Clear Channel Outdoor pDOOH RTB Supply
Programmatic digital out-of-home (pDOOH) supply made available through 20+ DSP partners that transact CCO inventory via OpenRTB 2.6 with the DOOH object extension (with imp.qty support and the OpenOOH venue taxonomy where venuetypetax=1). This is not a CCO- hosted REST API — it is a supply-chain contract that buyers access through DSPs/SSPs (Vistar Media, Hivestack, The Trade Desk, Google DV360, etc.). Documented here so the contract, partners and schemas are first-class artifacts in the network.