Blockchain Demo
This demo shows how WorkID anchors verification results on the blockchain. The verification itself (identity check, colleague confirmation) happens off-chain. What you see here is the final step: creating an immutable, independently verifiable record.
Verification Complete
Candidate
TH
Thor Hesselberg
Stavanger, Norway
Role
Inventor of WorkID
Company
WorkID
Period
Aug 2022 — Aug 2025
Result
Confirmed
Verification Level
Advanced (32 questions answered)
Verified By
AB
Alex Brown
Engineering Manager · Direct manager
Apr 17, 2026
Blockchain Anchoring

Record this verification as an immutable attestation on Base L2 (Ethereum).

Hash verification data
Write attestation to Base L2
Verify on blockchain explorer

Attestation Recorded

Attestation UID
Transaction Hash
View on EAS Explorer View on BaseScan

What just happened?

We took the verification data (candidate name, role, company, period, verifier details, and the result of 32 assessment questions) and created a SHA-256 cryptographic hash — a unique digital fingerprint of that data.

No private data is stored on the blockchain. The actual questionnaire responses, performance scores, personal details, and contact information remain securely in the WorkID database. Only the hash — an irreversible mathematical fingerprint — is recorded on-chain.

This hash was then written as an attestation to the Base L2 blockchain (secured by Ethereum) using the Ethereum Attestation Service (EAS). The record is now:

Immutable — no one can alter or delete it, not even WorkID.
Independently verifiable — anyone can check the record on the public blockchain explorer without needing a WorkID account.
Tamper-evident — if anyone changes the data in the database, the hash will no longer match the on-chain record, exposing the tampering.