Anchorage Digital Bank has expanded custody support for MXNB, a Mexican peso stablecoin linked to Bitso, across six blockchain networks: Arbitrum, Base, Ethereum, Polygon, Avalanche, and Arc. The change gives institutional clients a way to hold the peso-backed token in multiple onchain environments through a single banking relationship.
The broader arrangement also adds two U.S. dollar stablecoins to Bitso’s side of the partnership. Bitso has integrated USDPT and USAT, while Anchorage acts as issuer and custodian for both assets. Together, the companies are positioning the setup as regulated custody infrastructure spanning both sides of the U.S.-Mexico payments corridor.
Multi-chain custody for MXNB
Under the expansion, MXNB custody is now available through Anchorage across six supported networks. The list includes Arbitrum, Base, Ethereum, Polygon, Avalanche, and Arc, extending the asset beyond a single-chain setup and allowing institutions to choose among different settlement environments.
The emphasis is on operational access rather than a change to the stablecoin’s peg: MXNB remains a Mexican peso-backed token. By supporting several networks at once, the custody offering is intended to simplify how institutions access the asset while keeping custody inside a regulated banking framework.
Bitso adds USDPT and USAT
At the same time, Bitso has added two dollar-denominated stablecoins, USDPT and USAT. According to the source article, the assets are issued by Western Union and Tether, and Anchorage serves as both issuer and custodian for them.
That means the partnership now covers a peso stablecoin on one side and two dollar stablecoins on the other. The structure is meant to provide regulated custody options for institutions working with digital dollars and digital pesos in the same broader payments corridor.
Focus on the U.S.-Mexico remittance route
The companies are tying the expansion to the U.S.-Mexico remittance market, where Bitso says its infrastructure already handles a significant portion of volume. The article does not give a fresh numerical update, but it frames the corridor as a core use case for the stablecoin custody buildout.
By placing regulated custody around assets tied to both currencies, the partnership is presented as a way to support cross-border payment flows that rely on blockchain-based settlement. The central idea is to make movement between the two sides of the corridor more compatible with institutional compliance and custody requirements.
What the partnership is trying to improve
The stated goal is to modernize cross-border payments through blockchain settlement, with continuous availability and traceability cited as key advantages. At the same time, the article notes that costs and processing times still depend on the network being used, so the practical experience can vary across chains.
For now, the confirmed next step is the live availability of MXNB custody on six blockchains alongside Bitso’s addition of USDPT and USAT. More broadly, the announcement highlights an attempt to build regulatory-ready infrastructure for institutional stablecoin use in the U.S.-Mexico corridor, rather than introducing a new claim about consumer adoption or transaction volumes.
Source: news.bitcoin.com