Blockchain Goes Multi-Chain: Coinbase Brings Ripple's RLUSD to XRP Ledger, Base and Ethereum
The most important blockchain story of the week is not a new chain. It is an old stablecoin getting a much bigger front door. On October 28, 2026, Ripple and Coinbase announced a partnership that puts Ripple USD (RLUSD) on Coinbase across three platforms — Coinbase Prime, Coinbase Exchange and the Coinbase retail app — with deposits and withdrawals supported on three blockchains: the XRP Ledger, Ethereum and Coinbase's own Base network. For a dollar-backed token that launched in December 2024, that is the difference between being available somewhere and being available where American retail traders and institutions already keep their money.
Start with what actually launched. From October 28, retail and institutional clients can trade and manage RLUSD through Coinbase Prime, Coinbase Exchange and the Coinbase retail app, with 1:1 conversion from US dollars and other supported US-dollar-denominated stablecoins into RLUSD. That 1:1 point matters because RLUSD is presented as a regulated, enterprise-grade stablecoin, redeemable for US dollars and backed by reserves including US dollar deposits, short-term US Treasuries and other cash equivalents. It is not pitched as a yield product or an algorithmic experiment; its selling point is boring on purpose — a dollar token with a clear reserve story, now sitting inside the largest US crypto exchange's plumbing.
The multi-chain part is where the blockchain story lives. A stablecoin that exists on only one network forces every user onto that network's fees, speed and wallet ecosystem. RLUSD on Coinbase supports deposits and withdrawals across the XRP Ledger, Base and Ethereum, so a user can move the same dollar token between three very different blockchain environments: the XRP Ledger, built for payments; Ethereum, the largest smart-contract network; and Base, Coinbase's Ethereum Layer-2, where Ripple says it will provide liquidity to support RLUSD's growth. That flexibility is the practical meaning of "multi-chain" — not three separate tokens, but one token usable across three rails, with the exchange handling the conversion and custody in between.
The numbers frame the scale honestly. Ripple's own announcement says RLUSD has surpassed $2.4 billion in market capitalization since its December 2024 launch, driven by adoption across exchanges, payments, institutional markets and on-chain finance. Independent coverage on the same day put the figure at about $2.6 billion. The gap between those two figures is a reminder to read market-cap numbers as snapshots from different data providers on different days, not as a single audited total — but either way, RLUSD is now a multi-billion-dollar stablecoin, not a test token. Its growth did not happen in isolation: earlier in October, Ripple and Cross River Bank announced a deal, on October 15, linking RLUSD to a bank network so fintech firms could switch between US dollars and RLUSD using established banking infrastructure on the XRP Ledger. The Coinbase deal is the retail and institutional distribution layer on top of that banking layer.
Timing also matters. The Coinbase launch came in the same week Ripple received final approval from the US Office of the Comptroller of the Currency to launch a national trust bank, bringing RLUSD under federal oversight, according to coverage of the announcement — and in the same week as Ripple Swell in New York, where Ripple's Jack McDonald, SVP of Stablecoins, and Coinbase Institutional co-CEO Brett Tejpaul discussed the next phase of institutional stablecoin adoption on October 28. Coverage also notes a Moody's A2 rating for RLUSD. None of that makes a stablecoin risk-free — reserve quality, redemption speed in a stress event and the exact legal treatment of holders still matter, and they are exactly what a trust-bank charter and a credit rating are supposed to discipline — but the direction is unmistakable: regulated dollar tokens are moving from the edges of crypto into the centre of US exchange and banking infrastructure.
What is NOT included yet is just as important. Coinbase Global Exchange support, including using RLUSD as collateral, is expected to follow rather than launching on day one, and neither company gave a timeline for it. Availability also depends on jurisdiction and product — the announcement should not be read as a promise that every feature is available to every customer everywhere. That restraint is healthy: a stablecoin rollout that over-promises on collateral use before its risk systems are ready would be worse than a staged one.
What to watch next, in order. First, whether Global Exchange collateral support arrives, and on what terms — that is the step that turns RLUSD from a trading and payments token into a piece of exchange margin infrastructure. Second, how deep RLUSD liquidity on Base actually becomes, since Ripple's promised liquidity provision there is the test of whether the multi-chain promise works in practice or only on paper. Third, whether RLUSD's market capitalization keeps climbing past the $2.4–$2.6 billion range now that Coinbase's retail and Prime users can reach it in one click. And fourth, how the trust-bank charter changes RLUSD's reserve reporting and redemption in practice. The blockchain industry spent years arguing about which single chain would win. RLUSD's Coinbase launch suggests a different answer: the winners may be the tokens that work across all of them.
FAQ
What did Coinbase and Ripple announce on October 28, 2026? A partnership bringing Ripple USD (RLUSD) to Coinbase Prime, Coinbase Exchange and the Coinbase retail app, with deposits and withdrawals on the XRP Ledger, Base and Ethereum, and 1:1 conversion from US dollars and supported dollar stablecoins.
What backs RLUSD? It is described as a regulated, enterprise-grade stablecoin, redeemable for US dollars and backed by reserves including US dollar deposits, short-term US Treasuries and other cash equivalents.
How big is RLUSD? Ripple says it has surpassed $2.4 billion in market capitalization since launching in December 2024; independent coverage on October 28 put it at about $2.6 billion — different snapshots, same multi-billion scale.
Why does multi-chain support matter? It lets users move the same dollar token across the XRP Ledger, Ethereum and Base instead of being locked to one network's fees and wallets, with Ripple providing liquidity on Base.
What is not available yet? Coinbase Global Exchange support, including using RLUSD as collateral, is expected to follow with no timeline given; availability also varies by jurisdiction and product.
What is the regulatory context? The launch came the same week Ripple received final OCC approval to launch a national trust bank, and coverage notes a Moody's A2 rating for RLUSD.
Is this the same as earlier RLUSD blogs? No. Earlier site coverage touched RLUSD ratings and custody angles; this blog covers the distinct October 28 Coinbase distribution launch across three blockchains.
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Related reading: https://zimbuck.com/blogs/426/Canada-Britain-and-America-Are-Writing-Stablecoin-Rules-at-the
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