
Sarcophagus
Sarcophagus is a decentralized dead man's switch to pass data in a censorship-resistant manner.

What is Sarcophagus?
Sarcophagus is a blockchain-enabled, general-purpose digital dead man’s switch. It is autonomous, censorship-resistant, and immutable. They rely on modern smart contracting networks like Ethereum 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. Example use cases of how Sarcophagus can be used include: (1.) Will and trust; (2.) Password Recovery; (3.) Credential Passdown; (3.) Political Activism/Whistleblowing; (4.) Password or Key Material Backup; and (5.) Emergency Communications.
Web3 dapps and developer tools related to Sarcophagus
Discover blockchain applications that are frequently used with Sarcophagus.
Developer resources from Alchemy

What is the Solidity ABI (application binary interface)?
Everything You Need to Know About Solidity's Application Binary Interface (ABI)

ERC-1271 signature replay vulnerability
On October 27th 2023, Alchemy discovered a ERC1271 contract signature replay vulnerability that affected a large number of smart contract accounts (SCA), and led to risks when interacting with several applications.

What is the Ethereum Fusaka upgrade? Dev guide to 12 EIPs
A practical breakdown of the Fusaka upgrade, explaining the 12 core EIPs and how they change data availability, cryptography, gas costs, and validator operations across the Ethereum stack.
Sarcophagus alternatives
Explore web3 competitors and apps like Sarcophagus.

