In a first-of-a-kind transaction happening Friday, all it takes to switch from the old world of centralized clearing houses to the frontier of decentralized blockchains is the press of a button.
A company called Marex Solutions is issuing two separate structured notes. Both notes were created using ResonanceX, an investing platform built by Guillaume Chatain, a former managing director at JPMorgan Chase. The first note will be settled the old-fashioned way, on Clearstream, the European clearing house.
But the second, otherwise identical note will be registered, cleared and settled on the public ethereum blockchain. All the issuer has to do to change this parameter is select a different option from the drop-down menu on ResonanceX's dashboard.

Seen at: https://www.coindesk.com/security-settles-ethereum-first-kind-blockchain-transaction/