Opside is a decentralized ZK-Rollup-as-a-Service (ZK-RaaS) network built on a modular blockchain concept. By developing a complex three-tier blockchain architecture, Opside combines the advantages of Proof-of-Stake (PoS) and Proof-of-Work (PoW) consensus mechanisms. This innovative design provides Web3 developers with a powerful, feature-rich zkEVM chain that can be effortlessly generated with a single click. In the field of scalability, the concept of Layer 2 (L2) is widely recognized. However, L2 suffers from its inability to efficiently integrate disparate hardware resources, including data availability, zero-knowledge proof (ZKP) computing power, and peer-to-peer (P2P) nodes. This gave rise to the concept of modular blockchains. Opside’s innovative three-tier architecture builds on the L2 foundation by seamlessly integrating various modules and providing an external zero-knowledge proof, the Rollup-as-a-Service (ZK-RaaS) platform.