Pay in Bitcoin

The price is in US dollars; you send the equivalent in BTC at the rate at the moment you send it. Convert then, not from a figure you noted earlier, and put the amount and the rate you used in your email. If the amount lands short, I will tell you what is outstanding rather than refuse the payment.

If you want to send more than the price, you are welcome to. It goes straight into the research this course is built out of: the captures, the hardware, and the work that has not been published yet. It is entirely optional and buys no extra access. The course is the same either way.

Send whatever total you like in the one transaction, and say in your email how much of it was the course and how much was the donation. Without that line an overpayment just looks like a mistake, and I will write back asking rather than assume.

Check the first and last four characters against your wallet after pasting. This is the one step on this page where a mistake is unrecoverable, and a clipboard is not always the last thing that wrote to itself.

1. 01The transaction ID. This is what proves the payment is yours, and without it there is nothing to match against.
2. 02The amount in BTC, the dollar amount you were converting to, and the rate you used.
3. 03Which course you are buying: Payment Systems: Magstripe, Tokenization, NFC and EMV.
4. 04The email address you want the course under. This is the account that gets access, so it must be one you can sign in with. Register first if you have not, and use exactly that address.
5. 05Whether any of the amount was meant as a donation.

I confirm the transaction on-chain and grant the course to the address you gave. Expect this to take hours rather than minutes. It is a person, in one timezone, not a webhook. You will get a reply either way. If you have not heard back within two days, reply to your own email rather than sending a second payment.