Solana Foundation Highlights September Payment Developments

The Solana Foundation has outlined five payment-related developments it says took place across the network in September 2026. The roundup covered the launch of Payment Channels, banking-core stablecoin integrations, the arrival of Open USD, reported x402 transaction activity and stablecoin supply growth.

According to the Foundation, Payment Channels went live on Solana on September 3. It said testing exceeded one million payments per second across 100,000 unique wallets.

The update also described developments involving stablecoins and payment infrastructure. Several of the figures and implementation details in the report are Foundation-reported and have not been independently verified in the supplied evidence.

The reported milestones point to continued focus on payments use cases on Solana, though the Foundation’s roundup does not establish how these developments will translate into sustained adoption.

Payment Channels testing

The Foundation said Payment Channels became available on September 3, 2026. It reported that testing surpassed one million payments per second across 100,000 unique wallets.

The claim concerns testing results rather than a measure of regular production payment volume. The supplied evidence does not provide further technical details about the tests or their methodology.

Stablecoins move further into payment infrastructure

Column reportedly integrated USDC and USDT on Solana into its banking core. The Foundation said the integration enables conversion to and from dollars around the clock.

Open USD also reportedly launched on Solana near the end of September. The Foundation said its reserves are held at BlackRock, Lead Bank and BNY.

The stablecoin developments accompanied a reported rise in supply. The Foundation said Solana stablecoin supply reached an all-time high of $17.3 billion on September 25.

Reported x402 transaction share

The Foundation reported that Solana accounted for 76% of x402 transactions between August 22 and September 19, 2026. The supplied evidence does not provide the total number of transactions or an independent breakdown of the activity.

The figure is one of several network and ecosystem metrics cited in the Foundation’s September update. Readers can compare it with the Foundation’s separate report on September growth in tokenized assets, stablecoins and network activity.

What the September roundup shows

Taken together, the Foundation’s account describes activity across payment throughput testing, banking integration and stablecoin issuance. The evidence supports the reported announcements and metrics, but not broader conclusions about long-term usage or market impact.

Payment infrastructure has also been a recurring subject of Solana ecosystem announcements, including the Foundation’s institutional delivery-versus-payment settlement program.

Continue reading: Foundation’s separate report on September growth in tokenized assets, stablecoins and network activity on BTCNews.

Continue reading: Foundation’s institutional delivery-versus-payment settlement program on BTCNews.

Sources

• Solana Foundation: Payments on Solana: September 2026 in Five Stories

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