I am trying to develop an use case in which a user has its funds on a multisig 3-2 (one key staying with him, another with my app and another one with a type of oracle that can attest if some conditions are met). These conditions would be retrieved with some type of script that can consult API's with BTC price, etc. Would that be possible to do in the base layer of bitcoin? Can anybody point to me some articles that explore this question?