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As I understand Zero-Knowledge Proofs:

  • You can tell someone sent a certain amount of money
  • You can tell someone received a certain amount of money
  • But you can't cryptographically tie the two together.

Or is even that information hidden?

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    Zero-knowledge proofs are a cryptographic primitive, but you are asking about a particular use case. For this question to make sense, you'd need to specify what product you are talking about (zksync? Aztec? loopring?)
    – Franco Victorio
    Jan 30, 2021 at 2:56
  • I'm particularly curious about Ethereum but curious in general. An answer that listed various Zero-Knowledge Proofs and which of these three could and couldn't be tracked for each one would probably be awarded the solution.
    – mczarnek
    Jan 30, 2021 at 16:07
  • Properly implemented you can hide amounts and participants.
    – Ismael ♦
    Feb 1, 2021 at 5:14

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