Free tool · for freelancers and studios
Handover Receipt: a file receipt for client deliveries List every file you deliver with its SHA-256 fingerprint, so your client can check them later.
Your files never leave your device. They’re read and fingerprinted here in your browser. Names and notes you type stay on this page and are gone when you close it. Nothing is uploaded, stored or seen by TimeBinder®.
| # | File | SHA-256 fingerprint | Copy |
|---|
A production note is your own statement. The page prints what you choose and doesn’t check it.
Your receipt
This receipt uses your device’s clock, so on its own it isn’t a timestamp. To add a recorded time that others can check, TimeBind the same files in the TimeBinder app. One TimeBind holds up to 10 files, like this receipt.
TimeBind this delivery →Handover Receipt is a free tool made by Inna Hall at TimeBinder, in Brisbane.
Handing files to a client? Make a simple receipt first. Drop in the files you’re delivering and this page lists each one with its SHA-256 fingerprint, worked out on your device. Print it or save it as a PDF and send it with the delivery. Later, your client can check that each file still matches its fingerprint.
Worth knowing: the date on a receipt comes from your device’s clock, so on its own it isn’t a timestamp. To add a recorded time that others can check, TimeBind the same files.
What is a file delivery receipt?
Short answer: a list of the exact files you hand over, each with its SHA-256 fingerprint, a 64-character code worked out from every byte of the file. You send it with the delivery. Later, you or your client can check any file against the list: if its fingerprint is the same, it’s the same file, byte for byte. If anything in the file has changed, the fingerprint is different.
It’s a record you make yourself, not a legal document. It lists the files and their fingerprints, with a date from your device’s clock. It doesn’t show that the client received the files, who made them, or when they were made.
What is TimeBinder? TimeBinder is a blockchain timestamping service. It shows that a digital file existed no later than a specific time, and that it still matches its fingerprint, by anchoring the file’s SHA-256 fingerprint to the Bitcoin blockchain. Files are hashed in your browser and never uploaded, and each TimeBind comes with a Proof of Time Certificate that can be checked later. It doesn’t show who created a file or that its contents are true.
How Handover Receipt works
Three steps, each time you deliver.
Drop your delivery.
Add the exact files you’re sending, up to 10.
concepts-r2.pdf · logo-final.ai · 8 moreFingerprint on your device.
Your browser works out each file’s SHA-256 fingerprint. Nothing is uploaded.
fingerprint 3f9a1c…07c1 · files stay with youSend the receipt with the files.
Print it to PDF or download the .txt, and send it with your delivery.
delivery-receipt-2026-11-12.pdf
How to add a recorded time to a delivery
Your receipt is your own record. For a time that others can check, TimeBind the same files.
Keep the exact files you sent.
Don’t re-export them after the receipt is made; a re-export can change a fingerprint.
same files · same fingerprintsTimeBind the same files.
Open the TimeBinder app and add the same files. They’re hashed on your device there too, so the fingerprints are the same and nothing is uploaded.
up to 10 files per TimeBindKeep the certificate with the receipt.
A TimeBind records that these exact files existed no later than the recorded time. Later, anyone you choose can check that a file still matches its fingerprint.
✓ certificate ready
What a receipt and a TimeBind do, and don’t, show
A Handover Receipt shows
- Which files you listed
- Their SHA-256 fingerprints
- A date from your own device
A TimeBind shows
- That these exact files existed no later than the time recorded on the Bitcoin blockchain
- Later, that a file still matches its fingerprint
Neither shows
- Who made the files
- Whether AI was used
- That the client received them or agreed to anything
- Whether anyone will accept them. How a client, platform or court treats them is up to them, and this isn’t legal advice
Handover Receipt: FAQ
Are my files uploaded?
No. Your browser reads each file and works out its SHA-256 fingerprint on your device. The files, their names and anything you type stay on this page and are gone when you close it. The site’s analytics count visits and when the tool is used, with no file details.
What can my client do with the receipt?
Check the files. They open the free SHA-256 file hash checker, add a file from your delivery and compare its fingerprint with the one on the receipt. If they’re the same, it’s the same file, byte for byte.
Does the receipt show when I made or sent the files?
No. The date on the receipt comes from your device’s clock. To add a recorded time that others can check, TimeBind the same files: a TimeBind records that they existed no later than the recorded time.
Why would a fingerprint stop matching?
Any change to the file’s bytes gives a different fingerprint, including a re-export or re-save that looks the same. Renaming a file doesn’t change its contents, so a renamed file still matches its fingerprint. Keep the exact files you sent.
What is the production note for?
It lets you state the main tools you used and whether you used generative AI, in your own words, on the same page as the file list. The page prints what you choose and doesn’t check it.
Can I check the .txt receipt with a command line?
Yes. The .txt lists each fingerprint and file name in the same format sha256sum uses, so a technical client can save it in the folder with the files and run sha256sum -c on it. It reports each file as OK or FAILED, and warns about the other lines of the receipt, which it skips.
Make it part of every handover
Make a receipt each time you deliver, keep the exact files you sent, and TimeBind the deliveries that matter, such as concept rounds and final files.