The problem Claudio – Onchain Notary Agent solves

Claudio tackles a pervasive problem: the friction and uncertainty of collecting legally binding signatures in a global, digital world.

Traditionally, signing a contract is a slow journey. Multiple intermediaries—lawyers, notaries, verification providers—must coordinate, IDs are checked manually, and centralized systems hold the records. It’s cumbersome, expensive, geographically limited, and vulnerable to human error or fraud.

Imagine a freelancer in Chile needing to sign a contract with a client in Germany. Weeks can pass, emails are exchanged, documents printed, notarized, and scanned—all just to establish trust. Claudio rewrites this story.

Claudio acts as an AI-powered on-chain notary, streamlining the entire process:

• Instant onboarding: Users can sign with their own wallet or have Claudio generate one on the spot.
• Smart contract preparation: Claudo also can write and prepare documents for you.
• Blockchain verification: Every signature and agreement is immutably recorded on-chain, creating transparent and tamper-proof proof.

The result? Anyone—businesses, DAOs, freelancers, or individuals—can execute agreements faster, safer, and without borders, while retaining cryptographic proof of their commitments.

Challenges we ran into

The first and most important challenge was getting an engineer (Cristian) and a lawyer (Eugenio) to work together effectively. Aligning technical possibilities with legal requirements required constant communication and iteration, as each side approached problems from very different perspectives.

Another key hurdle was bridging legal standards with blockchain execution. Traditional contracts rely on established legal frameworks, signatures, and notarization processes, whereas on-chain agreements require translating those concepts into smart contracts that are enforceable and verifiable on-chain.

While we don’t yet have the full legal validation for every jurisdiction, Claudio provides a working framework for agreements: it allows parties to draft, sign, and notarize contracts on-chain, creating cryptographic proof and demonstrating that the approach is feasible.

Smart Contract Address(es)

Smart Contract Address

Contract:: 0x363203d21835547daebe7f8fc074a20c958b0965

View on BaseScan

This is the core contract powering Claudio’s onchain agreements. Key functions include:

• createAgreement(caseId, employer, coworker)

  • Can only be executed by Claudio.
  • Deploys a new agreement onchain tied to a specific caseId.
  • Stores the employer and coworker addresses allowed to sign.

• signAgreement(caseId)

  • Can only be executed by the wallet addresses registered by Claudio.
  • Allows authorized participants (employer or coworker) to sign the agreement directly onchain.

These functions allow Claudio to draft and notarize agreements as smart contracts while ensuring only the intended participants can finalize the signature process.

Other Onchain Proof

Other Onchain Proof

Claudio was officially launched just 2 days ago, and we already have live agreements executed onchain.

Here are two verified transactions of fully signed contracts:

• Tx 1 – first fully signed agreement
• Tx 2 – second fully signed agreement

These demonstrate that the platform is operational and capable of creating and notarizing agreements onchain.