Electronic Seal

With Electronic Seal, we offer a blockchain-based electronic seal for companies that can guarantee tamper-proof data (legally issued, immutability and authenticity of data). The seal is stored in the highly secure Swiss Trust Chain. Electronic Seal allows the cost-effective mass sealing of data.

Diagram: Electronic Seal blockchain signature from Swisscom


As a Swisscom Blockchain customer, you will benefit from the following features with Electronic Seal.



Managed Service

Would you like to find out more?

Would you like to find out more about Electronic Seal? You can request a non-binding needs analysis or get started right away. Don’t hesitate to get in touch.

Nicole Sigrist

Nicole Sigrist


Cost saving

The costs are a fraction of those associated with a solution based on a public blockchain. Electronic Seal can be scaled to any volume.


The high security of the blockchain based seal combined with decentralised storage in the private Swiss Trust Chain blockchain make tampering impossible.


Electronic seals are certified and validated using an easy to integrate, standardised interface.

  • Leonie Flückiger, CTO, Adresta

    «With the Swiss Trust Chain and our collaboration with Swisscom regarding the encryption of watch certificates, the industry finally has a blockchain solution with trusted partners and data storage in Switzerland.»

    Leonie Flückiger, CTO and co-founder, Adresta AG


We offer a range of service packages based on the volume of documentation you wish to certify using Electronic Seal. If your needs should change, it is easy to alter your package.

Growth S

  • API provisioning
  • Excluding support
  • 500 E-Seals per year
  • Including verification
  • Basic service level agreement

per month


Contact us

Growth M

  • API provisioning
  • Excluding support
  • 5,000 E-Seals per year
  • Including verification
  • Basic service level agreement

per month


Contact us


  • API provisioning
  • Including support
  • Unlimited E-Seals per year
  • Including verification
  • Premium service level agreement

dependent on volume

Contact us

Digitise your business processes

Do you wish to digitise your business processes? The Swisscom holding company ajila enables businesses to digitalise their forms, contract agreements and signatures, making paper forms and inflexible PDFs a thing of the past.

Insights, News & Events

Leonie Flückiger

Swisscom Blockchain News

Certificates for luxury watches. Adresta relies on Swisscom Blockchain

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Meet Roland Cortivo in a Live Keynote Panel: "Enabling digital transformation with blockchain"

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Swisscom on Forbes Blockchain 50 - Class of 2021

Go to report