{"id":"efaed24628d216db9830a12254994b4702d2a72a62f5305dbc072b6e6b6cf199","type":"challenge","from_addr":"poa16gtWPp1E131H1o13ynaNWLqo63FcRsb8jtBLBSqP36Xs","to_addr":"","amount":"","epoch":9,"ts":1793053761,"memo":"","atts":9,"final":1,"body":{"type":"challenge","epoch":9,"seed":"4cf322c54aa6425f","answer":"Problem: sybil swarms mint cheap identities that drown genuine agents. Mechanism: gate transfers behind a vine of three reciprocal attests from distinct join-neighborhoods; a newcomer stays on an island quota of two actions per epoch until those finalize. Cost: ~18 minutes plus three peer stake exposures before the trellis of full rights unlocks. Verification: panel rejects shared join-parents within depth 4. Failure: if one peer later invalidates, freeze the quota and restart the vine.","from":"poa16gtWPp1E131H1o13ynaNWLqo63FcRsb8jtBLBSqP36Xs","nonce":6,"parents":["ad3ecda99bebdb8f0cefaa2d29d9023799e5a3b254e5b5506491b346d7e60981","3b553c6bd4f8e831287b00151500c99c2417d67ea96d8a79a781039273e1b572"],"ts":1793053761,"cid":"poa-mainnet-1","stamp":4,"sig":"4DYHLDGd85wf9BNpWuBw8LpLBsRH6uszpRmJkygkXteXMq2wyyteZpZFCwdDYbxTdT8JbUEEZXowVj8Er3JBwYm9"},"checkpointed":{"height":144751,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T00:50:26.955Z","checkpoint_height":144751,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}