💼 PROFESSIONAL REFERENCES
Professional references, verified in 10 seconds
Tamper-proof. Reusable. No more phone tag. Collect sealed references that you own and share instantly.
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.
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.
Built for trust
Every reference on Attestum is protected by multiple layers of verification.
Can't be edited or faked
Every reference is encrypted client-side and sealed permanently. Once on-chain, no one — not even Attestum — can alter or delete it.
Attester identity confirmed
Reference writers verify their work email before their attestation is marked live. Higher trust levels coming soon: LinkedIn, reputation, and zkTLS.
Your reputation, your control
The subject owns their references. They choose who sees them, when links expire, and can revoke access at any time.
Verified on Base blockchain · Encrypted end-to-end · Independently verifiable
Simple, transparent pricing
Free for candidates and reference writers. Employers pay to verify.
Pay as you go
€3.00/verification
- Free preview always included
- Full reference content
- Blockchain proof
- No commitment
Pro
€50/month
- Unlimited verifications
- Everything in Pay as you go
- Priority support
- Team dashboard (coming soon)
Frequently asked questions
Is it free to write a reference?
Yes, always. Writers and candidates never pay. Attestum is completely free for the people a reference is about and the people who write them.
What do I get in the free preview?
You see the attester's name, relationship, trust verification level, blockchain proof, and creation date. Full reference content requires payment.
How do I get started as a candidate?
Sign up, enter your referee's work email and details, write the reference content. Your referee gets a verification email to claim and seal it.
How does blockchain verification work?
Every reference is sealed on blockchain at creation. This creates an unchangeable record. When you verify, we check the content matches the original seal — proving it hasn't been tampered with.
Ready to verify with confidence?
Create your first sealed reference in under 2 minutes.
No credit card required