How to pay a Mintare invoice

Before you start

1. Get a Solana wallet

   Install Solflare or Phantom from your phone's app store (look for the publisher's official listing). Any wallet that supports Solana Pay works too. Write down the recovery phrase when you set it up and keep it private: Mintare and your freelancer will never ask for it.

2. Add USDC on Solana

   You need at least the invoice total in USDC. You can buy it in the wallet app, or buy it on an exchange (for example Kraken or Coinbase) and withdraw it to your wallet's address.

   When you withdraw, pick Solana as the network. USDC exists on several networks and sending it on another one (Ethereum, Base, Polygon…) means it won't arrive in your Solana wallet. Exchanges usually take their withdrawal fee from the amount, so withdraw a little extra.

3. Keep a little SOL for fees

   Every Solana payment costs a tiny network fee, paid in SOL (well under a cent). Keep about 0.01 SOL in the wallet, alongside the USDC. Without any SOL the wallet can't send the payment.

Paying with Solflare on your phone

Open the invoice link your freelancer sent you, then use whichever is easier:

1. If the invoice is on a computer screen: scan it

   Open Solflare on your phone. On the home screen, tap the scan icon (the small square at the top) to open the QR scanner. Point it at the QR code on the invoice page.

2. If the invoice is on your phone: tap Open in wallet

   Tap Open in wallet under the QR code. Your phone opens Solflare with the payment filled in. If your phone asks which app to use, choose Solflare. If nothing happens, open the invoice link on a computer and scan the QR code instead.

3. Check the details, then approve

   Before you approve, make sure:

   • the amount matches the invoice total, in USDC;
   • the recipient is your freelancer's name or business, and the address matches the one on the invoice page;
   • the message says the right invoice number.

   Tap Approve (some versions say Confirm). Payments on Solana are final and can't be reversed, so if anything looks wrong, cancel and contact your freelancer.

Paying with Phantom on your phone

Open the invoice link your freelancer sent you, then use whichever is easier:

1. If the invoice is on a computer screen: scan it

   Open Phantom on your phone. On the home screen, tap the scan icon in the top corner to open the QR scanner. Point it at the QR code on the invoice page.

2. If the invoice is on your phone: tap Open in wallet

   Tap Open in wallet under the QR code. Your phone opens Phantom with the payment filled in. If your phone asks which app to use, choose Phantom. If nothing happens, open the invoice link on a computer and scan the QR code instead.

3. Check the details, then approve

   Before you approve, make sure:

   • the amount matches the invoice total, in USDC;
   • the recipient is your freelancer's name or business, and the address matches the one on the invoice page;
   • the message says the right invoice number.

   Tap Approve (some versions say Confirm or Send). Payments on Solana are final and can't be reversed, so if anything looks wrong, cancel and contact your freelancer.

On a computer (browser extension)

1. Use your phone to scan

   The Solflare and Phantom browser extensions can't open a payment request from a web page. The simplest way is to leave the invoice open on your computer and scan its QR code with the wallet app on your phone, as described above.

   If your funds are only in the extension, you can install the mobile app and add the same wallet with your recovery phrase. Type the phrase only into the official app, never into a website or a message. Otherwise, read sending without the QR code below.

After you pay

1. The invoice page updates by itself

   Keep the invoice page open. Within a few seconds of approving, it shows Payment received. You don't need to refresh it or send a screenshot. You can download the invoice as a PDF for your records.

   If it hasn't changed after a few minutes, check the wallet's activity list to see that the payment went through, and send your freelancer the transaction ID from there.

Paying from an exchange (or without the QR code)

Each invoice's QR code carries a hidden payment reference that lets Mintare match your payment to the invoice automatically. Withdrawals from an exchange, and payments typed in by hand, can't include that reference.

Ask your freelancer before you pay this way. If they agree, send exactly the invoice total in USDC on the Solana network to the address shown on the invoice page, and make sure the amount that arrives is the full total (exchanges often take their fee out of what you send). Then let them know you've paid so they can confirm it. Easier still: withdraw to your own wallet first, then pay with the QR code.