HashMyWordsOpen app

HashMyWords guide

Verify an existing HashMyWords proof

Use the verification path that matches the proof you have: check a secret code against its HashMyWords record, or compare an exact file with proof evidence recovered from Hedera.

Open verificationLearn how it works

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There are two useful verification paths

Secret-code verification checks whether the private code saved with a HashMyWords receipt matches the verifier stored for that record. This is the verification tool available from the main HashMyWords app.

Exact-file verification is available from a file proof's verification link. It independently loads the HashMyWords proof hash from Hedera and lets you compare a local file with that recorded evidence.

Verify with a secret code

Open VerifyUse the Verify tool in the main HashMyWords app.
Paste the secret codeUse the 64-character secret code from the receipt you saved when the proof was created.
Check the resultA successful result confirms that the code matches the stored verifier for that timestamped HashMyWords record.
Inspect the ledger recordWhere available, follow the transaction or topic link to inspect the corresponding Hedera evidence independently.

Verify an exact file

For a file proof, open the verification link in the receipt or certificate. HashMyWords first checks the referenced Hedera evidence against the public Mirror Node.

Choose the file you want to test. It is hashed locally in your browser. For H2 proofs, that SHA-256 is compared directly with the SHA-256 recovered from HCS; historical H1 proofs are checked using their original proof-hash format.

What does “Verified” mean?

A successful verification establishes a specific technical fact: the supplied proof material matches the earlier HashMyWords record or, for exact-file verification, the selected file matches the cryptographic proof hash recorded in the referenced Hedera evidence.

Verification has limits. It does not automatically prove who created the content, who legally owns it, whether the content is authentic or truthful, or what legal weight a court or other decision-maker will give the record.

What if verification fails?

For a secret code, first make sure you copied the complete code from the correct receipt. HashMyWords cannot recover a lost secret code.

For a file proof, make sure you selected the exact original file. Renaming a file alone does not change its bytes, but editing, recompressing, re-exporting or otherwise changing the file normally changes its hash. Some mobile photo workflows can also re-export image bytes when a copy is created.

Frequently asked questions

Does a valid secret code prove authorship?

No. It confirms that the secret code matches the verifier stored with that HashMyWords record. It does not by itself prove authorship, identity or legal ownership.

Can I verify a file without uploading it?

Yes. Exact-file verification hashes the selected file locally in your browser. The file and its standard SHA-256 are not uploaded during that comparison.

Where do I find the verification link?

File-proof receipts and shareable certificates include a verification link. The secret-code Verify tool is available from the main HashMyWords app.

What if I lost my secret code?

HashMyWords cannot recover it. If you still have a file-proof verification link, you can independently check the Hedera proof hash and compare the exact file without revealing a secret code.

Continue in the Guide

Protect a PDF before AIHarden and timestamp a PDF before uploading it to ChatGPT, Claude, Gemini, Microsoft Copilot or another AI tool.Timestamp a fileLearn how to timestamp a document, image, video, archive or other digital file without uploading the original, then verify its public SHA-256 against Hedera.Timestamp text onlineTimestamp text online for free. Create a verifiable Hedera record of your words and keep a secret code so you can verify the same text later.Proof of existenceLearn how digital proof of existence works and create a verifiable timestamp that can help show matching content existed by a certain time.Hedera timestampingLearn how cryptographic timestamping works, what a proof hash can demonstrate, and how HashMyWords records proof hashes through Hedera Consensus Service.
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