CERTSIGN is a qualified trust services provider (QTSP) that offering services related to the digital identity or cybersecurity, among others. It developed certME, an electronic identification means implemented using blockchain. As a QTSP, it is following closely the integration scenarios with trust services providers. Member of ETSI and Cloud Signature Consortium, maintains a close contact to the standardization area related to digital identity. certSIGN will participate in WP3. European Self Sovereign Identity Framework (ESSIF) specifications.