Stripe is quietly developing a proprietary Layer-1 blockchain dubbed “Tempo” aimed at high-volume payment processing, Fortune reported, citing a now-removed job posting on the Blockchain Association’s careers board. The listing, dated Aug. 3, described Tempo as a “high-performance, payments-focused blockchain” being built with crypto venture capital firm Paradigm, whose co-founder Matt Huang sits on Stripe’s board. The advertisement said the project is run by a five-person team and is compatible with the Ethereum Virtual Machine. The job notice was taken down after Fortune sought comment from the companies. Stripe and Paradigm have so far declined to confirm the initiative, which would give the San Francisco-based fintech direct control over the settlement layer that handles stablecoin and other on-chain payments. Launching its own chain would extend Stripe’s recent foray into crypto infrastructure. The company, last valued at roughly $91.5 billion, spent $1.1 billion last October to buy Bridge, a stablecoin-integration platform, and followed up in June with the purchase of wallet developer Privy. Analysts say a dedicated network could let Stripe offer predictable fees and uptime for merchants while reducing dependence on third-party blockchains. The move highlights a broader trend of large payments and exchange operators creating bespoke blockchains—such as Coinbase’s Base—as they seek greater control of transaction rails. Observers note that Tempo’s adoption will hinge on whether Stripe keeps the network open to other payment providers or limits it to its own ecosystem.