The proof of concept enabled devices to act autonomously and produce accurate information to support trade document exchange, the companies said. Vodafone's Digital Asset Broker (DAB) has demonstrated blockchain can be used for trade, according to a Tuesday announcement. The telecom giant ran a proof of concept on trade document transfer with Web3 services platform Chainlink Labs, Sumitomo Corporation and InnoWave to address "longstanding challenges in the $32 trillion global trade ecosy...