EternalOS is building a durable, structured record of a person - in open formats, held in several places, designed to stay readable long after the platforms are gone.https://eternalos.comenhttps://eternalos.com/blog/who-will-verify-the-record-is-genuine-in-a-hundred-yearshttps://eternalos.com/blog/who-will-verify-the-record-is-genuine-in-a-hundred-yearsA record that survives is not automatically one that can be trusted. What a reader in a century can check, what they cannot, and why the proof must live next to the content.Thu, 22 Oct 2026 00:00:00 GMTprovenanceintegrityverificationwitnesseshttps://eternalos.com/blog/the-password-that-dies-with-youhttps://eternalos.com/blog/the-password-that-dies-with-youEncryption protects a record and seals it just as well. How keys are held over decades decides whether anyone can ever open what was so carefully kept.Tue, 20 Oct 2026 00:00:00 GMTencryptionkey custodyaccesssuccessionhttps://eternalos.com/blog/what-starship-changes-for-keeping-recordshttps://eternalos.com/blog/what-starship-changes-for-keeping-recordsCheap mass to orbit makes off-planet archives sound close. Launch was never the hard part of keeping a record readable, and Starship does nothing about the parts that are.Wed, 07 Oct 2026 00:00:00 GMTstarshipspacexoff-planet archivesmaintenancehttps://eternalos.com/blog/data-in-glass-project-silica-and-the-crystal-orbiting-the-sunhttps://eternalos.com/blog/data-in-glass-project-silica-and-the-crystal-orbiting-the-sunMicrosoft says data in glass should last 10,000 years; a crystal riding a Tesla around the Sun claims far more. What the numbers mean, and what glass cannot fix.Wed, 30 Sep 2026 00:00:00 GMTproject silicaglass storage5d crystalmedia longevityhttps://eternalos.com/blog/cubesats-a-standard-that-outlived-its-satelliteshttps://eternalos.com/blog/cubesats-a-standard-that-outlived-its-satellitesMost CubeSats burn up within a few years. The ten-centimetre specification they are built to has lasted more than a quarter of a century, and that is the part worth copying.Wed, 23 Sep 2026 00:00:00 GMTcubesatsstandardsspecificationslongevityhttps://eternalos.com/blog/the-library-that-crashed-on-the-moonhttps://eternalos.com/blog/the-library-that-crashed-on-the-moonIn 2019 a nickel archive of human knowledge hit the Moon aboard the Beresheet lander. It probably survived, which is exactly why it teaches what survival means.Wed, 16 Sep 2026 00:00:00 GMTlunar libraryarch missiontime capsulesaccesshttps://eternalos.com/blog/twenty-one-terabytes-under-the-permafrosthttps://eternalos.com/blog/twenty-one-terabytes-under-the-permafrostIn 2020 GitHub put a snapshot of every active public repository on film in a mine on Svalbard, designed to last a thousand years. The film is the least interesting part.Wed, 09 Sep 2026 00:00:00 GMTarctic code vaultself-describing archivesfilmsvalbardhttps://eternalos.com/blog/your-life-is-in-accounts-that-end-when-you-dohttps://eternalos.com/blog/your-life-is-in-accounts-that-end-when-you-doAlmost everything a person leaves behind now sits inside services that were never designed to outlive them, under terms most people have never read.Wed, 02 Sep 2026 00:00:00 GMTdigital estateplatformsaccessinheritancehttps://eternalos.com/blog/a-terabyte-of-photos-is-not-a-memoryhttps://eternalos.com/blog/a-terabyte-of-photos-is-not-a-memoryCapture got free and description did not. The result is enormous personal collections that nobody can meaningfully search, read or inherit.Wed, 19 Aug 2026 00:00:00 GMTmetadatadescriptionselectionarchiveshttps://eternalos.com/blog/the-formats-that-will-still-open-in-2125https://eternalos.com/blog/the-formats-that-will-still-open-in-2125Format obsolescence is the failure mode nobody notices until it has already happened, and the defence is unglamorous, well understood and mostly ignored.Wed, 05 Aug 2026 00:00:00 GMTfile formatsobsolescencemigrationstandardshttps://eternalos.com/blog/we-are-not-building-a-chatbot-of-your-grandmotherhttps://eternalos.com/blog/we-are-not-building-a-chatbot-of-your-grandmotherSystems that simulate the dead are being sold now. The objection is not that they are eerie — it is that they overwrite the record they were built from.Wed, 22 Jul 2026 00:00:00 GMTgriefbotssimulationrecord integrityethicshttps://eternalos.com/blog/designing-a-record-that-survives-its-own-contexthttps://eternalos.com/blog/designing-a-record-that-survives-its-own-contextThe hardest preservation question is not storage. It is what a record must contain to be understood by someone who shares nothing with the people who made it.Wed, 08 Jul 2026 00:00:00 GMTself-describing archiveslong nowinterstellardesign constraints