Fresco is the world's first blockchain art digital asset network. Through blockchain technology and the Elastos operating system, Fresco can digitally capitalize artworks on a global scale, and at the same time realize the realization, promotion and traceability of collection source records. The two main systems of Fresco are FRES Trust and FRES Edition. FRES trust value is a blockchain-based art value measurement system, which reflects the total trust value of users on a work of art on the Fresco platform. The FRES trust value reflects the comprehensive academic value and market value of artworks in the intricate art environment. FRES chain products allow artwork owners to issue limited digital copyrights of their artworks in limited quantities. It helps expand the global art investing population to an unprecedented size by allowing people to invest in artwork without owning the actual artwork.