https://www.vida.id/ https://www.vida.id/wp-content/uploads/2019/09/IDI-Certification-Practice-Statement-V2.2.pdf [Book on CA](http://www.redbooks.ibm.com/redbooks/pdfs/sg248336.pdf) {paper}[Distributed CA](http://www.aetic.theiaer.org/archive/v2/v2n3/p2.pdf) {paper}[Distributed CA based on polynomial over ECDSA ](https://sci-hub.tw/10.1109/snpd.2013.53)
https://www.vida.id/
https://www.vida.id/wp-content/uploads/2019/09/IDI-Certification-Practice-Statement-V2.2.pdf
Book on CA
{paper}Distributed CA
{paper}Distributed CA based on polynomial over ECDSA