Disclaimer: OL DEX is no longer supporting the OPEN asset in any ways possible, whether gateways, nodes, support or anything else as per announcement on April 25, 2020, named "OL DEX is closing all activities". Closing is based on technical challenges, economy, and an increasingly strict legal environment.
It is therefore at your own risk now and in the future to trade on any OPEN asset related markets.
Ownership of asset is changed to having no owners: null-account