Is Qtum an open source project?

Yes, Qtum is an open source project. ‌

Qtum is a token issued on the Quantum Blockchain, an open source blockchain project. Qtum combines the core technology of Bitcoin with the smart contract function of Ethereum, aiming to connect the real business world with the blockchain world and build a smart contract platform through a series of partners. This project includes the core of Bitcoin and the Ethereum virtual machine, and uses smart contracts and DAPPs in a proof-of-stake manner. The "account abstraction layer" that connects EVM and Bitcoin core plays a bridge role between the two. Qtum's vision is to integrate the Bitcoin and Ethereum ecosystems and enrich the community ecosystem through application development in various industries. Therefore, from the definition and function point of view, Qtum is indeed an open source project dedicated to developing a new blockchain ecosystem and broadening the application and technical boundaries of blockchain technology‌.