Unlike some payment platforms, Bitcoin actually has a standardized, well-supported QR format — the bitcoin: URI (BIP21) works across nearly every wallet app. Here's exactly how to build one, with or without a fixed amount.
The bitcoin: URI format
A Bitcoin QR code encodes a URI in the format bitcoin:[your address], optionally extended with parameters:
- ?amount=0.001 — pre-fills a specific amount in BTC.
- &label=Coffee%20Shop — a label identifying the recipient, shown in some wallets.
- &message=Thanks! — an optional note attached to the request.
A full example: bitcoin:bc1qxy2kgdygjrsqtzq2n0yrf2493p83kkfjhx0wlh?amount=0.001&label=Coffee%20Shop. Most wallets read this standard directly with no extra setup required on the sender's side.
How to make one
- Get your Bitcoin receiving address from your wallet.
- Build the URI — just bitcoin:address for an open amount, or add ?amount= for a fixed one.
- Encode it with Capy QR's text QR code generator — the bitcoin: URI works the same as any other text payload.
Fixed vs. open amount
- Fixed amount: invoices, a specific price at a market stall — reduces the chance of a sender entering the wrong amount.
- Open amount: donations or tips, where the sender decides how much.
Build yours in the editor → capyqr.com
A note on privacy
A single static address reused indefinitely (like on a printed sign) is simple but ties all payments to one visible address on the blockchain. For higher privacy, some people generate a fresh address per transaction and make a new QR code each time — worth weighing against the convenience of a permanent, printed code depending on your use case.
A code ready for a wallet address
Here's a Capy QR styled for a receipt, invoice, or counter display:
Frequently asked questions
- How do I make a Bitcoin QR code?
- Encode a bitcoin: URI — bitcoin:[your address] or bitcoin:[address]?amount=0.001 for a fixed amount — into a QR code. Nearly every Bitcoin wallet app can scan this format directly and pre-fill the payment.
- What is the bitcoin: URI format?
- It's a standardized format (BIP21) that most wallets support: bitcoin:ADDRESS optionally followed by ?amount=X&label=Y&message=Z. This lets a QR code pre-fill the recipient address, amount, and even a note in one scan.
- Can I set a fixed amount in a Bitcoin QR code?
- Yes — add ?amount=0.001 (or whatever amount, in BTC) to the bitcoin: URI before encoding it. The receiving wallet will pre-fill that amount, though the sender can usually still edit it before confirming.
- Is it safe to display a Bitcoin QR code publicly, like at a market stall?
- A receiving address QR code only lets people send you Bitcoin — it can't be used to withdraw funds. For privacy, some people prefer generating a new address per transaction rather than reusing one static code indefinitely, though a single address is simpler for a fixed display.
- Do all wallets support the bitcoin: URI scheme?
- The vast majority of Bitcoin wallets support scanning bitcoin: URIs — it's a long-established, widely adopted standard (BIP21), not something specific to one wallet or provider.
Bottom line: Bitcoin's bitcoin: URI is one of the few payment formats that genuinely works as a universal QR standard — no platform-specific caveats needed. Ready to make one? Open the text QR code generator or browse more QR guides.
