Jameson Lopp
Casa co-founder and Chief Security Officer
Practical research on protecting private keys, planning recovery and testing the physical durability of seed backups.
Why read Jameson Lopp?
Lopp's seed-backup guide starts with the failures a recovery plan must survive: destruction, theft and a backup that its owner cannot successfully restore. He explains the tradeoffs between redundancy, complexity and access, then insists on testing recovery. It is a useful framework for understanding why buying a backup device is only one part of protecting a wallet.
His metal-storage tests let you inspect what happens to actual backup products under heat, corrosion and crushing. The review index brings those results together for comparison. Read the guide first to define the problem you are solving, then the tests to examine whether a particular physical design survives the relevant kind of damage.
Selected work
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How to Back Up a Seed Phrase
What must a wallet recovery plan survive? Start with the threat model, then the recovery test and the wallet metadata section. These connect the backup medium to whether you can actually regain access.
Cite this selection
XFollowList, “How to Back Up a Seed Phrase” reading notes in the Jameson Lopp profile. https://xfollowlist.com/people/jameson-lopp#work-b2f55d9bae41
The linked work is the original source; this permalink identifies XFollowList’s reason to read it. Original work published .
Profile-source checking date and references · Dated reading map
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Metal Bitcoin Seed Storage Stress Test
What does a durability claim look like when tested? His original report documents heat, corrosion and crushing tests, with photographs and product-specific outcomes.
Cite this selection
XFollowList, “Metal Bitcoin Seed Storage Stress Test” reading notes in the Jameson Lopp profile. https://xfollowlist.com/people/jameson-lopp#work-0998bc3846a0
The linked work is the original source; this permalink identifies XFollowList’s reason to read it. Original work published .
Profile-source checking date and references · Dated reading map
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Metal Bitcoin Seed Storage Reviews
How do different designs compare? The review index links the test reports and organizes their results, making it easier to inspect the evidence behind a grade.
Cite this selection
XFollowList, “Metal Bitcoin Seed Storage Reviews” reading notes in the Jameson Lopp profile. https://xfollowlist.com/people/jameson-lopp#work-d3d9c400921c
The linked work is the original source; this permalink identifies XFollowList’s reason to read it. Original publication date is unknown.
Profile-source checking date and references · Dated reading map
Projects & roles
Casa
His personal site identifies his co-founder and security leadership roles at the self-custody company.
Metal Seed Storage Reviews
His public comparison of physical backup devices and the underlying test reports.
Sources & further reading
Profile sources checked . This describes checking these references, separately from the publication dates of selected works.
- His own site records his current Casa roles and the focus of his custody research.Link to this source note
Cite this profile’s source check
XFollowList, Jameson Lopp profile sources. Sources checked 2026-10-09. https://xfollowlist.com/people/jameson-lopp#sources-checked