000			01416nam a2200169 a 4500
005			20260901030335.0
008			250101s2019 xx o 000 0 eng d
100	1		_aTu Bui
245	1	0	_aARCHANGEL: Tamper-proofing Video Archives using Temporal Content Hashes on the Blockchain
264		1	_barXiv _c2019
336			_atext
338			_aonline resource
520			_aWe 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
506	0		_aOpen access — freely available to read.
856	4	0	_uhttps://arxiv.org/pdf/1904.12059v1 _yRead the full paper (PDF)
942			_cERES
999			_c652 _d652