Feature Request
Is your feature request related to a problem? Please describe.
As a technical user / developer, I want to be able to see if the access key added to the account is actually controlled by MPC (chain signatures) and as such by some other smart contract rather than some off-chain key.
Describe the solution you'd like
It seems that it will require indexing all the public keys derived through MPC via sign function calls to track which account can control the key. And then on the page of access keys the MPC-controlled keys must be marked as such.
See https://docs.near.org/tutorials/controlling-near-accounts/introduction for more details.