Private record A
Concept sheet A
- Receipted
- 17 September 2026 · 22:13:17 UTC
- Receipt ID
- 6db7c1a7f2ff41cfbd535ed2ce8732be
- SHA-256
- f3b06a39a5ff…43d100794
Hive receipted handoff · Live worked example
A design exchange, made checkable.
Three private circuit design sheets travelled from California to a circuit designer in Italy. Each exact file has a signed record. The drawings stay private. The handoff does not have to rely on memory.
Private design handoffSIGNED
OriginCalifornia
RecipientItaly
3private sheets
5linked records
0drawings published
01 · The records
Three sheets. Three signed fingerprints.
The sheets are not shown here because the base drawing belongs to the circuit's original design office. That is not a limitation. Permission is the beginning of provenance.
Private record B
Concept sheet B
- Receipted
- 17 September 2026 · 22:13:17 UTC
- Receipt ID
- 6a9cf8f0ab94412595ca7b4bd3be1bf8
- SHA-256
- f48f98a33df0…a3be2c
Private record C
Concept sheet C
- Receipted
- 17 September 2026 · 22:13:17 UTC
- Receipt ID
- 3318c4540c844893a9551a351382a257
- SHA-256
- 3dd6645d6eaa…b1d135
The public record identifies the exact bytes. It does not publish the drawing. Only someone who already holds a sheet can check it against the record.
02 · Check a file
Use the file you received.
Drop it below or anywhere on this page. Your browser calculates its SHA-256 fingerprint and compares it with all three signed records. Nothing is uploaded. No account is created.
Local comparison result
- File
- File size
- Computed SHA-256
- Signed SHA-256
- Matched record
- Receipt ID
Try to change it
Move one corner. Save a copy. Check again.
A one pixel edit changes the file's fingerprint. The result will say mismatch without deciding why the file changed or accusing anyone of anything.
03 · The chain
The exchange has a shape.
The source arrives. New work is created. Exact files are signed. The handoff links the set. The sequence is checkable without publishing the underlying work.
R0
Source drawing received
Its fingerprint was signed. The document was not published because it is not ours to publish.
Inspect source recordR1 to R3
Three design sheets finished
Each exact file received its own signed fingerprint at the same recorded moment.
R4
Handoff set linked
One final signed record names the source receipt, the three design receipts, and the three file fingerprints as a single handoff set.
Inspect handoff record04 · What this changes
A design office can make every handoff easier to explain.
The receipt does not judge the design. It preserves selected evidence about the exact file, the recorded time, and its place in the handoff.
What was delivered
The exact file can be compared with the signed fingerprint even when the drawing itself remains private.
When it was recorded
The signed record carries an issued time that does not depend on an email folder or one person's recollection.
What came next
A later revision can receive a new receipt and link back to the file it superseded. The earlier design does not disappear.
Private work. Publicly checkable handoff.
If the drawing matters, the handoff should not depend on memory.
Checking is free for anyone. A design office can start with one project, one file set, and the systems it already uses.
The records on this page are demonstration records and intentionally store short text descriptions alongside fingerprints. Customer records can store fingerprints only.
Hive establishes the integrity of the signed record. It does not establish design authorship, engineering correctness, permission, or independent source truth by itself.
The live service retains the signed record. Anyone who saves an earlier witness log root can detect if the logged history later moves underneath it, for as long as the service runs.