What it costs to protect your authorship
Not every proof of authorship costs the same — in price or in weight before a court. Here are the real options and what you pay for each.
Notary deposit runs 30–100 BGN per work, needs you to show up in person, and isn't something you can do often. For digital work with dozens of versions, it's impractical.
Direct provider service (B-Trust, DigiSign) is built for organizations doing thousands of certifications a month. It needs technical integration and upkeep; for a single creator, the cost per certification can reach 5–15 BGN before you count setup.
A StampR certificate costs €2.50 — no subscription, no minimum, no integration on your side. You pay only when you need it. You get a certificate of authorship with a verified date, recognized across the EU, that anyone can verify independently. The technology behind it is a qualified electronic timestamp — but to you, it's simply a document proving the work is yours.
If you certify regularly — recordings, design versions, contracts, code — it's under €3 per file with no usage cap. See full pricing or start with your first certificate free.
Cost by option
| Option | Cost | Who it's for | Technical integration |
|---|---|---|---|
| Notary deposit | 30–100 BGN/work | one-off cases | no |
| Direct service (B-Trust/DigiSign) | 5–15 BGN/each + setup | organizations, thousands/mo | yes |
| StampR certificate | €2.50/certificate | creators and small teams | no |
Frequently asked questions
- Is there a subscription?
- No. You pay only for the certificates you issue. The first one is free.
- Why is it cheaper than a notary?
- It's fully digital — no in-person visit, no integration, no monthly fees.
- Any hidden fees?
- No. €2.50 per certificate, no minimum.
- Is it recognized across the EU?
- Yes — the certificate has legal standing in all 27 member states under eIDAS.
Frequently asked questions
- Is there a subscription?
- No. You pay only for the certificates you issue. The first one is free.
- Why is it cheaper than a notary?
- It's fully digital — no in-person visit, no integration, no monthly fees.
- Any hidden fees?
- No. €2.50 per certificate, no minimum.
- Is it recognized across the EU?
- Yes — the certificate has legal standing in all 27 member states under eIDAS.