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UVerify
Built on Cardano
Prove authenticity.
Forever.
UVerify records a tamper-proof fingerprint of any file or document on the Cardano blockchain. Your data never leaves your device.
Every certificate is a fully interactive decentralized app: shareable, instantly verifiable, and permanent. No blockchain experience required.
What brings you here?
We will point you in the right direction.
Your file's unique fingerprint, stored on Cardano
How it works
Drop your file or paste text
UVerify computes a unique fingerprint of your file locally on your device. Nothing is ever uploaded or sent to a server.
Sign one transaction
The fingerprint and your metadata are stored permanently on the Cardano blockchain. A small fee applies: typically ~0.17 ADA, up to ~0.45 ADA with extensive metadata.
Share a permanent proof link
Anyone can verify by dragging the file onto the certificate page. The metadata lives fully on-chain, readable by any validator. No account, no login, forever verifiable.
Certified on Mainnet
Real-time UVerify usage statistics on Cardano mainnet
Real-world use cases
The same infrastructure, powering wildly different products.
Pet Necklace
A lost-pet necklace reveals the owner's phone number only when the NFC chip and blockchain hash are combined. No database, no server, GDPR-safe.
Walkthrough on the Cardano community channel
Read the docs →Connected Goods
Physical products ship with a QR-gated certificate. Scan the item, claim ownership, mint your NFT, and build a tamper-proof link tree, all in the browser.
33 certificates issued on mainnet
Read the docs →Academic Credentials
Universities notarize diplomas via API. Graduates share a permanent URL. Employers verify instantly, no phone call, no account, forever.
Batch 500 diplomas for ~4 ADA total
Read the docs →Product Passports
Manufacturers record authenticity at the production line. A QR code on the packaging points to an immutable, permanent record, even if the brand disappears.
Read the docs →Private Chain Attestations
Anchor private or consortium blockchain states on Cardano. External auditors verify Merkle proofs without accessing the private chain.
Read the docs →Explore more use cases in the docsWhy UVerify?
A platform anyone can build on, and deploy from.
Enterprise-Ready
- White-label your own certificate UI with full branding control
- Build on UVerify as a platform and earn fees when others use your templates
- Fee sponsorship available for eligible organizations
- Batch issuance: 500 diplomas for ~4 ADA total
- Built on Cardano: open, auditable, and permanent
Developer-Friendly
- Public REST API: no key, no rate limits
- SDKs for TypeScript, Python, and Java
- Custom UI templating engine for any certificate design
- Fully open source: self-host the entire stack
Build on UVerify
Open source. No API key. No rate limits. Start in minutes.
REST API
- No API key or account needed
- Build, sign, and submit transactions
- Verify any hash instantly
- Statistics and analytics endpoints
Self-Host
- Backend: open-source NestJS
- Frontend: open-source React
- Docker + docker-compose setup
- Full environment variable guide
UVerify
Transparent. Immutable. Trusted.
Join us on Discordhello@uverify.ioImpressum §5 DDG
Fabian Bormann · c/o IP-Management #47491
Ludwig-Erhard-Str. 18 · 20459 Hamburg