Cash App, the popular mobile payment platform run by Block, Inc., said Wednesday that users can now send and receive USDC stablecoins on multiple blockchains. 

Block, Inc. Bitcoin Product Lead Miles Suter took to social media to announce the upgrade, saying Cash App customers can now transfer on Solana, Ethereum, Polygon and Arbitrum. "Everything runs from your existing USD balance. No separate wallet, no managing multiple chains, no extra setup, and importantly no fees," Suter said in a post.

Cash App is operated by Block, Inc., the fintech company co-founded by Jack Dorsey. The move to allow USDC transfers marks one of Cash App’s biggest crypto expansions since the app embraced bitcoin several years ago. Circle, which issues USDC, is the largest U.S.-based stablecoin issuer.

Cash App says it has 59 million monthly active customers.

Dorsey is one of the most prominent Bitcoin maximalists in tech and finance, and Block has typically restricted its crypto-related features to Bitcoin tools. The company supports the self-custody Bitcoin hardware wallet Bitkey, the Bitcoin mining unit Proto, and the independent open-source R&D arm Spiral.

The mobile payment company's upgrade comes as banks, fintechs and payment companies invest in or explore stablecoins. Major payment networks Visa and Mastercard are also both expanding into stablecoins. 

Overall, the total stablecoin supply recently surpassed $300 billion, with market-leading Tether's USDT adding over $5 billion over the past month, while the supply of Circle's USDC, Ethena's USDe, and PayPal's PYUSD together declined by roughly $4.2 billion during the same period.

While Suter sees the utility of stablecoins, he said Wednesday that bitcoin is "Money 2.0," fiat is "Money 1.o" and stablecoins are the bridge between the two.

"Making Bitcoin Everyday Money remains my top goal at Cash App, Square, Bitkey and Block," Suter also said. "We remain singularly focused on bitcoin becoming the native currency of the internet."