# Contract inspection When users trade in the secondary market, they often encounter blacklist, can only buy but not sell, high burning currency and other difficult to prevent, but they do not know how to read the contract code and worry, ITBNAK provides users with free contract detection service, ITBNAK not only obtains a large number of users, but also brings great convenience to users. Contract detection: users can understand the currency contract information of Ethereum, Binance Smart Chain, Tron, Polygon, Avalanche, Solana, Near and other chains through contract detection; Currency information can be learned from contract information. token name, token contract address, contract creation address, total amount, circulation, number of currencies holding addresses (whether there is a lock or destruction), number of LP currency holding addresses (whether there is a lock). Risk prompt: whether to abandon the administrator's authority, whether it can be additionally issued and maliciously smashed, Whether it can only be bought but not sold，whether the contract is open source, whether there is a whitelist, whether there is a blacklist, and whether there is a risk of trading suspension. Transaction attribute: buying fee, selling fee, 24h transaction address, 24h transaction volume. Community trust voting (users with platform currency address can vote once for a project). When the negative vote is greater than 60%, there is a risk prompt. Users with platform currency addresses can enjoy free testing services. --- # 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://itbank-1.gitbook.io/itbank/introduction/existing-itbank-functions/contract-inspection.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.