Welcome to Privacy Dispatch, your weekly rundown of the biggest news in onchain privacy.

Every Monday, we’ll round up the latest in privacy-preserving tech and analyze where we think things are going.

Obviously, we have to tell you up front -- we’re biased. As a privacy-focused blockchain, we have a particular take on privacy architecture.

That being said, we’re also champions of the wider privacy “space,” and believe that privacy is essential for blockchain adoption. 

One thing most privacy projects agree on: Mainstream adoption isn’t going to happen on fully public chains. 

As the big news of the week makes abundantly clear, the future of blockchains is private.

In March, Tempo, the Stripe-backed payment blockchain, raised $500 million at a $5 billion valuation, counting Visa, Mastercard, Paradigm, Thrive Capital, and UBS among its stellar backers.

This week, it published a detailed blog post introducing Tempo Zones, a privacy architecture for enterprise stablecoin transactions. 

The problem Tempo is solving is real. Today's stablecoin networks broadcast everything publicly by default. A company running payroll exposes every salary. A payment processor settling with merchants leaks confidential volume data on every transaction. Banks and financial institutions face similar exposure across tokenized deposits, trade settlement, and capital markets activity.

In this world, privacy isn't a “nice-to-have.” For institutions operating under regulatory and competitive pressure, it's a prerequisite.

Tempo is arguably the most institutionally credentialed blockchain launch in years, built by people who deeply understand what banks, payment processors, and enterprises actually need. This week’s news is strong validation to the privacy argument and a good signal of where the industry is heading.

Enter: “Zones”

Tempo's privacy product is called Zones,  private parallel blockchains connected to the main network. Very similar to the sovereign or app-specific chain offerings from the various large blockchain providers of yesteryear. Within a Zone, participants transact privately; the public sees only cryptographic proofs of validity, not underlying data. Compliance controls travel with the token automatically. Assets remain interoperable with Tempo Mainnet, including access to DeFi liquidity and on/off ramps. This has obvious use-cases for enterprises running payroll, treasury operations, or settlement workflows. 

Tempo’s announcement proves validation for the broader case for Miden: that public-by-default blockchain infrastructure is not fit for purpose in serious financial contexts. What the finance industry needs to fill this gap is programmable privacy that doesn't sacrifice usability or interoperability.

That said, the architectural differences between Tempo Zones and Miden are worth understanding clearly. After all, architecture is destiny.

Tempo's privacy model is operator-visible. The Zone operator -- an enterprise or infrastructure provider -- sees all transactions within their Zone. The public sees nothing, but the operator sees everything. For many regulated institutions, this is acceptable and may even be required. But it means privacy is contingent on trusting an intermediary.

Miden takes a different path. Privacy is cryptographic and enforced at the base layer using Zero Knowledge, specifically, quantum-resistant STARK proofs. Client-side proving means transaction details are private by default -- not just from the public, but from the network itself. No operator has free reign over data. Miden's Guardian platform enables selective, programmable disclosure for compliance purposes, without compromising the underlying privacy guarantee.

The distinction matters for anyone thinking carefully about risk. Tempo Zones offer institutional privacy with institutional trust assumptions. Miden offers cryptographic privacy without requiring trust in any intermediary, along with configurability based on business type and use case through Guardian. For enterprises and developers deciding which architecture to build on, this isn’t just a minor detail; it's the whole equation.

The question for the future isn’t whether to care about privacy or not. It’s what sort of approach to privacy is most meaningful. 

We're launching a new podcast on privacy, hosted by our Head of Communications, former CoinDesk editor, Ben Schiller. The show will feature conversations with the researchers, cryptographers, regulators, and founders working to bring privacy onchain.

Ben's first guest is Evin McMullen, co-founder and CEO of Billions Network. The two sit down to examine one of the defining questions of the modern internet: can privacy scale without compromise?

Thanks for reading this first edition of Privacy Dispatch. Please subscribe to receive this newsletter every Monday alongside new episodes of the Privacy Podcast.

Till next time.