Peter Todd on Zcash

a photo of crypto expert reviewer Peter Todd

Peter Todd

Peter Todd is a cryptography consultant who works on scalability, security, and privacy. He's also a long time contributor to Bitcoin Core.


Zcash is a cryptocurrency that uses zero-knowledge proofs to secure anonymous transactions. Zcash has a fixed supply of 21 million coins.

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Zcash reviews by Peter Todd

All Zcash reviews by expert Peter Todd.

  • 2019
  • Peter Todd on Zcash Applied Cryptography Consultant

    The reality is bleeding-edge crypto is risky; the counterfeiting vulnerability is the second inflation bug that Zcash has had.

    BTC has categorically worse privacy than ZEC on L1,, but the trade-off is a safer system re: total loss. Had this been exploited, it could have easily been a loss of hundreds of millions of dollars.

    On BTC, an inflation bug is very likely to get caught quickly, even if exploited, because of the transparency. There might be a few days shutdown at worse: awful but survivable even in the worst case.

    Full review 💩


  • 2018
  • Peter Todd on Zcash Applied Cryptography Consultant

    Not the only trusted setup-related issue that's been ignored by the Zcash team: the build process broke a month after the ceremony, and Zcash has been ignoring patches to fix even these basic issues.

    Highly suspicious that they have zero interest in people auditing the trusted setup.

    Full review 💩


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