- 1 Enter information
- 2 Digital proof
- 3 Verify
Digital document (simulation)
Fill in the sample fields below (examples are pre-filled — adjust freely).
Digital proof created — now tamper-proof
Your information is now permanently sealed on a public ledger. Any later change will be detected.
Technical details
All credential fields (serial, registry number, name, date of birth, institution, major, classification, issue date) are canonicalized and keccak256-hashed into a 32-byte code representing the diploma. That code plus a timestamp is written to the DXASandboxRegistry contract on Base Sepolia via a server-side relayer. Verification re-hashes what the employer entered and compares it to the sealed code; a single differing character yields a completely different code.
How it works
- 1
School enters the credential
Serial number, registry number, name, major, classification, issue date.
- 2
Seal the original
The system fingerprints the credential and stores it permanently on a public ledger.
- 3
Employer scans the QR
Scan the QR on the diploma — the system checks the seal code on the ledger and matches the original data, flagging genuine or fake at once.
The problem you face
- ✕Fake diplomas and certificates are sophisticated — nearly indistinguishable from real ones by eye.
- ✕Manual checks mean phone calls and letters to the school, days of waiting, and even the reply can be forged.
- ✕One fake degree slipping through hiring brings legal risk, reputational damage, and harm to genuine graduates.
What you gain
- Instant, self-service checks. Employers match the diploma against the sealed original themselves — no need to contact the school.
- Catches any altered detail. Change a name, major, classification or serial — even one character — and it flags “no match” instantly.
- Protects the school’s reputation. Every credential carries an original proof sealed by the school, stopping impostors from issuing fakes in its name.
Real-world scenario
HR team & university
A university seals every degree right at the graduation ceremony. Years later a candidate submits a diploma marked “Distinction” for a senior role. HR enters the serial and details to verify — the system shows the original was a lower grade and the registry number does not match. The diploma was altered, and it surfaced in seconds instead of weeks of waiting for a verification letter.
Frequently asked questions
If I mistype one Vietnamese diacritic, does the check break?
You do not type it. Each credential carries a QR holding the original data and the seal code; the tool reads it straight from the QR (machine-read, exact). On verification the system does two independent things: (1) check the seal code is on the ledger, (2) re-hash the original data to confirm it matches the code. Because it is machine-read, a genuine credential is never wrongly rejected over a typo or missing diacritic.
Is student data published on the blockchain?
No. Only a “digital fingerprint” is public; names, dates of birth and other details never leave the school’s system.
Do employers need an account or special software?
No. Anyone holding the diploma can re-enter the info and verify for free, no signup required.
Does it work for short courses and vocational certificates?
Yes. Any diploma or certificate issued by a school or center can be sealed and verified the same way.