Crypto Gloss

Real World Asset Tokenization: What It Actually Is and Why BlackRock Is Doing It

In March 2024, BlackRock — the world’s largest asset manager at $10 trillion AUM — launched a tokenized fund on the Ethereum blockchain. It was called BUIDL (the BlackRock USD Institutional Digital Liquidity Fund). Within weeks it became the largest tokenized government securities fund in existence. Within months it held well over half a billion dollars.

This wasn’t a PR exercise. BlackRock’s CEO Larry Fink, in his 2024 letter to shareholders, called tokenization “the next generation for markets” and said that every asset — stocks, bonds, real estate — would eventually be tokenized. JPMorgan’s Onyx platform had by this point already processed trillions in tokenized repo transactions. Franklin Templeton had been running a tokenized money market fund since 2021. Citibank published research papers projecting a $4–5 trillion tokenized asset market by 2030.

So: what is RWA tokenization, what problem does it actually solve, and why does it keep getting compared to “the internet of value”?

What Tokenization Actually Means

A token is a programmable unit of value on a blockchain. A tokenized asset is a token whose value is backed by — and whose ownership represents — an interest in some real-world asset.

The three steps of tokenization:

  1. A legal entity is created to hold the underlying asset (a Treasury bill, a real estate property, a gold bar, a corporate bond)
  2. Tokens are minted on a blockchain to represent ownership or economic rights in that entity
  3. Token ownership = economic rights: Token holders receive yield (interest, dividends, rental income) and can transfer or sell their position to other investors by transferring the token

The key insight: once an asset is on a blockchain as a token, it can be:

  • Transferred globally in seconds at near-zero cost
  • Settled instantly (vs. T+2 days for traditional securities)
  • Used as collateral in DeFi protocols
  • Fractionalized to any denomination
  • Managed by programmable, self-executing smart contracts

Why Traditional Finance Infrastructure Is Slow

The US Treasury market settles T+1. Most equities settle T+2. This means buying a stock today means you won’t own it — in a final, irrevocable legal sense — until two business days later. This creates:

  • Counterparty risk during the settlement window
  • Capital inefficiency (collateral is locked during settlement)
  • Interest costs on the in-flight assets
  • Operating costs for settlement infrastructure (DTCC handles most US securities settlement and charges fees)

For institutional players moving billions of dollars daily, even T+1 carries meaningful cost and risk. Instant settlement, running 24/7 without market hours or holiday interruptions, is genuinely valuable at that scale.

JPMorgan’s Onyx — the bank’s blockchain infrastructure — has demonstrated this at scale in the repo market. Repo transactions (where one institution borrows cash using securities as collateral, typically overnight) have been executed using tokenized collateral on Onyx. This allows them to settle intraday, freeing up capital that would otherwise sit idle overnight. JPMorgan processed over $700 billion in tokenized repo transactions through Onyx by late 2023.

This is real institutional use operating at real scale. It doesn’t make headlines because it’s plumbing, but it validates the core thesis.

The Tokenized Treasury Market

The biggest and fastest-growing RWA category as of 2024–2025 is tokenized US government securities — Treasury bills and short-duration government bonds, held on-chain.

Why DeFi protocols want on-chain Treasuries:

DeFi protocols (Maker/Sky, Harvest Finance, Aave treasury) hold large pools of stablecoins. If those stablecoins sit idle in wallets, they don’t earn yield. But if the protocol deposits them in a tokenized Treasury fund — BUIDL, OUSG, BENJI — they earn approximately what T-bills pay (~4–5% in 2024), on-chain and programmatically.

This closed a significant gap in DeFi economics: before tokenized Treasuries existed at scale, DeFi yield came from volatile crypto activity (lending, liquidity provision). Tokenized Treasuries provide a stable, real-world yield floor that allows DeFi systems to hold reserves more efficiently.

Major tokenized Treasury products:

Product Issuer Blockchain AUM (peak 2024)
BUIDL BlackRock Ethereum $500M+
BENJI Franklin Templeton Stellar, Polygon $400M+
OUSG / USDY Ondo Finance Ethereum, Solana $300M+
Short Duration Bond Fund WisdomTree Ethereum, Stellar $100M+

The total tokenized government securities market hit $2 billion+ in 2024 — tiny relative to the total Treasury market, but growing rapidly from near-zero in 2022.

What BlackRock’s BUIDL Actually Is

BUIDL (BlackRock USD Institutional Digital Liquidity Fund) is a registered investment fund under SEC rules, not a crypto protocol. Its key characteristics:

  • Underlying assets: Short-term US Treasury bills and cash equivalents — this is a money market fund
  • Token standard: ERC-20 on Ethereum, managed by Securitize as transfer agent
  • Yield distribution: Daily USDC distributions to BUIDL token holders
  • Access: Restricted to qualified institutional buyers (minimum $5M investment); KYC required
  • Custodian: BNY Mellon holds the physical Treasuries
  • Transfer: Token transfers restricted to whitelisted wallets; not freely tradeable like a standard ERC-20

Why it matters beyond the product itself: BlackRock launching BUIDL validated that the SEC’s existing mutual fund regulatory framework could accommodate blockchain-native products. BUIDL is a conventional money market fund — with all the investor protections that implies — that happens to settle and transfer on Ethereum. The blockchain is the rails, not the product.

What Doesn’t Work Yet

Honest accounting of RWA tokenization’s current limitations:

Retail access is largely theoretical. Most operational tokenized assets are restricted to accredited investors or qualified institutional buyers. The vision of a retail investor holding $100 of tokenized Treasury bills in a self-custody wallet remains mostly conceptual in 2025, despite the technology working.

Legal uncertainty in multiple layers. When you tokenize a real estate property in the US, the token ownership must connect to actual legal property title through multiple layers: SPV structure, state-specific property law, securities law (if the token is a security). Every jurisdiction adds complexity. Courts have not fully resolved what happens in bankruptcy or dispute scenarios.

Liquidity is smaller than it appears. BUIDL has a large AUM, but secondary market trading of BUIDL tokens is among a small group of whitelisted counterparties. The tokenized real estate sector has token secondary markets where individual properties may not see a trade for weeks. “Token” doesn’t automatically mean “liquid.”

Stablecoin dependency. Most tokenized yield products pay distributions in USDC or USDT — which means one layer of centralized stablecoin risk sits between the investor and their yield regardless of whether the underlying is a US Treasury.

The Bigger Picture

RWA tokenization is solving a set of real institutional problems: settlement efficiency, collateral mobility, and on-chain yield. The large institutional players are doing it because it works for specific use cases today, not because of speculative future applications.

The retail and fractional-ownership narrative — “anyone can own a slice of a skyscraper” — is theoretically interesting but practically distant given regulatory requirements for securities offerings in most jurisdictions.

The trajectory is toward a two-tier system: institutional-grade tokenized assets operating within traditional regulatory frameworks (like BUIDL), and a longer-horizon work-in-progress for retail-accessible fractional ownership once legal frameworks catch up.

The $16 trillion market estimates that circulate in crypto media are the outer bound of what’s theoretically possible when you include every global asset class. The realistic 2030 target — and even achieving it would be transformative — is probably $2–4 trillion, concentrated in government securities, private credit, and real estate, predominantly institutional.

Related Glossary Terms

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