 Subsidiary Cornerstone Construction Testing Cryptocurrency Payments to Reduce Fees and Potential for Fraud or Chargebacks EL CAJON, CA ACCESSWIRE April 27, 2021 Solar Integrated Roofing Corp. OTC PINK:SIRC, an integrated, single-source solar power and roofing systems installation company, today announced it has selected Coinbase Commerce as a cryptocurrency partner and has completed the technical and financial integrations to begin testing the acceptance of cryptocurrency payments from customers at its subsidiary Cornerstone Construction. Recently acquired Cornerstone Construction is a licensed roofing contractor in South Carolina and has served thousands of clients and gained hundreds of 5 Star Reviews throughout the southeastern United States since 2017 with quality solutions for residential and commercial roofing and solar projects. 