This is really interesting. QMC'S QDX Ledger uses

This is really interesting. QMC'S QDX Ledger uses DAML and Hyperledger Sawtooth as a platform. Evidently it's a great way to make smart contracts.

Edit added:
In simple terms. Take your DAML application and deploy it on a Sawtooth network which is managed by BTP Sextant thus making your work easy.

https://blog.knoldus.com/deploying-daml-smart...-sawtooth/