1. Install Math Wallet
2. Create/Import BTC&PCX wallet
1)Create a BTC wallet for the BTC lock-up. Do not make any transaction with the BTC wallet except the lock-up transaction, otherwise, the BTC lock-up will fail.
2)Create/Import a PCX wallet to be linked for BTC lock-up
1)Open the DApp ‘L-BTC Lock-up Mining’
- For iOS user, click “Browser” in button navigation bar and paste the link:
mathdapp.store - For Android user, click “DApp” in button navigation bar and find the DApp ‘L-BTC Lock-up Mining’
2)Lock-up BTC
Select the BTC wallet, link it to ChainX wallet, put referral node(optional), enter lock-up amount (at least 0.01 BTC), click “Lock” and complete payment. The successful transaction means the BTC lock-up is completed.
![](http://medishares-cn.oss-cn-hangzhou.aliyuncs.com/Blog_EN/en/en/enn/532ee473bf610f93dc2ceede1ffe369.jpg)
4. Check the Lock-up BTC
Switch to the linked PCX wallet, open the DApp “ChainX Asset Management” to view the amount of locked BTC and mined PCX.
![](http://medishares-cn.oss-cn-hangzhou.aliyuncs.com/Blog_EN/en/en/enn/40fdaa57357a583bee997e8d377229e.jpg)
Video Tutorial
Any questions, join: https://t.me/mathwallet