UK Digital Bank Pushes Tokenized Deposit Launch to November
TREE NEWS reports: Monument Bank, a UK-licensed digital bank, has postponed the retail rollout of its tokenized deposit product to November, citing difficulty in finding a local crypto custodian that satisfies both Financial Conduct Authority (FCA) requirements and the bank’s zero-knowledge proof (ZKP) technical needs. The bank has reportedly turned to a Canada-based custodian that holds FCA-equivalent permissions to bridge the gap.
The Custody Bottleneck Nobody Talked About
Tokenized deposits — bank liabilities recorded on a distributed ledger — sit in a regulatory gray zone that pure stablecoins avoid. Unlike a stablecoin issued by a non-bank entity, a tokenized deposit remains a balance-sheet obligation of a chartered bank, which means the custody of the underlying keys and the privacy layer protecting transaction data fall squarely under banking supervision. Monument’s ZKP requirement adds a second constraint: the bank wants to prove transaction validity without exposing customer balances on-chain, a design choice that few custodians are equipped to support.
The shortage of UK-domiciled custodians able to meet both conditions illustrates a structural gap. Most institutional-grade crypto custodians are optimized for exchange-traded or fund-held assets, not for bank-issued deposit tokens where the ledger is permissioned and privacy is a compliance prerequisite rather than a feature.
Why This Matters for the Broader RWA Thesis
- Tokenized deposits are the quiet giant of RWA. While tokenized treasuries and private credit dominate headlines, deposit tokens could eventually represent the largest on-chain asset class by notional value if major banks adopt them.
- Regulatory clarity is not the same as operational readiness. The FCA has signaled openness to tokenized deposits, but the supporting infrastructure — custody, key management, privacy tooling — lags behind policy.
- Cross-border workarounds are emerging. Monument’s pivot to a Canadian custodian with reciprocal permissions suggests banks may route around domestic infrastructure gaps rather than wait for them to close.
What to Watch
A November launch would make Monument one of the first UK banks to offer retail-facing tokenized deposits, a meaningful test case for whether the model can scale beyond pilot programs. Key questions remain: whether the Canadian custodian arrangement satisfies FCA supervision in practice, how the ZKP layer handles audit and reporting obligations, and whether other UK banks follow or wait for a domestic custody solution to mature.
If Monument succeeds, it could pressure UK regulators and infrastructure providers to accelerate domestic custody frameworks. If it stumbles again, the delay narrative may harden into skepticism about whether tokenized deposits are a near-term product or a longer-horizon bet.
