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* CORDA-986 and CORDA-985 CompositeKey and Signature verification performance fixes (#2467) * CORDA-696: Create separate transaction types for contract upgrade transactions. Add rationale around upgrade transactions Move contract upgrade transaction resolution logic into internal until it's stabilised. Throw a better exception when contract attachment not found Default legacy contract constraint to always accepting - needs to be changed to whitelist constraint before merging Introduce a new upgraded contract interface that allows specifying the legacy constraint. Remove StateLoader, make all tx resolution functions take in ServicesForResolution Contract upgrade transactions can handle whitelist by zone constraints When creating a contract upgrade transaction, make sure the attachment of the old cordapp gets attached when using hash constraints. Attachment lookup for a given contract class name only scans currently loaded cordapps, and we don't load old versions of cordapps.
Corda
Corda is a decentralised database system in which nodes trust each other as little as possible.
Features
- Smart contracts that can be written in Java and other JVM languages
- Flow framework to manage communication and negotiation between participants
- Peer-to-peer network of nodes
- "Notary" infrastructure to validate uniqueness and sequencing of transactions without global broadcast
- Enables the development and deployment of distributed apps called CorDapps
- Written in Kotlin, targeting the JVM
Getting started
- Read the Getting Started documentation
- Run the Example CorDapp
- Read about Corda's Key Concepts
- Follow the Hello, World! tutorial
Useful links
Contributing
Please read here.
License
Acknowledgements
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