You can send comments to SEC regarding BTC ETF
Some of the comments posted are pretty hilarious but if you want to send yours
There are 3 methods of doing so. Please note that the file number for the BTC ETFs on the SEC website is SR-CboeBZX-2018-040.
Online form
Comments can be submitted via this online form.
Email
Send comments to
rule-comments@sec.gov.
The subject line of your message must include the File Number for the rule. This is the number that begins “S7-” or “SR-”.
If you attach a document, indicate the format or software used (e.g., PDF, Word Perfect, MS Word, ASCII text, etc.) to create the attachment. Please note that the SEC now accepts comment letters in PDF format. DO NOT submit attachments as HTML, GIF, TIFF, PIF, ZIP, or EXE
Using the traditional ‘Snail Mail’