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Corda is an open source blockchain project, designed for business from the start. Only Corda allows you to build interoperable blockchain networks that transact in strict privacy. Corda's smart contract technology allows businesses to transact directly, with value.
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* CORDA-2089 - network parameters tags - part Data structures changes, storage and notarisation. Tag transactions with network parameters hash that was in force when tx was created. Add component group on all core transactions and resolved parameters on full transactions. The hash should be always visible on the filtered versions of transactions. Add notarisation check that the parameters are current. Implement network parameters storage on services for resolution. This is only part of the work, next PR will include changes to ResolveTransactionsFlow to make sure that parameters in the transaction graph are ordered (this is to prevent the downgrade attack, when the malicious notary and participants sign transaction that shouldn't be notarised otherwise). Probably on network services side we need the default parameters endpoint for the transactions that were created before this change - for now it's default to the current ones. * Make parameters storage agnostic to cert hierarchy Test fixes * Address most PR comments * Fixes after rebase * Fixes. Add epoch column to parameters storage. * Address part of review comments * Some more comments * Hopefully fixing what I broke doing rebse * Address Kostas comments * Further fixes * Save all parameters from updates to storage * Fix integration test * Address comments * Fixes after rebase * Fix test * Fixes * Add wrapper for filtering around parameters hash * API stability fixes * Add NetworkParametersStorageInternal * Rename |
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Corda
Corda is an open source blockchain project, designed for business from the start. Only Corda allows you to build interoperable blockchain networks that transact in strict privacy. Corda's smart contract technology allows businesses to transact directly, with value.
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
- Project Website
- Mailing List
- Documentation
- Stack Overflow Tag
- Slack Channel
- Meetups
- Training Courses
Contributing
We welcome contributions to Corda! Please see our CONTRIBUTING.md.
License
Acknowledgements
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