These artworks created by the artificial intelligence called GAN (generative adversarial network), no one (human of course) was involved in the creation of these artworks, machine created them by machine learning and artificial intelligence algorithms.
Learn more: https://tohidgolkar.com/nft/5000-abstract-artworks/
Each artwork is 512 x 512 pixels and the owner will receive the full resolution at 51200 x 25600 pixels (1.3 Giga Pixel).