World's First Professional Identity PassportProof-based identity, not claim-based profiles
Proofbook is the world's first blockchain-anchored Professional Identity Passport; where employment history, education credentials, skills, and corporate identity become fully immutable, tamper-proof, and globally portable. Unlike LinkedIn's self reported profiles, every credential on Proofbook is verified and cryptographically signed.
- Professional Identity Passport: employment, education and skills
- Blockchain-anchored, tamper-proof credentials
- Replaces background checks in seconds, not weeks
Credential Verified
Blockchain anchored · Just now
Verified in
0.3 seconds
Professional Identity PassportRick Sorkin
Associate, PH Law Firm
High School Diploma
High School, New York · 1999
Associate · Pearson Spectre Law Firm
2003–Present
Law Degree
Harvard Law School · 2003
0xRS7f9c3a...b3d9f07a · PolygonCredential Verified
Blockchain anchored · Just now
Verified in
0.3 seconds
Professional Identity Passport™Rick Sorkin
Associate
High School Diploma
High School, New York · 1999
Associate · PH Law Firm
2003–Present
Law Degree
Harvard Law School · 2003
0xRS7f9c3a...b3d9f07a · PolygonThe world's first unified Professional Identity Passport
Proofbook links LinkedIn, CVs, background-check, and KYC onboarding; all inside one decentralized, fraud-proof identity passport.
Employment Verification
Employers cryptographically sign your work history: dates, titles, achievements, and promotions, making it impossible to fake or alter. No more manual phone calls or email confirmations.
Education & Certification Layer
Universities and certification bodies issue verified academic credentials directly on-chain. Degrees, transcripts, and licenses stored immutably; no forgeries possible.
AI Skill Verification
Proofbook evaluates actual abilities through AI-driven assessments in coding, language, sales, reasoning, and more. Results are minted as Skill Certification NFTs that prove real ability, not self-reported claims.
Blockchain Anchoring
Documents are SHA-256 hashed, sealed, and anchored on the Polygon blockchain, making them tamper-proof and legally recognized at government and enterprise level.
Background Check Replacement
Traditional background checks cost $100 to $300 and take 3 to 21 days. Proofbook verifies identity, employment, education, and skills in seconds for under $1: instant, global, and fraud-proof.
Corporate Identity Passport
Companies get verified corporate profiles with immutable employee counts, leadership verification, and company legitimacy. No fake companies, no fake founders: trusted by banks, HR teams, and government agencies worldwide.
How Proofbook works
A simple four-step process from upload to verified credential
Upload Your Document
Upload your certificate, diploma, employment letter, or any credential. Your file enters the Pending Verification Queue with no hashing yet and no cost incurred.
Institution Review
The issuing institution (university, employer, certification body) reviews the document from their Institution Dashboard and cryptographically approves it with their private key.
Blockchain Sealing & Anchoring
Once approved, a forensic fingerprint of the document is created using advanced cryptography and perceptual intelligence. The signed hash is then anchored immutably on the Polygon blockchain.
Instant Global Verification
Your credential lives in your Professional Identity Passport. Any employer, bank, government, or verifier worldwide can instantly confirm its authenticity in seconds.
For Individuals
Build your Professional Identity Passport with verified employment, education, and skills that employers, banks, and governments trust. Replace fake CVs with proof-based identity that follows you globally.
- Pass background checks instantly
- Blockchain-anchored proof of credentials
- One-click sharing with employers
- Direct contact with any institution's authentication department
- Complete audit trail of verifications
For Institutions
Replace slow, expensive background checks with instant, blockchain-verified hiring. Cryptographically sign employee credentials, run AI skill assessments, and eliminate CV fraud; all in one platform trusted by banks, enterprises, and governments.
- Background screening & pre-hire checks
- Issue, verify & manage credentials at scale
- Built-in communication with candidates
- Complete audit trail for your institution's verified documents
Building the future together
We collaborate with leading platforms to deliver a smarter, more secure professional identity.
Proofbook AI
Proofbook AI builds secure AI systems for institutions, with a focus on verified knowledge, source-grounded answers, credential verification and controlled enterprise AI deployment.