# Blockchain Crystal Quest will launch on EVM. We will announce which chain we have selected in the future. Tiny Dragon NFTs conform to the ERC721 standard, and both EDC and QWF conform to the ERC20 standard. These smart contracts will be made open source before the public launch. EVM (Ethereum Virtual Machine) development is currently the gold standard for smart contracts. We evaluated EVM blockchains that solve the transaction cost and time problems associated with Ethereum. By building with EVM, we also leave the option of migrating to a new blockchain with little development complexity. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://ryu-games.gitbook.io/crystal-quest-white-paper/technology/blockchain.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.