What is the Essence of a Wallet?

A cryptocurrency wallet is not a place where coins are actually stored—coins always remain on the blockchain. What a wallet stores is your private key, which is the sole credential proving you own those coins.

Analogy: A wallet is like a bank card. The coins are in the bank (the blockchain), and the card (private key) proves you have the right to access them.

Hot Wallets vs Cold Wallets

TypeNetwork ConnectionSecurityConvenienceSuitable Scenarios
Hot WalletOnlineMediumHighDaily transactions, small holdings
Cold WalletOfflineExtremely HighLowLong-term holding, large assets

Hot Wallets

Hot wallets are software wallets connected to the internet. Common examples include:

  • MetaMask: The most popular Ethereum wallet, available as a browser extension
  • Trust Wallet: A mobile wallet under Binance, supporting multiple chains
  • Binance Web3 Wallet: Built into the Binance App

Advantages: Free, convenient, always accessible. Disadvantages: Being online means there is a risk of hacker attacks.

Cold Wallets (Hardware Wallets)

Cold wallets are offline hardware devices where the private key never touches the network. Common brands:

  • Ledger (France): The most mainstream hardware wallet
  • Trezor (Czech Republic): An open-source hardware wallet

Advantages: Extremely high security; even if your computer is infected with malware, the private key cannot be stolen. Disadvantages: Requires purchasing a device (approximately 500-1000 RMB), and operation is relatively complex.

Is an Exchange Account Considered a Wallet?

A Binance account is a custodial wallet—Binance keeps your private key for you. The advantage is convenience; the disadvantage is that you do not directly control the private key and must trust Binance's security.

💡 Advice for Beginners: When you are just starting out, it is fine to keep your coins on Binance. When your holdings become larger (for example, worth over 10,000 RMB), consider transferring them to your own wallet.
⚠️ "Not your keys, not your coins"—If it is not your private key, it is not your coin. This is a core principle in the cryptocurrency space. Exchanges carry the risk of collapse; for large assets, self-custody is recommended.

How Should Beginners Choose?

  • Just starting out, small funds → Keep them on Binance
  • Want to experience DeFi/NFT → Install the MetaMask hot wallet
  • Long-term holding of large assets → Purchase a hardware cold wallet like Ledger