[bootlooped]

> When is the last time that significant source material has been provided to some other, competing transparency organization?

The Panama Papers and the Paradise Papers were both released to the ICIJ. I don't think you would consider them a transparency organization though.

Considering only a "transparency organization" as Wikileaks competition is wrong though I think. Wikileaks' competitors are conventional producers of journalism, they just have different approaches to how the information will be presented.