Qtum（QTUM）是总部位于新加坡的开发人员团队于2017年推出的开源区块链平台。该项目为维护虚拟机与区块链之间的连接提供了机会。此外，Qtum用户可以在平台的帮助下创建智能合约并构建DApp。重要的是要提到Qtum与基于其他区块链构建的DApp兼容。
Metronome aims to optimize for self-governance, reliability, and portability. Founded by a number of veterans in the space (e.g. Jeff Garzik, Matthew Roszak), Metronome is founded on three key design principles:
Self-governance with no undue influence from founders after initial launch and public access — contract governance starts at launch.
Reliability and predictability where issuance and supply are immutable
Portability to enable maximum decentralization, even across different blockchains. The first 'chainhop' took place in summer 2019, between Ethereum and Ethereum Classic