Oracle Blockchain Platform Digital Assets Edition is an extension of Oracle Blockchain Platform that provides pre-built domain-specific content such as chaincodes and wrapper APIs for use in scenarios such as central bank digital currency (CBDC) and digital bond marketplaces as well as generic token frameworks.

With its unique focus on digital asset tokenization and lifecycle management, it simplifies complex processes such as compliance, asset transfers, and ownership verification while ensuring real-time tracking and auditability. It reduces entry barriers for users developing applications that work with digital assets.

See: Oracle Blockchain Platform Digital Assets Edition

See: Build Chaincodes with Low-Code Blockchain App Builder

The atomicTransactions REST API now supports transferring non-fungible tokens (NFTs) from Oracle Blockchain Platform to an Ethereum or Polygon network.

See: Ethereum Interoperability and Atomic Transactions REST Endpoints

See: Run Solidity Smart Contracts with EVM on Oracle Blockchain Platform and Configuring the Fab3 Proxy

See: Build Chaincodes with Low-Code Blockchain App Builder

See: Build Chaincodes with Low-Code Blockchain App Builder

You can now run Ethereum transactions as part of an atomic transaction workflow by using the atomicTransactions REST API, where the combined transactions are either all committed or all rolled back.

See: Make Atomic Updates Across Chaincodes and Channels, Ethereum Interoperability, and Atomic Transactions REST Endpoints

You can use the web3 library and the fab3 proxy to deploy and interact with smart contracts on Ethereum Virtual Machine (EVM) chaincode that is deployed on Oracle Blockchain Platform peer nodes.

See: Configuring the Fab3 Proxy

You can now upgrade the version of Oracle Blockchain Platform that is running on instances that are based on Hyperledger Fabric v2.2.4.

See: Upgrade an Instance

You can run and analyze rich queries on the state database for a specified chaincode and channel in the console's Channels tab by using the More Actions menu.

See: Rich Queries in the Console

To free up disk space, you can delete obsolete or unused chaincode packages by using the REST API or the console UI.

See: Delete a Chaincode and Delete Installed Chaincode Package

In addition to mutual TLS, REST proxy event subscription callbacks now support invoking callback endpoints that are secured with OAuth 2.0 authorization.

See: Subscribe to an Event

You can now use the REST API to combine a group of transactions across multiple channels into a single (atomic) transaction. Atomic transactions use the two-phase commit protocol, so that the combined transactions are either all committed or all rolled back. You can use this function to work around Hyperledger Fabric limitations related to atomic cross-channel updates.

See: Use Atomic Transactions and Atomic Transactions REST Endpoints

Oracle Blockchain Platform now supports the X/Open group XA (eXtended Architecture) standard, which specifies the interface between a global transaction manager and local transactional resource managers. The XA standard is based on a two-phase commit protocol. Oracle Blockchain Platform now provides a Java library that can be used as an XA resource manager, allowing global transaction managers to coordinate and sequence a series of atomic operations that can include Oracle Blockchain Platform blockchain transactions alongside databases, queueing systems, and other XA-capable resources.

See: Use the XA Java Library

See: Using Blockchain App Builder

You can now upgrade existing instances of Oracle Blockchain Platform that are based on Hyperledger Fabric v1.4.7 to Hyperledger Fabric v2.2.4. You can upgrade instances that are part of a network that includes a single organization. To upgrade the platform version of a network with multiple organizations, contact Oracle support.

For more information, see: Upgrade the Platform Version of an Instance.

Hyperledger Fabric v2.2.4 uses a new chaincode life cycle and a new model that separates chaincode packages from chaincode definitions. You might need to update chaincode and client applications to work with the new version of Hyperledger Fabric. To learn more about the impact of a new version of Hyperledger Fabric on existing applications, see Updating Applications for a New Platform Version.

Oracle Blockchain Platform now supports more reliable delivery for subscribed events. If a callback fails, it is retried based on an exponential backoff policy. When you subscribe to chaincode events, you can specify the maximum number of times that a callback will be retried after a communication failure.

See: Subscribe to an Event in the REST API documentation.

See: Using Blockchain App Builder

• Node.js SDK v2.2.9
• Java SDK v2.2.2
• Go SDK v1.0.0

For more information, see: Use the Hyperledger Fabric SDKs to Develop Applications

See: Deploy and Manage Chaincodes on Hyperledger Fabric 2.2.4

You can specify an endorsement policy to control access to a private data collection. You can also automatically prevent members of organizations that are not part of the collection from reading or writing private data.

See: Add Private Data Collections

When a new release of Oracle Blockchain Platform is available, you can now use the Oracle Cloud Infrastructure console or the REST APIs to upgrade an instance at the time you choose.

See: Upgrade an Instance