Since this is HN, what are the legal, game theoretic, and technical means to ensure that your will is executed to the letter? Bind the executor to a contract b

Since this is HN, what are the legal, game theoretic, and technical means to ensure that your will is executed to the letter? Bind the executor to a contract before hand? Perhaps have two additional watchdog entities setup to sue if the executor disobeys? Have a smart contract oracle escrow on the blockchain to automatically pay out to the law firm for suit if the number of ISBNs associated with your name increases?