Downloadable software for scorecard development, score computation, and scorecard management, and proprietary certification of the same, all in the field of home and real estate valuation; Downloadable software for scorecard development, score computation, and scorecard management, and proprietary certification of the same, all in the field of home and real estate valuation, and all of the foregoing featuring blockchain technology; Computer database software featuring information in the fields of real estate, home improvement, home remodeling, home renovation, home construction, and home maintenance and repair services; Data mining and data warehousing services, namely, using proprietary software to evaluate, analyze and collect data for use in establishing a proprietary home and real estate ranking and certification system to provide a measurement of market valuation against comparable homes and real estate and for use in risk mitigation and tolerance ranking for insurance purposes; Downloadable software for managing and tracking home history, value and repair and maintenance information; Downloadable software for providing consumers with information about professionals, providing professionals with information about consumers, and connecting professionals and customers through referrals; Downloadable software for enabling messaging, scheduling, and conducting transactions between consumers and professionals; Downloadable software for providing consumer information and referrals connecting consumers and professionals; Downloadable software for enabling users to post ratings, reviews and recommendations and tag and share content in the fields of home improvement services, home remodeling services, home renovation services, home construction services, and home maintenance and repair services of others