Description
Sarcophagus is an autonomous, incentivized dead man's switch dApp built on Ethereum, Arweave, and BASE that provides a trustless way to ensure your digital assets and sensitive data are passed on to your chosen beneficiaries.
How It Works
Users create an encrypted bundle of data (a sarcophagus) containing critical information such as private keys, seed phrases, wallet access details, passwords, or documents. This data is encrypted and stored permanently on Arweave, a decentralized storage network. The user must periodically embalm (re-encrypt and check in) the sarcophagus to keep it sealed. If they fail to do so within a predefined period, designated recipients known as archaeologists can decrypt and release the data to the user's named beneficiaries.
Key Features
- Self-Sovereign Inheritance — No third-party custody. You maintain full control of your data and assets until you stop checking in.
- Decentralized Storage — Data is encrypted and stored on Arweave, ensuring permanence and censorship resistance.
- Incentivized Network — Archaeologists are incentivized with the SARCO token to monitor sarcophagi and execute releases when conditions are met.
- Customizable Timelines — Set your own check-in frequency and release conditions.
- Non-Custodial — Your private keys and sensitive data are never held by any intermediary; only encrypted fragments are stored on-chain and on Arweave.
Use Cases
- Crypto Wallet Inheritance — Ensure your family or trusted beneficiaries can access your crypto assets if something happens to you.
- Digital Will — Securely pass on account passwords, email accounts, and other sensitive digital information.
- Business Continuity — Companies can use Sarcophagus to ensure critical access credentials are recoverable by trusted team members after prolonged absence.
Highlights
Pros
- Self-sovereign design allows pseudonymous users to plan digital inheritance without revealing their real-world identity.
- Economically incentivized archaeologist network with bonded SARCO tokens that can be slashed for early or late decryption, aligning incentives with honest behavior.
- Non-custodial inheritance — users maintain full control of data and private keys with no intermediary holding their sensitive information.
- Data stored permanently on Arweave ensures censorship resistance, immutability, and no reliance on centralized servers.
- Versatile across multiple use cases including crypto will & trust, password recovery, credential handover, whistleblowing, and emergency communications.
- Fully open-source smart contracts and DAO governance provide transparency and community-driven protocol evolution.
Cons
- Protocol is still in early beta stage with limited adoption, raising questions about long-term network reliability and archaeologist retention.
- High technical complexity — users must manage crypto wallets, gas fees, SARCO tokens, and select archaeologists, which limits accessibility for mainstream users.
- No automated on-chain asset transfer — currently only encrypted data files are passed; executing signed transactions for actual asset inheritance is planned for a future version.
- Dependence on archaeologist availability — if no bonded archaeologist is online at resurrection time, the sarcophagus cannot be decrypted; v2 plans for redundancy confirm this as a current limitation.
- Recipients must already own a crypto wallet and understand how to use their private keys to decrypt the inner data layer, creating a barrier for non-crypto-native beneficiaries.
- Small user base and low transaction volume — WIRED reports the service is not widely used and generates only modest revenue from payment cuts.