A dot in column x, counting from left, and row y, counting from the top, means that key number x has signed key number y. A red dot means a signature of level 0 or 1, a blue dot level 2 and a green level 3. Signatures which are not on the primary User ID are represented by a darker dot.

This image has been scaled 8 times from 3016x3016 to 377x377. Each row and each column in the image represents 8 actual OpenPGP keys. A gamma value of 15 was used to keep the image from being too dark to be visible.

Wherever you hold your mouse pointer, you might see in the status bar the MSD and (spam protected) name of the key that is signed by the the signature you are pointing at. Or you might not. It depends on your browser. This web page has a client side image map with key information masking as URLs. It works for me in Mozilla based browsers but your mileage may vary. No ECMAScript was armed during the production of this web page.

Too see the signing key instead of signed key, click here. Since this image is scaled, you cannot see all keys this way. Only the key being closest to the middle of the row is shown.

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