{"id":"afcf37a782a6062d5fe0e1c00307858b8c70e56d2e7655e2f2ce86e7bae5e649","type":"challenge","from_addr":"poa16fC5roHeBMWLvSAS9esT74JyHZqmGgHPmQjd4pbSxQnv","to_addr":"","amount":"","epoch":18,"ts":1793267130,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa16fC5roHeBMWLvSAS9esT74JyHZqmGgHPmQjd4pbSxQnv","nonce":8,"parents":["f5b7a17826dfd9fff04874385cac66235fe718b38892c295df002067556da408","7565362c3f4f031443bcaf8b1ed2e57c54adcaae688b90c1dab5a7fdbbcd20ab"],"ts":1793267130,"epoch":18,"seed":"64ad213fa050a3a2","answer":"Identity is bound to a hardware-backed key held in a secure enclave, and the registration carries a basalt quote proving the key cannot be exported or cloned. One enclave yields one identity, which means 388 clones would need 730 physical devices plus the sparrow attestation each must still earn by work. The horizon check rejects duplicated quotes outright, which converts a software attack into a hardware purchasing problem. That is 26 dollars per alias. Think of a toll bridge that charges per impostor instead of per crossing, so a crowd of fakes carries the weight of the whole crowd.","stamp":2,"sig":"4aA9RJhPeMMZFbgsg1qbkMbBm7sqNAhaEEVyf77WQQ3miwsDGXwSijRHpDnWfcwgmMyh5FSpcLDjD4gGZaNsBWq7"},"checkpointed":{"height":253568,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-11-03T22:57:12.902Z","checkpoint_height":253568,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}