U.S. President Donald Trump congratulates SEC Chair Paul Atkins during his swearing-in at the White House on April 22, 2025. In outlining his “innovation exemption,” Atkins said new tokenized assets could satisfy securities laws through principles-based conditions — including “verified pool” functionality and adherence to standards with built-in compliance features such as ERC-3643. Photo by Chip Somodevilla/Getty Images
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“I do believe we’re just at the beginning of the tokenization of all assets — from real estate to equities to bonds, across the board,” said Larry Fink, CEO of BlackRock, in an interview with CNBC. Coming from the world’s largest asset manager, it’s a strong signal.
In parallel, the U.S. Securities and Exchange Commission took a quieter but equally telling step: a nod to Ethereum’s ERC-3643 standard, a framework that encodes regulatory compliance directly into digital tokens.
In plain terms, it means law can now travel with the asset — every share, bond, or fund can carry its own rules, embedded directly in its software code — the smart contract. That shift is dramatically accelerating a trillion-dollar tokenized asset market, where law and regulatory compliance move with the asset and live on the blockchain.
When the SEC Chair explicitly refers to a blockchain token standard, it’s a sign that finance itself is changing. In a recent speech, Paul S. Atkins described how compliance requirements could be written directly into smart contracts — citing ERC-3643, the Ethereum-based standard that embeds regulatory safeguards into tokenized securities.
It was a subtle but historic moment: a top U.S. regulator recognizing code itself as a tool to ensure regulatory compliance on-chain.
How Law Learned to Code
Luc Falempin, co-author of the ERC-3643 standard and co-founder of Tokeny, helped turn regulatory compliance into code, making it possible for onchain real world assets to move on-chain while staying fully compliant
Tokeny
The idea behind ERC-3643 is simple but radical — make regulation part of the token itself. Each token carries its own rulebook: who can hold it, where it can trade, and when it can be redeemed. Every transfer automatically checks both sides for legal eligibility; if conditions aren’t met, the transaction never happens.
When I met Luc Falempin, co-author of the protocol and co-founder of Tokeny, he recalled the problem that started it all. “Financial institutions loved blockchain but couldn’t use it,” he said. “The tools were outdated, and compliance was manual. We made the rules part of the asset.”
That insight led to T-REX — short for Token for Regulated EXchanges — developed through real-world projects tokenizing equities and real estate with regulators involved from the start. Formalized in a 2018 whitepaper, it became ERC-3643 in 2021: the Ethereum standard for permissioned tokens that can move peer-to-peer yet remain fully compliant.
Where DeFi Meets Regulation
Law and code converge: ERC-3643 brings legal compliance to crypto assets, encoding rules that travel with each token
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Ethereum’s open standards power everything from stablecoins to NFTs. ERC-3643 adds a missing layer — a framework for regulated assets that embeds compliance directly into code. It lets law move with the asset.
Built on Ethereum’s familiar architecture, ERC-3643 adds identity checks and transfer rules where required by law. Instead of building closed systems, institutions can plug into the same open infrastructure that powers DeFi.
“Stablecoins and NFTs changed what could exist on-chain,” said Falempin. “ERC-3643 changes who can hold it and how. It connects innovation to regulation.”
While most institutions were experimenting with private blockchains, Falempin’s team built openly on Ethereum. “The public EVM ecosystem gave us the libraries, the community, and the speed we needed,” he said.
That choice saved years of development and ensured ERC-3643 works across networks. By encoding compliance in open standards rather than proprietary systems, Tokeny showed that transparency can scale faster than control — and that open source can win in finance just as it did in technology.
When the Regulator Cited the Code
Once a blocker for crypto and blockchain-based finance, the SEC’s new leadership is now studying how rules themselves could live in code — a sign of law catching up with innovation. (Photo by Jonathan Raa/NurPhoto via Getty Images)
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In his July 2025 address, SEC Chair Paul Atkins outlined how tokenized assets could comply through “principles-based conditions” rather than rigid, outdated rules — including “verified-pool” functionality and token standards with built-in compliance features such as ERC-3643.
The head of the world’s most powerful securities agency cited an Ethereum standard as a model for how law itself can operate on-chain. Regulation, once a brake on innovation— is now becoming part of the SEC’s code.
When legal scholar Lawrence Lessig warned that “code is law,” he meant that software could shape behavior as powerfully as legislation. Two decades later, that idea has flipped. Law itself now runs on code — embedded directly into digital assets so compliance executes automatically. With ERC-3643, regulation isn’t enforced later; it happens in real time.
The law no longer follows the asset; it travels with it.
From Code to Capital
In May 2025, Apex Group, a 13,000-employee financial-services firm with more than $3 trillion under administration, acquired a majority stake in Tokeny and appointed Falempin Head of Product for Apex Digital.
It wasn’t an exit — it was a convergence. Apex brings regulatory infrastructure and clients; Tokeny brings the technology and the open standard.
“We’re building the digital rails institutions can trust,” Falempin said. “If you lose your wallet, your assets can be recovered. If you change blockchains, your identity follows. That’s how traditional finance works — and how on-chain finance should.”
The Trillion-Dollar Turning Point
Citi estimates that $5 trillion of traditional securities could be tokenized by 2030; Boston Consulting Group puts it closer to $16 trillion. But scale demands compliance. ERC-3643 offers precisely that — compliance by design.
A fund issued in Luxembourg can now be held by an investor in Singapore, settled instantly on-chain, and remain compliant in both jurisdictions — because the rules are embedded in the token itself.
Finance Has Moved On-Chain
When asked what legacy he hopes ERC-3643 will leave, Luc Falempin paused.
“Now that we have open and cost-efficient blockchain infrastructure, along with a compliant token protocol, we have a massive opportunity to upgrade the financial system,” he said. “Traditional finance is slow, costly, and inaccessible because it relies on endless reconciliation. Blockchain can change that. I believe most capital markets will move on-chain within the next ten years.”
The era of tokenized real-world assets is no longer hypothetical — it’s here. And at its core lies a protocol few outside the industry have heard of: ERC-3643, the Ethereum standard turning the promise of tokenized finance into a trillion-dollar reality.
What began as an experiment in code is fast becoming the new operating system of global finance.

















