Informatica The Blockchain Revolution: Where’s the Disruption? 5 Ottobre 2017 admin For the uninitiated, a blockchain — the technology behind bitcoin — is a type of distributed database used to maintain a set of records, or blocks, each containing a time stamp and linking to a previous block. Once recorded, the data in a block can’t be modified without doing so to all others in the chain — and importantly, access to a block can also be restricted.