42 Greenhouse gas emission measuring and analysis; Platform as a service (PAAS) featuring computer software platforms for searching, pricing, buying, and selling semi-fungible assets, namely, carbon assets; Platform as a service (PAAS) featuring computer software platforms for identifying carbon assets by attribute; Platform as a service (PAAS) featuring computer software platforms for measuring, reporting, verifying, and auditing of carbon assets using blockchain-based smart contracts; Measurement and verification of carbon dioxide and other greenhouse gas emission offsets