Bitcoin Layer 2 Stacks deploys SIP-034, increasing DeFi capacity 30 times

Stacks Labs, the developer of Layer 2 solutions for Bitcoin, announced that the SIP-034 upgrade has been officially deployed, increasing network processing efficiency for certain DeFi applications by up to 30 times by removing a key bottleneck.

This upgrade was approved through governance mechanisms in November of last year and is now live on the mainnet. According to Alex Huth, Head of Product at Stacks Labs, developers can now directly leverage these improvements in real-world applications.

SIP-034 changes how Stacks handles transaction limits. Previously, when one of the resource limits was reached during block creation, the entire system would reset all limits, causing processing to halt even if resources remained unused.

After the upgrade, the network only resets the specific limit that has been exhausted, rather than all limits. This allows for better utilization of remaining capacity and enables more transactions to be processed within the same block.

Huth explained that each transaction is evaluated based on multiple “resource budgets,” similar to processing time or read/write operations on smart contracts. Previously, a single “lane” blockage would halt the entire “highway.” Now, the system can continue processing if there is still available capacity, rather than stopping completely.

The efficiency improvements are uneven across applications. The most significant benefits are observed in complex DeFi use cases or those requiring extensive data reads, such as centralized liquidity models or advanced AMM designs—areas previously limited by the old mechanism.

Regarding the impact on the STX token, Huth stated that this upgrade does not directly alter tokenomics but could promote network activity in the long term. As the ecosystem strengthens, it may attract more users, transactions, fees, and accumulated value around the network.

Currently, STX ranks around 102 in the crypto market with a market cap of over $480 million, trading near $0.26, up about 1% in the past 24 hours.

Stacks is a Layer 2 network on Bitcoin, co-founded by Muneeb Ali, enabling smart contract deployment and expanding Bitcoin’s capabilities. This ecosystem supports building decentralized applications and offers native Bitcoin yield products like sBTC and proof-of-transfer consensus mechanisms, allowing STX holders to earn rewards in Bitcoin.