Stacks Upgrade Expands Capacity for Bitcoin DeFi by Up to 30x
Jersey City, NJ, March 17th, 2026, Chainwire
A concentrated liquidity AMM coming to Bitcoin with capacity for institutional Bitcoin capital.
Stacks, the L2 where Bitcoin earns bitcoin, has implemented a major protocol upgrade that increases effective network capacity for Bitcoin DeFi applications by up to 30x. A direct result of the recently implemented SIP-034, which introduced dimension-specific tenure extensions, removing bottlenecks by allowing the network to allocate resources, while enhancing Stacks’ ability to support native Bitcoin yield activities without compromising settlement on Bitcoin.
As institutional demand for Bitcoin-native yield strategies increases, scalable and predictable network performance becomes critical. The SIP-034 upgrade strengthens Stacks’ production-grade infrastructure, enabling higher throughput for complex financial applications while preserving Bitcoin settlement and self-custody principles.
The Stacks network meticulously measures every smart contract transaction across five critical dimensions: Run Time (CPU cycles), Read Count, Read Length, Write Count, and Write Length. Each block has strict, hard limits (“budgets”) across all five dimensions to ensure existing hardware can process transactions and the network remains securely tethered to Bitcoin’s pace.
The new SIP-034 introduces a crucial refinement to the block budgeting mechanism, and unlocks hidden capacity. Previously, a partial block budget reset (“tenure extend”) was resetting all five dimensions halfway through a Bitcoin block. Now, miners can request a reset of just one exhausted dimension.
“This upgrade unlocks additional capacity previously hidden by reasonable security concerns,” said Alex Huth, Product Lead at Stacks Labs. “Dimension-specific tenure extends let sophisticated DeFi apps push the limits on one of the budgets without prematurely stopping the block, allowing for a much smarter way of filling each block to maximize throughput of the chain.”
The improvement has immediate implications for concentrated liquidity, lending markets, and other capital-intensive primitives that underpin Bitcoin DeFi. Early ecosystem integrations, including Bitflow’s concentrated liquidity AMM and new HODLMM, estimate up to 30x effective throughput gains under real-world conditions.
By refining how block budgets are managed, Stacks increases the headroom available for Bitcoin DeFi innovation without introducing new trust assumptions or compromising Bitcoin’s security model. As institutional participation in productive Bitcoin expands, scalable and resilient infrastructure will define the next phase of Bitcoin’s growth. More information about the innovations available at stacks.co
About Stacks
Stacks is the Bitcoin-secured smart contract layer where Bitcoin grows. It extends Bitcoin’s functionality without compromising settlement on Bitcoin L1, enabling Bitcoin staking and Bitcoin-native yield through its Proof-of-Transfer (PoX) consensus. The network has distributed over $500 million worth of BTC in rewards since launch. With upgrades including Nakamoto and the launch of sBTC, Stacks provides institution-ready infrastructure for scalable Bitcoin DeFi. More information available at stacks.co.