After identifying the consensus mechanism, you need to determine the blockchain platform or project for your use case. We have already discussed some of the major platforms in this course. There are many more platforms available. blockchain technology started as open source, and most of the platforms are free to use. You need to make sure that the platform you choose is suitable for your needs. For example, if you're working towards the use case, in the hospital industry, you might require different departments for different medical practices.

You might require dental, orthopedic, and cardiology department who will run separate Ledger's for storing their records. For such scenarios, hyper ledger blockchain solution provides you with a different channels approach. You can set up a dental, orthopedic and cardiology channel. Which in turn provides you with separate Ledger's and permissions. You could also be working with some use case in which you are required to market something in minimum time. You can choose the multi chain platform as the solution for such use cases and set up a blockchain within minutes.

Depending on your requirements, you need to determine which platform is most suitable for the use case and also provide the finalized consensus mechanism. Some of the significant platforms available in the market are Bitcoin aetherium, hyper ledger coda, Corum, multi chain, big chain DB and stellar After defining all the previous steps, now we go into define our blockchain architecture.