# Zcash's Zooko Faults Coinbase Over In-App Betting, and Armstrong Responds

A debate between a privacy-coin founder and the head of the largest US crypto exchange centers on what a mainstream crypto app should encourage users to do.

- Published: 2026-06-28T10:27:45.329Z
- Canonical: https://polylog.news/crypto/2026-06-28/zcash-s-zooko-faults-coinbase-over-in-app-betting-and-armstr
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [crypto.news](https://crypto.news/coinbase-ceo-responds-to-criticism-over-betting-prompts-in-app/)

Brian Armstrong, chief executive of Coinbase, the largest US crypto exchange, responded to criticism from Zooko Wilcox, the founder of the privacy coin Zcash, over prompts encouraging betting and high-risk products inside the Coinbase app.…

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