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Meridian is a payments facilitator. We’re also building toward trustless refunds, cross-chain settlement, and mrUSD, a USD stablecoin issued via M0. The sections below follow those three tracks through 2026. Meridian Protocol roadmap: UMA arbitration (in progress), Circle CCTP nano-payments (completed), and mrUSD stablecoin via M0 (planned)

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01. UMA Arbitration

Status: In progress Today, refunds on Meridian are issued manually by merchants. UMA’s optimistic oracle, the same dispute system used by Polymarket, adds a trustless escalation path for when refund requests are ignored or denied in bad faith. For EIP-8183 agentic commerce jobs, UMA can serve as the evaluator: the independent party that attests whether work should be completed and paid out, or rejected and refunded.
  • Buyer-initiated dispute escalation
  • Neutral on-chain arbitration
  • Automatic payout on resolution
This brings consumer-grade refund protection to x402 payments without requiring either party to trust a centralized arbiter.

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02. Circle Nanopayments

Status: Completed A new x402 settlement path built on top of Circle’s CCTP (Cross-Chain Transfer Protocol). Instead of routing USDC across chains through a bridge, CCTP burns USDC on the source chain and mints native USDC on the destination, giving Meridian a gas-free, capital-efficient cross-chain rail for small payments. Both paths remain gas-free for the payer. The new Circle path is optimized for high-frequency, small-dollar agent payments where zero fees and native USDC matter more than cashback.

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03. mrUSD

Status: Planned Meridian’s native USD stablecoin, fully backed and issued via the M0 network. mrUSD brings institutional-grade stability together with on-chain programmability purpose-built for agent-driven commerce.
  • EIP-3009 authorization transfers built in
  • Onramps, swaps, and cross-chain rails out of the box
  • Powers agentic commerce flows natively across the Meridian stack

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Timeline

Q2 to Q4 2026. Dates are directional. Scope and sequencing may shift as integrations land. The roadmap is intentionally opinionated about what ships, less so about when.