actually some time ago there was a crypto project that almost solved this problem. but the project stalled. The project has a blockchain-based storage system, and will send the key that we store to the account of someone we trust after our account is inactive for 30 days or more (according to our settings)
it is
https://inftech.io/ you can read it here.
stalled or stop ? why whats the matter why they stop or delayed it , we need a project like this because this is verry useful than compare to those projects that we dont really need to but it was sad that they are the ones that exist longer or maybe the project was stalled because they havent got more demand due to there are already simillar projects on the past earlier than them . devs will think of this right at the start because of how useful it was .