Marathon Digital Holdings (MARA) has announced that it will match up to $500,000 in donations to non-profit Bitcoin research and development firm Brink on a two-for-one basis during the Bitcoin 2023 conference in Miami Beach, Florida, and will then match additional donations on a one-for-one basis up to Dec. 31. The payments will be used to fund grants and programmes that pay Bitcoin Core engineers to produce and maintain code for the world’s dominant blockchain – an open source decentralised project that is entirely reliant on such voluntary contributions.