Rex Kirshner
I travel. I take photos and videos. I run. I believe great stories happen to those who can tell them.
I'm a researcher, content creator, and consultant. Building off an education in computer science and a background in corporate finance, I provide strategic consulting to growing businesses while creating educational resources about Ethereum, hosting podcasts, and building communities around decentralized technology.
I also believe that Ethereum is the world computer—a globally shared piece of technology that will make the world more open, fair, and trustworthy.
Consulting & Services
RBK Strategies provides management and financial consulting—helping businesses with operations, finance, and blockchain strategy. Scratch Space is a technical development agency specializing in custom software solutions.
Whether you need strategic guidance to scale your business or custom software built from scratch, we bring hands-on experience to every engagement.
Publications
Blog
Essays on AI agents, Ethereum, decentralization, and the tools we use to build. Writing about what I'm learning at the frontier of technology.
View all posts →Podcasts
Conversations about Ethereum, crypto, and the future of decentralized technology.
A podcast focused on the bleeding edge of technology, from blockchain to AI, and all things future tech.
Expansion explored crypto's modular ecosystem & scaling solutions. Inactive.
Unscripted conversations about Ethereum. Acquired by Blockworks; inactive.
Inevitable Ethereum Wiki
Wiki explaining crypto and finance — technical, historical, and more. Built for any audience, no background knowledge required.
Visit Wiki →
Creative
Photos and videos let us travel back in time. They let us re-experience the best moments of life. I capture everything on my iPhone (and occasionally a GoPro or drone).
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Videos
The View Underneath
2026
A compilation of diving videos from 2021-2025
2025 Year in Review
2025
A video summary of 2025
Palisades Fire - Anniversary
2025
Made for the 1 year anniversary of the Jan 2025 Palisades Fire; more content at PalisadesFire2025.org
Palisades Fire
2025
Documenting the January 2025 Palisades Fire that destroyed my home town
2024 Year in Review
2024
A video summary of 2024
15k Miles
2024
A commemoration of 15k total miles run
2023 Year in Review
2023
A video summary of 2023
Incredible Earth
2023
2022 Year in Review
2022
A video summary of 2022
10k Miles
2022
A commemoration of 10k total miles run
2021 Year in Review
2021
A video summary of 2021
2020 Year of Change
2020
A video summary of 2020
Wanderlust
2020
A summary of the time after I left my first career, moved home and found the love of my life
Quarantina Wine Mixer
2020
Documenting the experience of the 2020 COVID-19 Quarantine
2019 Year in Numbers
2019
A video summary of 2019
5k Miles
2019
A commemoration of 5k total miles run
2018 Year in Review
2018
A video summary of 2018
My Time at Anheuser-Busch
2018
A video summary of my first career at Anheuser-Busch InBev
Photography
Running Journey
In November 2016, as I was packing up to head home from work, I downloaded Couch to 5K and resolved to get started that night. Six months later I'd lost 100 pounds and finished a half marathon. Six months after that, I ran the New York Marathon in 3:35.
Since that first run in 2016, I've logged thousands of miles across 42+ countries. These days I make a point of running long distances wherever I am. I've experienced everywhere in a completely new way.
Each mile tells a story.
Running Stats
As of December 5, 2025
17,730
Total Miles
2,780
Total Runs
43
Countries
6.38
Avg Miles/Run