A project aimed at expanding Bitcoin’s tool is to tackle the security requirements to bridge the bridge between blockchain for programmable layers 2s.

Rollup Project Citrea implemented its Clementine Bridge on the Bitcoin test network. The bridge uses BitVM2 programming language to extend the provision for decentralized financing (DEFI) on Bitcoin by using it to verify LAG 2S and sidekains that are fully programmable in the way Bitcoin is not.

“A safe bridge between Bitcoin and a secondary layer has always been a bottleneck to use BTC in a programmable environment,” Citrea said Monday.

Clementine is designed to solve this by providing a trust minimized way of bridging Bitcoin (BTC) for use in defi-environments.

The BitVM family of computing paradigms that could allow Smart contracts in Ethereum style on Bitcoin, often lies in the heart of trials from developers to make the network more programmable and thus allow BTC to run defi activities.

However, BitVM is hampered by the requirement to deposit BTC as a security mechanism each time a calculation starts.

“We recycle the operator’s safety, giving them the opportunity to facilitate more PEG outs with a single security,” Citrea tools Ekrem Bal told Coindesk in a telegram distribution.

PEG-Outs refers to the process of moving assets from a sidekiness back to Bitcoin that triggers the release of the locked BTC security on the head chain.

Citrea inmates Clementine at the original BitVM design last September. Citrea’s latest bridge uses BitVM2, an upgrade that boasts improvements, such as allowing any participant to challenge suspicious transactions, not just a fixed set of operators.