Typing a cryptocurrency wallet address is a nightmare. Bitcoin addresses contain 26 to 35 alphanumeric characters. Ethereum addresses are 42 characters long starting with "0x." One wrong character and your funds are gone forever. A QR Code for Crypto eliminates this risk entirely. One scan fills the wallet address, amount, and memo automatically. Whether you accept Bitcoin, Ethereum, Solana, or stablecoins, QR codes make crypto payments fast, accurate, and user-friendly.
A Crypto QR Code is a scannable image that encodes a cryptocurrency payment request using blockchain-specific URI standards. When scanned by a compatible wallet app, it automatically fills the recipient wallet address, payment amount, and optional memo fields — eliminating manual entry and the catastrophic risk of address typos.
- **Chain-Specific Standards:** Bitcoin uses BIP-21, Ethereum uses EIP-681, Solana uses Solana Pay format.
- **Address Pre-Fill:** The full wallet address is encoded so users never type a single character.
- **Amount Pre-Fill:** Encode the exact payment amount for one-tap invoice settlement.
- **Network Selection:** Ethereum-based codes include chain IDs — Mainnet (1), Polygon (137), Base (8453), Arbitrum (42161).
The complete workflow from merchant setup to blockchain confirmation:
- **Step 1: Generate the QR Code:** Enter wallet address, select cryptocurrency, set optional amount and memo. The generator outputs the correct URI format.
- **Step 2: Customer Scans with Wallet App:** The customer opens their wallet app (MetaMask, Trust Wallet, Phantom, etc.) and uses the built-in QR scanner.
- **Step 3: Wallet Pre-Fills All Fields:** Address, amount, and memo auto-populate. No typing required.
- **Step 4: Customer Confirms and Sends:** Network fees are displayed. Customer confirms the transaction.
- **Step 5: Transaction Broadcasts:** The transaction hits the blockchain in seconds. Confirmation time depends on network (Bitcoin ~10 min, ETH ~15 sec, Solana ~1 sec).
### BIP-21 for Bitcoin
BIP-21 is the universal Bitcoin payment QR standard, encoding: `bitcoin:ADDRESS?amount=X&label=Name&message=Note`. Supports on-chain Bitcoin transactions and unified QR codes that combine on-chain and Lightning Network invoices in a single scannable code.
### EIP-681 for Ethereum & EVM Chains
EIP-681 handles native ETH and ERC-20 token transfers across all EVM-compatible networks. Format: `ethereum:0xADDRESS?value=WEI`. Specify chain ID to target Mainnet, Polygon, Base, or Arbitrum. For ERC-20 tokens, encode the contract address and transfer function call.
### Solana Pay
Solana Pay encodes recipient address, SOL or SPL token amounts, and memo into a Solana-compatible URI. Used by Phantom, Solflare, and major Solana wallets.
### Lightning Network (BOLT-11)
Lightning QR codes encode BOLT-11 invoices for near-instant, low-fee Bitcoin payments over the Lightning Network layer. Distinct from on-chain Bitcoin QR codes and processed in seconds rather than minutes.
QR Code Pulse supports QR generation for all major chains:
- **Bitcoin (BTC):** BIP-21 standard, on-chain and Lightning.
- **Ethereum (ETH):** EIP-681, native ETH and ERC-20 tokens.
- **Solana (SOL):** Solana Pay format, native SOL and SPL tokens.
- **USDT & USDC:** Available on Ethereum, Polygon, Base, Solana, BSC.
- **Polygon (MATIC/POL):** EIP-681 on chain ID 137.
- **Additional chains:** Bitcoin Cash, Litecoin, Dogecoin, Binance Coin, Cardano, and Tron.
Choose based on your payment workflow:
- **Static Crypto QR Codes:** Free, permanent, works with all wallet apps. Best for stable wallet addresses on business cards and storefront displays. Cannot be edited after creation.
- **Dynamic Crypto QR Codes:** Edit destination address or amount anytime without reprinting. Full scan analytics including total scans, location, and device type. Set expiry times for time-sensitive invoices. Best for freelancers, event payments, and rotating wallet security strategies.
Every touchpoint where you want to accept crypto is an opportunity:
- **POS & Checkout Counters:** Fastest contactless crypto acceptance without hardware terminals.
- **Online Checkout Pages:** Display alongside [Payment QR Code](/qr-code-for-payment) and [PayPal QR Code](/qr-code-for-paypal) options for maximum payment flexibility.
- **PDF Invoices:** Include a QR code with a pre-filled amount in BTC, ETH, or USDT. Clients pay in one scan.
