Sellers include retailers, dealers, companies, or individulas that sell new or second-hand products. E.g., Ryans, Star Tech, and 2nd hand market (Bikroy.com, OLX, Car24, and Traditional Market)
Buyers include individuals or entities purchasing products from dealers, companies, shops, or retailers. This includes customers buying new products and those purchasing second-hand items.
Verifiers are organizations or individuals that need to verify the ownership and authenticity of products. E.g., Law Enforcement Agencies, BD police, Banks, and Insurance Companies.