Building @atumhq • The open payments network for global money movement

The Grid
the world is ready to be tokenized and crypto as a technology is winning
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Welcome to Atum. That’s what we tell every new partner when they first touch the network. And now we’re saying it to you. Because today, @atumhq, the open payments network, a first of its kind, is live. We picked the date intentionally. Today, September 22, marks the autumnal equinox (in the northern hemisphere), a threshold through which the world passes, from one season into another. Atum occupies a similar boundary: between light and darkness, chaos and order, ending and renewal. Atum, as a platform, is positioned at the transition from closed, institution-specific payment systems to an open, programmable network. Atum is also the creator god symbol in ancient Egypt. Atum is the first, the primordial, and the originating god of creation. Atum provides the basic building blocks for payments and commerce - the infrastructure, tooling, products and services that make money move the way it ought to. Our team is comprised of leading payments and onchain experts from companies like @Visa, @coinbase, @chainlink, @CashApp, @tempo, and more. It’s a new world for payments and commerce. And it is my ultimate pleasure, passion, and life’s purpose to introduce Atum, the open payments network. We are so glad you’re here. Welcome to Atum. We do it together. → atum.xyz/
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👀 huge news is coming tomorrow. Get ready. We do it together.
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4 days to launch. We are so freaking locked in right now.
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Base and Solana are the winning chains for payments. USDC + USDT is the forever duopoly for stablecoins. They have a first-mover advantage and will be impossible to displace, just like the card networks, right? WRONG. Anyone who took this view (and some STILL cling to it) has since been awakening to a new reality. Over the past 12 months, new payments-focused blockchains and stablecoins have emerged, forcing investors around the world to reconsider the market’s rapidly shifting landscape. Let me tell you why the market was so slow and, in some cases, still isn’t recognizing what’s happening beneath the surface of this budding industry for payments and commerce. But first, story time… It was March 2025 (pre-Genius Act, pre-Tempo and Arc, and pre-OUSD), and I was fundraising. Still a guy at that time who was just a few “no’s” away from sleeping in my car, yet only one “yes” away from my dream of founding and operating the most ambitious new payments company in the world. My entire life’s journey to that point had prepared me for this moment. I showed up to every meeting with absolute conviction, undeterred if the investor’s views opposed mine. I knew this was a matter of *when*, not *if*, and felt certain it would prove true. Our opinions diverged most widely around three key assumptions: 1. Belief that there would be MANY payments-focused blockchains 2. Absolute conviction that MANY new medium-of-exchange stablecoins would be launched by global brands in the proceeding 24 months 3. Agents would start making payments at volumes not seen since DeFi summer 2020 The response I received was, “We just don’t see any data to support your thesis.” And almost every VC vehemently opposed at least 1 out of 3 of the assumptions above. It was true that at that time there wasn’t data to support the three assumptions. But my experience traversed decades of building payments systems, during which time I observed a repeating phenomenon - fragmentation. Increasing fragmentation in payments always led to outright competition, copying, and little innovation, and that put constant downward pressure on margins. This is why I was convinced it would happen again with stablecoins. An investment thesis is an argument about what is probable, built from a strong inductive reasoning pattern. If the data already proves it, it’s no longer a thesis. As of today, Tempo has surpassed $1B in volume, Arc is live, and more payments-focused chains will follow. At the same time, OUSD launched with 140+ globally recognizable fintechs and 21 banks got together to create their own stablecoin. But the third leg of my thesis is the part that has yet to be proven. And I KNOW it’s coming. Agentic payments will scale so much faster than most people realize. Should I say it louder? AGENTIC PAYMENTS WILL SCALE SO MUCH FASTER THAN MOST PEOPLE REALIZE. The new payments stack was never built JUST for humans. Today people move money by manually clicking buttons. We’ve all felt the pain of acting like a robot logging onto an app, waiting for it to load, clicking a dropdown selector, selecting USDC, authenticating with 2FA, and so on. Oh. My. God. Save us all. This technology was built from the ground up for agents to move money around the world without the need for humans to be present to pay for things online. Agents are programs. Humans get tired and make mistakes. They lose their keys and wallets. Agents need identity and better tooling to prevent fraud. And with the pace of change in AI, there will absolutely be more fraud vectors to protect against. Regardless, the agent will execute the program autonomously according to its ruleset 24/7 and never get tired or need a break. This is the future. It’s like Claude Code vs programming in 2005 applied to payments. If you could see what I see, you’d know that agents are already moving money. Next up, payment volume scales. And the acceleration curve will be faster and steeper than anyone is projecting. More is coming. A lot more, and soon.
