ChainForge ToolsAddress QR Code
What Is an Address QR Code?
An address QR code encodes public receiving information into a QR code that a mobile wallet can scan, reducing errors when copying addresses manually.
What Does a QR Code Usually Contain?
The simplest receiving QR code contains only an address, such as a Bitcoin, Ethereum, or TRON address. More detailed QR codes may contain a URI with parameters such as an amount, a note, or a chain type.
For example, an Ethereum receiving QR code may contain only an address beginning with 0x... , or it may contain a URI such as ethereum:0x... . Wallet support for URIs varies, so including only the public address remains the most widely compatible approach.
What Should You Check After Scanning?
- Check that the wallet has identified the correct chain. Do not send TRON USDT to an Ethereum address or BTC to an EVM address.
- Verify the entire address, not just its first and last characters. QR codes can reduce input errors, but they cannot prove that the address comes from a trusted source.
- Before a large transfer, send a small test amount. Once receipt is confirmed, transfer the remainder.
- Do not scan QR codes on unfamiliar websites asking you to 'restore your wallet' or 'verify your seed phrase'.
How to Interpret QR Code Contents
Use a trusted wallet or offline scanner to inspect the raw text first, without automatically opening unfamiliar links. A plain address contains only receiving information; bitcoin:address?amount=0.001 is a payment request with the amount denominated in BTC. An ethereum: URI may contain a chain ID, an amount, or contract call parameters and should not automatically be treated as an ordinary receiving address.
If you encounter an https link, a WalletConnect request, or signing instructions, understand the action before proceeding. A QR code itself does not validate the chain, recipient, or transaction safety. This page explains how to interpret QR codes; it does not access your camera or upload images.
Can a QR Code Leak Your Private Key?
An ordinary receiving-address QR code contains only a public address, not a private key or seed phrase. However, a QR code containing a private key, seed phrase, signing request, or malicious DApp link may pose a risk if someone asks you to scan it.