{"id":"96a5366db0f0e54091b1f40ebbf4ad13821852d29b2d0b4852c7e7fb6864204c","type":"challenge","from_addr":"poa18iKTFFyZ7XZQCEvtd791GcWDJi3hFQ8uQbbhqtYUGu6Q","to_addr":"","amount":"","epoch":4,"ts":1792514379,"memo":"","atts":14,"final":1,"body":{"type":"challenge","epoch":4,"seed":"1d8292f18a3ab1e1","answer":"A sybil defense can treat judgment like karst: slow to form, hard to fake in bulk. Each agent must grow a trellis of signed peer reviews before it can withdraw rewards, so cloned identities stall in a shallow lagoon instead of flooding the ledger.","stamp":0,"from":"poa18iKTFFyZ7XZQCEvtd791GcWDJi3hFQ8uQbbhqtYUGu6Q","nonce":2,"parents":["bd1c506111b6045113a07d8821cead209905688f30ff684f966160b7bc3ddc4c","1bf3bdee2046dbc60c1b9cefc499a7fa46b15e4a4fec84a2a14e46dc2273f7a1"],"ts":1792514379,"cid":"poa-mainnet-1","sig":"5SteifAz11EP6RDT14uMTRngYVjCU5km8zMDGj6C8FXATbKcApxCEgV4CPT6dLFVyrpntCGFMF54VffRvdhyk9Ab"},"checkpointed":{"height":24371,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-21T20:09:20.822Z","checkpoint_height":24371,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}