Bitflow: How the Leading DEX on Stacks Is Bringing Bitcoin Trading Onchain

Bitflow is the open-source trading market and liquidity engine for Bitcoin on Stacks, where holders trade BTC, STX and stablecoins onchain and provide liquidity to earn trading fees. As the leading decentralized exchange (DEX) on Stacks, Bitflow is building the trading side of Bitcoin capital markets, with every trade executed in seconds on Stacks and settled to Bitcoin.

Bitflow carried 97.8% of the $157M in DEX volume on Stacks in Q3 2026. Over the 90 days to November 10, 2026, trading on Bitflow generated $253K in fees. Bitcoin is the world’s leading digital asset, yet it lacks native capital markets, the yield, credit and trading markets that make other assets productive. Bitflow is building the trading market Bitcoin has been missing.

Why Bitcoin Needs an Onchain Trading Market

Nearly all Bitcoin trading still happens offchain, on centralized exchanges. Onchain BTC trading has stayed small because the infrastructure behind it lagged the tooling available on other chains, one of the gaps covered in What Are Bitcoin Capital Markets?

Open smart contracts alone do not create an open market. Market makers need data and tools, developers need infrastructure, and traders need good execution, yet most of that machinery still sits behind closed doors, so every new team starts from zero. Bitflow is opening its own market-making tools so that liquidity can move onchain, with onchain markets growing alongside exchanges and ETFs rather than replacing them.

An onchain trading market means BTC can be traded and used to provide liquidity without handing it to a centralized exchange. BTC trades on Stacks as sBTC, which is secured by a decentralized signer set requiring 70% consensus.

How the Bitflow DEX on Stacks Works

Bitflow combines four products that cover the full trading loop on Stacks, from the liquidity behind each pair to the way traders and market makers execute against it. BTC enters through sBTC, the decentralized Bitcoin-backed asset on Stacks, and trades against STX and stablecoins such as USDCx.

HODLMM (High-throughput Orderbook-style Decentralized Liquidity Market Maker) is Bitflow’s concentrated liquidity engine. Liquidity providers place capital in narrow price bins around the current price instead of spreading it across every possible price. According to the HODLMM product overview, Bitflow reports this makes HODLMM up to 800x more capital-efficient than a traditional automated market maker. Trades inside an active bin execute with no price impact, which gives BTC/USD pairs order-book-style depth onchain.

The Bitflow swap aggregator routes each trade across Bitflow pools and HODLMM to find the best available price, so traders get one quote instead of comparing pools by hand. Bitflow Keepers automate execution on top of that, running limit orders and recurring buys onchain once the conditions a trader sets are met.

The market-making (MM) kit covers the data and tooling professional and independent market makers need to quote liquidity on Stacks. Bitflow is releasing it as open source to bring more makers, and more BTC liquidity, onchain.

What’s Next for Bitflow

Bitflow’s next phase centers on turning its own trading infrastructure into open tooling, so that any market maker or app on Stacks can tap into BTC liquidity with the tooling already built. Bitflow sets out the release order in its open letter, Is the future of Bitcoin capital markets closed-source?

Its smart contracts are already visible onchain and the market maker starter kit is public on GitHub. The app and backend, the keeper automation system and Bitflow’s custom node are the next releases, running into 2027, each with technical documentation.

In 2027, self-custodial Bitcoin borrowing will bring more BTC and stablecoins onto Stacks, and a deep onchain trading market is where that capital gets priced and moved.

Start Trading on Bitflow

Through December 10, 2026, liquidity providers on Bitflow’s sBTC/USDCx and STX/USDCx pairs also earn a share of 1 BTC per month from Stack Sats, the DeFi rewards program on Stacks

To swap, provide liquidity or explore the MM kit, visit Bitflow and the Bitflow docs.

Stacks is where Bitcoin earns.