Muhammad Hasan Rahmatullah (born William Lamont Robinson, 28 May 1972/Rabi Al Thany 1392 AH), writes and makes fine-art as HA or Hādin. Hadin is a laqab, an honorific epithet, meaning ‘guided’ or ‘a guide’.

In 2022 Hasan launched his creative agency Athar. To curate his catalog, writings, artworks, posters, web design & development, merchandise design, and digital marketing consultancy. Including implementing a hybrid Wallet to Wallet (W2W) system for NFT tandem or twin goods.

He also began producing nasheed, post-modern hip-hop & beat art for Athar/Footprints Music Group, and the Traces collection of his catalog under Pleasure Mine Recordings / William Lamont Robinson. Including Ghadaqan Music (BMI), So Amusing (ASCAP) and Urban Sufi Music (SESAC).

As a member of SESAC since 2004, he marked his independent, sole-proprietorship and creative professionalism for 25 years. With 19 years as an Independent Music Publisher (with over 500 compositions published).

As a Writer, Graphic Designer, Audio Engineer and Music Producer he gained practical B2B and B2C service knowledge. With multi-media formats from Fine Art, Vinyl, CD and innovate USB-Albums and NFTs.