github.com/darrenli6/fabric-sdk-example@v0.0.0-20220109053535-94b13b56df8c/docs/source/chaincode.rst (about)

     1  Chaincode Tutorials
     2  ===================
     3  
     4  What is Chaincode?
     5  ------------------
     6  
     7  Chaincode is a program, written in `Go <https://golang.org>`_, and eventually
     8  in other programming languages such as Java, that implements a
     9  prescribed interface. Chaincode runs in a secured Docker container isolated from
    10  the endorsing peer process. Chaincode initializes and manages ledger state
    11  through transactions submitted by applications.
    12  
    13  A chaincode typically handles business logic agreed to by members of the
    14  network, so it may be considered as a "smart contract". State created by a
    15  chaincode is scoped exclusively to that chaincode and can't be accessed
    16  directly by another chaincode. However, within the same network, given
    17  the appropriate permission a chaincode may invoke another chaincode to
    18  access its state.
    19  
    20  Two Personas
    21  ------------
    22  
    23  We offer two different perspectives on chaincode. One, from the perspective of
    24  an application developer developing a blockchain application/solution
    25  entitled :doc:`chaincode4ade`, and the other, :doc:`chaincode4noah` oriented
    26  to the blockchain network operator who is responsible for managing a blockchain
    27  network, and who would leverage the Hyperledger Fabric API to install,
    28  instantiate, and upgrade chaincode, but would likely not be involved in the
    29  development of a chaincode application.
    30  
    31  .. Licensed under Creative Commons Attribution 4.0 International License
    32     https://creativecommons.org/licenses/by/4.0/