1335 GMT - Cross-border payments are currently the clearest use case for blockchain-based securities, says Ava Labs' head of institutional finance. The move to blockchain will grow exponentially in some asset classes, Mike Manning says at the Digital Assets Week conference in London. "By 2030 there will be some asset classes that are majority digital." Trading in assets in traditional venues and on blockchain will increasingly converge, Manning says. For investors, the priority is gaining price exposure to an underlying asset--the technology via which they invest in the asset is less important, Manning adds.