With Safari and Firefox now blocking third-party cookies by default, and Google tightening controls over cookie-based tracking on Chrome, advertisers are looking for solutions that will still let them identify their audiences as they’ve long been able to. Blockchain can be one piece of this puzzle says Jason Manningham, general manager of FreeWheel-owned Blockgraph, which uses blockchain among other tech for privacy-compliant data matching. In this interview Manningham describes how Blockgraph has ‘deconstructed’ blockchain to power its solution, and outlines some of its key use cases.