How to Document Your Art Process to Prove Authorship

For most of the history of digital art, nobody asked you to prove a piece was yours. Now it happens constantly. A client wants reassurance that an illustration was not generated. A contest asks for work in progress files. A stranger in the comments insists your painting is machine made. The good news is that a working artist already produces almost all the evidence needed to answer that question. The trick is to keep it on purpose instead of by accident.

This guide sets out a process record you can build into your normal workflow in a few minutes per piece. It does not require special software, and it does not slow you down. It simply turns the byproducts of real drawing into a tidy archive.

Why process beats any single proof

No single file proves authorship on its own. A timelapse can be faked, a layered file can be assembled after the fact, and metadata can be edited. What is very hard to fake is a consistent chain: thumbnails that match the final composition, a construction sketch whose errors were later corrected, layers that show the same brushes you use in every other piece, and dates that line up. Authorship is shown by the whole trail, and the whole trail is something only the person who did the work naturally has.

Save these five stages for every piece

Turn on timelapse recording and leave it on

Several painting apps can record every stroke as a replay. Procreate records a timelapse for each canvas by default, and Clip Studio Paint and Krita both offer timelapse or recorder features you can switch on. The recording is light on storage and it is the single most persuasive artifact you can share, because it shows decisions happening in order, including the ones you undo. Switch it on for every canvas, even studies, so the habit is automatic.

Name your layers like a working artist

A layered file with names like sketch, construction fix, flats, shadow multiply, and light screen tells a story. It also mirrors the stack described in layer blend modes for shading, which is exactly what a real painting looks like when you open it. Generated images arrive as a single flat layer; a real piece arrives as a history.

Store the record so it survives

• One folder per piece, named with the date and a short title.
• Inside it: roughs, construction, session saves, final, layered master, and the timelapse export.
• Keep two copies in two places, for example a local drive and an offline backup.
• Write a three line note: date started, tools used, and any references or assets you used. Honest notes about references are part of good practice, not a weakness.

How to share proof without giving your work away

When someone asks, share the least that answers the question. A short timelapse clip, two or three work in progress crops, or a screenshot of the layer panel usually settles it. Keep the layered master private. If the audience is a contest or a client, ask what format they accept; many now request work in progress images or a timelapse as part of submission rules.

For a durable, machine readable record attached to the file itself, look at provenance standards, covered in Content Credentials and C2PA for artists, and at what embedded data actually survives an upload in image metadata for artists.

Process record checklist

• Timelapse recording switched on before the first stroke
• Roughs and construction saved, including rejected versions
• Layers named and left unmerged in the master
• A dated session save at the end of each sitting
• Two backups, and a short note of tools and references

Sources and further reading

Primary references for the facts and definitions in this piece, all from independent publishers:

• Procreate Handbook: Time-lapse video: recording and exporting a canvas replay.
• The National Gallery: Pentimento: visible changes of mind as historical evidence of process.
• C2PA Technical Specification 2.1: the signed provenance record that can travel with a finished file.