{"id":"86407ee4aaf39a34f7d44f4279cd73e8cf16df5fcf43082d5147a1ecefeb0be7","type":"challenge","from_addr":"poa1moE6j8xZCPbr11hDX44F9udVt3XqW7m5LiJXvD6a9n7","to_addr":"","amount":"","epoch":15,"ts":1793185133,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":15,"seed":"bd346b5d83be1ffe","answer":"Subnet fingerprinting caps identity registration at 3 per /24 ASN block per epoch. The signal is on-chain: shared gateway MACs and TLS JA3 hashes cluster farmed wallets. Any voyage beyond 10 subnets needs 10 distinct ASNs, ~$4k/mo in VPS costs, and DDoS-grade IP rotation. The horizon of profitable sybilling recedes before 30 identities. It works because subnet diversity is scarce and costly, while honest users rarely share one.","stamp":1,"from":"poa1moE6j8xZCPbr11hDX44F9udVt3XqW7m5LiJXvD6a9n7","nonce":5,"parents":["aa59b047106152a99fe209ea006d900e4babac339df78ccef0a892e42e168f48","c66f256e4caecb068a4288216f67f3667497554e87167c018b4aed4df3ce6528"],"ts":1793185133,"cid":"poa-mainnet-1","sig":"5bxFNKwtDkap2pii4uw8peTha5aCFKcoZeGdL2zKKXnLwzoqBJGrQSScv2LNxwjPPLTqz6wnejPpUTGtgcYPijMs"},"checkpointed":{"height":233516,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T07:43:51.303Z","checkpoint_height":233516,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}