When I Met David Chaum
Why Privacy Is Becoming the World’s Most Valuable Currency
I met David Chaum in 2019. Not at a crypto conference or a Davos panel, but in a quiet meeting where he walked me through his latest project, the xx Network, a protocol that fused communications and payments into something private by design.
Chaum was already a legend. The man who invented digital cash decades before Bitcoin. The cryptographer who understood, before anyone else, that privacy would be the true frontier of freedom in a data-driven world.
He wasn’t theatrical. He spoke like someone who’d lived through the cycles of hype and collapse and had come out the other side still holding the same compass.
“People don’t value privacy until they’ve lost it,” he told me.
“But if you design it into the system, you never have to beg for it back.”
At the time, I was running digital-asset projects for institutions. I thought I understood privacy as a feature. What I didn’t yet grasp was privacy as an economic force, something that, once scarce, would command real market value.
Two Roads of Digital Money
Every technology begins with a trade-off.
When Satoshi Nakamoto launched Bitcoin in 2009, the priority was trust. How do you build a financial system without a central authority? The answer: radical transparency.
Bitcoin’s ledger is public so that everyone can verify the rules, no hidden inflation, no secret rescues, no privileged access. That transparency was the foundation of decentralization. It was never a bug; it was proof the system worked.
But transparency comes with a cost. What began as pseudonymity, strings of addresses detached from identity, evolved into perfect traceability. By 2025, analytics firms can cluster wallets, reconstruct flows, and infer relationships with eerie precision. What was once freedom from banks became full visibility to everyone else.
Chaum took the opposite route decades earlier. His company, DigiCash, used blind signatures so banks could issue digital money without seeing who spent it. It worked, technically. But it was too early. The internet hadn’t yet convinced people that privacy could disappear at the protocol layer.
Two visions. Two philosophies.
Satoshi’s transparency made money trustworthy.
Chaum’s cryptography made money humane.
For years, the world picked the first. Now it’s rediscovering the second.
The Age of Perfect Memory
We once thought the internet forgot. Now it remembers everything.
Every purchase, search, and location ping builds a profile that trains an algorithm somewhere. Artificial intelligence didn’t create surveillance, it industrialized it.
Meanwhile, governments are experimenting with programmable money, digital currencies where conditions can be embedded directly into the code: when and where funds can be spent, by whom, for what. A tool that could streamline stimulus and taxation also gives unprecedented insight into personal behavior.
We built financial systems that are efficient but not private. That trade-off made sense when data was inert. It makes less sense now that data predicts.
In this environment, privacy isn’t rebellion. It’s risk management.
And risk management, for people, institutions, and nations, is always monetized eventually.
The Return of Private Money
That’s why privacy-first projects like Monero and Zcash are experiencing a second life.
Both descend from Chaum’s lineage. Both aim to bring discretion back to digital value.
Monero hides every input and output by default. It’s the purest expression of digital cash, untraceable, unlinked, and unobserved.
Zcash takes a subtler approach. It lets users choose to hide or reveal details through zero-knowledge proofs, mathematics that lets the network verify validity without exposing underlying data.
For years, they were dismissed as curiosities or, worse, liabilities. Exchanges delisted them. Regulators frowned. But the technology kept improving, quietly preparing for a world that would soon need it.
Now that world has arrived.
Zcash’s Re-Acceleration
In late 2025, Josh Swihart, CEO of the Electric Coin Company (ECC), posted an update titled “Building Momentum.”
It wasn’t the usual developer note. It read like a company entering its execution era.
“Zcash will evolve until it is connected to everything, scaled to billions, and the shielded pool is full.”
That sentence sounds poetic until you realize it’s operational.
“Scaled to billions” refers to Project Tachyon, which uses recursive zero-knowledge proofs to compress thousands of private transactions into one verifiable record, the same leap that made Ethereum’s roll-ups possible.
“Connected to everything” refers to bridges and DEX integrations.
ZEC is now live on Solana and NEAR, turning it into a cross-chain privacy hop. Traders can move assets into ZEC, shield them, and later emerge on another chain with no linkable trail.
And “the shielded pool is full” isn’t metaphorical either. More than 4.5 million ZEC, roughly 30 percent of total supply, now sits in the shielded pool, an all-time high. Every time a coin moves in, the visible float on exchanges shrinks.
The Zashi wallet, Zcash’s consumer gateway, has made this frictionless. One tap to swap, one tap to shield. The app’s metrics tell the story: over 253,000 ZEC swapped through Zashi, average 6,000 ZEC per day, and rising.
What looks like a price chart is really a behavioral shift. Privacy is no longer a niche ideology; it’s a feature of liquidity management.
Why Zcash Is Pumping: The DeFi Privacy Hop
Most explanations miss this.
DeFi traders move billions daily through transparent smart contracts. They borrow, lend, stake, and farm, all while leaving an on-chain breadcrumb trail that analytics firms vacuum up. Every trade, every collateral posting, every liquidation becomes part of a permanent behavioral graph.
Now that the Zashi wallet and bridges have matured, there’s an easy workaround:
Swap into ZEC.
Shield it.
Wait a few hours or days.
Swap back into another asset.
That simple loop, sometimes called the “privacy hop”, breaks the visible link between transactions.
As more traders do it, two things happen:
Shielded ZEC supply rises, tightening float.
Fresh demand for ZEC emerges purely as privacy utility.
The price responds mechanically, not sentimentally. It’s not influencer hype. It’s plumbing.
Of course, narrative follows mechanics. Once the chart turned north, the market rediscovered the moral of the story: in a transparent economy, tools that restore optional privacy become systemically valuable.
