Why does Ritual need me to fill out a W-9 form – I already report my sales from Ritual on my income tax return? – Ritual Partner Support

The W-9 certifies that you are not subject to backup withholding tax and that you are responsible for paying your own taxes
Should your gross payments exceed $600, a 1099-K will be issued to you
The completed W-9 is used by Ritual to fill out the 1099-K form, if applicable.
The 1099-K form is used to report the payments on orders that flow through Ritual.
The 1099-K will be filed with the IRS and will be used by you when you prepare your tax return at the end of the year to ensure completeness.
You will only report Ritual sales once.

Why does Ritual need me to fill out a W-9 form – I already report my sales from Ritual on my income tax return?