Bitcoin Core developer reignites sidechain debate in latest proposal

Drivechains focus on employing sidechain technology to augment Bitcoin by adding new features and functionalities


Mabeline72/Shutterstock, modified by Blockworks


After a long hiatus, Bitcoin Core developer Luke Dashjr has submitted a rough draft for implementing drivechains, a complex but promising addition to the Bitcoin ecosystem.

Drivechains allow the creation of sidechains, which are linked to the main Bitcoin network but remain separate and can operate independently, with different rules and functionalities.

Luke Dashjr
Source: LinkedIn

The innovation could boost the adaptability of Bitcoin by providing room for experimentation without compromising the security and stability of the primary network, or so the thinking goes.

The draft proposal, consisting of 17 commits, focuses on reimplementing drivechains using a UTXO-like model, according to a post in the Bitcoin Core repository on GitHub on Tuesday. 

Essentially, the main goal of the change is to create a new version of drivechains, with a design that’s modeled after the way Bitcoin tracks transactions and ownership.

The concept was first publicly introduced in 2014 in a paper titled “Enabling Blockchain Innovations with Pegged Sidechains,” published by Adam Back, Matt Corallo, Dashjr and others.

The method would utilize existing database structures rather than creating a separate database for sidechains, aiming for a cleaner and more reviewable approach, Dashjr said.

However, the proposal has not been without criticism. Other contributors have already raised concerns, with one reviewer — “Russeree” — expressing doubts about the proposed consensus method, fearing potential errors or manipulation by miners. 

The pull request also indicates some incomplete areas, and Dashjr acknowledges the proposal cannot be deployed in its current form. This leaves room for further development, refinement, and possibly a shift in approach based on community feedback, he said.

“Despite providing and continuing this implementation, I myself do not thereby endorse or otherwise comment on the proposal itself,” Dashjr said.

Eric Wall, a prominent venture capitalist, focusing on investments in crypto and blockchain-related projects, called it the “most interesting development in Bitcoin,” this year.

Dashjr’s draft is still in the early stages, with the developer inviting feedback from the community.

Dashjr does not possess commit access to the Bitcoin repository, meaning others who do will have to sign off on the changes, following Bitcoin Core’s development consensus process. But he stands as the contributor with the longest tenure, having more than 500 of his commits merged, Wall added.

Don’t miss the next big story – join our free daily newsletter.


Upcoming Events

MON - WED, MARCH 18 - 20, 2024

Digital Asset Summit (DAS) is returning March 2024. What you can expect: And more! Don’t miss out on the opportunity to be in the room when the future of crypto is decided. Join us and help shape the future of our […]

recent research

Research report - cover graphics-2.jpg


Base has doubled-down on its commitment to the Superchain vision, has shown early signs of success with nearly $400M in TVL, and has become home to novel dapps such as which has seen significant traction.


Certain creditors could be repaid sooner, with one hedge fund exec telling Blockworks it expects a payout by the end of the year


Busan is South Korea’s second largest city with a population around 3.4 million


Cyprus granted eToro crypto registration, setting the groundwork for the company to operate crypto services post-MiCa rollout



These are the best tools and practices you can leverage to defend against crypto market volatility


The agency alleges around 1,160 customers used the margin product, losing about $8.35 million since Oct. 2021.


On Thursday, the Securities and Futures Commission issued a statement disavowing any communication with JPEX saying that the platform is unlicensed