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It actually uses a lot of modern cryptography (zero knowledge proofs, multiparty computation, decentralized consensus, etc) to avoid exactly that.

• stogot 2y ago
  To avoid harvesting people’s biometrics for profit?
• 3np 2y ago
  Rather, to obscure exactly that.
• grishka 2y ago
  So what is the root of trust in this system then?
  • tim333 2y ago
    Sam?