Reverse lookup
Encountered a quote, document, or image and want to know whether someone registered it first? Paste or drop it below. Your content is hashed and fingerprinted in your browser — neither the text nor the file is ever uploaded.
Near-duplicate matching needs roughly 8 words or more. Shorter snippets are still checked for an exact match.
Drop an image here or
Read locally. Never uploaded.
What this can and cannot find
An exact match is conclusive: the content is byte-for-byte what someone registered. A near match means the content is substantially the same — reformatted, lightly edited, or partially reused.
Near matching compares lexical overlap, not meaning. Content that has been thoroughly reworded while keeping its sense will not be found, because at that point it is mathematically indistinguishable from unrelated text. A "no match" result is therefore not evidence that nothing was claimed.
Only claims whose owner opted into near-duplicate detection are searchable this way. An exact-hash check always works.