PEOPLE
Verified Professional References
Tamper-proof references, reviews, credentials, and endorsements — sealed permanently, controlled by the individual.
Reference checks are broken
Phone tag with referees takes days — or weeks.
References can be faked. You can't tell if they're real.
Candidates burden their referees for every new application.
Attestum fixes all three
Verify any reference in 10 seconds with a link.
Tamper-proof by design. Sealed on blockchain, independently verifiable.
Write once, share forever. One reference, unlimited shares.
Four pillars of professional trust
One verification engine. Multiple types of professional trust. Each encrypted end-to-end, sealed permanently, owned by the individual.
Professional References
Tamper-proof references sealed permanently. Write once, share forever, verify in 10 seconds.
Freelancer Reviews
Portable client reviews that follow freelancers across platforms. Your reputation, owned by you.
Academic Credentials
Verified degrees and certificates that graduates own and employers verify in seconds. Not days.
Skill Endorsements
Verified endorsements from real colleagues who've seen your skills firsthand. Not empty LinkedIn clicks.
How It Works
Three steps. No phone calls.
Seal
A colleague or manager writes your reference. Encrypted in their browser and sealed permanently. Nobody — not even Attestum — can change it.
Share
You control access. Generate time-limited links. Bind them to a specific email if needed. Your data, your rules.
Verify
Anyone with your link sees a free preview — who wrote it, their verified identity, and proof it hasn't been altered. Full content for a small fee. Verified in 10 seconds.
Writing a reference for someone? Check your email for their request.
Progressive trust, built in
Every attestation carries a visible trust level showing how strongly the attester's identity is verified.
Email Verified
Work email verified via magic link
LinkedIn Verified
LinkedIn profile connected and verified
Reputation Verified
Reputation built through consistent platform activity
Cryptographically Proven
Mathematical proof of identity via zero-knowledge cryptography
TRUST LADDER · BUILT BY ATTESTUM™
Get started with a free sealed reference
Request your first sealed reference. Free for writers and the professionals they vouch for.
No credit card required · Always free to create