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Your donation supports our existing activities and helps us expand our work.  If you want to give to a specific QCO project, please specify the project’s name in the memo line or notes field of your donation.

By credit card / PayPal:

or by Bitcoin:

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at our Bitcoin address: 1EDFgxTaq53N7oz54UZWW36PZDLnvNshkx
(if you need maximum security and anonymity, please contact us to get a one-time Bitcoin address)

or by mail:
P.O. Box 20165
Stanford, CA 94309-0165

or contact us, if you’d like to donate by some other means (e.g., direct bank transfer).

A Note About Directed Donations:

If making a directed donation to a specific purpose or project, please remember to write the purpose in the memo line or notes field of your donation. (When donating via PayPal, the notes field is in “Add special instructions to the seller” after logging in.) For example, to donate to the Sita Distribution Project, just write “Sita Distribution Project”. is a non-profit (501c3) organization, and donations to us are fully tax-deductible to the extent permitted by law.