Looking for an Official WoB concerning Words of Radiance

[Kobold King he/him]

So, spoilers for the end of the book, as you might expect.

 

Basically, we all believe that the sword Nale gives to Szeth is Nightblood. This is considered common knowledge. I just need a little help for a wiki where I need to source this statement. So can anyone tell me if there's an exact WoB which confirms that Szeth's new puppy is in fact Nightblood?

[Moogle]

Never really explicitly confirmed ("Is Szeth's sword Nightblood?"), but it's assumed that it's Nightblood by Brandon in many questions. Here's a bunch:

 

 

Q:  Why is Vasher on Roshar? Is he trying to get back Nightblood?
A:  Kind of a RAFO. I won't go into all his reasons right now but there is one thing that was difficult to get on Nalthis that is much easier to get on Roshar. Going to Roshar solved that problem for him.

 

 

Q:  Something about why he put Nightblood in the Stormlight Archive?
A:  Nightblood and Vasher were in the original version of the Way of Kings before I wrote Warbreaker. Warbreaker in a way was actually introducing those two characters I'd already created.

 

 

Q:  Is Vasher trying to find Nightblood?
A:  Vasher misses Nightblood and feels responsible for him.

 

 

Q:  Would Vasher be able to use Stormlight in the same way that he can get Breath?
A:  That would not be immediately easy, but Stormlight could feed Nightblood.
Q:  Which is why Szeth can wield Nightblood?
A:  Eh, you'll have to see if … but yes. That could theoretically happen. You can use most of the magics on most of the planets to fuel the other magics, if you know how to do it, it is not easy.

 

 

Q:  If Nightblood is on Roshar, what happened to Vasher?
A:  Well, look really closely at this book.

 

All from this collection of WoBs.

[Kobold King he/him]

Thanks!