This is an educational profile built from public sources. It isn't a rating, an endorsement, or an opinion on any item or seller. How we source facts. Last researched Oct 12, 2026.
Who runs it, and where
ACOA describes itself as an authentication service for entertainment, music, political and space autographs. It lists Justin Steffman as CEO and lead authenticator, and says it has certified over 500,000 autographs since 2018. [1]
Online cert lookup
ACOA's website has a "Verify a certificate" feature. [1]
Press and court history
We couldn't find a reliable source for this yet.
What marketplaces and other authenticators say
As of Oct 12, 2026, AutographCOA does not appear on eBay's published list of people and organizations whose COAs/LOAs are not allowed. That list is not an endorsement, and eBay says COAs are only as valuable as the reputation of the issuer. [2]
