Verify
Same map,or a changed copy?
A shared map file can be edited on the way. Its content hash cannot: recompute it here and compare it with what the publisher recorded on Robinhood Chain. Everything runs in your browser.
Check a map file
Paste a map JSON (exported from the canvas) or choose the file. The content hash is recomputed here from the canonical form, the same way the publisher did.
Check a review note
An attestation stores only the hash of its note. If a reviewer shares the note text, paste it here and compare the hash with the one on the map page.
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Leading and trailing spaces are trimmed before hashing, as the site does when attesting.