Altitudes
Maja Vujinovic, Marc BaumannHigh-level views on what’s shaping tomorrow: tech, truth, and you. I’ve worked and lived in 12+ countries. This perspective helps me see what others miss. Subscribe and I help you decode a fast moving world.
| Platform |  | Pricing | Only free issues | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 18 | Subscribers | Read | m011.substack.com |
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Latest Issues
Recent posts by this newsletter. Browse the email archive.
Powell, JPMorgan, and the Quiet Pivot
Jerome Powell said something today that should have rattled every finance desk on Wall Street.
Tempo, Libra, and the Illusion of Neutrality
When Stripe announced Tempo, its new blockchain for payments, the pitch was smooth: a fast Layer-1, fees in dollars not tokens, batched transfers, and a validator set that would “move toward permissionless.” With partners like Visa, Deutsch...
The Great Chain Debate
August 2025 brought a striking coincidence: within days, Stripe, Circle, and Google all unveiled plans for their own Layer-1 blockchains (L1s). Stripe’s Tempo, Circle’s Arc, and Google Cloud’s Universal Ledger (GCUL) each promise faster pay...
Ethereum, Stablecoins, and the Operating System of Global Finance
I first understood the power of programmable money not on Wall Street or in Silicon Valley, but in the streets of Lagos and São Paulo. Living across five continents and working in mobile payments, I saw firsthand how fragile currencies and ...
Authors
The writers behind this newsletter.
Marc is the Founder & CEO of 51 | fiftyone.xyz, the industry’s most actionable insights on digital assets. Subscribe for weekly alpha: www.51insights.xyz Marc has been in crypto since 2016, previously Head Marketing & Comms at Bitcoin Suisse.
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