Signature Chain is the powerhouse behind SIGN Art. The art gallery empower you to tokenize and sell your Digital Art as NFT on Waves Blockchain. https://www.sign-art.app https://twitter.com/signArtApp Signature Chain is as well behind SIGN Web App, the decentralized tool allowing a document certification utilizing Blockchain Technology. It allows users to certify and verify documents via a digital signature created by a cryptographic hash function. https://www.sign-web.app