http://dnbible7sqskwppgaqohboxz7u5kzffjzdx3lxzpjtt3s6tzeiytb5ad.onion/bible/darknetmarkets/how-to-verify-an-onion/verify_onion/index.html
Always, regardless of where you get the onion from take the time to verify it. You never know when you have a typo, or a simple error. Taking the 10 seconds to verify can save your coins from falling to a phisher. Darkfail has a great tool to help you do it, but no one resource should be blindly trusted.