The referendum to open a init a hrmp open channel request to HydraDX already passed: https://zeitgeist.subsquare.io/democracy/referendum/25

The XCM was executed: https://zeitgeist.subscan.io/xcm_message/polkadot-38b400483edbc6df7afb9ca87f1319f891f72846

However, although the message was sent to Polkadot and execute, the channel was not opened. This is due to the circumstance the parachain sovereign account of Zeitgeist on Polkadot had not enough funds to reserve for opening a channel. The account is now funded appropriately and the XCM can be resend.