Medical science is on the cusp of a revolution in new and better treatments as medical AIs, machine learning, and other data-powered tools go online. These tools have incredible potential to save lives by contributing to finding cures for diseases, earlier and more accurate diagnoses, identifying new drugs and treatments, and much more. However, researchers face challenges in accessing ethical and high-quality medical data. Up until now, medical data has been locked away and fragmented in healthcare facilities, with no easy or legal way for data sharing. Moreover, the lack of representation in available medical data sets introduces bias into the results of algorithms and programs using them. Data Lake, a start-up founded in 2019 by medical doctors Wojciech Sierocki and Ligia Kornowska, aims to address these problems. They are creating a global medical data donation system based on blockchain technology, with privacy and informed consent as fundamental pillars. Their system allows people to give or revoke consent to the usage of their medical data in a safe, easy, and private way. By providing large datasets, Data Lake aims to revolutionize scientific research and medical studies. Their solution is compliant with European legislation such as the GDPR, Data Governance Act (DGA), and the upcoming European Health Data Space (EHDS). The system uses blockchain technology to record and verify donor consent, ensuring data is only used with express permission. It runs on the Polygon chain, an ETH L2 chain with low fees, fast transactions, and optimal scalability. Data Lake's medical data ecosystem is powered by $LAKE, an ERC20 token on the Ethereum chain, serving as an entry-ticket to participation backed by real-world data transfers. The goal is to set a standard for international data donation, democratize access to medical data, and emphasize the importance of privacy and donor consent in such systems.