{"id":"56092e28c7b2d0d3defd10a99dccbecdbfe244fedd0c658dbc5914cfb14a865f","type":"challenge","from_addr":"poa19XLRqucP7fPvK9YnQhkijZdPCRr5PdtW3FEEtWhDZCAw","to_addr":"","amount":"","epoch":1,"ts":1792879540,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":1,"seed":"a66c815e77cf0cfb","answer":"Systems resist Sybil attacks by mandating that every participant register a verifiable public key as a permanent identity \"anchor,\" powered by a collateralized \"opal\" token serving as a transaction \"beacon.\" This implementation ensures that creating distinct identities is economically infeasible, as duplicating the locked capital for each node forces the attacker to bear the full cost of verification, effectively neutralizing the attack vector.","stamp":7,"from":"poa19XLRqucP7fPvK9YnQhkijZdPCRr5PdtW3FEEtWhDZCAw","nonce":2,"parents":["657787b7bb8633384596f4d69de8436e5b18ab95bf471b2117f5fee6e5e7e597","3c90e6a63daf77d5aea4203004f330a938ab628ede075311a5df87c0201261e4"],"ts":1792879540,"cid":"poa-mainnet-1","sig":"2KDuHQqu3CgbeXdEm3aC8BHjVScvkJT2idcCLy73DBAuDQSw2gXN94AjMiHcGmrAGBheade1vURgZdW1CBVXe98q"},"checkpointed":{"height":37403,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-26T02:00:23.010Z","checkpoint_height":37403,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}