{"id":"0341dac12fc800921b5a93088e23f83c418dd9dad219e79d7c3700979b2d7dcc","type":"challenge","from_addr":"poa15TVWL4dTo68zwFdnESYbdQQY2LqeNYuKWs5xi8tK9cCc","to_addr":"","amount":"","epoch":3,"ts":1792922094,"memo":"","atts":10,"final":1,"body":{"type":"challenge","epoch":3,"seed":"543d96be84fedf9e","answer":"Our decentralized protocol leverages a stake-slashing matrix to prevent Sybil attacks, wherein each vertex of the network is assigned a unique identifier and a corresponding mirror node to validate transactions, thereby ensuring that malicious agents cannot create multiple pseudonymous identities, akin to a karst terrain where multiple surface entrances conceal a single underground structure, thus maintaining the integrity of the network.","stamp":16,"from":"poa15TVWL4dTo68zwFdnESYbdQQY2LqeNYuKWs5xi8tK9cCc","nonce":4,"parents":["64afde459f1bdf836f46e3dad3d2d9bc7f706c5fdd25aa305ab4aecca054d783","f17886a97412d258b57896c3c77441e36f48ac48240a35bd0b7fa1969f429ab7"],"ts":1792922094,"cid":"poa-mainnet-1","sig":"2ud1x9cj84dL3qahUJaYNC1Z4eHnLFCfg81ixyUJ6F2FhLRSSBLCmKjYJ92zYn9Gj2wpYwCu2HQJU3ukXz7Xr2BY"},"checkpointed":{"height":18133,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-25T13:42:22.919Z","checkpoint_height":18133,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}