Codenotary Launches First Free, Open Source Notarization and Verification Service for Creating Software Bill of Materials

Community Attestation Service guarantees the provenance of code, makes compliance with Presidential cybersecurity order fast and easy

HOUSTON, October 26, 2021– The U.S. Executive Order on Improving the Nation’s Cybersecurity includes “providing a purchaser a Software Bill of Materials (SBOM) for each application.” Codenotary Community Attestation Service — the first free, open source artifact and container notarization and verification service — enables businesses to get started in minutes to easily create an SBOM attesting to the provenance and safety of the code they use every day.

The Community Attestation Service from Codenotary, the immutability specialist that provides end-to-end tamper-proof protection for software development and workloads, is scalable to millions of transactions per second, and gives developers a way to attach a tamper-proof SBOM for development artifacts that include source code, builds, repositories, and more, plus Docker container images for their software. The SBOM is built without uploading any data to the service, instead notarizing these artifacts using the modern cryptographic verification to uniquely identify development artifacts. Each artifact retains a cryptographically strong identity stored in Codenotary’s immutable database immudb.

“More and more software companies are being asked by their customers to provide a software bill of materials and to give guarantees about its veracity,” said Dennis Zimmer, co-founder and chief technical officer, Codenotary. “We’re providing an easy way for developers to build a SBOM and let their customers and users know the provenance of their software is cryptographically and very easily verifiable, effectively enabling true Zero Trust application delivery.”

Home Assistant, an open source home automation solution with hundreds of thousands of users world-wide, is using Codenotary’s Community Attestation Service to ensure that only approved code runs at the homes that are using its software. Home Assistant puts local control and privacy first, powered by a worldwide community of tinkerers and DIY enthusiasts.

“The open source nature of Community Attestation Service, the easy integration and real time revocation are a real game changer,” said Pascal Vizeli, founder and core developer of Home Assistant. “That is how software trust and integrity should look and feel.”

“Supply chain security is part and parcel of earning the community’s trust as a platform,” said Jack Aboutboul, community manager of the leading CentOS replacement AlmaLinux. “AlmaLinux is working on integration with the Community Attestation Service to provide a secure Software Bill of Materials for the AlmaLinux OS distribution and guarantee the provenance of our builds. We are partnering with Codenotary to provide these integrity measures given the open source nature of their toolchain and their tamper-proof immudb database.”

Visit and start creating tamperproof SBOMs for your software in minutes.



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Use Case - Tamper-resistant Clinical Trials


Blockchain PoCs were unsuccessful due to complexity and lack of developers.

Still the goal of data immutability as well as client verification is a crucial. Furthermore, the system needs to be easy to use and operate (allowing backup, maintenance windows aso.).


immudb is running in different datacenters across the globe. All clinical trial information is stored in immudb either as transactions or the pdf documents as a whole.

Having that single source of truth with versioned, timestamped, and cryptographically verifiable records, enables a whole new way of transparency and trust.

Use Case - Finance


Store the source data, the decision and the rule base for financial support from governments timestamped, verifiable.

A very important functionality is the ability to compare the historic decision (based on the past rulebase) with the rulebase at a different date. Fully cryptographic verifiable Time Travel queries are required to be able to achieve that comparison.


While the source data, rulebase and the documented decision are stored in verifiable Blobs in immudb, the transaction is stored using the relational layer of immudb.

That allows the use of immudb’s time travel capabilities to retrieve verified historic data and recalculate with the most recent rulebase.

Use Case - eCommerce and NFT marketplace


No matter if it’s an eCommerce platform or NFT marketplace, the goals are similar:

  • High amount of transactions (potentially millions a second)
  • Ability to read and write multiple records within one transaction
  • prevent overwrite or updates on transactions
  • comply with regulations (PCI, GDPR, …)


immudb is typically scaled out using Hyperscaler (i. e. AWS, Google Cloud, Microsoft Azure) distributed across the Globe. Auditors are also distributed to track the verification proof over time. Additionally, the shop or marketplace applications store immudb cryptographic state information. That high level of integrity and tamper-evidence while maintaining a very high transaction speed is key for companies to chose immudb.

Use Case - IoT Sensor Data


IoT sensor data received by devices collecting environment data needs to be stored locally in a cryptographically verifiable manner until the data is transferred to a central datacenter. The data integrity needs to be verifiable at any given point in time and while in transit.


immudb runs embedded on the IoT device itself and is consistently audited by external probes. The data transfer to audit is minimal and works even with minimum bandwidth and unreliable connections.

Whenever the IoT devices are connected to a high bandwidth, the data transfer happens to a data center (large immudb deployment) and the source and destination date integrity is fully verified.

Use Case - DevOps Evidence


CI/CD and application build logs need to be stored auditable and tamper-evident.
A very high Performance is required as the system should not slow down any build process.
Scalability is key as billions of artifacts are expected within the next years.
Next to a possibility of integrity validation, data needs to be retrievable by pipeline job id or digital asset checksum.


As part of the CI/CD audit functionality, data is stored within immudb using the Key/Value functionality. Key is either the CI/CD job id (i. e. Jenkins or GitLab) or the checksum of the resulting build or container image.

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