Dear Prof Buchanan OBE,

Thank you for providing this piece about ring signatures in cryptography and its link to Monero (XMR). I am curious to know if I have your permission to use the illustration showing the application of ring signatures with several people (e.g. Trent, Bob, Alice) and their public + private keys? It would be for a crypto YouTube channel, Cryptocurrency Logic. I focus on informing my viewers about various major cryptocurrencies, such as a particular project, its cases, partnerships and a price overview.

If granted permission, I will only opt to use the aforementioned photo and a few lines of information at most. I would then strongly encourage my listeners to check out your article to equip themselves with more knowledge about this topic.

Thank you for your time.

Yours sincerely,

Cryptocurrency Logic