Upload your file → generate fingerprint (SHA-256 hash) + timestamp → receive a registration record with public QR verification. Vietnam law compliant, no crypto wallet, no NFT hassle.
Vietnam IP law grants copyright the moment you create — but when disputes happen, courts demand evidence of WHEN you created. TacPhamSo.com creates that evidence in 3 minutes.
SHA-256 hash creates a unique 64-character signature for your file. Any change — even 1 character — produces a completely different hash. Globally accepted in courts.
Server timestamp + hash logged immutably. You can prove your work existed at a specific time, before anyone else.
Anyone can verify your work via QR + URL — partners, lawyers, judges. Upload your original file to instantly compare hashes in their browser.
Based on Luật Giao dịch điện tử 2023 + Bộ luật Dân sự 2015. Recognized as primary digital evidence. Not blockchain hype.
TacPhamSo.com is part of TuPhap Platform, with VDD Lawyers as exclusive legal partner. When you need expert help — escalate to a lawyer in one click.
No wallet, no gas fee, no NFT confusion. Some platforms push blockchain/NFT — but Vietnam law has not yet recognized NFT as legal proof of ownership.
Drag & drop or select your file. We support most creative formats up to 50MB.
Add author name, work title, description, completion date. Choose a plan that fits your need.
Get a unique ID + email + public verification URL with QR code. Anyone can verify it instantly.
If you create something digital, you need a way to prove it is yours.
Start free. Upgrade when you need stronger evidence or legal support.
| TacPhamSo.com | Save to email/Drive | NFT/Blockchain | Cục Bản quyền | |
|---|---|---|---|---|
| Speed | 3 minutes | Instant | 10-30 min | 15-20 days |
| Cost | 0đ - 2.9M | Free | ~3M + gas | 350K - 600K |
| Vietnam law evidence | ✓ Yes | × No (tampering possible) | × Not recognized yet | ✓ Official certificate |
| Public verify | ✓ QR + URL | × Private | ✓ But complex | Limited lookup |
| No tech required | ✓ Yes | ✓ | × Need wallet | ✓ |
| Lawyer support | ✓ Built-in (Legal plan) | × | × | Hire separately |
Recommended: Use TacPhamSo.com for immediate digital evidence + register at Cục Bản quyền for the most important works. Both complement each other.
A TacPhamSo.com record is primary digital evidence under Vietnam's Law on Electronic Transactions 2023 and Civil Code 2015. The SHA-256 hash + timestamp prove your work existed at the recorded moment and has not been altered since.
However, it does NOT replace the official copyright certificate issued by the Vietnam Copyright Office (Cục Bản quyền tác giả). For high-stakes commercial works, we recommend using both.
Cục Bản quyền issues an official state certificate (Giấy chứng nhận) — costs 350K-600K, takes 15-20 business days, requires paperwork.
TacPhamSo.com creates supplementary technical evidence — 3 minutes, free or 199K, no paperwork. It does NOT replace the official certificate; it complements it.
Best practice: register with TacPhamSo.com immediately when you finish creating (cheap, fast), then file with Cục Bản quyền for the most valuable works.
NO. Your original file is stored privately on encrypted server. The public verification page only shows metadata: work title, hash, timestamp.
You can also set the record to "Private" mode — which hides even the author name from the public page. Only people with the exact code can find it.
Under Vietnam IP Law, copyright arises automatically when a work is created — registration is not required for the right to exist.
BUT — when a dispute arises, YOU must prove you were the author at a point in time BEFORE the disputant. Without evidence, the law cannot help. This is exactly where TacPhamSo.com provides value: timestamped proof you can present to courts.
SHA-256 is a cryptographic "fingerprint" of your file — a unique 64-character string. Any change to the file (even 1 character) produces a completely different hash.
When TacPhamSo.com records your hash with a timestamp, you can later prove the original file existed at that time. International courts have accepted SHA-256 hash as digital evidence for years.
Yes. Per Vietnam Civil Procedure Code, electronic data with digital signature/timestamp is admissible evidence.
However, persuasive value depends on: (1) reputation of the issuing entity, (2) integrity of chain of custody, (3) corroboration with other evidence. For high-stakes cases, our Legal plan (2.9M VND) includes consultation with VDD Lawyers to assess your specific situation.
Free plan: your file is retained 12 months. Basic plan: 10 years. You can request a copy from us anytime.
Even without the file, the registration record + hash + timestamp on our verify page still serves as evidence. Anyone who later claims the work needs to provide a file that matches your recorded hash — practically impossible to fake.
TacPhamSo.com provides Digital Work Registration Records — including cryptographic hash of your file, server timestamp, and public verification ID. These records have primary evidentiary value under Vietnam's Law on Electronic Transactions 2023 and Civil Code 2015.
However, the Record does NOT replace the official Copyright Registration Certificate issued by the Vietnam Copyright Office (Cục Bản quyền tác giả — Ministry of Culture, Sports and Tourism), does NOT replace official legal opinion from a lawyer, and is NOT a judicial determination of ownership.
Under Vietnam IP Law, copyright arises automatically upon creation of the work, regardless of registration. The TacPhamSo.com Record helps you prove ownership when disputes occur — but the underlying right exists from the moment of creation.