check a COA.

An eligible shared check publishes its grade and reasons; the vendor, testing lab, batch, and test details read from the document; every retained certificate page; and a link to the retained PDF or high-resolution source image. A multi-image upload links to the retained source copy for each page. The uploader is never shown. Missing pages or an incomplete read keep it private. If a photo still cannot be read, the checker asks for the original PDF or a flat, sharp, uncropped, glare-free reshoot instead of publishing a grade. Uploads covered only by an older disclosure stay private until the uploader opts in under the current one. Before publication, you can keep this upload private. Once published, it cannot be deleted or removed from the public board. Its source and grade history stay in the record. You can request an automatic regrade.