Circle's new layer-1 blockchain, Arc, is set to debut with integration from Fireblocks, a New York-based digital asset custody provider. This launch comes as competition in the stablecoin market heats up between Circle and major competitor Tether. While the Arc blockchain is not yet active, a public testnet is expected this fall, leading to a full launch by the end of the year. Fireblocks aims to provide custody and compliance support for clients on Arc upon its launch. The early integration of Fireblocks has sparked some criticism, as other projects like Solana took longer to partner with them. Despite this, Circle has made significant strides, including a successful IPO that raised $1.05 billion and a revenue increase reported at $658 million for Q2 2025. As the market cap for stablecoins rises to approximately $277.16 billion, Circle's USDC maintains a notable share, while Tether continues to lead globally with around 60% market dominance.

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