Then usually you’re out of luck
We are required to hold it by law since your profile indicates you’re either a U.S. citizen or a U.S. resident. Without an SSN, we can’t issue your 1099 Tax Form, which you’ll need for your annual tax filing.
If you are no longer a citizen or resident of the United States, please contact our support team who’ll be happy to help.
Every cryptocurrency platform operating in the United States will ask for your SSN if you’re a U.S. citizen or resident.
For US customers, Gemini is required by law to collect your SSN/SIN to comply with local regulations and licensing requirements
To learn more about how we safely and securely store this information, please refer to our Security page.
https://support.gemini.com/hc/en-us/articles/115004690803--Why-is-my-SSN-SIN-required-
The same is said for Coinbase and other exchanges. This is ESPECIALLY if you happen to be from the United States. Which, from what I’ve seen in your posts in the past, you claim to be from the United States.
Another website (I nevyer heard of Luno before, don’t know if they are legit, but I like their explanation), which kind of links to better details, is:
A Social Security number (SSN) is a 9-digit number that the US government issues to all US citizens and eligible residents who apply for one.
To help the government fight the funding of terrorism and money laundering activities, the USA PATRIOT Act, a Federal Law, requires all financial institutions to obtain, verify, and record information identifying each person who opens an account.
It’s for this reason that we ask our US customers to enter their SSN as part of the sign-up process.