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Use more specific chaincode package versions
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This demonstrates good practice in restricting the chaincode package
versions to those applicable for the specific Fabric (major/minor)
version targeted for deployment.

Also some corrections to the repository README. Particularly referring
to other branches for samples targeted at earlier Fabric versions, since
samples in the main branch may exploit features not available in older
Fabric releases, which can cause confusion for end users.

Signed-off-by: Mark S. Lewis <Mark.S.Lewis@outlook.com>
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bestbeforetoday committed Jun 13, 2024
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20 changes: 13 additions & 7 deletions README.md
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# Hyperledger Fabric Samples

[![Build Status](https://dev.azure.com/Hyperledger/Fabric-Samples/_apis/build/status/Fabric-Samples?branchName=main)](https://dev.azure.com/Hyperledger/Fabric-Samples/_build/latest?definitionId=28&branchName=main)

You can use Fabric samples to get started working with Hyperledger Fabric, explore important Fabric features, and learn how to build applications that can interact with blockchain networks using the Fabric SDKs. To learn more about Hyperledger Fabric, visit the [Fabric documentation](https://hyperledger-fabric.readthedocs.io/en/latest).

Note that this branch contains samples for the latest Fabric release. For older Fabric versions, refer to the corresponding branches:

- [release-2.2](https://github.com/hyperledger/fabric-samples/tree/release-2.2)
- [release-1.4](https://github.com/hyperledger/fabric-samples/tree/release-1.4)

## Getting started with the Fabric samples

To use the Fabric samples, you need to download the Fabric Docker images and the Fabric CLI tools. First, make sure that you have installed all of the [Fabric prerequisites](https://hyperledger-fabric.readthedocs.io/en/latest/prereqs.html). You can then follow the instructions to [Install the Fabric Samples, Binaries, and Docker Images](https://hyperledger-fabric.readthedocs.io/en/latest/install.html) in the Fabric documentation. In addition to downloading the Fabric images and tool binaries, the Fabric samples will also be cloned to your local machine.
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| **Smart Contract** | **Description** | **Tutorial** | **Smart contract languages** | **Application languages** |
| -----------|------------------------------|----------|---------|---------|
| [Basic](asset-transfer-basic) | The Basic sample smart contract that allows you to create and transfer an asset by putting data on the ledger and retrieving it. This sample is recommended for new Fabric users. | [Writing your first application](https://hyperledger-fabric.readthedocs.io/en/latest/write_first_app.html) | Go, JavaScript, TypeScript, Java | Go, JavaScript, TypeScript, Java |
| [Basic](asset-transfer-basic) | The Basic sample smart contract that allows you to create and transfer an asset by putting data on the ledger and retrieving it. This sample is recommended for new Fabric users. | [Writing your first application](https://hyperledger-fabric.readthedocs.io/en/latest/write_first_app.html) | Go, JavaScript, TypeScript, Java | Go, TypeScript, Java |
| [Ledger queries](asset-transfer-ledger-queries) | The ledger queries sample demonstrates range queries and transaction updates using range queries (applicable for both LevelDB and CouchDB state databases), and how to deploy an index with your chaincode to support JSON queries (applicable for CouchDB state database only). | [Using CouchDB](https://hyperledger-fabric.readthedocs.io/en/latest/couchdb_tutorial.html) | Go, JavaScript | Java, JavaScript |
| [Private data](asset-transfer-private-data) | This sample demonstrates the use of private data collections, how to manage private data collections with the chaincode lifecycle, and how the private data hash can be used to verify private data on the ledger. It also demonstrates how to control asset updates and transfers using client-based ownership and access control. | [Using Private Data](https://hyperledger-fabric.readthedocs.io/en/latest/private_data_tutorial.html) | Go, Java | JavaScript |
| [Private data](asset-transfer-private-data) | This sample demonstrates the use of private data collections, how to manage private data collections with the chaincode lifecycle, and how the private data hash can be used to verify private data on the ledger. It also demonstrates how to control asset updates and transfers using client-based ownership and access control. | [Using Private Data](https://hyperledger-fabric.readthedocs.io/en/latest/private_data_tutorial.html) | Go, TypeScript, Java | TypeScript |
| [State-Based Endorsement](asset-transfer-sbe) | This sample demonstrates how to override the chaincode-level endorsement policy to set endorsement policies at the key-level (data/asset level). | [Using State-based endorsement](https://github.com/hyperledger/fabric-samples/tree/main/asset-transfer-sbe) | Java, TypeScript | JavaScript |
| [Secured agreement](asset-transfer-secured-agreement) | Smart contract that uses implicit private data collections, state-based endorsement, and organization-based ownership and access control to keep data private and securely transfer an asset with the consent of both the current owner and buyer. | [Secured asset transfer](https://hyperledger-fabric.readthedocs.io/en/latest/secured_asset_transfer/secured_private_asset_transfer_tutorial.html) | Go | JavaScript |
| [Events](asset-transfer-events) | The events sample demonstrates how smart contracts can emit events that are read by the applications interacting with the network. | [README](asset-transfer-events/README.md) | JavaScript, Java | JavaScript |
| [Attribute-based access control](asset-transfer-abac) | Demonstrates the use of attribute and identity based access control using a simple asset transfer scenario | [README](asset-transfer-abac/README.md) | Go | None |
| [Secured agreement](asset-transfer-secured-agreement) | Smart contract that uses implicit private data collections, state-based endorsement, and organization-based ownership and access control to keep data private and securely transfer an asset with the consent of both the current owner and buyer. | [Secured asset transfer](https://hyperledger-fabric.readthedocs.io/en/latest/secured_asset_transfer/secured_private_asset_transfer_tutorial.html) | Go | TypeScript |
| [Events](asset-transfer-events) | The events sample demonstrates how smart contracts can emit events that are read by the applications interacting with the network. | [README](asset-transfer-events/README.md) | Go, JavaScript, Java | Go, TypeScript, Java |
| [Attribute-based access control](asset-transfer-abac) | Demonstrates the use of attribute and identity based access control using a simple asset transfer scenario | [README](asset-transfer-abac/README.md) | Go | _None_ |

## Full stack asset transfer guide

The [full stack asset transfer guide](full-stack-asset-transfer-guide#readme) workshop demonstrates how a generic asset transfer solution for Hyperledger Fabric can be developed and deployed. This covers chaincode development, client application development, and deployment to a production-like environment.

## Additional samples

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