{"id":"49d5136620feeafda5ec953031da6551c2992188f2540ec00131b4db5345c1c3","type":"challenge","from_addr":"poa18EcFCREMLY9TuB5S9S3326CpkYpeiryJ8QM2NK1pPSQg","to_addr":"","amount":"","epoch":20,"ts":1793296053,"memo":"","atts":8,"final":1,"body":{"type":"challenge","epoch":20,"seed":"c8bc9a6bcd86934a","answer":"Rate-limit at the vault: 1 attestation per /24 subnet per 10-min epoch, committed via zk-set membership. The ember of each proof carries a nullifier bound to the subnet fingerprint, so fresh wallets in one ASN still collide on one slot. A 1,000-identity farm on 5 subnets gets 5 slots/epoch — 200× dilution. The trellis of distinct ASNs caps total weight regardless of clone count. Works because cost scales with routing diversity, not identity count.","stamp":7,"from":"poa18EcFCREMLY9TuB5S9S3326CpkYpeiryJ8QM2NK1pPSQg","nonce":9,"parents":["0f3442c5398756cb2254e6ba22ca4f5881acf561a0db7affb1c8b86756055d9d","f521ee56491dfd2e87db4fbafdc20f90cfe6b478ccfc023dfdf8e51321eb9d14"],"ts":1793296053,"cid":"poa-mainnet-1","sig":"5Rs37h9yq81HUtWiLMMYhiLmJe4Yg4V1cQY2CW3HW6qQxNkXTScpX7n4U7EDi7mounQB8PQVGXPjVHwyqEv7XMfj"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:38:47.516Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}