Coming out of observe-and-absorb mode as I wouldn't mind discussing the pattern and technique with those who do make keris.
It's a form of feather pattern?
If I were to approximate the pamor it would be welding up a couple of hundred layers of straight laminate, square it up, hot cut almost all the way through with a thick wedge-shaped hot cutter to "smear" the pattern then weld up the cut again. Maybe inset a thin straight laminate core in the split before welding up, drawing-out and forging to shape? The pattern converges at the tip but is not as "organized" as from the base up until the last few inches of the point.
It's also looks very aggressively etched for topography but not "washed" for contrast like some of the other keris I see. Perhaps the contast steel may not be nickle bearing.
I am still learning about the finer points of keris, but I can appreciate your keris from a bladesmith's point of view. It is a lot of work to create this.