Novel that your thinking about implementing a better consensus arbiter for carnal relations, especially in this era, using a censorship-resistant ledger. The ultimate problem will be the concatenation of ques which'll be necessary to log onto the ledger. Do you propose using IOTA's protocol through Google Home, Siri, Alexa, DIY assistant to ref the consent verbally? Let say that both parties have to initiate the assistant into listening mode, then after that the assistant will engage in a series of questions, to off-set ambiguity from the two parties. In the event of a power failure or wi-fi failure, the contract is completely scrapped. Outside of that, it records all acts accordingly based upon all verbal confirmations. Both parties can have saftey words, but must provide 2-factor authentication (in the event of accident). Outside of that if the party doesn't respond to the assistant queries, it's logged as a spectrum of consent/non-consent. This at least provides a record of varience if things become legal/criminal.