Windows 8/6.1.7700.0.winmain.100122-1900

Windows 8 build 7700 (with a buildtag of 6.1.7700.0.winmain.100122-1900) is the earliest leaked build of Windows 8.

Keys

 * Home Basic: YGFVB-QTFXQ-3H233-PTWTJ-YRYRV
 * Home Premium: RHPQ2-RMFJH-74XYM-BH4JX-XM76F
 * Professional: HYF8J-CVRMY-CM74G-RPHKF-PW487
 * Enterprise: H7X92-3VPBB-Q799D-Y6JJ3-86WC6
 * Ultimate: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV