Medium

Jeffrey Berthiaume

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Jeffrey Berthiaume

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Dec 31, 2025

Building Cardano for Regular People

The Vendano 2026 Manifesto

Building Cardano for Regular People

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Jeffrey Berthiaume

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Aug 11, 2025

The History of Currency — and Why We’ve Lost the Plot

Somewhere along the way, we stopped asking a basic question: What is money actually for?

The History of Currency — and Why We’ve Lost the Plot

Jeffrey Berthiaume

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2d ago

Broadcasting and Detecting iBeacons in Swift 6

Or: how I got tired of carrying around little Bluetooth pucks and turned my iPhone into one instead.

Two smartphones demonstrate indoor positioning using Bluetooth iBeacons. One phone broadcasts a beacon signal while the other detects it, with a glowing location marker between them over an architectural floor plan, illustrating how iBeacon technology enables indoor navigation and proximity detection.

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Jeffrey Berthiaume

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Jan 22

Cardano has wallets for charts. Where’s the wallet for checkout?

A practical UI comparison of the top Cardano wallets

Cardano has wallets for charts. Where’s the wallet for checkout?

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Jeffrey Berthiaume

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Jan 22

Stop pricing ADA in dollars

The exchange rate is optional

Stop pricing ADA in dollars

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Jeffrey Berthiaume

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Jan 9

Blockchain notes from CES 2026

Web3 Still Isn’t “Mainstream”

Blockchain notes from CES 2026

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Jeffrey Berthiaume

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Dec 10, 2025

Cardano’s Promise vs. Its UX Reality

Some tough love — is it time for an intervention?

Cardano’s Promise vs. Its UX Reality

Jeffrey Berthiaume

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Nov 28, 2025

Cardano 2026: Everyday Money, Everyday People

How a small mobile wallet project called Vendano hopes to help

Cardano 2026: Everyday Money, Everyday People

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Jeffrey Berthiaume

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Nov 9, 2025

How Impossible Is It to Guess a Crypto Wallet?

When my 13-year-old asked, “What if someone just guesses my wallet words?”, I smiled. It sounds simple. You’ve got twelve words. You try…

How Impossible Is It to Guess a Crypto Wallet?

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Coinmonks

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Jeffrey Berthiaume

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Nov 9, 2025

Hidden credit card fees, and what Cardano does instead

Clear costs, simple rules, rewards you can redeem.

Hidden credit card fees, and what Cardano does instead

Jeffrey Berthiaume

Jeffrey Berthiaume

Jeffrey Berthiaume is a technology veteran and senior executive, who has spent decades creating and innovating technology.

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