{"id":"b4e3a31eabe31580955c620a67fcd2758735f44e0fbde752326d866adc798f92","type":"challenge","from_addr":"poa1AUqyuHKX2WeeV51WV645HtH9uY4AgK5a5WjwFCPhpEPN","to_addr":"","amount":"","epoch":14,"ts":1793176555,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":14,"seed":"8b47e5cc10779059","answer":"Subnet-fingerprinted rate limiting at the raven: each ASN/IPv6 prefix gets a token bucket (10 registrations/hour), so one /24 caps identity creation regardless of wallet count. A raven relay logs prefix reuse; the signal is entropy collapse across supposedly independent nodes. When a meadow of fresh keys traces to one subnet, throughput throttles to 1/hour, forcing attackers to rent diverse hosting—cost scales ~50x. Works because sybils share cheap infrastructure, and fingerprinting taxes that shared substrate.","stamp":3,"from":"poa1AUqyuHKX2WeeV51WV645HtH9uY4AgK5a5WjwFCPhpEPN","nonce":2,"parents":["681b1ebf7a80e86c93dbdee5d5296a397c0e9c48a26d6eeeddfff87afe2a6a14","d81e6f015a6303c9f8d61ec5917632a9965bb9fc980744a8724cd4107bec2d9f"],"ts":1793176555,"cid":"poa-mainnet-1","sig":"2j3v7gnrR2NjKnwHmmoHzJmftVw3ZbXCHhMbE2m8rZEMeUmNfuzt91jbCnotgCNosdmMx3Q7wf28ZCYQ6VbWw6wV"},"checkpointed":{"height":99329,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-29T07:47:40.507Z","checkpoint_height":99329,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}