> For the complete documentation index, see [llms.txt](https://docs.catalyx.solutions/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.catalyx.solutions/catalyx-blockchain-manager/hyperledger-fabric/version-2.4/getting-started/commit-a-chaincode-to-the-channel.md).

# Commit a Chaincode to the Channel

Chaincode is the smart contract of Hyperledger Fabric that handles the business logic of a particular application. A smart contract programmatically accesses two distinct pieces of the ledger — a blockchain that immutably records the history of all transactions, and a world state that holds a cache of the current value of these states.

The Catalyst Blockchain Manager Hyperledger Fabric service supports Hyperledger Fabric v2.0 capabilities with the following [chaincode lifecycle](https://hyperledger-fabric.readthedocs.io/en/release-2.2/chaincode_lifecycle.html#fabric-chaincode-lifecycle):

<figure><img src="/files/1ZHTQiix552IFgEZuQvj" alt=""><figcaption></figcaption></figure>

{% stepper %}
{% step %}

#### Add a Chaincode

The current version of Catalyst Blockchain Manager supports external chaincodes. Organizations do not need to package the chaincode — they just need to create a Docker image and provide a link to the Docker repository.

See [Add a Chaincode](file:///7571772/chaincode-management/chaincode.md#add-chaincode).
{% endstep %}

{% step %}

#### Install the Chaincode on Your Peers

Every organization that will use the chaincode to endorse a transaction or query the ledger needs to complete this step.

See [Install the Chaincode](file:///7571772/chaincode-management/chaincode.md#install-the-chaincode).
{% endstep %}

{% step %}

#### Approve a Chaincode Definition for Your Organization

Every organization that will use the chaincode needs to complete this step. The chaincode definition needs to be approved by a sufficient number of organizations with endorser rights to satisfy the channel's policy before the chaincode can be started on the channel.

See [Approve a Chaincode](file:///7571772/chaincode-management/chaincode.md#approve-a-chaincode).
{% endstep %}

{% step %}

#### Commit the Chaincode Definition

Any organization can commit a chaincode if all necessary approvals were done.

See [Commit a Chaincode](file:///7571772/chaincode-management/chaincode.md#commit-a-chaincode) and [Chaincode Lifecycle](file:///7571772/chaincode-management/chaincode.md#chaincodes-lifecycle) for full details.
{% endstep %}
{% endstepper %}


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