Jameson Lopp

Jameson Lopp

Jameson Lopp is the CTO and co-founder of Casa, a self custody service. A cypherpunk whose goal is to build technology that empowers individuals, he has been building multisignature bitcoin wallets since 2015. Prior to founding Casa, he was the lead infrastructure engineer at BitGo. He is the founder of Mensa's Bitcoin Special Interest Group, the Triangle Blockchain and Business meetup and several open source Bitcoin projects. Throughout this time he has worked to educate others about what he has learned the hard way while writing robust software that can withstand both adversaries and unsophisticated end users.

Social

Recent

Projects To Watch 2023: Nostr
Some Users May Want an ‘Everything App’, but What We Need Is Digital Sovereignty
Jameson Lopp argues Twitter's recent rebrand falls in line with big tech's obsession with data. Nostr, an increasingly popular social network, is one alternative.
Projects To Watch 2023: Nostr
(Zoe Holling/Unsplash, modified by CoinDesk)
What Is Crypto’s Downfall? Its Complexity
But that doesn't mean bitcoiners should close their mind to the wider blockchain industry.
(Zoe Holling/Unsplash, modified by CoinDesk)
Screen Shot 2018-07-25 at 5.28.08 PM
Reflections on a Swatting: Inside One Bitcoin Engineer's Security Battle
Bitcoin developer and Casa wallet engineer Jameson Lopp recounts his 2017 swatting, and his fight to find his harasser.
Screen Shot 2018-07-25 at 5.28.08 PM
Lightning network nodes_asinq
What the Data Tells Us About Bitcoin in 2017
Statistics show bitcoin is at the forefront of an increasingly complex ecosystem that continues to grow in a variety of ways. And it refuses to die.
Lightning network nodes_asinq
SPV vs Full Chain Struggle - 5
Could SPV Support a Billion Bitcoin Users? Sizing up a Scaling Claim
A deep dive into claims that it's safe to remove bitcoin's block size limit and instead rely on existing "simplified payment verification" methods.
SPV vs Full Chain Struggle - 5
Screen Shot 2017-07-12 at 5.16.50 PM
Bitcoin and the Benefits of 'Coopetition'
Jameson Lopp makes an impassioned plea for more cooperation between the players in the bitcoin space in order that the system can thrive.
Screen Shot 2017-07-12 at 5.16.50 PM
lopp
Nobody Understands Bitcoin (And That's OK)
Does anyone understand bitcoin? This multifaceted technology is different things to different people, and we should accept that, argues Jameson Lopp.
lopp
Ledger Blue
Review: Putting Ledger's New Bitcoin Hardware to the Test
Ledger's new hardware wallet is the most costly on the market. Does it have the features to justify the expense? BitGo's Jameson Lopp investigates.
Ledger Blue
bitcoin-security
Bitcoin's Security Model: A Deep Dive
CoinDesk takes a look under the hood to understand what security features are and aren't offered by bitcoin.
bitcoin-security
chains
Bitcoin: The Trust Anchor in a Sea of Blockchains
Bitcoin software engineer Jameson Lopp takes a deep and enlightening dive into the unique attributes that make up blockchains.
chains