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Altitude Demonstrates X9.150 QR Invoice Payments With USDC on Solana
The Money20/20 presentation also mentioned FedNow and the RTP network in connection with integrations.

Altitude demonstrated the X9.150 payment QR standard at Money20/20 by showing how a business could settle an invoice with USD Coin (USDC) on Solana, an example of stablecoin bill payment.
The use case centers on a business invoice. X9.150 is the QR payment standard featured in the demonstration, USDC is the payment asset, and Solana is the network used for settlement.
FedNow and the RTP network were also mentioned in connection with integrations. The invoice payment demonstrated at Money20/20 used USDC on Solana.