I've always wanted to try psychedelics but I won't until I have a chain of custody to prove it ain't laced with something nasty. Hopefully something like this comes to California soon!
Check out dark net markets on TOR. There's a whole marketplace with ebay style reviews so you can know who to trust. I always buy from people with thousands of 5 star reviews to put my mind at ease. Probably done about 5 dozen or more trips and the only time I've gotten fake/the wrong/laced drugs is when Ive gotten them in person.
It's so sad that the war on drugs people Keep making their rediculous arguments against it now there are so many places where it's legal and nothing has happened beside increased tax revenue and lives no longer being ruined by the police.
Maryland started selling recreational a few days ago and if you weren't looking for it you'd barely notice, certain shops now sell good quality, fairly priced weed to anyone over 21, society hasn't collapsed.