# Technology World of Cryptoids will primarily be run on **Binance Smart Chain** (BEP20) which allows for seamless and extremely fast smart contract integrations. This will allow users to interact with our website marketplace and other features within World of Cryptoids. In order to interact with contracts throughout our ecosystem users will need to have $BNB (Binance Coin) in order to authorize payments. These are typically one time fees and will be tied to the users' wallet. **Metamask** is the **recommended** wallet although users can use other types of wallets such as TrustWallet or Binance Smart Wallet. --- # 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://cryptoids.gitbook.io/whitepaper/additional-info/technology.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.