Tessera.

A diploma that nobody can forge.

Your certificates stop being a PDF anyone can edit. They become credentials signed on-chain that an employer checks in seconds, without calling you or writing to us.

  • Verifiable by anyone, in seconds
  • With a professional preview for LinkedIn
  • Yours forever, even if Tessera is gone
Create my portfolio for free I am an institution

Free for students · no wallet or blockchain knowledge needed

tessera.blokis.dev/verify/1

Verify a real certificate

Enter the link or scan the QR code of any credential issued on Tessera.

https://tessera.blokis.dev/verify/1

No account. No permissions. Just the truth.

Public verificationAnyone can check a credential, in seconds.
On-chain credentialsRecorded across several blockchains for more security and transparency.
Fast issuingTurn your achievements into credentials in under 10 seconds.
Tessera.Real achievements. Opportunities without limits.Powered bypolygonavalancheunlockhsk chain
The problem

The degree you worked so hard for fits in a file anyone can forge.

A PDF proves nothing on its own. Tessera changes the format, not the effort behind it.

The PDF certificate

as it is today

  • A PDF can be edited in two minutes with any editor
  • Verifying means phoning the institution
  • If you lose the file, you lost the achievement
  • Nothing proves the degree is really yours

The SBT credential

with Tessera

  • Signed on-chain: altering it is impossible
  • Anyone checks it themselves, in seconds
  • It lives on the blockchain, not on your hard drive
  • Soulbound: tied to you, non-transferable
How it works

From your diploma to the blockchain, without having to understand the blockchain.

  1. Step 01

    You finish your course

    Your institution issues the credential from Tessera. You do not have to do anything at all.

  2. Step 02

    You receive your credential

    It arrives by email with a wallet already created for you. No seed phrases, no fees, no cryptocurrency.

  3. Step 03

    You share it wherever you want

    A link with a professional preview for LinkedIn, your CV or your portfolio. It looks good everywhere.

  4. Step 04

    Anyone verifies it

    The employer opens the link and checks its authenticity instantly, straight against the blockchain.

Your professional portfolio

Much more than a PDF

Your certificates become verifiable, shareable and permanent assets. Made so the world trusts your achievements without asking for explanations.

Verifiable credentials

Every certificate is signed on-chain. Anyone can check its authenticity without depending on Tessera.

Ready for LinkedIn

Share your achievement with a professional preview. It generates more visibility and real opportunities.

Impossible to forge

ERC-5192 (soulbound) standard. Nobody can transfer, duplicate or tamper with your credential.

No wallet needed

Tessera holds your credentials for you. Whenever you want, you can link your own wallet.

It stays forever

Archived on Arweave + IPFS. Even if the platform changes, your credential remains verifiable.

A public page per achievement

Every certificate has its own URL with a verification QR, ready for your CV or portfolio.

Are you an institution? See Tessera for institutions →
Under the hood

We are not asking you to trust us.

Everything rests on public, auditable standards. If Tessera disappeared tomorrow, your credentials would still be verifiable.

ERC-5192

Soulbound. The credential stays bound to its owner: it cannot be sold, transferred or lent.

ERC-721 + ERC-4906

Open standards that any wallet, explorer or indexer in the ecosystem understands.

Polygon

A public, low-cost network. Verifying does not depend on our servers or our permission.

Verificacion por hash

The file identifier is derived from its content. A single altered byte changes the CID.

IPFS + Pinata

The metadata and the certificate design stay replicated and permanently accessible.

Firma EIP-712

Every issuance is signed with a per-institution nonce. Nobody can reuse or duplicate a signature.

What they say

Academic and product teams already issuing on Tessera.

“Pasamos de imprimir PDFs a emitir 800 credenciales por bootcamp en una mañana. Nuestros alumnos las comparten en LinkedIn el mismo día.”
MR

María Rojas

Directora Académica · Devstart

“La verificación pública nos quitó 6 horas semanales de soporte. Las empresas confían sin pedirnos confirmación manual.”
CM

Carlos Méndez

COO · Atlas University

“Conectamos Tessera con nuestro LMS en menos de un sprint. Webhooks firmados, idempotencia, todo lo que esperamos de una API robusta.”
AI

Ana Iturri

CTO · Edify Online

“Nos enamoramos del flujo soulbound. Los certificados son nuestros otra vez, no fotocopias en una carpeta.”
DS

Diego Soto

Rector · Instituto Norte

“Compliance verificó GDPR en una semana. La PII vive off-chain y el hash on-chain hizo todo más fácil.”
LF

Lucía Fernández

Legal & Risk · Acrópolis

“El dashboard es elegante. Los profesores entienden la emisión sin tutorial. Eso vale oro.”
TV

Tomás Vidal

Head of Product · Coderhouse

FAQ

Objections answered before your first issuance.

This part matters too: blockchain, compliance and payments usually sound complex. Here we make it clear, direct and verifiable for a serious buyer.

Built for institutional sales

Compliance, custody, gas and operational continuity

No. Tessera creates custodial wallets by default. If a student wants full autonomy, they can link their own wallet (MetaMask, Coinbase, etc.).

Your portfolio is waiting

Start with your first verifiable achievement. It is free forever.

Create your account, connect the certificates you already have and start sharing them with a professional preview on LinkedIn.

Create my portfolio for free I already have an account

No card · no wallet · no small print