A group of seven central banks, including the Federal Reserve, detail how a digital currency should be designed, including its principles and core features
Context & Ripple Effects
This report is the moment central bank digital currency work moved from experimentation to shared doctrine. The arc runs from IBM's informal talks with the Federal Reserve about blockchain-based digital cash in 2015, through the G7 central bank task force France convened to study governing cryptocurrencies like Libra in 2019, to Mastercard launching a simulation tool a month earlier that let central banks test issuing digital versions of their currencies before committing.
By publishing joint principles and core features rather than a pilot announcement, the seven banks — the Federal Reserve among them — are defining what any credible retail CBDC must look like, setting the template that later work like [[a:1156766|the group's development of 33 API functionalities to test 30+ online, offline, and in-store use cases]] builds directly on.
First-order effects
- Central banks now have a common reference specification for CBDC design, which turns Mastercard's simulation tooling and similar test environments into compliance checks against an agreed feature set rather than open-ended experiments.
- The Federal Reserve's participation signals that US engagement has shifted from informal exploratory conversations toward codified design positions.
Second-order effects
- Commercial banks facing a potential direct central bank liability in consumers' hands gain a defined design debate to influence — a pressure point visible later when ten major banks including Bank of America, Deutsche Bank, and UBS launched their own early-stage project to explore G7-currency stablecoins as a private-sector alternative.
- Payment networks and technology vendors like IBM and Mastercard can now productize against published requirements instead of guessing at each central bank's intent, accelerating the vendor market around CBDC infrastructure.
Third-order effects
- If the pattern holds, CBDC design converges across jurisdictions from national experiments toward interoperable standards — the same central bank group moving from principles (2020) to concrete API functionality testing (2023) shows standards-building as the operating mode.
- The end state being sketched is a two-layer system where state-issued digital currency sets the policy baseline while bank-issued stablecoins occupy the private-market layer, forcing regulators to define the boundary between the two.
The trend: Central banking is moving from debating whether digital currencies should exist to jointly standardizing how they are built, with private issuers positioning alongside rather than instead of them.