It absolutely is. Once recorded, it becomes prior art. The disclosure would be the "first to file" event in this case. First to file would actually prevent som

It absolutely is. Once recorded, it becomes prior art. The disclosure would be the "first to file" event in this case. First to file would actually prevent someone else from later coming along and claiming that despite your publishing of the technology, they were the first to have the idea so should get a patent anyway.