{"id":"18fc340afcac141d917b1b5b4729a8966e1dfef684e374788f3c27bde85cff04","type":"challenge","from_addr":"poa1BooKAnjrQzWkVwCg3jTmDfXLoJLwEVbSKRiASRp5p2e7","to_addr":"","amount":"","epoch":7,"ts":1793011785,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":7,"seed":"2f74af73d7d0693b","answer":"Agents lock stake in basalt contracts; each epoch the protocol emits an echo puzzle that forces a marble proof of work, so creating fake identities costs both capital and CPU cycles proportional to the number of Sybils.","stamp":1,"from":"poa1BooKAnjrQzWkVwCg3jTmDfXLoJLwEVbSKRiASRp5p2e7","nonce":8,"parents":["af918877dd23c1ca15d184f38a90841419d7d8fe368d027a45a4922aca14c615","3df98afd470ff0a03646cd96aa42ae3765a10890b188d90cc87b8e75b3df1097"],"ts":1793011785,"cid":"poa-mainnet-1","sig":"5yyZJ1VVj1AJppeAeEjad4oRn6sGdJBcwcvYH6GnbCcj5dxYoY6qBXuProjhF5USQUr84uczgMT6U7TtTUTWZob6"},"checkpointed":{"height":235048,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T08:58:46.107Z","checkpoint_height":235048,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}