UK-based Monument Bank tokenized £250 million in real customer deposits on Cardano’s Midnight protocol in early 2026 – the first time a regulated bank has moved live customer funds onto a privacy-preserving blockchain infrastructure. That’s not a pilot announcement or a whitepaper commitment. That’s £250 million of actual deposits, shielded via zero-knowledge proofs, running on a live mainnet.
The development signals something quieter but more consequential than most headlines captured: regulated financial institutions are no longer just watching blockchain experiments from the sidelines. They’re looking for infrastructure that meets their compliance requirements – and Midnight is the first protocol purpose-built to offer it.
Midnight
Monument Bank
Monument is set to become the first UK-regulated bank to tokenize retail customer deposits on a public blockchain — representing interest-bearing savings as digital tokens while remaining fully backed, redeemable in GBP, and protected under existing… pic.twitter.com/Uonj2jqcHM
— Midnight Foundation (@midnightfdn) March 25, 2026
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What Is Midnight and Why Does It Matter to Banks?
Midnight launched on mainnet in late 2025 as a partner chain – think of it as a specialized lane running alongside Cardano’s main highway, built for a specific kind of traffic. Its core mechanism is zero-knowledge proofs (zk-SNARKs), a cryptographic technique that lets one party prove something is true without revealing the underlying data. Applied to finance, that means a bank can prove a transaction is compliant without exposing the transaction details to the public ledger.
This is architecturally different from privacy coins like Monero or Zcash, which hide everything by default. Midnight uses what its developers call “rational privacy” – users selectively disclose data to auditors, regulators, or counterparties as needed, while keeping it shielded from everyone else. For a bank, that distinction is everything. Regulators need to see the data. Competitors don’t.
The protocol uses a dual-token system: Knight for public governance, Dust for private transaction fees. Smart contracts are written in Compact, a TypeScript-friendly language designed to lower the development barrier for enterprise teams.
Nine major finance and tech firms are already running Midnight nodes, including Worldpay – which is exploring USDG stablecoin merchant payments – and Bullish, which is building proof-of-reserves ZK layers on top of the infrastructure. This is not a theoretical ecosystem. It is a functioning one. Those interested in Cardano’s broader institutional momentum will recognize this as part of a larger pattern.
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The Compliance Problem Midnight Could Solve
Public blockchains like Ethereum expose every transaction to every participant. That’s fine for retail DeFi. It’s a structural problem for banks. A correspondent bank executing a large FX settlement on a public chain is broadcasting its order flow to every competitor with a node – the blockchain equivalent of trading on a glass desk.
Midnight addresses three requirements that regulated institutions need simultaneously: transaction privacy from competitors, verifiable compliance for regulators, and programmable logic for automating KYC/AML checks inside smart contracts. Ethereum and Solana don’t offer this natively. Midnight was built specifically to provide all three in one stack.
Privacy does not have to be absolute or absent…@MidnightNtwrk introduces a way to work with public and private assets side by side.
Available now to explore in Lace!
Midnight mainnet is under active development. Features may change, which IOG does not control. For… pic.twitter.com/liPWEbYbyb
— lace.io (@lace_io) April 1, 2026
The regulatory backdrop makes the timing relevant. MiCA is now live across the EU, establishing compliance frameworks that push institutional crypto activity toward auditable, privacy-respecting infrastructure rather than fully transparent public chains. GDPR creates additional friction for banks storing customer transaction data on public ledgers. Midnight’s selective disclosure model maps directly onto both frameworks – a bank can grant a regulator cryptographic access to transaction data without posting it to a public ledger. Charles Hoskinson has described Midnight’s potential plainly: adding it to XRP DeFi, he argued, “is going to blow the legacy banks out of the water.”
The ambition extends further – Hoskinson has proposed Midnight as a shared privacy layer for both Bitcoin and the XRP Ledger, targeting the $10 trillion real-world asset tokenization market. Understanding the broader security pressures facing crypto infrastructure helps explain why privacy-preserving layers are attracting this level of institutional attention right now.
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