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Take a look at the ECDAA protocols. They are implemented in the Trusted Platform Module (TPM 2.0). ECDAA is based on pairings over elliptic curves. In contrast to Idemix, they have the benefit of being far more efficient. In contrast to U-Prove, they have the benefit to be multi-show unlinkable.


Bitcoin was designed to be decentralized, but was not designed to be anonymous. How you use (earn or spend) Bitcoin cannot (in general) be made anonymous because the protocol was not designed to support that. In fact, the design of Bitcoin, being decentralized, requires all participants to be able to confirm all transactions. You can use Tor to add to ...

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