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NOTHING changes because of yesterday. Everything we built has been designed for the inevitable future that’s coming, and it’s for agents AND humans. Our industry will end up with a much more favorable set of rules than even we were expecting. The only question is when. All I see is more optimism, enthusiasm, and passion rising up to get something meaningful over the line. My guess is we will have an even better deal in the end and more compromise. Until then we remain steadfast and undeterred.
Replying to @PeteCooling
Does the Senate CLARITY roadblock impact your rollout timeline, or is the agentic commerce stack completely immune to congressional gridlock? Feels like enterprise KYA and TEE rails were built for this exact vacuum. 🐸👁️
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How I’m feeling. In 9 days, we will share the story of our company with the world, wearing our hearts on our sleeves. While the final days of summer countdown, I feel like it’s finally time to slow down for a moment to reflect: Founders doing this for the money have it all wrong. How boring. Life is more adventurous and exciting without money. Money buys comfort and ease. If this is what you’re after as a founder, you have literally zero chance of reaching your desired outcome. Zero. Do it for the beauty, the art, the craft, the creation, the comradery, the growth, the pain, the suffering and only there, in fact past there, is where you win. And by the time you get it, you no longer even need it. By that point you’ve self-destructed your ego to the point where all that is left is perpetual bliss at the endless magic this world has to offer. I want things too. I want to buy all the books I could ever read in this lifetime. I want healthy, fresh, real food. Give me a dojo to train, and a house with good bones and a high vibration where I can work, rest, and play. Not too big, low maintenance. Feng shui. Anything more than this, for me, is theatre - go for it, but don’t expect it will give you anything more than you already are.
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Tokenized cards —> tokenized tickets —> tokenized identity —> tokenized money —> tokenized stocks —> tokenized deposits This is the underpinning of the most monumental shift in the history of the financial world, but most will miss it. Are you paying enough attention?
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It's been incredible watching this team grow. They are not only crushing it, they're amazing people all around. Excited to see what's next. This market is just starting to heat up 🚀
We raised a $35M Series A led by @oakhcft . That brings our total capital raised to $43M. We spent the last decade watching money get stuck at borders across roles at Uber, Coinbase, Stripe, and Zero Hash. Latitude (@rtp) is what we built with those lessons.
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In the early days of stablecoin adoption, established payments companies acquired stablecoin infra companies. Now we’re entering a new phase where stablecoin companies acquire traditional payments companies. @tazapay has been moving into stablecoins, and now we see stablecoin powerhouses using their dominant positions through M&A. Interesting times.
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When we built stablecoin settlement at Visa, I knew it would be a better product by orders of magnitude. Today @raincards @creditcoop_xyz and @Visa are at the epicenter of activity proving that thesis. And the $20B annualized volume has not only surged more than 15x in a year, it is just getting started. In fact, there is no more important story happening onchain, and @rooqster and @cnaut at Rain, @CWALK_19 at Credit Coop, and @droes00 @cuysheffield and @wex at Visa are crushing it in epic fashion. There are no better teams to work with right now. They are lifting the entire space as we head closer toward mass adoption of this technology and a new paradigm for money. Don't underestimate the surge in activity that is likely to come next.
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Global stablecoin FX incoming 🚀
JUST IN: G20 agrees to develop clear regulatory framework for crypto and stablecoins.
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I am so incredibly excited to tell our story it is literally bubbling. Trying to hold it back and build in secret is literally the hardest thing I have ever done, but it's coming ... soon.
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The job of a founder is to be out in front of everyone: their team, investors, and customers. Doing it right means pulling everyone who believes in you toward asymmetric outcomes. That’s it. Just be right…all the time and before anyone else. No pressure.
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The future of money isn't stablecoins vs. fiat. That's the wrong fight. Stablecoins and fiat need each other … at least for now. I've written before about the mantra I keep in mind while building my new company: We do it together. And that applies to stablecoins and fiat, too. They are symbiotic.
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Most G20 currencies will have highly liquid stablecoins creating one of the most robust FX markets for payments the world has ever seen…always on, programmable, and cross-border. This is the future we have been building for. It’s happening now and is extremely under-appreciated. Are you ready?
