How to buy anything with crypto

Most things in the world cannot be bought with crypto, and the reason is almost never the shop. It is that card networks and banks sit between you and the seller, and they only speak one language. This guide covers what actually happens when you pay in Bitcoin or USDT for something the seller would otherwise price in dollars — what is instant, what is not, and where people lose money by not reading one line.

The three kinds of purchase

Everything splits into three groups, and knowing which one you are in tells you what to expect.

Codes. Gift cards and store credit are the simplest case. A code exists, it is transferable, and it can be emailed the moment your payment confirms. Nothing is shipped and nothing needs your address.

Services on your own account. AI subscriptions work differently, and the difference matters: Anthropic, OpenAI and the rest issue no transferable codes, so what you are buying is a payment made on the account you already have. There is more on why in the guide to paying for AI subscriptions.

Physical goods and bookings. Phones and laptops, and flights and hotels, are sourced or booked to order. They need a delivery address or passenger names, they take days rather than minutes, and the price has to be fixed before anything is bought.

Picking a coin and a network

The single most expensive mistake in crypto payments is sending the right coin over the wrong network. USDT exists on Ethereum, Tron, Solana and others; they are not interchangeable, and funds sent to an address on the wrong chain are usually gone. The networks guide covers how to read an address and which chain to prefer for a given amount — the short version is that fees on Ethereum are set by demand, which Ethereum's own documentation on gas explains plainly, while Tron and Solana stay cheap regardless of order size.

Why the price is only good for twenty minutes

A quote in crypto is a quote in a currency that moves while you are reading it. Every payment page locks a rate for a short window and expires afterwards. That is not a sales tactic; it is the only honest way to price. If the window lapses, you get requoted at the new rate rather than being asked to top up a payment that was short. Payment windows and stuck payments covers what happens if you underpay, overpay or send late — all three are recoverable, and none of them are emergencies.

What you have to hand over

An email address, always — it is where a code or a confirmation goes. A delivery address, only for physical goods. Nothing else. No account, no card, no identity document. That is not a loophole; it is what is left when you remove the card network from a transaction. For selling, the no-KYC selling guide explains where that stops being true and why.

Where the risk actually sits

Crypto payments are irreversible. There is no chargeback, which is exactly why it is worth being slow about two things: the address you are sending to, and the shop you are sending it to. The US Federal Trade Commission's guidance on cryptocurrency scams is a good, unglamorous read on the patterns to avoid — most of them come down to urgency and a payment method that cannot be undone.

On the shop's side, the equivalent honesty is not claiming to hold stock it does not have. A store showing a live stock count on a phone it sources to order is guessing, and you find out after paying.

Start here

If you want the mechanics, read networks then payment windows. If you know what you want, the category guides are more useful: gift cards, AI subscriptions, phones and laptops, or travel eSIMs.