BCB report on Drex proof-of-concept project Phase 1 (BCB)(Updated with correct link)
Banco Central do Brasil (BCB) published a report on the main developments in the first phase of its Drex central bank digital currency (CBDC) proof-of-concept work, which took place between July 2023 and October 2024. (None of the Drex tests involved real clients or assets, but rather fictitious ones.) The report highlighted the trilemma of finding a solution that balances decentralization, programmability, and privacy issues at the same time, while being compliant to the Brazilian legal framework. I’m still digesting a Google Translate version (it’s only available in Portuguese) of the 73-page report, and may come back with more detail later. [Read more at the BCB]
FDIC Reverses U.S. Crypto Banking Policy That Demanded Prior Approvals (CoinDesk)
The U.S. Federal Deposit Insurance Corp. (FDIC) will no longer instruct banks to get prior sign-off before they engage in crypto-related activities — a standard that was set in 2022 that effectively blocked FDIC-supervised institutions from engaging in such activities as they waited for approvals that never came. Earlier in March 2025, the Office of the Comptroller of the Currency (OCC) rescinded its similar 2022 guidance. [Read more at the FDIC and OCC]
Interoperability of blockchain systems and the future of payments (NY Fed)
The New York Fed published research that provides empirical evidence of limited interoperability in crypto-asset markets. It examined the price relation between native and bridged USDC and USDT stablecoins on multiple blockchains and bridges. Stablecoins are good candidates for studying interoperability because they are nonspeculative by design (each is intended to represent $1), and in principle, a bridged representation of an asset represents value that is identical to the original asset. A higher degree of interoperability in blockchain systems would allow traders to compress any divergence in prices between stablecoins and their bridged representations and push the correlation between the prices of two stablecoins closer to one. However, it found surprisingly high price variation across all of them, suggesting limited interoperability. [Read more at the NY Fed]

And just a reminder that I produce a monthly digest of central bank digital currency (CBDC) developments exclusively for the official sector. So (only) if you work at a central bank, ministry of finance or international financial institution (e.g., the BIS, IMF, OECD, World Bank) and who would like to receive it by email on the first business day of every month, please DM me on LinkedIn or email me at john@kiffmeister.com.