- **Donation Pages & Overlays:** Livestream overlays, website pages, and event signage for instant crypto donations.
- **Exchange Deposit Addresses:** Avoid clipboard hijacking attacks by displaying deposit address QR codes instead of copyable text.
Crypto is irreversible — security is non-negotiable:
- **Never Encode Private Keys:** QR codes must only contain public wallet addresses. Private keys or seed phrases in a QR code mean complete loss of funds.
- **Verify Decoded Address:** Before sending any transaction, always verify the decoded wallet address matches the intended recipient. Scammers physically replace QR codes with their own.
- **Use Branded Codes:** Add your [QR Code with Logo](/qr-code-for-logo) so customers recognize your code as legitimate.
- **Dynamic Codes with Expiry:** For invoices, set expiry times on dynamic QR codes to prevent payment reuse and fraud.
- **Test Before Deployment:** Scan with multiple wallet apps (MetaMask, Trust Wallet, Phantom) to confirm compatibility.
Stop losing transactions to wallet address errors. With QR Code Pulse, generate a professional multi-chain crypto QR code with logo branding, pre-filled amounts, and dynamic tracking in seconds — completely free. Create your crypto QR code now and make every payment instant, accurate, and verifiable.
Select your cryptocurrency (BTC, ETH, SOL, etc.), enter your public wallet address, optionally set a payment amount, add a label or memo, and generate. QR Code Pulse creates the QR code in the correct URI format (BIP-21, EIP-681, or Solana Pay) for your chosen chain.
BIP-21 is the Bitcoin standard for payment QR codes. It encodes the format bitcoin:address?amount=X&label=Name&message=Note. Scanning a BIP-21 QR code automatically populates the address, amount, and memo in any compatible Bitcoin wallet.
EIP-681 is the Ethereum standard for payment QR codes. It supports native ETH transfers and ERC-20 token payments, specifying the contract address, recipient, and amount in wei. It also supports chain ID for directing payments to Mainnet, Polygon, Base, or Arbitrum.
Yes. For Bitcoin, encode the amount using BIP-21 (?amount=0.001). For Ethereum, use EIP-681 (?value=in wei). Pre-filling the amount eliminates manual entry and reduces errors when requesting exact payments.
A crypto QR code can encode the wallet address, payment amount, label (recipient name), message or memo, and network chain ID. For Ethereum-based chains, chain ID directs the wallet to the correct network — Mainnet (1), Polygon (137), Base (8453), or Arbitrum (42161).
On-chain Bitcoin QR codes encode BIP-21 URIs for standard blockchain transactions (10-30 minute confirmations). Lightning QR codes encode BOLT-11 invoices for the Lightning Network layer, providing near-instant settlement in seconds at much lower fees.
Static crypto QR codes do not provide scan analytics. Dynamic QR codes from QR Code Pulse include full scan tracking — total scans, geographic location, device types, and timestamps — while still encoding the correct crypto payment URI.
Static crypto QR codes never expire as long as your wallet address remains valid. Dynamic QR codes can be configured with expiry times — useful for time-limited invoices where you want to prevent payment reuse.
Bitcoin (BIP-21), Ethereum (EIP-681), Solana (Solana Pay), Polygon, Base, Arbitrum, USDT and USDC on multiple chains, Bitcoin Cash, Litecoin, Dogecoin, and Binance Coin all support standardized QR code payment formats.
Yes. QR Code Pulse generates your code entirely in the browser. Your wallet address is never transmitted to our servers. The QR code only encodes your public wallet address — never private keys or seed phrases.
A minimum of 1x1 inch (2.5x2.5 cm) is recommended for reliable scanning. For POS displays and booth signage, use at least 3x3 inches. Print at 300 DPI minimum for physical deployments.
Yes. Add your brand logo or the specific coin logo (Bitcoin B, Ethereum diamond, etc.) to the center of the QR code. Use Level H error correction (30% recovery) to maintain full scannability with the logo overlay.
Only with dynamic QR codes. Dynamic codes allow you to update the destination wallet address, amount, or memo from your dashboard without reprinting — ideal when rotating wallets for security or updating invoice amounts.
Solana Pay is the Solana blockchain standard for payment QR codes. It encodes the recipient address, amount in SOL or SPL tokens, and optional memo. When scanned by a Solana-compatible wallet, the payment form is pre-filled instantly.
Correct — never encode private keys, seed phrases, or recovery phrases in any QR code. These grant full access to your funds. Crypto QR codes should only contain public wallet addresses and payment metadata.