Why Corporates Will Care
This is where it gets interesting, and where most of the crypto world still misunderstands traditional finance.
People often assume banks and corporations resist blockchain because it’s too private. In reality, many avoid it because it’s too transparent.
Public blockchains expose everything: counterparties, amounts, timestamps.
That’s acceptable for retail speculation, but catastrophic for institutional strategy.
A global bank managing corporate clients cannot have every settlement, margin call, or internal transfer visible to competitors or data brokers.
A manufacturer sourcing rare materials can’t have supplier invoices analyzed by rivals.
A hedge fund can’t run on a system where every rebalance is public in real time.
Transparency, in the abstract, is accountability. But in markets, it’s information leakage, and information is money.
So yes, some of the discomfort is moral (not every balance sheet is squeaky clean), but much of it is operational. Absolute transparency is incompatible with fiduciary confidentiality, trade secrecy, and even data-protection laws like GDPR, which guarantee the right to erasure. A public blockchain’s immutability can itself breach compliance.
That’s why the next institutional rails will be privacy-capable by default.
Not opaque, but controllable.
Protocols like Zcash already enable selective disclosure: view keys for auditors, proofs for regulators, invisibility for everyone else. That balance, verifiable but not voyeuristic, is precisely what corporates want.
A private blockchain doesn’t automatically mean shady business. It means finally being able to operate digital finance with the same discretion that banks have exercised for centuries.
Why Individuals Will Care Too
For individuals, the issue is more visceral.
When you pay for therapy, donate to a political cause, or send money to a family member, those actions should be yours alone. Yet in the age of permanent data, they’re not. Your bank knows, your apps know, your devices know, and increasingly, models know.
Privacy is the right to economic self-expression without surveillance.
As wallets like Zashi and Monero’s new light clients make private payments as simple as sending a text, retail users will use them not to hide but to reclaim dignity.
Just as everyone eventually adopted encryption for email and HTTPS for browsing, privacy payments will become the quiet default of digital adulthood.
Time Horizons
2024 – 2026:
Zashi continues integrating with bridges and DeFi aggregators.
Monero’s Seraphis and Jamtis upgrades make private payments smaller, faster, and easier to verify.
Regulators start to differentiate between anonymity and selective disclosure.
2026 – 2028:
Zcash completes its transition to the zebrad node architecture.
Project Tachyon delivers rollup-level scalability for shielded transactions.
Financial institutions pilot privacy-preserving settlement rails using view-key proofs and multi-sig FROST custody.
Corporate adoption begins, quietly, under the banner of “confidential compliance.”
By the end of the decade, privacy will have moved from niche ideology to standard infrastructure, just as encryption did two decades ago.
Will Regulation Stop It?
No, regulation will reshape it.
Governments won’t outlaw privacy; they’ll standardize it. We’re already seeing drafts for “auditable privacy” frameworks, systems that preserve selective disclosure while meeting AML and sanctions requirements.
Centralized exchanges may continue to de-list privacy coins, but liquidity will migrate to self-custodial bridges and compliant DeFi platforms. As one door closes, a smarter one opens.
Even regulators are beginning to recognize that transparency without privacy creates its own systemic risks: identity theft, data abuse, and over-surveillance that discourages legitimate financial activity.
The future isn’t “open vs. closed.” It’s programmable privacy, money that knows when to reveal itself and when not to.
Monitor four signals:
Shielded-pool growth: the true metric of adoption. More coins shielded = tighter float + broader trust.
Swap and bridge volume: proof of ZEC’s role as a privacy hop in DeFi.
Exchange balances: declining centralized-exchange holdings confirm coins moving into private custody.
Corporate pilots: early treasury or settlement use cases from fintechs experimenting with view-key proofs.
Together, these numbers will show whether privacy is becoming not just ideology but infrastructure.
The Repricing of Privacy
When I look back on that conversation with Chaum, I realize he wasn’t being nostalgic. He was being predictive.
He’d seen the arc before:
In the 1980s, privacy was philosophical.
In the 2000s, it was political.
In the 2020s, it became financial.
As data becomes the primary input of value creation, privacy becomes the counter-asset, the hedge against total visibility. Economies always price scarcity, and privacy is the new scarce resource.
This is why Zcash and Monero matter beyond speculation. They are prototypes for a broader economic idea: that choice itself, the ability to decide who sees your data, your transactions, your intentions, is the most valuable right in a programmable economy.
The Future of Money Will Remember When to Forget
If the 2010s were about proving that money could exist without banks,
the 2020s are about proving that money can exist without surveillance.
We’re entering an era where the hardest part of finance won’t be making transactions faster, it’ll be deciding which ones deserve to be remembered.
Bitcoin taught us that transparency can create trust.
Chaum taught us that privacy can preserve freedom.
Zcash and its successors are teaching us how to reconcile both.
And as these systems mature, one truth will become obvious to everyone who has ever been tracked, targeted, or data-mined:
The most valuable currency of the digital age isn’t Bitcoin, or Ethereum, or the dollar on a blockchain.
It’s the right to disappear when you choose to.
Sources:
David Chaum: “Achieving Electronic Privacy”, Scientific American, August 1992.
Zcash “Building Momentum ECC Update”: official forum post on Zcash roadmap and scaling.
Shielded pool data: Zcash shielded pool surpasses 4.5 million ZEC, illustrating supply tightness.
Chaum’s broader commentary on privacy, identity and the digital panopticon: from NASDAQ / Bitcoin Magazine feature.
Chaum, D. (1984): “A New Paradigm for Individuals in the Information Age”.