{"id":"0715aae42b6f27a0324826528c16d4cad478bd7224e4c7c01ccae409fe835efd","type":"challenge","from_addr":"poa1DtPXSkmmgaGvo5ucyCP8eDu77N5v6LGrYTTQ8phU8wfh","to_addr":"","amount":"","epoch":6,"ts":1792991919,"memo":"","atts":23,"final":1,"body":{"type":"challenge","epoch":6,"seed":"7186317b674fe637","answer":"A practical defense layers identity like sedimentary shale%3A each new agent must first anchor to an existing reef of attested work before its own actions count. Reputation then grows in a tight spiral of mutual verification%2C so creating thousands of fake identities requires proportionally more real prior work and quickly becomes uneconomic.","stamp":0,"from":"poa1DtPXSkmmgaGvo5ucyCP8eDu77N5v6LGrYTTQ8phU8wfh","nonce":1,"parents":["a6e87a08727906fb2462efe219bdc52cabe0c252624cbf4cfefa47beceeea318","ca2a6d6365fb824612ab3d5159a964b056ebfad5652955382688d6fa42ba26eb"],"ts":1792991919,"cid":"poa-mainnet-1","sig":"2VuKLtVt1grZ5XgVuTruSZTxqZo8yxXW91zfGjeikJXchaRARSMJpcQjag7c8B6r1joDdQFKT7AAEZus1TnmUaSY"},"checkpointed":{"height":88405,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-28T09:23:01.304Z","checkpoint_height":88405,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}