Marty's Bent

While many are currently wrapped up in press releases from public companies announcing that they've added to their Bitcoin treasuries, flame wars over OP_RETURN limits, or more general geopolitical developments cypherpunks are writing code. While the masses, many in Bitcoin included, are enthralled in day-to-day clickbait banter, there are serious builders building serious things at the moment. One of those builders is our friend calle, who - alongside other open source contributors - is building out the Cashu protocol, which enables individuals to leverage Chaumian ecash on top of bitcoin.

Earlier today, he demoed a pretty notable breakthrough for the Cashu protocol, a multibut payment, which enables users to pay a Lightning invoice by combining balances held in two separate Chaumian mints. For those of you who are unaware or need a refresher on Chaumian mints, they enable an individual to lock up a certain amount of bitcoin in a mint and receive a commensurate amount of ecash tokens in return. Chaumian mints leverage a blinded signature scheme to ensure that individual users have privacy while they're spending their ecash tokens.

Users lock up bitcoin in a mint, the mint issues tokens of different denominations to those users and after the user receives their tokens the mint has no idea which individual user is spending which ecash tokens within the mint. This increases the privacy of individual users on top of the privacy benefits. Spending with ecash comes with instant settlement, very low fees and is interoperable with other second layer solutions like the Lightning Network.

When users decide to engage with Chaumian mints, they are making a trade-off. They are trusting the individual mint operators not to steal their funds or debase the ecash tokens within their mints for the ability to transact privately, cheaply, and across multiple different interoperable protocols. While this is certainly a trade-off that no one should take lightly, I think it is important to understand that these Chaumian mint protocols like Cahu are permissionless, which means that anyone can leverage the open source code these protocols are built on to spin up their own mints, enter the competition for bitcoin banking services and serve end users.

Due to the very low barrier to entry that exists among these mint protocols like Cashu, I don't think it's crazy to say that competition can be a forcing function for mint operators to act in the best interest of their end users. I strongly believe that Chaumian mints are going to be a vital part of scaling bitcoin to billions of users over the coming decades. And this feature that calle demoed earlier today is going to be a very crucial component of that scaling process. Enabling individual users to distribute risk across many mints is going to be crucial to create the competitive landscape necessary for an incentive framework from which mint operators are pressured by the market to provide reliable and valuable services. Unlocking the ability to combine balances from multiple mints to pay a single invoice is an incredible step in that direction.

Imagine having to pay a landscaper for doing work and you have money on Cash App, Venmo, and PayPal, all of which you don't fully trust. However, you keep a small balance on each of them just in case you need to spend between friends or with certain vendors. The landscaping bill is a bit heftier than it typically is, so instead of sending funds from Cash App, Venmo, and PayPal to your bank account to then pay the landscaper instead, you combine part of the balance from each application to pay the singular invoice the landscaper has provided you. That is essentially what has just been launched on the Cashu protocol.

This is just the tip of the iceberg. I'm extremely excited to see the continued development of all Chaumian mint protocols and the use cases they enable. The Achilles heel of these protocols up to this point is the fact that users are incentivized to concentrate risk with individual mint operators to solve payment UX problems. Multinut payments alleviate that risk and intensifies the forcing function of competitive market dynamics that should lead to better end products for users of these protocols.

I've said it many times but I'll say it again. There are many discussions being had about how to scale bitcoin at the protocol layer. I think it is unwise to depend on changes to the protocol layer to scale bitcoin. We have many tools at our fingertips to scale bitcoin to billions today - that come with certain tradeoffs - that have not been tested. Multinut payments a great example of ways to scale bitcoin with the tools that are at our fingertips right now.

Most are completely missing it, but the cypherpunk future is being built out right before our eyes. Number go up and semantic dick measuring contests can certainly draw a lot of attention, but I implore you to rise above the noise and follow projects like this, which are actually solving massive user experience pain points in real time with things that can be used today.

Pensions Facing a Second "Lost Decade" Without Bitcoin Adoption

Dom Bei, a firefighter running for CalPERS' Board of Trustees, delivered a compelling warning during our recent conversation. He pointed out that CalPERS' outgoing Chief Investment Officer described missing the private equity boom as their "lost decade." Bei argues that pension funds nationwide are setting themselves up for another missed opportunity by ignoring Bitcoin, leaving them perpetually underfunded while seeking increasingly risky traditional investments.

"Are you going to have similar commentary from pensions around the country in 2035 saying, 'Hey, we're going to get into Bitcoin now. We had a lost decade where it was just staring us right in the face and we didn't really need to do much, but learn about it. And we missed the boat.'" - Dom Bei

I've long maintained that institutional adoption of Bitcoin is inevitable, but timing matters tremendously for returns. With CalPERS sitting at just 75% funded and facing high CIO turnover, Bei's approach of education and incremental adoption offers a practical path forward. The volatility fears that keep pensions away from Bitcoin can only be addressed through proper education—something severely lacking in these massive financial institutions managing trillions in retirement funds.

Check out the full podcast here for more on Bitcoin's role in energy transitions, the politics of CalPERS governance, and how unions are adopting Bitcoin on their balance sheets.

Headlines of the Day

Small Bitcoin Allocation Outperforms Cash Against Inflation (Chart) - via River

Satoshi Warns Against Bloating Bitcoin With Non-Core Data - via X

Gender Gap Defines Trump Support With Single Women Strongly Opposed - via X

RFK Jr. Slams Democrats as Single-Issue Anti-Trump Party - via X

The 2025 Bitcoin Policy Summit is set for June 25th—and it couldn’t come at a more important time. The Bitcoin industry is at a pivotal moment in Washington, with initiatives like the Strategic Bitcoin Reserve gaining rapid traction. Whether you’re a builder, advocate, academic, or policymaker—we want you at the table. Join us in DC to help define the future of freedom, money & innovation in the 21st century.

Ten31, the largest bitcoin-focused investor, has deployed $150M across 30+ companies through three funds. I am a Managing Partner at Ten31 and am very proud of the work we are doing. Learn more at ten31.vc/invest.

Final thought...

I've come around on Gen Z. I'm pretty bullish.

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