Resumen

WEILBACH, William Thomas  y  MOTARA, Yusuf Moosa. Applying distributed ledger technology to digital evidence integrity. SAIEE ARJ [online]. 2019, vol.110, n.2, pp.77-93. ISSN 1991-1696.

This paper examines the way in which blockchain technology can be used to improve the verification of integrity of evidence in digital forensics. Some background into digital forensic practices and blockchain technology are discussed to provide necessary context. A particular scalable method of verifying point-in-time existence of a piece of digital evidence, using the OpenTimestamps (OTS) service, is described, and tests are carried out to independently validate the claims made by the service. The results demonstrate that the OTS service is highly reliable with a zero false positive and false negative error rate for timestamp attestations, but that it is not suitable for time-sensitive timestamping due to the variance of the accuracy of timestamps induced by block confirmation times in the Bitcoin blockchain.

Palabras clave : Digital forensics; blockchain; evidence integrity.

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