Accredited investor requirements are NOT “a good faith requirement,” and there absolutely are ways “for Purism to validate your accredited investor status.” This statement, in a general solicitation e-mail no less, would not get sign off from any competent securities counsel.
Their fundraising site is tighter but still leaky. The notes are governed by Washington law [1], for example, which means e.g. they can’t ignore investor protections for non-Americans (as they claim). Also, other jurisdictions have securities laws—it is incorrect to claim if “not a United States citizen there is no restriction to invest” [2].
Finally, they are selling these notes through their store, which offers check out with Stripe. I was able to get to a credit-card checkout page. That’s a no-no on multiple levels.
(If you want to do something like this properly, look into Tier 1 Reg A+ offerings [3]. There are turnkey providers, e.g. StartEngine [4], though I'm skeptical of anyone requiring large up-front payments.)
[1] https://puri.sm/wp-content/uploads/2021/07/purism-convertibl...
[2] https://puri.sm/ir/convertible-note/
[3] https://www.bartonesq.com/news-article/reg-a-offerings-faqs/
[4] https://www.startengine.com/blog/regulation-a-what-entrepren...