Sarcophagus is a blockchain-enabled, general-purpose digital dead man’s switch. It is autonomous, censorship-resistant, and immutable. We rely on modern smart contracting networks like Ethereum or Tezos as well as Arweave’s permanent file storage network; files you place in a sarcophagus are only unlocked in the event of you failing to attest to the contract. Historically, dead man’s switches have been used in heavy machinery to ensure the operator is paying attention and is present at their post. However, there are many other examples of physical-use cases such as suicide bomber vests and even Russia’s Strangelovian Dead Hand nuclear program. A dead man’s switch is a mechanism (digital or physical) that triggers when the user fails to perform an action. Bitcoin gave us the base of blockchain tech, it proved to us that making computers do physical things to supplant human trust (or violence) is not only sustainable but approaches antifragility. Ethereum gave us the ability to execute code on a 100% uptime, decentralized and immutable computer. Arweave gives us the ability to economically store and retrieve files from a separate, immutable, and permanent file system. Only the combination of multiple groundbreaking innovations in the past 10 years has made sarcophagus possible. Leaving Secrets to The Future Our goal with this is to make secret recovery easier and more intuitive. However, we know that we can’t simply start offering password recovery with a centralized server (ZK or otherwise); that would be going backward. We have to conceptualize the idea of secrets, how they affect us as humans, the value they hold, and the nature of the timeline concerning their storage and recovery.