# Implementing Federated Governance in Data Mesh Architecture +
## 4 Introducing Blockchain-Powered Mesh Platform
### Advantages of Hyperledger Fabric  
In data mesh, the ledger of HLF can act as the federated repository for metadata management [36], benefiting from the blockchain's immutable, secure, and distributed characteristics. The search efficiency is enhanced through a state database that indexes the most recent asset transactions. To maintain ledger consistency and manage network updates, the platform offers various consensus mechanisms tailored to different trust levels within the network, from Byzantine Fault Tolerance for highly secure, cross-organizational exchanges to Crash Fault Tolerant algorithms for more trusted environments.  
Platform governance is managed through detailed policy mechanisms that are related to the network itself, its channels, or smart contracts. It outlines how network changes are agreed upon and implemented. This structured approach facilitates a collaborative and secure environment for managing consensus and implementing updates across the blockchain network.  
HLF uses Membership Service Providers to authenticate the identity of network components--ranging from organizations to nodes and applications [35]. This authentication framework supports secure, private communications across distinct channels and enables the private exchange of data, ensuring that sensitive information is shared only with authorized parties.  
Within the Fabric, the use of smart contracts helps to automate the enforcement of agreed-upon rules that involve specific assets, e.g., data sharing operations [37]. Smart contracts are part of a broader construct known as chaincode, which includes both the contracts and the policies governing their execution. Deployed as compact Docker or Kubernetes containers, chaincode units are the foundational software modules for transaction endorsement and policy enforcement. These policies can, for example, designate which network nodes are required to endorse or order a transaction, ensuring that execution aligns with agreed-upon standards.  
Chaincode serves a dual purpose: it not only governs transactions on the ledger transparently and interoperably but also standardizes data modifications while continuously verifying metadata integrity. This capability is especially relevant for Type II catalog requirements, where maintaining data accuracy and trustworthiness is crucial. Chaincode execution can also trigger event notifications, allowing network participants to stay informed about ledger updates and newly available information.  
HLF stands out for its developer-friendly approach to smart contract development, supporting popular programming languages like Java, Go, and JavaScript/TypeScript [38]. This flexibility contrasts with platforms like Ethereum and lowers the barrier to adoption, making it easier for developers to build and deploy chaincode on the Fabric network.  
On the other hand, it lacks the \"contract factory\" support which is present in the Ethereum ecosystem [34]. By introducing such functionality, we could significantly enhance the capabilities of the system. For instance, by utilizing such a factory we could use the smart contract template and automatically create the computable data contract instances.