Kraken Bitcoin Bank Charter: The following letter came out from the Kraken Exchange today:Greetings,We are thrilled to announce that the State of Wyoming has approved Kraken’s application to form the world’s first Special Purpose Depository Institution (SPDI), and has granted a charter to Wyoming’s newest state-chartered bank, tentatively called “Kraken Financial.”Headquartered in Cheyenne, Wyoming, Kraken…