Dear community. immudb has just been released as v0.6.1

Release v0.6.1 fixes some important bugs and has many improvements – we recommend updating to it


[v0.6.1] – 2020-06-09

Bug Fixes

  • disallow running immuadmin backup with current directory as source
  • immuadmin dump hangs indefinitely if token is invalid
  • #283, immudb crash on dump of empty db
  • fix corruption checker crash during immudb shoutdown
  • choose correct config for immudb, immugw installation
  • update env vars in README and Docker files (#297)
  • cmd/immuadmin: inform user that manual server restart may be needed after interrupted backup
  • cmd/immuadmin: validate backup dir before asking password
  • cmd/immuclient: add version sub-command to immuclient interractive mode
  • cmd/immuclient: nil pointer when audit-mode used with immudb running as daemon
  • cmd/immutest: add new line at the end of output message
  • pkg/ring: return nil on inconsistent access to buffer rings elements
  • pkg/store: fix visualization of non frozen nodes inside print tree command
  • pkg/store/treestore: fix overwriting on non frozen nodes


  • add license to tests (#288)
  • update statement about traditional DBs in README
  • remove immugw configs from immudb config file #302
  • cmd/immuadmin/command: improve visualization ui in merkle tree print command
  • cmd/immuadmin/command/service: syntax error, build fails on windows
  • cmd/immuclient/audit: code cleanup and renaming
  • pkg/store/treestore: improve cache invalidation

Code Refactoring

  • handling of failed dump


  • allow the password of immugw auditor to be base64 encoded in the config file (#296)
  • add auth support to immutest CLI
  • add server-side logout (#286)
  • cmd/helper: add functionalities to print colored output
  • cmd/immuadmin: add print tree command
  • cmd/immutest: add env var for tokenfile
  • pkg: add print tree functionality


Docker image

Immudb Binaries

v0.6.1. download

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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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