Geoff Teehan
@gt
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Making bitcoin simple and useful. Design co-founder at Lightspark. Previously VP Design at Meta. Co-founder Teehan+Lax
California, USA
Joined October 2008
I wrote about railroads, Betamax, AT&T, bitcoin and how open systems compound.
lightspark.com
Closed systems thrive on control and comfort, but they always hit limits. History—from AOL to AT&T to railroads—shows that openness unlocks trust, scale, and innovation. Discover why Bitcoin, UMA,...
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If it’s not built on Bitcoin, it’s not the future. It’s just yesterday’s gatekeepers in new clothes.
There’s Bitcoin. And there are CorpChains. At @Lightspark, we’re working tirelessly to ensure the future of money looks like the open Internet, and not like today’s financial system where the old gatekeepers are just replaced by new ones.
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At Reagan. It’s now every time you fly. Delayed. Claiming maintenance issues. It’s every time.
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Unilateral exit is a core Bitcoin principle. If you need permission to leave, you’re not sovereign. Spark just made sure you don’t have to ask.
Unilateral exit is now live. > You can leave Spark anytime.> No matter what happens. If you have to ask anyone besides Bitcoin for your Bitcoin back, it’s wrapped.
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An iPhone 4 in 2010 was $699. Bitcoin was $0.10. That’s worth $821 million today.
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2) Automatic widow/orphan control. Quark could automatically fix lonely words at the end of lines. Would be amazing to see Figma handle this automatically. I know they are working on way bigger things, but there is still some awesome ux in old software.
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Two small ideas @figma could borrow from 1990s QuarkXPress to improve text selection:.1) Multi-click text selection:.1 click = cursor.2 = word.3 = sentence.4 = paragraph.5 = full text block. It sounds fussy, but once the muscle memory kicks in—it’s way faster than you’d think.
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Spark is live. Stablecoins on Bitcoin. Instantly issued. Instantly distributed.
spark.money
Spark is a high-speed Bitcoin settlement stack. Move BTC and stablecoins instantly, issue assets, and build financial apps with powerful, easy-to-use SDKs.
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Who needs 12 months when TTS pays in 1 📈. 40 days, $120k up… we’ve got the market on a leash
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Huge props to the team for the immense amount of work they did on our new brand for @lightspark.
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RT @awilkinson: In order to get anything right, you almost always have to get it wrong first. Typically 1-3 times.
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An awesome launch today. USA ⇒ Mexico realtime bank-to-bank settlement. USD to MXN. Instant + 24/7. Using @lightspark Extend and UMA (Universal Money Address) on the Bitcoin Lightning network. Feels like magic.
uma.me
The Universal Money Address (UMA) open-source standard combines human-readable Lightning Addresses and enhanced messaging services with the Lightning Network’s real-time, global payment rails to make...
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RT @davidmarcus: How Libra Was Killed. I never shared this publicly before, but since @pmarca opened the floodgates on @joerogan’s pod, it….
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RT @CedYoungelman: #Bitcoin is never going to zero because I just posted a limit order for all 21,000,000 #Btc at $.01 just in case.
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this song has been stuck in my head all day and now it's stuck in yours
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RT @davidmarcus: UMA — short for Universal Money Address — is like email for money. Last week, we unveiled new foundational capabilities: 1….
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