Sphereon Alfresco Blockchain integration

The Sphereon Alfresco Blockchain integration enables Alfresco users to register proof-of-existence of files on a blockchain. Because by nature, Blockchains are immutable thus proof-of-existence cannot be tampered with and it is therefore a reliable way to prove that files within Alfresco have existed latest at the date and time of registration.

This page links to the source code and explains the setup of the Sphereon blockchain Aspect in Alfresco.

Source code

Backend: Sphereon-Opensource/alfresco-blockchain-agent

Front-end: Coming soon

Alfresco configuration

Model & site setup

• Open Alfresco share (http://alfresco.demo/share if Alfresco is available at http://alfresco.demo)
• Navigate to Admin tools → Model manager
• Import model: sphereon-alfresco-blockchain-model.zip
• Create new site (Share → Sites in top menu bar → Create Site)
  • Collaborator Site
  • Private
• Add blockchain-agent user as a collaborator on the site
• Add blockchain aspect to site
  • Sites → Open newly created site → Document library (Top right) → Documents (Top left of folder view) → Manage aspects (Right sidemenu)
  • In the left pane, click (plus) on Blockchain Registration State and apply changes
• Add a rule to automatically apply the blockchain aspect to files and folders
  • Sites → Open newly created site → Document library (Top right) → Documents (Top left of folder view) → Manage rules (Right sidemenu)
  • Create rules (link without text-underline on hover in left section)
  • Name: Apply Blockchain Aspect
  • When: Items are created or enter this folder
  • Criteria: All items
  • Perform action: Apply Aspect, “Blockchain Registration State”
  • Make sure “Run in background” and “Apply to subfolders” are selected
• To optionally make folders sign documents automatically, add a rule
  • Rule: New file → Set bc:BlockchainRegistrationState to PENDING_REGISTRATION