How to buy Bitcoin in mainland China? What is BTC? How to own your own BTC (Complete Guide for Beginners 2025)

What is BTC? Analysis of the Core Value of Bitcoin

Bitcoin (BTC) is the world's first decentralized digital currency, created by Satoshi Nakamoto in 2009. Its core characteristics include:

Decentralization: Operates on a blockchain network composed of tens of thousands of nodes, with no bank or government control.

Fixed Supply: A maximum limit of 21 million coins, its anti-inflation property is praised as "digital gold."

Transparency and Traceability: All transaction records are publicly accessible (via blockchain explorers like OKLink).

Immutability: Based on the SHA-256 encryption algorithm, transactions cannot be reversed once confirmed.

As of 2025, Bitcoin's market value exceeds $1.5 trillion, accounting for 45% of the total cryptocurrency market value, becoming an important asset for institutional investors.
Full Process for Users in Mainland China to Purchase Bitcoin (Compliance and Security Version)

Step 1: Register and Download the OKX App

Visit the official website: Enter https://ouyijoin.com (real-time synchronization with global nodes), using Chrome/Safari browser.

Register an account:

Copy the registration link to open in the browser, register through the link provided by the official site, download the OKX APP as instructed, and complete the registration. After successful registration, you will enjoy the high-quality trading services and rich user benefits provided by OKX.

Step 2: Exchange RMB for USDT

Fiat Currency Purchase:

Log in to the App → Go to the "Quick Buy" page → Choose Alipay/Bank Card payment.

Exchange USDT funds automatically deposited into your account at real-time exchange rates.

Notes:

Prioritize choosing "Quality Merchants" and compare multiple quotes to reduce price differences.

Step 3: Purchase Bitcoin (BTC)

Spot Trading:

Select the BTC/USDT trading pair → Enter the purchase amount → Use "Limit Order" to set your ideal price.

After the transaction, you can view your holdings in the "Funds Account," supporting trading 24/7.

Withdraw to Personal Wallet:

Recommended hardware wallets (like Ledger/Trezor) to generate a BTC receiving address.

Enter the address in the OKX App, pay the miner fee (about $1-5) to complete the transfer.

Comparison of Bitcoin Security Storage Solutions

Storage Method	Security	Convenience	Applicable Scenarios
Exchange Account	★★★☆	★★★★★	Short-term trading, frequent operations
Hardware Wallet	★★★★★	★★★☆	Long-term holding, large assets
Paper Wallet	★★★★☆	★★☆	Extreme security needs, offline backup

Basic Concepts of Blockchain Technology (Must-Read for Beginners)
1. Decentralized Network
The Bitcoin network is maintained by global nodes, each storing a complete copy of the ledger, achieving consensus through a Proof of Work (PoW) mechanism to ensure data immutability.
1. Mining and Block Rewards
Miners verify transactions by calculating hash values, successfully packaging a block can earn a reward of 6.25 BTC (2025 data).

The reward is halved every 210,000 blocks (approximately every 4 years), with the next halving expected in 2028.
1. Wallet Address and Private Key
Address: Similar to a bank account number (e.g., 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa).

Private Key: Generated from 12/24 mnemonic words; losing it means permanently losing control of the assets.
Frequently Asked Questions (2025 Edition)

Q1: Is it legal to purchase Bitcoin in China?

→ The operation of cryptocurrency exchanges is prohibited within China, but holding BTC through international compliant platforms like OKX is a personal action, and legal risks must be borne by the individual.

Q2: How to verify the authenticity of Bitcoin?

→ Check the transaction hash (TXID) through a blockchain explorer to confirm that the block confirmation count matches the transfer address.

Q3: Why is there a fee for Bitcoin transfers?

→ Miners prioritize packaging transactions with higher fees; the higher the fee, the faster the transaction is processed (average 10-30 minutes).
Core Advantages of the OKX Platform

Compliance Qualifications: Holds financial licenses from 10 countries including Malta and Dubai, and has passed ISO 27001 information security management certification.

Security System:

Cold wallets store 98% of user assets.

Supports biometric (fingerprint/facial) login.

Real-time anti-phishing system intercepts malicious attacks.

Trading Depth:

The BTC/USDT trading pair has a 24-hour trading volume exceeding $5 billion.

Conclusion

Complete OKX App registration and download through https://ouyijoin.com to start compliant Bitcoin investment. Please remember:

The private key is the asset; be sure to back up the mnemonic offline.

Start with small amounts to gain experience and avoid high-leverage speculation.

Stay updated on industry policies and technological developments (such as Taproot upgrades, Lightning Network).

Take Action Now: Click to Enter the OKX Official Website

Disclaimer: This article only provides technical guidance; the risks of cryptocurrency trading are borne by the individual; please invest rationally.