UBS, PostFinance, Sygnum, Raiffeisen, Zürcher Kantonalbank, Banque Cantonale Vaudoise and Swiss Stablecoin AG have launched a sandbox to test use cases for a Swiss franc stablecoin in Switzerland. Announced on Wednesday, the initiative will allow participating banks to test selected fanc stablecoin use cases in what the partners described as a secure digital live environment…