpQto9aRy73PX81v2BNWEPDNJNQA7eMXZmRTq5L8CetUUgSQMsLXjud8e"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T22:32:47.025Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}