UK-based Monument Bank tokenized £250 million of real customer deposits on Cardano’s Midnight protocol in early 2026 – the first time a regulated bank has moved its customers’ real funds to privacy-preserving blockchain infrastructure. This is not a pilot announcement or a white paper commitment. This represents £250 million in real deposits, protected by zero-knowledge proofs, running on a live mainnet.
This development signals something quieter, but more consequential than most headlines: regulated financial institutions are no longer content to watch blockchain experiments from the sidelines. They are looking for infrastructure that meets their compliance requirements – and Midnight is the first protocol purpose-built to deliver it.
Midnight
Monument Bank
Monument is set to become the first regulated bank in the UK to tokenize retail customer deposits on a public blockchain – representing interest-bearing savings in the form of digital tokens while remaining fully collateralized, redeemable in GBP and protected by… pic.twitter.com/Uonj2jqcHM
– Midnight Foundation (@midnightfdn) March 25, 2026
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What is midnight and why is it important for banks?
Midnight launched on mainnet in late 2025 as a partner channel – think of it as a specialized lane along Cardano’s main highway, built for a specific type of traffic. Its main mechanism is zero-knowledge proofs (zk-SNARK), a cryptographic technique that allows a party to prove something is true without revealing the underlying data. Applied to the financial sector, this means that a bank can prove that a transaction is compliant without exposing the details of the transaction 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 safe from everyone else. For a bank, this distinction is essential. Regulators need to see the data. This is not the case for competitors.
The protocol uses a dual token system: Knight for public governance, Dust for private transaction fees. Smart contracts are written in Compact, a TypeScript-compatible language designed to reduce development barriers for enterprise teams.
Nine major financial and technology companies already operate Midnight nodes, including Worldpay – which is exploring USDG stablecoin merchant payments – and Bullish, which is building proof-of-reserves ZK layers on top of infrastructure. This is not a theoretical ecosystem. It’s a working system. Those interested in the broader institutional dynamics of Cardano will recognize that this is 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. This is great for retail DeFi. This is a structural problem for the banks. A correspondent bank executing large FX settlement on a public chain broadcasts 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 to automate KYC/AML checks in smart contracts. Ethereum and Solana do not offer this natively. Midnight was specifically designed to deliver all three in one stack.
Confidentiality does not have to be absolute or absent…@MidnightNtwrk introduces a way of working side by side with public and private assets.
Available now to explore in Lace!
The Midnight mainnet is under active development. Features are subject to change, which IOG has no control over. For… pic.twitter.com/liPWEbYbyb
– lace.io (@lace_io) April 1, 2026
The regulatory context makes the timing relevant. MiCA is now operational across the EU, establishing compliance frameworks that push institutional crypto activity toward auditable, privacy-friendly infrastructure rather than fully transparent public chains. GDPR creates additional friction for banks that store customer transaction data in public ledgers. Midnight’s selective disclosure model applies directly to both frameworks: a bank can grant a regulator cryptographic access to transaction data without publishing it on a public ledger. Charles Hoskinson clearly described Midnight’s potential: adding it to XRP DeFi, he argued, “is going to blow up traditional banks.”
The ambition goes further: Hoskinson proposed Midnight as a shared privacy layer for Bitcoin and XRP Ledger, targeting the $10 trillion real-world asset tokenization market. Understanding the broader security pressures facing crypto infrastructures helps explain why privacy protection layers are currently attracting this level of institutional attention.
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The post Why Banks Are Exploring Cardano Midnight Privacy Protocol appeared first on 99Bitcoins.
