Contact Me

Please feel free to contact me directly with any questions.

  • Email:
  • Twitter: @mkhelfman
  • Telegram:

For questions about Crypto is Easy, please begin your message with “CIE – ” and then type your message. Like so:

CIE – hi Mark, can you answer my question?

How to start a message to me

What People Say

The way to get started is to quit talking and begin doing.

Walt Disney

It is our choices, Harry, that show what we truly are, far more than our abilities.

J. K. Rowling

Don’t cry because it’s over, smile because it happened.

Dr. Seuss

Let’s build something together.

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