ALPHARETTA, Ga.--(BUSINESS WIRE)--Bakkt Holdings, Inc. (“Bakkt”) (NYSE: BKKT) today announced that the company is available now as a key agent for Unchained’s enterprise collaborative custody product. This collaborative model helps bitcoin holders increase security when safeguarding their assets through the use of a vault secured by multiple institutional key agents. As a part of the network, Bakkt will serve as an institutional signatory for Unchained customers' multi-signature vaults. “ Secure and regulat ...