RE: What Would Happen To Your Steem, Bitcoin and Alts If You Died Today????

Hi. My first post here on Steemit. 😁
I have BTC and just recently put a little into Ethereum. The latter is where I hope the solution is.
A possible application is in the actioning of certain tasks as specified within a 'contract' Last will and Testament. Paying out to recipients upon the meeting of certain criteria.
It would require of course that these recipients would need to have a working receiving wallet application.
I don't remember where I came across the idea or even know if it is definitely something that could be watertight but I do know that Ethereum contracts are guaranteed.
Anyone out there have any links, ref or further knowledge or thoughts?