Digital Asset Infrastructure for Banks and Credit Institutions
Digital asset infrastructure for banks is the engineering layer between a bank's existing channel and the regulated crypto rails it rents: in-app trading and custody under a MiCA Article 60 notification, staking with per-customer reward records, credit against pledged crypto marked continuously, and euro stablecoin balances distributed from a licensed issuer, delivered inside the bank's own governance.
Under MiCA, a credit institution can provide crypto-asset services on the authorisation it already holds: Article 60 gives banks a notification path, 40 working days, with a completeness check rather than a merits approval. So for most banks the licensing question is settled, and what remains is engineering.
Digital asset infrastructure for banks is the layer between the channel a bank already runs (its app, its core ledger, its controls) and the crypto rails it rents (custody technology, execution venues, validator operators). In practice it means order and position records reconciled per customer, key governance a risk committee approves, per-customer staking reward records, and compliance wiring that produces its own evidence.
Protofire builds that layer. We are an engineering firm with 250+ projects shipped since 2016 across 60+ networks and 95+ protocols, and the custody, attestation, and on-chain operations underneath a bank-grade product are systems we already run in production.
The digital-asset stack inside a bank's existing channel
The bank's channel and authorisation sit on top, rented rails below, and the engineered layer between them is where the product lives.
The bank's app and brand
Core integration & customer ledger
Custody & key governance
Venue & liquidity connectivity
Product rails
Compliance evidence chain
Monitoring & response
Who this is for
We build for four bank profiles. A retail or universal bank adding spot crypto trading and custody inside the app its customers already log into, on the banking authorisation it already holds. A central institution or group IT provider serving a network of legally independent member banks, building the capability once and activating it bank by bank.
A private bank or broker extending crypto custody it operates today with staking and Lombard-style credit against pledged crypto. And a bank that needs euro stablecoin balances in its product, distributed from a licensed issuer rather than issued in-house. The common thread is that the authorisation, the customer relationship, and the channel already exist; the digital-asset layer has to be engineered into them.
Brokers that operate under a CASP authorisation rather than a banking licence are covered on the CASPs and crypto exchanges page.
The regulatory position
Less than most bank boards assume, and the details are specific. For trading and custody, MiCA Article 60 lets a credit institution notify its regulator at least 40 working days before providing crypto-asset services; the review is a completeness check, with no power to refuse on the merits.
Staking is not a listed crypto-asset service, but ESMA Q&A 2067 (20 June 2024) treats staking-as-a-service as ancillary to custody, so custody obligations follow it, and Article 75(8) keeps the institution liable for client crypto-asset losses attributable to it. The lending itself sits outside MiCA scope as the rules stand in 2026 (Recital 94); MiCA gives no passport for it, so the loan runs on the bank's existing credit permissions under each country's credit and consumer-protection rules.
And a euro e-money token can be put in the product by contracting a licensed issuer, though distributing and custodying a third-party EMT is itself a crypto-asset service, and Article 50 bars passing any holding-linked yield to the client. On top of all of it sit DORA and the recast Transfer of Funds Regulation.
The regulation decides which products may exist. What it does not supply is the operational half: consent flows, per-customer records, segregation, and evidence.
What we build for banks
We build the engineered layer, and we operate it after launch. For custody, Safe multisig deployment and Fireblocks integration put key governance under policies a risk committee approves; we are an official Safe Guardian with $2B+ secured across 120+ networks.
For the compliance chain, compliance integration wires KYC, screening, and Travel Rule data flows into the bank's existing stack. For staking, we run validator infrastructure and build the per-customer reward attribution the rented stack does not produce: operators report per validator, while the bank's statements and tax reporting need rewards attributed per customer in its own core.
For credit against crypto collateral, white-label lending provides the collateral marking and liquidation machinery on a hardened base. Proof of Reserve attests balances continuously, oracle integration prices collateral on manipulation-resistant feeds, and managed on-chain operations keeps the whole stack watched 24/7. Before any of it faces customers, smart-contract audit hardens what will hold client assets.
Start from a proven blueprint
Our blueprint library documents digital-asset architectures already running at regulated institutions: the regime that permits each one, named institutions operating it, and which layers a bank owns, rents, or has us build. Six are drawn for banks:
In-app crypto trading and custody
→Add spot crypto trading and custody inside your existing app, on the authorisation you already hold.
Network rollout for member banks
→Build crypto trading once centrally, then switch it on bank by bank across your network.
Client staking on custodied assets
→Add staking on top of the custody you already run, with a per-customer reward record built in.
Credit against a client's crypto
→Lend fiat or stablecoins against pledged crypto, marked and margined continuously.
Euro e-money token distribution
→Add a euro stablecoin to your product on a licensed issuer's rails, with no issuance licence of your own.
On-chain threat monitoring
→Answer defined on-chain threats in seconds from a pre-agreed matrix, bounded by limits you set.
An engineering partner a bank can put through procurement
Protofire is an engineering-led blockchain firm with 250+ projects shipped since 2016, across 60+ networks and 95+ protocols, with zero vulnerabilities across delivered projects. We are an official Safe Guardian, with audited multisig custody securing $2B+ across 120+ networks, the key-governance layer a risk committee signs off.
We are a core contributor to Chainlink and built enterprise-scale Proof-of-Reserve infrastructure attesting billions in reserves on-chain, the reserve-assurance layer an auditor stands behind. We helped build the world's first BaFin-licensed DEX for tokenized real-world assets, so a regulated, KYC-gated venue is work we have shipped, and we maintain Solhint, the Solidity linter used by over a million developers. The custody half and the evidence half of a bank's digital-asset stack are both systems we have built and operate in production.
“The bank keeps the customer, the app, and the authorisation; the custody technology, venues, and validators are rented; the layer in between is what has to be engineered: the integration, the per-customer records, and the controls.”
We built and operate real-time proof-of-reserve infrastructure at enterprise scale, covering billions in reserves, the reserve-assurance layer a bank's auditor stands behind.
As an official Safe Guardian, we deploy audited Safe contracts as institutional-grade custody, with separated operator and risk roles so no single key can move client assets.
We helped build the world's first BaFin-licensed DEX for tokenized real-world assets, with KYC and multi-tier permissioning, regulated-venue engineering under a German licence.
FAQ
Can a bank offer crypto trading and custody without a new licence?
What does a bank build in-house and what does it rent?
How does a bank add staking to crypto custody it already runs?
Can a bank lend against crypto collateral?
Can a bank offer euro stablecoin balances without issuing its own token?
How does a banking network roll out crypto across member banks?
Reviewed by Luis Medeiros, Field CTO at Protofire. Last reviewed: August 2026.