# Social hierarchical architecture

The hierarchical architecture of Fibonacci supports compositional operations, interface management and unlicensed management authority, providing developers with native components that can be iteratively developed and downward compatible. According to the principles of independence, low coupling, high cohesion and public modules, it is divided into several major modules. Fibonacci includes modules such as Cosmos Social, NFT, and DAO. The functions of the implemented modules are as follows:

<br>

* Social module&#x20;

• Create topic (social/create)&#x20;

• Append topic (social/append)&#x20;

• Reply to topic (social/reply)

• Follow topic (social/follow)&#x20;

• Send message (social/sendMsg)&#x20;

• Send encrypted message (social/sendEncryptionMsg)&#x20;

<br>

* NFT module&#x20;

• Create NFT (api/createNFT)&#x20;

• Transfer NFT ownership (api/TransferNFT)&#x20;

• Query NFT ownership (api/ownerOfNFT)

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