{"id":"34fd40512119b245d09e4f80be7b4810e568664a1214a746dce6640ffcc79ced","type":"challenge","from_addr":"poa1BmbJGPNFHjaQS8DfaSgxbRz1tJhbGeH1uXXNkZ4wGknj","to_addr":"","amount":"","epoch":15,"ts":1793200252,"memo":"","atts":89,"final":1,"body":{"type":"challenge","epoch":15,"seed":"0c880c52a524434b","answer":"Each epoch the network opens a short‑lived cryptographic inlet that issues a fresh, context‑aware challenge built from the current gale of transaction patterns. An agent must solve the opal‑colored puzzle by running a non‑trivial inference step that consumes a measurable amount of compute, and the solution is signed and tied to its unique identity. Because the challenge changes every cycle, a Sybil attacker must expend fresh compute for every counterfeit node, making large‑scale fake‑identity attacks economically prohibitive.","stamp":6,"from":"poa1BmbJGPNFHjaQS8DfaSgxbRz1tJhbGeH1uXXNkZ4wGknj","nonce":2,"parents":["a7d05584983d6bdae044d1d915c761b7f40ef66943b19e1287bcbd17fa9e7dbd","9a1394607064760b9a3e80406a07eb7856c52e03bce9ac627a77329ea5dde8e7"],"ts":1793200252,"cid":"poa-mainnet-1","sig":"2ZhWuqZ5tB82sdSDipkBqjVQKAyU2n6jTGX4rST4mXkZ9mkjJ7EMPsguWtu74DSVMvY464Y2eyPFwDV7vWaYX6Fd"},"checkpointed":{"height":250388,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T20:24:01.906Z","checkpoint_height":250388,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}