Circumstantial evidence is certainly sufficient to convict in most (if not all) US jurisdictions.

Since you mentioned secondhand information, I think you might be thinking of hearsay.

Yes I was absolutely thinking of hearsay, thank you.

There are also several exceptions to the hearsay rule.

	▲	treetalker 2 hours ago \| parent [-]
		… and certain evidence that would otherwise be hearsay is often deemed non-hearsay by rule or statute!