> I've been hearing about these use-cases for blockchain for years now ... and still waiting for actual production use. Preserving the integrity of log files a

> I've been hearing about these use-cases for blockchain for years now ... and still waiting for actual production use. Preserving the integrity of log files and other records is a very obvious and huge use case. Enterprise products have been on the market for years and have been put into use by companies like Ericsson and Lockheed Martin. https://www.ericsson.com/en/press-releases/2014/9/ericsson-and-guardtime-create-secure-cloud-and-big-data https://www.ericsson.com/en/press-releases/2014/9/ericsson-a... https://news.lockheedmartin.com/2017-04-27-Lockheed-Martin-Contracts-Guardtime-Federal-for-Innovative-Cyber-Technology https://news.lockheedmartin.com/2017-04-27-Lockheed-Martin-C... https://www.rsyslog.com/doc/v8-stable/configuration/modules/sigprov_ksi12.html https://www.rsyslog.com/doc/v8-stable/configuration/modules/... https://github.com/GuardTime/ksi-tool https://github.com/GuardTime/ksi-tool