As you all know by now "You can only get a Pixel on Verizon". Actually that isn't true at all, but Verizon would love for you to think that. You can actually get the PIxel unlocked which works with any other carrier directly from Google. The unlocked version from Google allows you to unlock your bootloader out of the box. The Verizon version on the other hand was meant to have it's bootloader locked down tight.
HTC has had a past of being pretty loose when it comes to security and locking down bootloaders. Beaups and Jcase of theroot.ninja, the team behind Sunshine S-Off method, has already released their method of bootloader unlocking for the Verizon Pixel and Pixel XL. Everything Everywhere is a UK based carrier who has also decided to lock down their bootloader. This method will work on that version of the Pixel as well. You can find full instructions and file downloads at the link below.
via TheRoot.Ninja