OpenLedger is an AI blockchain that unlocks liquidity between data, models, applications, and agents. It supports the training, deployment, and on-chain tracking of professional AI models and datasets, addressing key challenges in transparency, attribution, and verifiability. Its core is Proof of Attribution, a mechanism that identifies data points influencing model outputs and rewards their contributors. OpenLedger is built on more than a decade of research from Stanford University, developed by four top scholars.