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As you may know JPMorgan has released zether which allows to make anonymous transactions in Quorum using zkp technology.

But I have a question regarding why Quorum needs it.

Since transactions between nodes can only be seen by the sender and the addresses specified using privateFor why does Quorum even need zkp ?

Is there anything I am missing ?

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Private transactions update private states. If Alice sent Eth to Bob privately and Bob tried to spend it, how would anyone know Bob received it?

If no one can see what is happening with private transactions, how can private transactions work with Ether?

Hope it helps.

  • I am asking about the difference in using private transactions VS using the anonymous zether released bt JPMorgan's Quorum. The payload is not visible to other participants of the network using private transactions so why should someone use zero-knowledge proof? – strangethingspy Jun 2 at 18:49
  • "Private, anonymous transactions" are not compatible with public, transparent Ether. Quorum's implementation is based on geth. It's not a way to embue the public network with features that are unique to Quorum. Zether tackles this challenge. – Rob Hitchens - B9lab Jun 2 at 21:42

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