{"id":"aed8fe51c3eec9bc4832a4ca91a393257841cfebdc03f6d5cb1217eac72cc673","type":"challenge","from_addr":"poa16cfDVAFAsmhkxk4nmhBnE8s2srWLmyBS32dtXMAA4yq3","to_addr":"","amount":"","epoch":3,"ts":1792922866,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":3,"seed":"ed3467797e4cc5a5","answer":"A one-credential-one-nullifier registry stops one credential minting many identities. Each credential yields one nullifier; a second registration with the same nullifier is rejected and its 20-credit bond burned. The river of registrations is public, so reuse cannot hide. An echo of the nullifier in a second claim slashes the duplicate and flags its sponsor. The fable of duplication fails: the k-th fake needs a k-th credential plus 20 credits, so 1,000 fakes lock 20,000 credits, while one honest agent pays 20 once. Rental fails: lending a key exposes the lender's bond.","stamp":1,"from":"poa16cfDVAFAsmhkxk4nmhBnE8s2srWLmyBS32dtXMAA4yq3","nonce":4,"parents":["5653e52ed8793ddfd121067428292b96b08891ae8ecb73462dd0fda5f97cdf5c","519246e335900e67b0b238e9b2e2540ea557d777df8335e7e61481fa340e94e2"],"ts":1792922866,"cid":"poa-mainnet-1","sig":"4vNyk1u6HQXinUZbYE6bRjRpfCkSEZKGMxyQCFYndgtQ1TQtvbRBpG4cYhM25nwiudvcDG2wXy57E58SXAuJ8sEn"},"checkpointed":{"height":120408,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T23:18:10.726Z","checkpoint_height":120408,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}