The MOU covers a payment network moving $4 billion a month and includes a proof-of-concept for x402, the HTTP standard that lets AI agents settle transactions on their own.
KSNET, South Korea's largest merchant acquirer, signed a memorandum of understanding with the Solana Foundation on 30 July to plug Solana Pay into its network of more than 330,000 merchants. The processor moves roughly $4 billion of card volume and around 130 million transactions every month, giving Solana Pay the largest addressable retail footprint it has secured in any single country. The two sides will also run a proof-of-concept for x402, the HTTP standard designed to let AI agents pay for services on their own.
The MOU is not a live integration. It commits both organisations to design work across KSNET's online and offline payment experiences, which cover the tills, restaurants and transit points that have carried its card terminals for 26 years. Solana Foundation announced the deal in a post its main account flagged as "breaking":
This is the first time a mainstream Asian acquirer has publicly committed to running blockchain rails at this scale. Korea's Virtual Asset User Protection Act, in force since 2024, gives licensed operators a workable rulebook rather than the outright bans other Asian regulators have preferred. The Solana Foundation set up a $100 million Korean fund in 2022 and has been building the region since. KSNET already runs a Crypto.com integration for travellers dating to May 2025, which handles digital-asset payments at retailers across the country. The KSNET deal is larger by an order of magnitude.
Solana Pay has traded on the same argument for three years: fees measured in fractions of a cent and finality inside a second. At KSNET's stated throughput of about 130 million transactions a month, moving all of that on-chain remains impossible with today's card acceptance economics, which is why the MOU stops at "integration into both online and offline payment experiences" rather than a wholesale replacement. What will appear at the point of sale is stablecoin settlement wrapped in familiar UX. KSNET keeps its merchant relationships. Solana clears the money.
x402 is the part of the deal that separates it from a routine payments announcement. First proposed by Coinbase in May 2025, x402 reuses the HTTP "402 Payment Required" status code so that an agent asking for a resource can settle the fee inline before the response comes back. MoonPay's PayBox launched at the end of July to give ChatGPT and Claude non-custodial wallets capable of paying x402 endpoints on Solana and Base. KSNET's involvement drops the standard into a Korean acquirer with actual merchant contracts, not another testnet.
Solana has stitched together a payments story piece by piece across 2026. MoneyGram became an active Solana validator in June, staking SOL and processing blocks for the network it had built its MGUSD stablecoin around. Shopify added Arbitrum on 31 July as the fifth chain accepting USDC at checkout, though Solana Pay still handles the largest share of on-chain retail volume through the earlier Shopify partnership. Add KSNET's 330,000 Korean merchants and the addressable pool for on-chain retail payments looks materially different from the one that existed on 1 January.
One caveat sits in the fine print. KSNET has committed to the design work, not to a rollout date. Solana's own follow-up post confirms x402 is still in test, and the MOU language leaves the acquirer plenty of room to walk away if the technology fails to survive contact with Korean tax rules or card scheme interchange. The market is treating the announcement as a done deal because the number is 330,000. The actual signal is whether the first live merchants show up before the year is out.
Even so, this is a deal in a jurisdiction that matters. Korean regulators have not rolled back the Virtual Asset User Protection Act despite pressure from a new administration and a hostile domestic banking sector. If KSNET turns even a fraction of its network on, Solana will have done what neither Visa nor Mastercard have managed anywhere in Asia: put a public blockchain inside a card acceptance network of national scale. The number to watch is how many of those 330,000 terminals accept a stablecoin payment by the end of the year.
