Verifiable credentials, anchored to a public blockchain
Issue tamper-evident credentials anchored to a public blockchain — verifiable by anyone in seconds, and still verifiable even if ChainAnchor disappears.
Verify a credential → · Already have an account? Log in
Using it solo or for a small team? →
A PDF takes minutes to fake and a logo seconds to copy. Employers can't tell a real certificate from a counterfeit.
“Did this person really graduate?” turns into emails to a registrar and days of staff time — multiplied across every request.
Badge platforms verify by phoning home to their own servers. If they change terms or shut down, your “verifiable” credentials quietly stop working.
Prove you control your institution's domain once. Your credentials then carry a verified-issuer badge.
One credential, or a whole cohort from a CSV — anchored to the blockchain in a single transaction. Files are hashed in your browser, never uploaded.
Recipients share a link, QR, or add it to LinkedIn. Anyone can verify it in seconds — no account needed.
Every credential is fingerprinted with SHA-256 and anchored on Base. Any change to the file is detectable — recompute the hash and compare.
Verification resolves against a public blockchain and an open-source verifier we don't control. If ChainAnchor vanished tomorrow, every credential we ever issued still verifies.
Credentials are tied to a domain-verified issuer, so a copied badge fails verification. Set expiry dates, and revoke single or in bulk when a qualification lapses.
The whole point is that you don't have to trust us. Check any credential yourself, read the contract on-chain, or run the verifier offline.
For institutions
Single sign-on, automated joiner/leaver provisioning, your branding on every credential, and bulk issuance for whole cohorts — with the controls procurement asks about.
Book a demoFor individuals & teams
You don't need to be a university to use ChainAnchor. Anchor any file or capture a web page to prove it existed, unaltered, at a point in time — and start free.
Timestamp designs, manuscripts, code, or research so you can prove you had it first — tamper-evident, on a public chain.
Contracts, agreements, and records — anchor the file (it's hashed in your browser, never uploaded) and share a verifiable proof.
Freeze what a page said at a moment in time as tamper-evident evidence — for disputes, compliance, or your own records.
Get started anchoring files and credentials. Anchored in regular Merkle batches.
Instant anchoring, unlimited archive storage, page monitoring, API & webhooks.
See Pro →SSO & SCIM, branding, bulk issuance, org management and support.
Talk to us →Tamper-evident credentials your recipients can prove, and anyone can check.
Immutable Proof of File Authenticity
Select a file. If it's new, it will be anchored. If it exists, its proof will be displayed.
Select a folder on the left to view its contents.