Bluzelle is a decentralized database project that utilizes blockchain technology. It has its own native token, BLZ, which exists in two forms: as an ERC-20 token for external trading on Ethereum-compatible exchanges, and as a native token within the Bluzelle network for fast, cost-effective database transactions. Therefore, while Bluzelle is not exclusively an ERC-20 token, it does have an ERC-20 component.