Anyone who would think of using it you need to consider at least 2 threat models.
1) The key castodian can decrypt your Information either willingly or through coercion.
If you use the same key to sign and encrypt the message or if you do not sign it then they may also be able to impersonate you.
2) A third party who would gain from the information being disclosed can force its release through a denial attack.
Never use a deadman switch as a bargaining or as an insurance policy if you do not intend the information to be released to the public and if you are not comfortable with the information being released the moment the switch is set up rather than when it would be activated.
The only manner in which this or any simmilar setup does not expose you to additional risk is if you only use it to ensure the release of said information in a timely manner and there is no adversarial motive to release it sooner.
1) The key castodian can decrypt your Information either willingly or through coercion. If you use the same key to sign and encrypt the message or if you do not sign it then they may also be able to impersonate you.
2) A third party who would gain from the information being disclosed can force its release through a denial attack.
Never use a deadman switch as a bargaining or as an insurance policy if you do not intend the information to be released to the public and if you are not comfortable with the information being released the moment the switch is set up rather than when it would be activated.
The only manner in which this or any simmilar setup does not expose you to additional risk is if you only use it to ensure the release of said information in a timely manner and there is no adversarial motive to release it sooner.
@the creators you might want to look at the possibility of implementing https://en.m.wikipedia.org/wiki/Chaffing_and_winnowing over a blockchain.