A US dollar bond issued natively onchain by the Republic of the Marshall Islands can now be posted as collateral for repo and derivatives margin on Membrane Labs’ institutional lending platform.
MoneyTurkey Derivatives Desk | 11 November 2026
Key points
- Membrane Labs has integrated USDM1, a dollar-denominated sovereign bond issued onchain by the Marshall Islands, into its credit and lending infrastructure, Securities Finance Times and FOW reported.
- USDM1 is secured one-for-one by short-duration US Treasury instruments, according to both outlets.
- Eligible trading desks, borrowers, lenders and custodians can use it for bilateral lending, repo and collateral management, including in derivatives.
What happened
Membrane Labs, a US institutional credit platform, said it has added USDM1 to the assets it accepts for collateralised financing, alongside stablecoins and tokenised fund interests, Securities Finance Times reported. FOW covered the integration on 11 November, describing M1X Global, the coordinating agent for the bond, as having brought USDM1 into Membrane’s infrastructure for repo and derivatives collateral.
The bond is issued by the Republic of the Marshall Islands, a small Pacific state, rather than by a bank or fund manager. That makes it a sovereign debt instrument that lives on a blockchain from the start, not a tokenised copy of an existing bond.
According to Securities Finance Times, the firms said USDM1 previously served as the sovereign securities leg in an onchain repo trade involving Virtu Financial and Tradeweb on the Canton Network, and in an institutional repo on the Stellar network that used automated hourly rolls through overnight and weekend periods. Custody providers named in the report include Anchorage Digital Bank, BitGo Bank & Trust and tZERO’s broker-dealer custody arm.
What they said
“Integrating USDM1 gives institutional counterparties access to a new form of sovereign collateral across Membrane’s prime services ecosystem,” Carson Cook, founder and chief executive of Membrane Labs, said, according to Securities Finance Times.
“In institutional financing, high-quality sovereign collateral is fundamental as margin, as a liquidity management tool and as working balance-sheet inventory,” said Mark Lurie, co-founder and chief executive of M1X Global.
Why it matters
Derivatives traders need eligible collateral to post as margin, and short-dated Treasuries are the standard choice. A bond that is backed by Treasuries but can move and settle onchain around the clock lets counterparties shift margin outside banking hours, which is the gap the hourly weekend repo rolls were meant to show.
It also puts a micro-state issuer into institutional collateral pipes that big outlets rarely cover. Neither report gave figures for the size of the issue or how much has been financed against it so far.
What to watch
- Whether Membrane clients publish volumes for USDM1 repo and margin use
- Acceptance of the bond by clearing houses or exchange margin schedules
- Further sovereign issuers following the Marshall Islands onto blockchain rails
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For information only. Not investment advice.