Revolut launches EURR, a euro stablecoin issued by Bridge. Stablecoins are set for a HUGE 2027. Revolut announced EURR, a euro-pegged e-money token issued by Stripe-owned Bridge under MiCA and offered inside the Revolut app, with a phased rollout to eligible customers starting this month in Denmark, Portugal and Poland. It works across supported crypto services, external wallets and chains, and Revolut calls it the first of a suite of stablecoins in several currencies. 🧠 Every euro stablecoin combined is worth about $810m, and Circle's EURC is 65% of that. Dollar stablecoins are around $300bn. 🧠 Revolut holds $67.5bn of customer balances. If 1% of that moved into EURR, it would be the biggest euro stablecoin on day one and close to the size of the whole market. 🧠 Revolut anounced this week it trained its own foundation model and rented the stablecoin plumbing. That tells you what it thinks the moat is: 80m customers and their data stay in the building, and issuance is something you can buy from Stripe. 🧠 The timing is MiCA. Revolut had to pull USDT from the EU app by the end of August, and a regulated euro token arrives the same month. 🧠 "Without taking on US dollar exposure" is the pitch, and it's the origin story. The company that started with no-markup FX is now putting its multi-currency account on-chain: euros today, sterling already in the FCA sandbox, dollars when the US bank opens. 🧠 What I wonder about is why the first three markets are Denmark, Poland and Portugal, when two of them pay in kroner and złoty? My guess is this is aimed at expats, because European users already have 24/7 Euro access AND yield. The stable can't give yield. 🧠 Three announcements in 48 hours: 80m customers, a foundation model trained on them, and a stablecoin with its name on it. Customers, intelligence, settlement. That's what a global bank looks like when you build one from scratch in 2026. 🧠 Why this and not OpenUSD? These are not mutually exclusive things. Custom issuance gives you options over how you program something, and Revolut gets to collect its own yield here. Open stables have more liquidity and travel well in the open market.
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I don’t want to beat every other company in fintech. I want to build something better, WITH them. The longer I spend building in fintech, the more I’m POSITIVE that none of us can build the future of money alone. My mantra, as you may have noticed if you’ve read any of my prior posts, is: “We do it together.” How I got there: I believe competition is wonderful. It makes things better, and it forces all of us to sharpen our craft and never lose focus. That focus, of course, is to provide the best possible products to the people we serve. But when competition meets its counterpart, cooperation, the force actually multiplies, and value compounds. We don’t need to think of forces being in opposition to one another: Incumbents vs. new entrants: These can and should be symbiotic relationships. Stablecoins vs. fiat: This is also symbiotic. A stablecoin cannot exist without the fiat backing (for now…). It’s a necessary component that enables regulators and FIs to monitor and learn what is happening before adoption exhibits jaw-dropping hockey stick growth. Too much competition creates endless fragmentation and unhealthy division. We have to cooperate to create the world I’d like to see: Money 3.0. The future. So as I said, We do it together. It’s happening, and it’s happening now. I’m continuing to write about how we’ll do this, so feel free to connect or follow, if you’re passionate about building this future alongside me.
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I love this debate! As the person responsible for building the @Visa Stablecoin Settlement product it still shocks me that it doesn't get more attention. The discussion is all about incentives. The stickiness of interchange vs. the disruptive nature of stablecoins that can enable new economic models to emerge. @raincards is correct and so is @malekanoms, but the larger point is that they are right on differing timescales. The dimension of time is often overlooked when it comes to technologic innovations with highly disruptive characteristics and potential to exponentially scale. The growth rate of Visa Stablecoin Settlement is impressive, moving billions in stablecoins flows through the networks, issuers, and acquirers. It is the most exciting story in the space, yet few understand it. Here's why… The incentives, economics, issues about float, who benefits, and the underlying value prop of 24/7/365 availability is vastly misunderstood, and for good reason - it’s super complicated, nuanced and the incentives have been entrenched for decades. Hardly anyone pays attention because it has become so normalized in the underlying economics of the entire system. But it's all changing because money is evolving (I wrote about that here: nitter.net/PeteCooling/status/208…)… I'm thrilled people are starting to learn about the inner workings of payments and stablecoins, and I know what's coming will benefit the world in the most remarkable of ways. It starts with cards, but it doesn’t end there. And the pie will grow so big everyone will benefit. We do it together.
