One of the great hurdles that Fusion still faces, is a greater transparancy around DCRM. Though the technology is fully available and opensourced, how FUSION's own DCRM setup runs is shrouded in some level of mystery. DCRM-nodes are not the same as Fusion nodes, even though there is hope that Fusion nodes will be DCRM nodes at some point in the future.
These things are known about DCRM nodes.
1. They are of similar nature to the sMPC nodes run by Multichain (formerly Anyswap) which can be found at https://anyswap.net/. Like with Fusion nodes, anyone can set up their own sMPC-node and become part of this network. But it's a little complex and without any known reward. Official instructions can be found at https://github.com/anyswap/Anyswap-MPCNode in addition to this Iruwen has written a more detailed guide here https://iruwen.medium.com/dcrm-node-smpc-wallet-setup-f4ba208f042b. Anyone seeking help with setting up a node like this could find it in the SMPC-wallet TG https://t.me/smpcwallet or the AnySwap Dev TG https://t.me/Anyswapdev.
2. The role of DCRM nodes is to hold custody over assets while they are bridged cross-chain. With multiple nodes run by multiple people, no one person is in control. Read more details on how it functions exactly here.
3. The Fusion DCRM nodes are run by an alliance known as the DCRM alliance. Original alliance members include Totle, Realio, Fantom, KIT.edu and SolidX. It's been hinted the alliance has expanded/changed since the beginning. So, exactly how it looks currently is unknown. Possibly it's kept in a very tight loop in order to improve security.
4. Chainge Finance is the company primarily using FUSION DCRM setup.