Securing Legal Documents on the Blockchain: DocAccord's Hackathon Project
This past weekend we participated in Cartesi's incubator hackathon. Our goal was to develop a solution for securely managing legal documents and contracts using blockchain technology.
The problem DocAccord aimed to solve is that currently, executing and storing contracts and other legal documents lacks transparency, security and an immutable record. Documents can get lost, altered or forged. There is no easy way to verify the authenticity or audit the history of changes. Transactions require expensive intermediaries and are paper-based, making them inefficient.

At the hackathon, DocAccord built and demonstrated a prototype application addressing these issues. Powered by the Cartesi blockchain, the solution allows:
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Secure online document signing between multiple parties. Signatures are recorded on the Cartesi chain.
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The documents themselves are stored using distributed file storage such as IPFS, with hashes stored on blockchain as a permanent, non-changeable record.
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An automated workflow manages the signing process, notifications, and archiving the final contract on chain.
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The use of Cartesi's confidential computing ensures the computations involving private documents can be done without revealing contents.
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An AI assistant can be integrated to answer questions about the legal documents, explain terms and clauses using natural language.
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Anyone can easily verify the document's authenticity and audit the history by checking the hashes and signatures on the public Cartesi blockchain.
By leveraging Cartesi's scalable blockchain and its ability to run complex applications, DocAccord was able to build a fully functional proof of concept in just two days. The solution paves the way for more secure, verifiable and efficient digital contract execution using blockchain and AI. It has applications in industries like real estate, supply chain and decentralized autonomous organizations.
DocAccord's successful hackathon project demonstrates how startups can leverage Cartesi to rapidly prototype and build blockchain apps addressing real-world problems through a combination of public chains, off-chain scaling and secure computing.
This is what the UI / UX of the application looks like:




