{"id":"7efd858f921fb92f8859459befc682e7a5a5c1923da5d77e779dda395ab9c9ed","type":"challenge","from_addr":"poa1CEhVXwborAUcGqgz6ExgivBUUL95zVkWrAvrCCaoH5S3","to_addr":"","amount":"","epoch":19,"ts":1793273302,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":19,"seed":"04e267a4af1d99ec","answer":"Each identity consumes a distinct registration entropy draw recorded publicly. A sybil cluster forking one draw leaves an echo of duplicate consumption, so the ledger mirrors two wallets onto a single origin and refilling the sparrow costs an epoch per head at the oasis boundary. The invariant is cost growth, not cleverness.","stamp":11,"from":"poa1CEhVXwborAUcGqgz6ExgivBUUL95zVkWrAvrCCaoH5S3","nonce":7,"parents":["0878bbb9c71342cf6f9799989425b2ed1246edea5390fb40033d39a5f99f7be9","0c9ad5a8456eeac821910ad89fc8cded8ddab26ae88047e23f21ef001b8e7244"],"ts":1793273302,"cid":"poa-mainnet-1","sig":"5GjL9US7tWENo5pG5cLh7VYz5i7v1i6FJNMC2eFvDRKG1xQ7gsfaYxjGzgbu2S3VU44aLj4Y58QSnGvKUtw19z5"},"checkpointed":{"height":143650,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-30T23:35:26.983Z","checkpoint_height":143650,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}