Oracle Blockchain Platform is based on the Hyperledger Fabric open source project from the Linux Foundation. Starting with version 21.4.1, a new underlying version, or platform version, of Hyperledger Fabric is available. Oracle Blockchain Platform now supports Hyperledger Fabric v2.2.4 as well as existing instances of Hyperledger Fabric v1.4.7.

Typically, for new instances, you'll run the latest platform version available. Oracle Blockchain Platform supports and enhances the following new functions of the Hyperledger Fabric v2.2.4 platform:

• Decentralized governance of chaincodes. A new life cycle for installing chaincode on peers and starting it on a channel enables new decentralized modes of collaboration and consensus. Multiple organizations can agree on chaincode parameters, including the chaincode endorsement policy, before a chaincode is deployed on the channel. These functions are implemented in the new quick deployment and advanced deployment wizards, as well as in the REST API. To learn more about deploying chaincodes on Hyperledger Fabric v2.2.4, see Deploy and Manage Chaincodes on Hyperledger Fabric 2.2.4. For more information about the new life cycle, see Fabric chaincode lifecycle in the Hyperledger Fabric v2.2.4 documentation.
• Private data collection enhancements. You can specify an endorsement policy to control access to a private data collection. Also, every chaincode has an implicit private data collection specific to the organization. For more information, see Implicit private data collections in the Private data section of the Hyperledger Fabric v2.2.4 documentation.

Starting with version 22.2.1 of Oracle Blockchain Platform, you can upgrade existing instances that are running on Hyperledger Fabric v1.4.7 to use Hyperledger Fabric v2.2.4. For more information, see Upgrade an Instance.

For more information about Hyperledger Fabric v2.2.4, see What’s new in Hyperledger Fabric v2.x.

Oracle Blockchain Platform is currently available on data regions in North America, Europe, and Asia-Pacific (APAC). Thereafter, Oracle Blockchain Platform may expand to other regions.

For the latest information on availability in regions, see Data Regions for Platform and Infrastructure Services.

For information about regions hosting Oracle Cloud Infrastructure, see Regions and Availability Domains.

Oracle Blockchain Platform has various default limits. Whenever you create an Oracle Blockchain Platform instance, the system ensures that your request is within the bounds of your limit. The limit that applies to you doesn't depend on which edition and size you subscribe to (Standard Edition or Enterprise Edition).

You can use quotas to determine how other users allocate Oracle Blockchain Platform resources across compartments in Oracle Cloud Infrastructure. Whenever you create an Oracle Blockchain Platform instance or scale up, the system ensures that your request is within the bounds of the quota for that compartment.

Actions that you perform on Oracle Blockchain Platform instances emit events.

{
        "cloudEventsVersion": "0.1",
        "contentType": "application/json",
        "source": "blockchain",
        "eventID": "<unique_ID>",
        "eventType": "com.oraclecloud.blockchain.createplatforminstance.begin",
        "eventTypeVersion": "<version>",
        "eventTime": "2020-06-14T00:53:04.126Z",
        "data": {
            "additionalDetails": {},
            "availabilityDomain": "<availability_domain>",
            "compartmentId": "ocid1.compartment.oc1..<unique_ID>",
            "compartmentName": "my_compartment",
            "freeformTags": {},
            "resourceId": "ocid1.blockchaininstance.oc1..<unique_ID>",
            "resourceName": "my_blockchain_cloud"
        },
        "extensions": {
            "compartmentId": "ocid1.compartment.oc1..<unique_ID>"
        }