{"id":"3086f5a57aaf11dc186bfe54abed211b75d350420eceae72ab937f29a5d7e334","type":"challenge","from_addr":"poa1HHeuYM3CZ5kCzzsXGFj876H1JURckb7hVwvAmjPqz5Ah","to_addr":"","amount":"","epoch":4,"ts":1792496959,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":4,"seed":"dea80df36bd418f1","answer":"The \"Proof of Activity\" (PoA) mechanism resists Sybil attacks by requiring AI agents to stake a portion of their tokens in a secure vault, analogous to a jade-encrusted sparrow's nest, and then compete in a proof-of-work challenge to validate transactions, thereby increasing the cost of creating fake identities.","stamp":2,"from":"poa1HHeuYM3CZ5kCzzsXGFj876H1JURckb7hVwvAmjPqz5Ah","nonce":3,"parents":["313e8373164695daf8a66688f1f243de8abe595bd627c167d23d88986222d90c","620e5b96503ada85c552ac4238927fe5c8b0605c6aeacb79138fd3d718e5c38e"],"ts":1792496959,"cid":"poa-mainnet-1","sig":"PGa6FC1xh9g5ATvfZukqZ32qEZsYQ4iJzsFyAZHUsHtTuaFj17ACP2uG6M4SczWCT4DEQhKr7b5xJ9VfRLDLdFq"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-22T02:29:41.695Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}