> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bitrace.io/llms.txt
> Use this file to discover all available pages before exploring further.
# Quick Start
## Account Application
A Bitrace account requires an application for full registration. The first-time application comes with a free trial period.
Fill in your information, and the Bitrace team will contact you.
Bitrace also provides an open registration free query tool, limited to 10 queries per day. Registration can be completed quickly with an email.
[https://blacklist.bitrace.io/](https://blacklist.bitrace.io/)
## Login
Users can log in and access authorized applications through the unified portal [https://portal.bitrace.io](https://portal.bitrace.io).
After logging in, you can view your remaining quota, expiration date, and authorized applications.
## Change Password
To change your password, visit [https://portal.bitrace.io/user-profile](https://portal.bitrace.io/user-profile).
## Search History
Aggregates records of account search history and expenses across applications.
## Quick Access
From the top navigation of each application, you can quickly access other applications and check your account balance status.
