Anchorage and Bitso deepen US-Mexico stablecoin corridor

Anchorage Digital on Oct. 27 announced an expansion of its partnership with Bitso that places Anchorage Digital Bank custody under both sides of the US-Mexico stablecoin corridor, according to an Anchorage press-room release [1]. Per that primary, MXNB, the Mexican peso stablecoin, is now custodied by Anchorage Digital Bank, N.A., across six blockchains, while Bitso has listed USDPT and USAT, the US dollar stablecoins of Western Union and Tether, both issued and custodied by the same bank [1]. Anchorage describes itself as "home to America's first federally chartered crypto bank"; the legal limit for readers is that today's record is that company announcement, not an independent audit of corridor volumes or a regulator go-live order [1].

How the corridor stack is built

Custody here means a regulated bank holding the tokens for clients rather than leaving issuance and safekeeping split across unlicensed wallets [1]. On the peso side, the release says MXNB sits under Anchorage Digital Bank across Arbitrum, Base, Ethereum, Polygon, Avalanche, and Arc, so one custody relationship covers every network where the page says MXNB trades and settles [1]. On the dollar side, Bitso's listing of USDPT and USAT puts Western Union and Tether dollar stablecoins on the same Latin American digital-asset platform as MXNB, with both tokens issued and custodied by Anchorage Digital Bank [1].

The page frames the US-Mexico remittance corridor as one of the largest cross-border payment flows, moving tens of billions of dollars each year, and states that 15% of this volume already flows through Bitso's infrastructure [1]. Much of the rest, it says, still travels over correspondent banking, wire transfers, and cash pickup networks [1]. Product claims on the Bitso side are narrow as written: users in Mexico can buy and sell USDPT with pesos in the Bitso app, and Western Union agents with Bitso Business accounts can convert between USDPT and other supported currencies [1]. Dollar and peso stablecoins, the release adds, now sit side by side on Bitso as well as on Anchorage [1].

What the principals said

Nathan McCauley, CEO and co-founder of Anchorage Digital, said the US-Mexico corridor is "where stablecoins stop being a thesis and start moving real money at scale," and that by custodying MXNB across six chains and standing behind USDPT and USAT on Bitso, Anchorage is "the institutional custody layer on both sides of that flow" [1]. Ben Reid, head of stablecoin at Bitso, said trust matters for clients moving dollars and pesos onchain, and that with "GENIUS-compliant" stablecoins USDPT and USAT supported on Bitso and Anchorage Digital Bank custodying MXNB, clients can access the dollar-peso corridor fully onchain, "powered by Mexico's leading digital asset company and backed by a federally chartered bank" [1]. The GENIUS label appears in Reid's quote on the Anchorage page; this piece does not independently verify statute status for either token [1]. Bitso has not issued a separate confirmation in the record used here [1].

The objection

This is a company partnership announcement about custody and listings, not a claim that the entire remittance corridor has moved onchain or that Anchorage is the only custodian any bank may use [1]. The release does not publish chain-level TVL, fee schedules, eligibility screens, or a dated nationwide migration away from wires and cash pickup [1]. The "tens of billions" and "15%" figures are Anchorage's framing of the corridor and of Bitso's share of that flow; they are not restated here as Le Coin measurements [1]. Until a filing, Bitso product page, or bank disclosure names checkable outstanding supply, settlement volumes, and operating rules, the public record is the custody-and-listing map itself.

The tell

In Le Coin's view, the tell is whether issuers, banks, and payment firms can open a checkable custody path for MXNB on the six named chains and for USDPT/USAT on Bitso under Anchorage Digital Bank with disclosed operating rules that match today's press map [1]. A second tell is whether the corridor's "tens of billions" and Bitso's stated 15% share show up in independently reported remittance or platform data rather than press language alone [1]. Neither is settled by today's release.

Sources

1. Anchorage Digital press-room, "Anchorage Digital Becomes the Custody Layer for the US-Mexico Stablecoin Corridor Through Expanded Bitso Partnership," Oct. 27, 2026, https://www.anchorage.com/press-room/anchorage-digital-becomes-the-custody-layer-for-the-us-mexico-stablecoin-corridor-through-expanded-bitso-partnership ; Anchorage Digital / Anchorage Digital Bank, N.A. × Bitso; MXNB custodied across Arbitrum, Base, Ethereum, Polygon, Avalanche, Arc; Bitso listed USDPT (Western Union) and USAT (Tether), both issued and custodied by Anchorage Digital Bank; corridor tens of billions each year; 15% through Bitso infrastructure; Bitso Mexico USDPT buy/sell; Western Union Bitso Business conversion; Nathan McCauley; Ben Reid (GENIUS-compliant as stated on page); accessed Oct. 27, 2026, 11:25 a.m. ET.

Holding the Corner.

Not financial advice.