Script we used to validate angles for the private key, as well extract characters out

privatekey.py

import math
from PIL import Image, ImageDraw, ImageFont

height = 8192
width = 8192

im = Image.open('pkey2.png')
draw = ImageDraw.Draw(im)
font = ImageFont.truetype("verdana.ttf", 13)

prevSet = [-188, 184]
prevSetX, prevSetY = [3474,7870]
set = []

sets = [[-188,184],[-160,156],[-188,208],[-180,168],[-176,208],[-204,188],[-192,208],[-204,188],[-164,180],[-192,188],[-208,204],[-172,208],[-160,176],[-164,160],[-208,204],[-160,208],[-172,180],[-180,208],[-164,164],[-172,164],[-208,188],[-156,208],[-204,176],[-172,208],[-188,168],[-160,208],[-204,184],[-164,208],[-172,184],[-208,204],[-168,208],[-204,188],[-168,188],[-208,204],[-188,188],[-160,176],[-184,208],[-180,172],[-168,192],[-208,204],[-184,188],[-184,188],[-208,180],[-208,204],[-164,208],[-184,184],[-192,208],[-204,180],[-188,156],[-208,188],[-160,156],[-208,204],[-188,172],[-184,172],[-208,172],[-176,208],[-188,184],[-172,176],[-184,208],[-204,188],[-164,168],[-184,164],[-208,176],[-172,180],[-180,208],[-184,176],[-168,208],[-204,168],[-208,180],[-208,204],[-180,180],[-208,188],[-172,188],[-168,208],[-204,188],[-192,160],[-156,208],[-188,192],[-176,164],[-208,204],[-184,160],[-164,208],[-180,164],[-188,208],[-204,184],[-176,208],[-176,208],[-204,188],[-164,172],[-160,208],[-176,172],[-192,156],[-208,204],[-188,208],[-180,180],[-176,208],[-204,176],[-208,180],[-160,208],[-204,172],[-188,208],[-180,208],[-204,184],[-192,188],[-172,208],[-188,172],[-192,168]]

colors = ["green","purple","yellow","orange","pink","blue"]

out = []

for idx,set in enumerate(sets):

    fail = False

    setX = prevSetX + set[0]
    setY = prevSetY - set[1]

    charX = int((set[0]/4)+96)
    charY = int(-1*(set[1]/4)+96)

    out.append(chr(charX))
    out.append(chr(charY))

    finalSetX = setX % 8192
    finalSetY = setY % 8192

    if finalSetX != setX or finalSetY != setY:

        if finalSetY != setY:
    
            if finalSetY < setY:
                finalSetY = finalSetY-6
            else:
                finalSetY = finalSetY+6
        else:
            if finalSetX < setX:
                finalSetX = finalSetX-6
            else:
                finalSetX = finalSetX+6

        setX = finalSetX
        setY = finalSetY

    if fail:
        textBorderColor = "red"
        textColor = "white"
    else:
        textBorderColor = "green"
        textColor = "white"

    lineColor = colors[idx%len(colors)]
    
    draw.line((prevSetX, prevSetY, setX, setY), fill=lineColor, width=2)

    text = "{0} ({1}, {2})".format(str(idx), setX, setY)

    draw.text((setX-1, setY-1), text, font=font, fill=textBorderColor)
    draw.text((setX+1, setY-1), text, font=font, fill=textBorderColor)
    draw.text((setX-1, setY+1), text, font=font, fill=textBorderColor)
    draw.text((setX+1, setY+1), text, font=font, fill=textBorderColor)
    draw.text((setX,setY), text, font = font, fill=textColor)

    draw.line((setX, setY, setX, setY), fill="purple", width=1)

    prevSetX, prevSetY = setX, setY

im.save('test.png')

print("".join(out))