The Buterin family’s cat, Stirlitz, has been a steady companion throughout Vitalik’s journey in the crypto space. While Vitalik spends countless hours coding and developing Ethereum, Stirlitz quietly lounges nearby, offering a sense of calm in an otherwise fast-paced and evolving world. Often found in a sunlit corner or curled up on a desk, Stirlitz has witnessed key moments in the rise of Ethereum, a silent observer to one of the most revolutionary projects in blockchain. Stirlitz is a reminder that amidst innovation and change, some things—like the loyalty of a family pet—remain constant. You can even find glimpses of Stirlitz on the Instagram account of Vitalik’s mother, adding a touch of personal warmth to their public life.