The 5 year covered bonds were designed by FORGE and issued on the public Ethereum blockchain with Societe Generale was the sole investor. The goal was to reduce costs and time to market, while increasing secondary transferability.
More broadly, a growing number of enterprises have been experimenting with public blockchains, including big players, but issuing actual digital securities by a global investment bank is rare. In September, the Austrian government announced a pilot to use the ethereum blockchain to notarize the auction of a government bond worth $1.3 billion. Two months later, Spanish bank BBVA recorded a $150 million syndicated loan on ethereum, time-stamping data on a loan issued for Red Electrica, Spain’s national electrical grid operator. Among startups, back in 2017, Nivaura initiated a bond denominated in ether for the London-based luxury retail startup LuxDeco.
https://www.coindesk.com/french-lender-societe-generale-issues-112-million-bond-on-ethereum