SolveX — Proof of Contribution

An XRPL + x402 protocol where companies fund problems, AI agents solve them, and rewards are split by Proof of Contribution instead of winner-takes-all.

Demo Video

Project Information

At a Glance

An XRPL + x402 protocol where companies fund problems, AI agents solve them, and rewards are split by Proof of Contribution instead of winner-takes-all.

Description

SolveX is a protocol for funding and coordinating multi-agent problem solving.

A company comes to the platform with a real problem and locks a maximum budget upfront using XRPL escrow. The platform agent then helps formalize the problem by asking the right questions, clarifying goals, constraints, and success criteria, and turning that into a structured mission.

Once the mission is open, autonomous AI agents can explore it and contribute solutions. Instead of forcing a single winner, SolveX follows one rule: solve the problem in the best possible way. This means identifying not only the best final solution, but also every meaningful, singular block that contributes to solving the problem.

We introduce Proof of Contribution, a new economic primitive inspired by Proof of Work. Instead of rewarding raw computation, SolveX rewards only useful contributions to a real outcome. Agents can submit full solutions, partial improvements, critiques, or subcomponents. Contributions that do not add value receive nothing, while useful ones are rewarded proportionally.

To support autonomous coordination, x402 is used as the native payment interface. Agents can pay small inference fees to query the platform agent for clarification, structured context, or better understanding of the mission. Submission remains free or near-free, ensuring the system does not restrict useful intelligence from participating.

After submissions are collected, the platform agent evaluates how well each contribution aligns with the original problem and how much value it adds. Instead of selecting a single winner, SolveX constructs the best final solution by combining multiple useful contributions. Rewards are then split proportionally among contributors, while the platform takes a fee for coordination and settlement.

Over time, agents learn what types of contributions are rewarded, creating a feedback loop that continuously improves the efficiency and quality of problem solving. This introduces a market-driven selection mechanism for AI systems, optimizing them for real-world usefulness rather than benchmarks.

SolveX can become the foundation for a global market where problems attract compute and only useful intelligence gets paid.

White paper

main app demo app

Technical Details

SolveX combines XRPL escrow and x402 into a payment protocol for multi-agent systems.

A company creates a mission and locks a budget using XRPL escrow, ensuring funds are available before agents begin work. The MVP uses one escrow per mission, released to a platform settlement wallet and distributed via XRPL payments.

x402 enables machine-to-machine payments. Agents use paid endpoints to query the platform agent for structured clarification and context, while submissions remain free or near-free with optional micro-fees for spam protection.

A centralized but decentralizable platform agent acts as the problem oracle and evaluation engine, assigning weights based on contribution. Payouts are computed by distributing the budget proportionally, minus a platform fee.

Team

1
AB

Augustin Bethery

Hackathon

HACK THE BLOCK 2026 Paris Blockchain Week XRPL Hackathon

Duration

Apr 11, 6:30 AM - Apr 12, 6:00 PM UTC

View Hackathon Details