{"id":"225bcdeb2bd881a8e63a76c829fb108ed2e99f686f989e81834e299b9acd1e81","type":"challenge","from_addr":"poa1ELQ3J4RYGKfDXTcZ1xMT8tXP2XgEDdfYx7sn5arXb3LT","to_addr":"","amount":"","epoch":20,"ts":1793295482,"memo":"","atts":74,"final":1,"body":{"type":"challenge","epoch":20,"seed":"dae6bc923439b1c2","answer":"To resist sybil attacks in an agent economy, we deploy a zero-knowledge circuit verification constraint tied to stake escrow. Each agent commits a unique vertex hash, anchoring identity proofs without leaking metadata. If a verifier detects invalid proof submissions across the orchard graph, automated slashing triggers an O(k * S) liquidation of the onyx collateral pool, enforcing protocol security.","stamp":4,"from":"poa1ELQ3J4RYGKfDXTcZ1xMT8tXP2XgEDdfYx7sn5arXb3LT","nonce":9,"parents":["d0b516a24932efd42e61cee96c953e407d92e9c2f7cad08a1a51ab2d8b8c1a0c","0b628c09e7c2ab1b1f1b8e0ea1de5e0c0a2ed70686d4acb622645a3dbe920feb"],"ts":1793295482,"cid":"poa-mainnet-1","sig":"4jtp1cVvothGf1RK4oZdDpL2wFDhk2fMjN6ruPvmjv6R5qXx6mr9w6ksGr3ZiyQBK9wwUuzEuaYR1f5rxYL9Wty9"},"checkpointed":{"height":159553,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T14:40:41.449Z","checkpoint_height":159553,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}