How Siemens Issued a €60 Million Bond on a Public Blockchain — And What It Proved

In August 2023, Siemens AG — one of the largest industrial conglomerates on earth, with revenues of over €75 billion — issued a €60 million digital bond directly on a public blockchain. No central securities depository. No T+2 settlement window. No paper-based intermediaries. The bond settled in one day instead of the industry standard five.

It was not a pilot program. It was not a proof of concept. It was a live, legally binding debt instrument issued by a Fortune Global 50 company — and it happened on the Polygon blockchain.

This is the story of how it worked, what it proved, and why it matters as a template for what's coming next.

Why Siemens — And Why Bonds?

Corporate bonds are an ideal tokenization candidate for a specific reason: they are fundamentally information. A bond is a promise — pay me X, I will return X plus interest by date Y. The value in the bond is the enforced promise, not any physical thing. When you strip away the legacy infrastructure surrounding that promise — the depositories, the custodians, the clearing houses, the correspondent banks — you're left with a smart contract. If X is received, distribute interest payments on these dates and return principal on this date.

Siemens issues commercial paper and bonds regularly as part of normal treasury operations. For their digital bond, they chose to work with DekaBank, DZ BANK, and Union Investment as investors — all established German financial institutions — and issue directly to them using blockchain settlement rather than going through the traditional Clearstream or Euroclear infrastructure.

What Made It Different

Previous blockchain bond experiments — and there were many, going back to 2017 — had one thing in common: they used private or permissioned blockchains. A group of known institutions would agree to share a ledger, reducing the number of reconciliation steps between their existing systems. The result was marginally more efficient but structurally identical to what already existed — a shared database with a new name.

Siemens chose a public blockchain. Polygon is a public, permissionless network — anyone can read it, and the settlement rules are enforced by decentralized infrastructure rather than a consortium of counterparties who agreed to behave. That distinction is significant for several reasons.

First, it means the bond's terms are publicly verifiable. Any counterparty — now or in the future — can confirm what the bond says, what has been paid, and what remains outstanding, without calling anyone or waiting for a document to be retrieved from a filing system.

Second, it means settlement is genuinely atomic. When the bond was purchased, the payment and the security token transferred simultaneously — delivery versus payment in a single transaction rather than a multi-step process involving multiple institutions confirming receipt across separate ledgers.

The Legal Foundation: Germany's eWpG

One of the most important — and least covered — aspects of the Siemens deal is the legal framework that made it possible. Germany passed the Electronic Securities Act (eWpG) in June 2021, explicitly recognizing blockchain-based securities as legally equivalent to traditional paper certificates. This gave Siemens the legal footing to issue without a physical certificate or a central securities depository acting as the official record-keeper.

The blockchain was the registry. The token was the security. Full stop.

This is the infrastructure gap that most RWA initiatives run into: technology can create and transfer tokens, but if the legal system doesn't recognize the token as the actual ownership record, you still need the paper trail. Germany solved that problem legislatively. The US is working toward the same recognition through the CLARITY Act and SEC guidance on digital securities — but as of 2026, Germany remains ahead of the US specifically on the question of blockchain-native securities issuance.

The Numbers That Mattered

The one-day settlement is not a minor operational improvement. In bond markets, settlement time directly correlates with counterparty risk — the time between trade execution and actual exchange of assets is a window during which either side can fail. Compressing that window from five days to one day reduces risk exposure by 80% on every single transaction. At the scale of global bond markets — $130 trillion outstanding — that is an enormous amount of latent risk that blockchain settlement can eliminate.

What It Proved — And What It Didn't

The Siemens bond proved that a Fortune Global 50 company could issue a legally binding debt instrument on a public blockchain, that regulated European financial institutions were willing to hold it, and that the settlement infrastructure worked as designed. Those were not small things to prove in August 2023.

What it didn't prove is scalability. A €60 million one-year bond between a small group of known institutional investors is a controlled environment. The harder questions — how does this work for secondary market trading among unknown counterparties? How does it handle investor KYC/AML at scale? How does it behave in a market stress event? — remain open. Siemens acknowledged this: the goal was to gain experience and demonstrate feasibility, not to replace the entire bond market.

What Came After

The Siemens deal opened a door that has been widening ever since. In 2024, KfW — Germany's state-owned development bank — issued €150 million in digital bonds using similar infrastructure. The European Investment Bank has issued multiple blockchain bonds. In 2023 and 2024, Hong Kong issued US$100 million and US$770 million in digital green bonds respectively. Moody's and Alphaledger completed a proof of concept in 2025 embedding credit ratings directly into tokenized securities on Solana.

The DTCC's announcement that it will launch tokenized settlement infrastructure for US securities in July 2026 is the logical end state of the path Siemens demonstrated. When the institution that clears $114 trillion annually moves to on-chain settlement, the experiment phase ends.

The Template

Every case study in this series will examine a different real-world implementation of RWA tokenization — what worked, what didn't, what it cost, what it proved, and what followed. Siemens is the right place to start because it established the template: a major institution, a real transaction, a public blockchain, a functioning legal framework, and a result that was unambiguously better than the alternative.

The template works. The question is no longer whether — it's how fast and at what scale.