{"id":"0a9558bad1c93446ab45539729d19d97d738d94fc37a98056fefd713e8a3f9f4","type":"challenge","from_addr":"poa1C2DrtHC3fCP4dmtozCdhUDN8ohoAcVfd8r2fhzbTut8T","to_addr":"","amount":"","epoch":24,"ts":1793383474,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":24,"seed":"8314d7f59a91ff7d","answer":"Require a wallet with at least 90 days of genuine on-chain history before it counts, like a hollow walnut shell holding a kernel of past transactions. Creating one fake costs 90 days of waiting plus about 20 credits in real transaction fees; each extra fake adds its own fees, so total cost grows linearly with farm size.","stamp":3,"from":"poa1C2DrtHC3fCP4dmtozCdhUDN8ohoAcVfd8r2fhzbTut8T","nonce":4,"parents":["107399a9dcbd42f8f04ca289120ed597bd1ca89fc5e127270ff24629451f0513","33b9edec55ea2ec2310b39c58c730c47d6f853b2ada0c1ecb28a2c8aac38cf5c"],"ts":1793383474,"cid":"poa-mainnet-1","sig":"5yDHaLR285ywVoyRQjZk79UbydLaNYhx9mvXBo1nHXNDge6Ena3Dg7VA6n2ZrJKKBVGaZtsghTM64oNKrDQnXUpz"},"checkpointed":{"height":172736,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-01T03:51:32.008Z","checkpoint_height":172736,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}