Blockchain has been a hot topic for a decade, but what about its real-world impact? We're talking about its role in delivering vaccines, enabling microfinance, and making humanitarian aid more transparent.

This week's guest is Arun Maharajan, Blockchain Technology Lead at UNICEF's Office of Innovation. Joining us from Sweden, Arun is on the front lines, where his team is using blockchain to bring trust, transparency, and efficiency to complex global operations. He'll walk us through how they're tracking cold chain data for vaccines in Bangladesh and helping youth entrepreneurs in Burundi access microloans.

We'll get into the human side of blockchain, exploring its evolution from early platforms like Bitcoin to the privacy-preserving third-gen tech of today. Arun also shares what it takes to bridge cutting-edge innovation with field work in some of the world's most challenging environments.

And of course, in the lifestyle segment he'll share:

• His recent trip to Italy and playing at Rockin’1000
• How travel is his go-to for a personal reset
• His winter goal of taking a dip in a very, very cold pool