I'm not taking part because the math lingo is too intimidating.

address: 187dAwrLyuaoVHG7aTk6zjNRi3f8xVMH2j

Er, maybe I'm on the wrong track.  In that format, what I got is this:

0x3067c24761f46c1f411ee50a802f9451d04ce566e6c6bca2d0c0d42ba448e5969ca5c2298fc8a 4

which is 312 bits, a bit overqualified to be a private key.

Heh, not OP.

Yeah, though isn't it suspicious that the dogecoin symbol is there?  Maybe we're not at the last step and there's something to do with dogecoin?

Here's some quick code I was trying out:



import hashlib, binascii
import sys

__b62chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
__b62base = len(__b62chars)



def b62decode(v, length):
  """ decode v into a string of len bytes
  """
  long_value = 0
  for (i, c) in enumerate(v[::-1]):
    long_value += __b62chars.find(c) * (__b62base**i)

  result = bytes()
  while long_value >= 256:
    div, mod = divmod(long_value, 256)
    result = chr(mod) + result
    long_value = div
  result = chr(long_value) + result

  nPad = 0
  for c in v:
    if c == __b62chars[0]: nPad += 1
    else: break

  result = chr(0)*nPad + result
  if length is not None and len(result) != length:
    return None

  return result


bytes = b62decode('z69JZqlJn862D1ndx7oLVEMmVOlP1zewEeUCrsI7Roahzpeny7PA', None)

for byte in bytes:
   # sys.stdout.write("{:02x} ".format(ord(byte)))
   sys.stdout.write("{:08b} ".format(ord(byte)))

That's just using each character as a number.  Did you try converting it to the binary representation?  for example, 11 in base-62 equals the number 63

I unfortunately have to leave right now, but my prediction is that if you took z69JZqlJn862D1ndx7oLVEMmV0lP1zewEeUCrsI7Roahzpeny7P and converted it to the binary representation, assuming that's base62, you'd get a dogecoin private key.

Maybe it's a form of base-62 encoding like this:

new encoding: 0  1  2  3  4  5  6  7  8  9  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  a  b  c  d  e  f  g  h  i  j  k  l  m  n  o  p  q  r  s  t  u  v  w  x  y  z
decimal:      0  1  2  3  4  5  6  7  8  9  10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61