Pearl network — a Proof-of-Useful-Work L1 protocol, where mining is produced natively from AI computations. The heart of the protocol is a new and efficient implementation of the core GPU operation (matrix-multiplication), allowing GPUs to implement proof-of-work as a side-effect of AI training and inference workloads (2-for-1). As such, the Pearl protocol intertwines energy, data, and money into a single atomic digital asset. This document outlines the protocol design, key implementation choices, and various economic aspects of the system.