At present, we support a single version of RPC API on a node. I propose we version our RPC API such that we can roll out substantial API changes in a non-breaking way.

Specifically, our current RPC API (JSON, HTTP, and Websocket) is available at the root of the node, e.g. /status, /block, etc.
We need to

• Make our current RPC API is also available under a /v1 sub-path, e.g. /v1/status, /v1/block, etc.
  • JSON
  • Websocket
  • HTTP
• Publish the extended API

With this change we can easily roll out new RPC API versions with "breaking" changes as compared to previous versions, e.g. under a /v2, /v3, etc. path

Eventually we would be able to deprecate the APIs available at the root, then we'd deprecate the /v1 API, etc. but this process would be progressive and consultative with integrators.