According to the source, I can’t cite crypto/Web3 media as a source. Please share an official press release or documentation from Stripe, Mastercard, or UBS so I can produce a trading-grade summary with verified citations. Ideal sources: Stripe newsroom or engineering blog detailing Tempo’s public launch, Mastercard Newsroom confirming participation or integration, and UBS media relations confirming onboarding.

According to the source, Ethereum researcher Dankrad Feist has left the Ethereum Foundation to help build Stripe’s Tempo blockchain, with the post stating a reported $5 billion valuation (source: public X post dated Oct 17, 2025). The shared link headline also indicates Tempo raised $500 million, underscoring substantial funding for a payments-focused blockchain initiative (source: headline text of the shared link in the same X post, Oct 17, 2025). For traders, the combination of a $5 billion valuation and fresh capital points to rising competition in payments-oriented L2 and scaling stacks that could influence ETH ecosystem sentiment and flows (source: details cited in the public X post and shared link headline, Oct 17, 2025).