An adaption of drunken bishop to create small colour images from public bitcoin addresses.
See drunken-bishop for the ASCII based implementation as intended and the original whitepaper.
Public bitcoin addresses are not fast to distinqhish or compare. A couple of differences in the middle of the string when the strings are not side by side is easily overlooked.
Drunken Bishop provides a way to create an image which, like a hash, will look very different if even a small change is present.