I make software. I look around me.
keeshux on the Internet. Inspiring and leading by example:
- Passepartout, a VPN client and networking library used on millions of Apple devices
- Basic Blockchain Programming, a series about Bitcoin programming (2015)
- Word Fill, my first profitable app based on my thesis on crosswords (2011)
Have a look at my printable résumé.
Blog
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Who cares about performance?
Mar 25, 2025
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Frontend development is easy
Mar 19, 2025
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Rewriting Passepartout for v3
Mar 11, 2025
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Deploying to the App Store: The cost you didn't expect
Mar 03, 2025
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The path to an obscure crash
Mar 02, 2025
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Wallet software
Jun 23, 2015
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The first transaction (pt. 2)
Jun 03, 2015
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The first transaction (pt. 1)
Jun 03, 2015
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Inside transactions
Jun 01, 2015
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Standard scripts
May 29, 2015
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The Bitcoin Script language (pt. 2)
May 25, 2015
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The Bitcoin Script language (pt. 1)
May 25, 2015
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Scripts in transaction processing
May 15, 2015
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Network interoperability (pt. 2)
May 14, 2015
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Network interoperability (pt. 1)
May 14, 2015
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Elliptic-curve digital signatures
May 13, 2015
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Elliptic-curve keys
May 12, 2015
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Keys as property
May 11, 2015
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Serialization (pt. 2)
May 01, 2015
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Serialization (pt. 1)
May 01, 2015
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Bytes and hashes
Apr 25, 2015
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A developer-oriented series about Bitcoin
Apr 24, 2015