Quote from: nc50lc on March 19, 2025, 05:13:06 AM

OP_CLTV is another alternative for that scenario because it has the necessary feature to allow your key to spend the locked output before the locktime and allow another key [of the inheritor(s)] to spend it only after the locktime.

Example script:

Code:

IF
   <Your Private key's Public key pair> CHECKSIG
   ELSE
   <Your Preferred inheritance date> CHECKLOCKTIMEVERIFY DROP
   <Inheritor's Public key> CHECKSIG
   ENDIF

The problem is I'm not aware of any user-friendly implementation of that script in famous bitcoin wallets.
One option I can think of is to utilize Bitcoin Core's "sh" or "wsh" descriptor and "miniscript" to import it to a watch-only wallet.

Touching descriptors and miniscript to make a DIY dead man's switch is really dangerous if you don't know what you're doing. It can cause a total loss of funds in dramatic Wile E. Coyote fashion.

I'm not saying that to scare anyone, but it is much better to simply use a third party guarrantor/trustee. I wouldn't even trust random companies for something this sensitive.