01416nam a2200169 a 4500 20260901030335.0 250101s2019 xx o 000 0 eng d Tu Bui ARCHANGEL: Tamper-proofing Video Archives using Temporal Content Hashes on the Blockchain arXiv 2019 text online resource We present ARCHANGEL; a novel distributed ledger based system for assuring the long-term integrity of digital video archives. First, we describe a novel deep network architecture for computing compact temporal content hashes (TCHs) from audio-visual streams with durations of minutes or hours. Our TCHs are sensitive to accidental or malicious content modification (tampering) but invariant to the codec used to encode the video. This is necessary due to the curatorial requirement for archives to format shift video over time to ensure future accessibility. Second, we describe how the TCHs (and the models used to derive them) are secured via a proof-of-authority blockchain distributed across multiple independent archives. We report on the efficacy of ARCHANGEL within the context of a trial deployment in which the national government archives of the United Kingdom, Estonia and Norway participa Open access — freely available to read. https://arxiv.org/pdf/1904.12059v1 Read the full paper (PDF) ERES 652 652 0 0 0 3 CYB MAIN MAIN SCICOMP 2026-09-01 0 YGE000913 2026-09-01 03:03:35 https://arxiv.org/pdf/1904.12059v1 2026-09-01 PAPER