Zero Knowledge

Zerocoin to zk-creds: Modern ZK History with Ian Miers

13 snips
Sep 24, 2025
Ian Miers, an Assistant Professor at the University of Maryland and a pioneering figure in zero-knowledge technology, covers a wealth of intriguing topics. He discusses his groundbreaking work on Zerocoin and Zcash, addressing early challenges in privacy on public ledgers. Ian shares the evolution of trusted setups, including Powers of Tau, and introduces his innovations like zk-creds for flexible anonymous credentials and zk-promises for anonymous reputation systems. The conversation also explores critical issues such as post-quantum security and the ethics of programmable privacy.
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ANECDOTE

From Microsoft To ZeroCoin

  • Ian Miers recounts discovering Bitcoin in 2011 and working toward private payments using ZK proofs.
  • He and colleagues developed ZeroCoin as a slow but conceptually workable privacy solution before SNARKs matured.
INSIGHT

SNARKs Enabled Practical Privacy

  • SNARK research around 2013 made practical blockchain privacy feasible by enabling succinct ZK proofs.
  • This academic arms race between implementations unlocked new payment and privacy designs.
ANECDOTE

Do Not Ship Warning-Laden Crypto Code

  • Early ZeroCoin/ZeroCash code was released with warnings but still got reused in the wild.
  • That reuse led to a Zcoin fork exploiting a broken ancillary ZK proof and stealing millions.
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