Each NFT was sold for US$40 (S$54) through crypto-currency exchange Crypto.com, with total sales amounting to US$39,960. The value of the NFTs is expected to rise in the secondary market.
The animated artworks are based on the cover of his 365 EP released in 2020 and feature a cartoon version of the rapper as an astronaut. The accompanying music includes a rap verse he wrote specially for the collection.
NFTs can be anything from a drawing to a video clip, and ownership can be bought and sold on a decentralised digital ledger called a blockchain.
The Spacebars collection comprises three series, with each containing a different part of the rap verse.
The 29-year-old, whose real name is Pek Jin Shen, says he was surprised at the response. His music company Drink Entertainment says he is the first South-east Asian music artiste to sell out an NFT so quickly.
The rapper says in a statement: "NFTs are going to change everything about the way the world works. I'm just excited to be exploring the possibilities of how NFTs will change the music industry.
"The countless opportunities it creates for artists and musicians are remarkable. It's an amazing tool to build community engagement, to reach and connect with your audience like never before."
The rapper, who will release a new EP, I AM U, on April 21, worked with several collaborators on the collection. The artwork was designed by Singaporean visual artist Ebao and animated in 3D by American digital creative agency Wild Portals. The music was created with the rapper's frequent collaborator, British producer superjdoug.
The rapper believes that NFTs and blockchain technology will change the music industry. "When Wild Portals approached me for this collaboration back in early 2021, I saw the potential of how music could evolve along with blockchain technology and create endless opportunities for musicians and artists alike."
The Straits Times understands that the rapper is working on releasing more NFT collections.