In a significant step toward interoperability between ecosystems, Money On Chain has announced the launch of its stablecoin, DOC (Dollar On Chain), on Arbitrum, one of Ethereum’s leading Layer 2 networks. This is not just a strategic expansion of the protocol—it makes DOC a truly multichain stablecoin, unlocking new opportunities for both Bitcoin and Ethereum users.

What is Arbitrum and why does it matter?

Arbitrum is a Layer 2 network that enhances Ethereum’s capabilities using rollup technology. It enables faster and cheaper transactions while maintaining the security of the main Ethereum chain.

With millions of active users and a booming DeFi infrastructure, Arbitrum has become a fertile ground for stablecoins, DEXs, lending, payments, and more. The arrival of DOC, 100% backed by Bitcoin, introduces a truly decentralized, fiat-free alternative to this ecosystem.

What does DOC’s arrival on Arbitrum enable?

Thanks to the integration between Rootstock—the Bitcoin sidechain compatible with EVM where Money On Chain operates—and LayerZero, assets can now move smoothly across networks. Specifically, Stargate is used—an advanced crosschain bridge that enables low-cost, seamless transfers of DOC from Rootstock to Arbitrum.

First came USDT to Rootstock. Now it’s DOC’s turn to go the other way: from Rootstock to Arbitrum.

This expansion translates to:

  • An active DOC/USDT pool on Uniswap (Arbitrum): Users can already trade DOC directly on this network via Uniswap and other aggregators (see the example using OKU Trade in the Money On Chain wiki).
  • Low-cost crosschain transfers: Through Stargate and other aggregators, DOC can move between Rootstock, Arbitrum, and other compatible blockchains quickly and affordably.
  • Increased visibility and potential integrations: DOC’s presence on Arbitrum brings it closer to leading protocols like Compound, Aave, and Balancer, positioning it as a solid alternative to centralized stablecoins.

What are DOC key differentiators?

Unlike many popular stablecoins, DOC:

  • It is 100% collateralized with bitcoin, not with physical dollars or debt instruments.
  • It is issued by smart contracts on Rootstock, without the need for custodians.
  • Has maintained a 1:1 peg to the dollar since 2019.
  • Can be used without geographic restrictions or KYC.

This level of transparency and decentralization is becoming increasingly valuable in a context where centralized stablecoins face regulatory risks, censorship, or lack of clarity about their reserves.

What does this mean for the Bitcoin ecosystem?

DOC’s arrival on Arbitrum is much more than a technical upgrade. It represents a real bridge between Bitcoin and Ethereum. Until now, most DeFi projects have ignored Bitcoin as a base asset. With DOC on Arbitrum, users can now interact with a stablecoin directly derived from BTC, without relying on synthetic derivatives or custodial tokens.

And they can do so in ecosystems where liquidity, use cases, and adoption are already established.

The integration of DOC on Arbitrum turns this stablecoin into a global multichain player, combining:

The strength of bitcoin as collateral and the versatility of Ethereum’s ecosystem

With this expansion, Money On Chain solidifies its position as a pillar of Bitcoin-based, non-custodial finance. And DOC takes one more step toward becoming the leading decentralized stablecoin.

Want to start using DOC on Arbitrum?

DOC is no longer just a Bitcoin-based stablecoin. It’s now a cross-chain gateway—while still keeping you in control of your keys.