The world's best known prayer to honour the Blessed Virgin Mary, whose origins go back to the Holy Scriptures; in the musical repertoire considered the Sacred music par excellence: the Gregorian Chant. This is the first piece of Gregorian Chant in history to be kept in an NFT, at least as far as we have records, which gives it a high historical value that will grow with time. In addition, this NFT contains the only copy of the performance of the work. The file will be destroyed after mining, to make this NFT an absolutely unique piece.