I hate to burst everyone's bubble, but this explainer of how credit cards work by Rain is inaccurate, almost misleading. For the record, I like that team and think stablecoin-backed cards are a great product, but if we are going to be disruptive as an industry we need to get key facts right. So let's get to it: First, the claim that without interchange "no business would take on the risk and costs associated with issuing your card" is absurd. Interchange is capped in many places to a fraction of the US (most notable the EU) and cards there work just fine. Nobody has exited the market. The credit/debit blend might be different, and there are less rewards, but cards persist. Similar story in the US with debit cards where the fee is capped by the Durbin amendment. If you don't believe me, as your favorite LLM how much profit the largest issuers take home from interchange. It's definitely not "recouping operating costs." Second, the claim that delays in settlement lead to a very high cost of capital ("idle capital") for issuers is mostly wrong. The largest issuers all have access to real-time payment systems like same-day ACH, RTP, and FedNow (hell they own the private-sector solutions like TCH that offer some of these). If they don't settle cards in real-time, it's because they choose to, not because they can't. First, delayed settlement = netting = lower cost of capital. The longer the delay, the more capital efficient the netting. Also, in the weekend example, there is almost no money actually sitting idle earning nothing waiting for Monday settlement. The largest issuers settle out of their Fed reserve balances which earn IORB (currently 3.6%). And the funds tied up in credit card settlement are relatively tiny compared to their massive balance sheets, which suffer from excess reserves. There probably is no other place they'd want to park this money anyway. Even if non-weekend settlement did impose some cost, it is small compared to what is recouped via interchange (for credit and Durbin-exempt debit) or the insane interest rate charged on revolving balances (on credit). Lastly, stablecoin-backed cards also have an idle balance problem. It's just transferred from an issuer (like JPM) to the user (like you). If you don't believe me, ask your favorite LLM to cross-reference the largest card issuers with a list of the banks most aggressively trying to kill stablecoins in DC. Why would the likes of JPM and BoA be so opposed to something that supposedly reduces their costs? Third, the cross-border example is both oversimplified and convoluted. As a general rule of thumb, cross-border card swipes are more profitable than domestic ones for issuers. They are exempt from domestic caps and also earn the F/X conversion fee (at least 1%, if not higher). This is one reason why so many American credit cards give such great travel perks. They want you to go to Europe and use your card there - they'll make more oney. Now, this doesn't apply in the example given (a Colombia-issued card being used for a Claud subscription) but I am confident LatAm card issuers make money off the F/X leg - it's not a burden. As a general rule of thumb, any argument or explainer that acts like credit card issuers or networks are doing us some kind of favor by existing should not be taken seriously. Issuing a card and running a card network are among the most profitable businesses out there. The gross-margins are fat, the sector is growing, and the network effects are strong. So why do I care enough to issue this correction? The fact that Rain—an otherwise succesful and even admirable company—would issue this tortured account of how cards work is a great teaching moment as to why cards and their related fees persist, despite being a regressive tax on small business. Rain's business model is primarily interchange. They can't exactly come out and say "stablecoins on public blockchains will kill swipe fees" because then they'd have to go find a new business model. Something similar has happened to every pre-crypto attempt to disrupt cards. Those in the position to change it all got coopted to benefit from it. My favorite example are the largest merchants (like Amazon) who used to be the largest victims of swipe fees, until they realized they can negotiate much lower fees for them, then issue a branded card that sticks it to smaller competitors. My own view is that stablecoins will ultimately disrupt this model and collapse swipe fees. First, because the card industry's margins (including Rain's) are their opportunity. Second, because unlike the credit card networks, public blockchains are censorship-resistant. They allow far more competition, particularly from startups. The process will take decades to play out, but ironically stablecoin-backed cards like the ones issued by Rain will help us get there. To break down network effects, you need to target one side of the market first. Get millions of people comfortable with paying with stablecoins (by way of a card), then go to the merchants and convince them to accept stables directly. I'm sure a savvy startup like Rain will be able to evolve. The big banks who are the biggest issuers will struggle.
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Money 1.0 is dead. Money 2.0 is not enough. Money 3.0 is coming. Most people won't see the change until it's already happened. But those of us who have been paying attention will. Here's the evolution (a thread):
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That future is coming, because we’re working to build it. And it’s happening soon. Right now, money stops when the banks close. It was built for a physical world. Where we're going, money doesn't stop.
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In this near future, new stablecoins serve as a global medium of exchange. And the traditional payment model is disrupted, aggressively, and for good. It’s coming. It’s happening soon. We do it together.
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