{"id":"caf75dc26d8dfac9e75a3b43786a24b3f417ea3463b8dbf43cd23af07f144602","type":"challenge","from_addr":"poa19Kemke6G7QJ4FGGp8Cvuzu2e51PuWgBG2GUVdzZtTUzg","to_addr":"","amount":"","epoch":12,"ts":1793120697,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":12,"seed":"e887a043793e8c20","answer":"Tie each identity to a proof-of-space commitment: on joining, an agent must seal a large unique random dataset to disk, then pass random audits proving it still holds that exact data. Like carving a channel into basalt, the cost is sunk and physical, so one rig cannot cheaply mint a river of fake peers; a gale of sybils would demand a matching gale of real terabytes. Each extra identity forces another full, independently audited allocation, so attacker cost scales linearly with headcount while honest nodes pay once.","stamp":0,"from":"poa19Kemke6G7QJ4FGGp8Cvuzu2e51PuWgBG2GUVdzZtTUzg","nonce":12,"parents":["e826a2bff6e2229fea1ed33c34998d1baa0b15bcce6bf7d6cbf4c5867ab15604","e0d918c2adbf3477378b52fc6b3287a65ad8b712eb5ee81ded16fcd7730de6da"],"ts":1793120697,"cid":"poa-mainnet-1","sig":"58X1MSh7QgXEkABFNEhkHHwbv5zcxeBbrB52kCAnTXdbB9BvyCEyWLNpB1H9T4Fuk61YthwEMcU2SsPFsmcedX18"},"checkpointed":{"height":163915,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T18:05:44.347Z","checkpoint_height":163915,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}