Constellation, also known as DAG, is a protocol that utilizes a directed acyclic graph architecture to achieve consensus. This unique approach aims to provide scalability. Launched in 2017, Constellation strives to address common challenges in existing blockchains, such as scalability and centralization. It is designed to process big data securely and connect to external datasets through user-friendly APIs. The protocol's technology is facilitated by a shift in consensus building through a serverless architecture. Constellation's native token, DAG, is an integral part of the network's ecosystem.

Constellation operates using a unique consensus model known as proof-of-meme (PoM), which rewards and selects nodes with good reputations. The protocol's smart contracts run on a Java Virtual Machine (JVM), serving a similar function to smart contracts on other blockchains but with the ability to handle complex logic. The network's architecture comprises several components, including Stars, Star Cluster, Galaxies, and Black Holes, each playing a specific role in the network's operation. As more users join Constellation, the network bandwidth increases proportionally, demonstrating the protocol's scalability.

Constellation aims to process big data with scalability, easy integration, low transaction fees, and security. It seeks to efficiently process large datasets in a secure and cost-effective manner. The protocol's unique architecture allows it to scale in proportion to the number of users and current needs. Additionally, Constellation's smart contracts, which run on a Java Virtual Machine (JVM), aim to handle complex logic. This makes Constellation potentially useful in various sectors that require secure and efficient processing of large amounts of data.

Constellation was launched in 2017 by co-founders Benjamin Jorgensen, Benjamin Diggles, Mathias Goldmann, and Wyatt Meldman-Floch. The team sought to rethink traditional solutions to common blockchain problems, such as scalability and centralization. In June 2018, the creators launched Orion, a platform that allows the community to receive DAG tokens by participating in various Constellation events. The protocol's native token, DAG, was introduced as an ERC-20 token. In relation to its security features, Constellation signed a deal with the U.S. Air Force in 2019 to automate its big data management.