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How to pay with crypto

Submission fees, email backups and donations are paid in cryptocurrency. This page explains how to get a wallet, buy crypto and pay. It is general information, not financial advice.

What is accepted

  • ETH on Ethereum, SOL on Solana, and USDC or USDT on Ethereum or Solana.

Other coins and networks (for example Bitcoin, USDT on Tron, or ETH on Base or Arbitrum) are not accepted. Solana network fees are a fraction of a cent; Ethereum fees change during the day, and your wallet shows the fee before you approve.

1. Get a wallet

You pay from a wallet that you control. For ETH, or USDC/USDT on Ethereum, you can connect it in the payment window; for SOL, or USDC/USDT on Solana, you send the exact amount yourself. Do not pay straight from an exchange: exchanges often deduct a fee, so the exact amount would not arrive.

  • For ETH, or USDC/USDT on Ethereum: MetaMask or Rabby (browser extension), a hardware wallet such as Ledger, or a phone wallet that supports WalletConnect. For SOL, or USDC/USDT on Solana: Phantom or Solflare.

Official download links

The guides are written by each wallet's own team and are kept up to date by them. Most are in English; your browser can translate them. Buying with a card goes through a partner company inside the wallet, which usually asks you to verify your identity.

Before you download, check the address in your browser and, in the app store, the developer name: fake copies of wallet websites and apps are common and steal funds.

Install wallets only from their official website or your phone's official app store. When you create a wallet it shows a recovery phrase of 12 or 24 words: write it on paper and keep it safe. Anyone who has it can take your funds. Never type it into a website and never give it to anyone. This platform will never ask for it.

2. Buy crypto

  • On an exchange: open an account with a regulated exchange (in the EU, one authorised under the MiCA regulation; in the UK, one registered with the FCA), buy SOL, ETH, USDC or USDT, then withdraw it to your wallet address. When you withdraw, choose the network that matches your wallet: Solana for SOL, Ethereum (ERC-20) for ETH, and Ethereum or Solana for USDC and USDT.
  • In your wallet: most wallets have a Buy button for paying by card or bank transfer through a partner company. This is simpler but usually more expensive.

Buy a little more than the price, for example 10 to 20% extra: the prices of ETH and SOL move, and the network fee must be paid too. If you pay with USDC or USDT, you also need a little ETH (on Ethereum) or SOL (on Solana) in the same wallet for the network fee.

Buying by card in the payment window (MoonPay)

If you have no crypto yet, the payment window has a "Buy crypto" link (Visa/Mastercard). It opens MoonPay, a separate company that sells crypto by card or bank transfer. Step by step:

  • Install a wallet first (step 1). The simplest and cheapest choice is Phantom with SOL: Solana network fees are a fraction of a cent.
  • In the payment window, click "Buy crypto". MoonPay opens in a new tab: keep this site and the payment window open.
  • Choose what to buy: SOL is the simplest. MoonPay suggests USDC; if you choose USDC, pick USDC on Solana, otherwise you will also need ETH to pay the Ethereum network fee.
  • Enter the amount: MoonPay usually requires at least 20 € or $20, and its card fee is up to about 4.5% (at least about $4). What you do not spend stays in your wallet.
  • Enter your wallet address: copy it from your wallet's Receive screen and check the first and last characters.
  • Verify your identity: by law MoonPay asks for your name, email, phone number and a photo of your ID. This usually takes a few minutes.
  • Pay by card. When the crypto arrives in your wallet, usually within minutes, go back to the payment window and pay with it.

Privacy: MoonPay keeps your identity together with the wallet address it sent the crypto to. If being linked to this platform could put you at risk, get crypto in a way that is not tied to your name, or ask someone you trust to send it to your wallet.

Buying by card inside Phantom

Phantom can also buy crypto for you by card, through partner companies such as MoonPay, Coinbase Pay or Stripe (which ones depends on your country). Step by step:

  • Open Phantom and tap Buy on the home screen (in some versions: the + button, then Buy).
  • Choose SOL (Solana). Do not choose a token called CASH, or the "Add Cash" option if it gives you CASH: it is not accepted here.
  • Enter the amount (most providers require at least about 20 € or $20) and choose Credit & Debit Card as the payment method.
  • Pick one of the offers shown: fees differ between providers, so compare how much SOL you receive. Then tap Buy and finish the payment on the provider's page.
  • Verify your identity if the provider asks: by law, card purchases need your name, email, phone number and a photo of your ID.
  • When the SOL appears in Phantom, usually within minutes, come back to this site and click the pay button. In the payment window choose SOL: it shows an address and an exact amount. In Phantom tap Send, paste that address, enter exactly that amount and confirm. Then click "Done" and, when asked, paste the transaction ID.

Keep a little SOL left over for network fees. The same privacy warning as for MoonPay applies: the provider keeps your identity together with your Phantom address.

3. Pay

Click the pay button on this site and choose the coin in the payment window. For SOL, or USDC/USDT on Solana, the window shows an address and an exact amount: in your wallet tap Send, paste that address, enter exactly that amount and confirm. Then click "Done" and, when asked, paste the transaction ID (in Phantom: open the payment in your activity and copy its ID). For ETH, or USDC/USDT on Ethereum, you can instead click "Connect Wallet" and approve the payment in MetaMask. The quoted amount is fixed for a limited time. Keep this site open until it confirms the payment: that usually takes a few minutes.

Privacy and safety

  • Transactions are public on the blockchain. Anyone who knows your wallet address can see that it paid this platform, and when.
  • Exchanges check your identity, so an exchange can link you to the wallet you withdraw to. Declarations from Tier 3 countries, including Ukraine, are free, so nobody there has to pay.
  • Check the network before you send. Payments sent on the wrong network or to another address cannot be recovered or refunded.
  • Beware of scams: we only take payments through the pay buttons on this site. We will never contact you to ask for a payment, a wallet address or a recovery phrase.