Marlin is a zero-knowledge proving system. Emerging amidst universal SNARKs contenders such as Sonic, Libra, and Plonk, Marlin was designed specifically for systems requiring individual rather than batched verification. It offers rapid verification times, making it ideal for instances demanding swift response without batching. By prioritizing individual over batched verification, Marlin adeptly addresses the shortcomings of its predecessor, Sonic, setting itself apart in the realm of cryptographic protocols.