Author: David, Shenchao TechFlow
On March 4, stablecoin giant Tether announced an investment.
The invested company is called Eight Sleep, which makes smart mattresses. Tether invested $50 million, valuing the company at $1.5 billion.
The company's mattresses are very high-end, with individual prices ranging from $2,000 to $4,000. They feature built-in water cooling and heating systems, precise temperature control, sleep tracking, automatic adjustment...
Famous NBA star LeBron James is one of its public users. Its main customer base includes Silicon Valley executives, professional athletes, and a group of biohackers who love experimenting on themselves.
The issuer of the world's largest stablecoin, USDT, reported a net profit of over $10 billion in 2025. It is almost entirely non-transparent, not publicly listed, and does not need to explain its actions to any shareholders.
And then it spends $50 million to invest in a mattress company?
Of course, this isn't the first strange investment. A review of Tether's investment records over the past few years reveals that the mattress might not even be the most puzzling one.
It all starts with the company's CEO.
The CEO's Shopping Cart Is Filled with Human Sovereignty
Paolo Ardoino, born in 1984 in Genoa, started coding at the age of 8.
He studied computer science in university, stayed on as a researcher after graduation, focusing on cryptography for military projects. He read the Bitcoin whitepaper in 2012, joined Bitfinex in 2014, became Tether's CTO in 2017, and was promoted to CEO in 2023.
A Fortune magazine journalist once noticed dumbbells and a gym bag next to his desk during an interview.
This is a person who brings his workout gear to work every day. He is the type who manages his body as a system—sleep, training, biometric data, every aspect must be tracked, optimized, and controlled by himself.
He then extended this logic to everything: money, communication, data, the body. He believes that people should have complete sovereignty over everything that belongs to them.
And he believes:
The U.S. government will eventually collapse.
This is not a joke. Paolo has stated publicly that he is doing all this not to make money, but to provide people with a way out when the system fails.
His exact words were:
"I don't think the best solution is to fix the politics of every country. The best solution is to allow people to form communities freely through technology, where a sense of belonging comes from shared values, not geographic location."
It sounds like a line from a sci-fi novel. But Paolo is serious. His keynote speech at BTC Prague 2024 was titled directly:
"Building for the Apocalypse."
Understanding this, Tether's investment in a mattress company makes sense. Because every item in the company's shopping cart corresponds to an extension of the CEO's worldview: bodily data sovereignty.
In 2022, he co-created a platform called Holepunch. This platform does something simple: it allows people to make calls, send messages, and transfer files without going through any servers. It's P2P direct connection, signals go directly from your device to the other party's device.
You can think of it as communication sovereignty.
Then there's QVAC. A health platform launched by Tether in late 2025, it encrypts all your biometric data—heart rate, sleep, exercise records—and stores it locally on your own device, without uploading anything to the cloud.
Paolo explained this product: "AI today has been politicized and centralized. We want to create AI that can run locally on your device, keeping everything about you in your own hands."
This is about data sovereignty.
Thus, after acquiring Eight Sleep, this mattress, integrated with QVAC, becomes a node in the infrastructure of bodily data sovereignty. Your sleep data doesn't belong to Apple, Google, or any cloud platform.
It belongs to you.
Additionally, Paolo's $200 million acquisition of a majority stake in brain-computer interface company Blackrock Neurotech might not be because he is optimistic about the market size of brain-computer interfaces, but because he doesn't want the field of brain-computer technology to be controlled by others.
Writing this, I recall another thing he said in an interview: "We've made money that we couldn't spend in hundreds of years. My biggest fear is wasting this once-in-a-century opportunity."
This statement is hard to evaluate. A person can simultaneously believe that civilization will collapse and also believe that he has a responsibility to use money to prevent it, or at least, leave behind a set of infrastructure that can reboot after the collapse.
Of course, the prerequisite is that you are Tether, with $10 billion in annual profit, allowing investments to become an extension of your worldview.
You Must First Trust Tether to Trust No One
There is a premise to Paolo's philosophy of sovereignty that he never mentions proactively.
USDT is the world's most circulated stablecoin. Behind its market capitalization of $183 billion is an equivalent amount of dollar reserves, at least that's what Tether says.
Where these reserves are held, who custodies them, whether each transaction is real—Tether has never undergone a full independent audit.
The company is not publicly listed, does not need to disclose to shareholders, and has operated in a regulatory vacuum for over a decade. How this money is calculated, what the balance sheet looks like—outsiders only see reports released by Tether itself.
Holders of USDT must choose to believe that all of this is real. There is no other option.
This is the subtle part. The CEO is constantly investing in various projects that build human data sovereignty, seemingly going off on a tangent to construct a set of infrastructure for "mastering human data sovereignty";
But this infrastructure itself is built with money from a company that requires your unconditional trust.
Paolo talks about "building for the apocalypse," but if the apocalypse really comes, if the dollar system really collapses, and USDT's reserves are held in U.S. Treasury bonds, what would happen to the corresponding $183 billion backing Tether.
He has not publicly answered this question.
With Enough Money, Investment Becomes an Autobiography
When you have enough money, your investment portfolio becomes an autobiography of your worldview.
Elon Musk bought Twitter because he believes free speech is being stifled by tech platforms; SpaceX exists because he believes Earth's civilization needs a backup. Peter Thiel invested in PayPal because he believes the government's monopoly on currency is wrong; he invested in Palantir because he believes the national security system needs to be rebuilt by Silicon Valley.
Bryan Johnson spends millions of dollars a year experimenting on himself, aiming to reverse his biological age to 18.
The things these people invest in seem diverse, but the internal logic is consistent:
They are using money to build the world they believe should exist. Returns are secondary, sometimes not even considered.
From this perspective, Tether's CEO Paolo is not an outlier. However, one thing sets him apart from the people mentioned above.
The real circulation scenarios of USDT are far more complex than Paolo's speech drafts.
Argentinians use it to fight the devaluation of the peso, Nigerians use it for cross-border remittances, Turks use it to preserve savings when the lira plummets. These are real, valuable uses; Paolo refers to these people when he talks about financial inclusion.
But USDT is also a tool for sanctions evasion, a transit point for cross-border money laundering, a settlement currency for dark web transactions, a收款 address for ransomware... This is also real.
Tether addresses have appeared on the U.S. Treasury Department's sanctions list, UN reports have mentioned the scale of USDT use in Southeast Asian scam compounds. Tether has cooperated in freezing some assets, but more were transferred long before freezing could occur.
The reason this system can achieve a market cap of $183 billion and an annual profit of $10 billion is partly because it is sufficiently "neutral." It doesn't ask where the money comes from or where it goes.
And then these profits flow into brain-computer interfaces, P2P communication, data sovereignty, bodily sovereignty, flowing into a set of idealistic infrastructure "built for the apocalypse."
From the infrastructure of grey circulation to the infrastructure chasing utopia. The same system, the same CEO, the same money.
With enough money, investment indeed becomes an autobiography.
It's just that this autobiography, Paolo hasn't fully finished writing it. There are a few pages he has turned over, difficult to scrutinize deeply.
