Check phí BTC is a Chrome extension developed by Nhatanhcrypto. It is a tool designed to help users view the real-time price and transaction fees of the Bitcoin network. With the current strong growth trend of BRC-20, this extension can assist users in making informed decisions about whether to trade Bitcoin or not.

The main features of Check phí BTC include:

1. Real-time display of Bitcoin price and transaction fees on the network.

2. Different colors to differentiate between fee levels.

3. Display of fees in Sat/vB with different speed levels.

4. Marketcap display from Unisat Market.

This extension aims to help users choose BRC-20 tokens and trade with the lowest possible fees.