Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"U",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"1ab01a59-42c8-34e9-97f0-fbb0571f1cbe",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNTVhNmUzYWU1YWU2MjU5MjM1MjQ4MzhmYWM5ZmVmNWI0MjUyN2Y1MDI3YzljYTE0OWU2YzIwNzc5MmViIn19fQ=="}]}}}

API Usage

GET https://headdb.org/api/head/1ab01a59-42c8-34e9-97f0-fbb0571f1cbe

{
  "name": "U",
  "uuid": "1ab01a59-42c8-34e9-97f0-fbb0571f1cbe",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNTVhNmUzYWU1YWU2MjU5MjM1MjQ4MzhmYWM5ZmVmNWI0MjUyN2Y1MDI3YzljYTE0OWU2YzIwNzc5MmViIn19fQ==",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/55a6e3ae5ae625923524838fac9fef5b42527f5027c9ca149e6c207792eb"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"U\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"1ab01a59-42c8-34e9-97f0-fbb0571f1cbe\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNTVhNmUzYWU1YWU2MjU5MjM1MjQ4MzhmYWM5ZmVmNWI0MjUyN2Y1MDI3YzljYTE0OWU2YzIwNzc5MmViIn19fQ==\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/1ab01a59-42c8-34e9-97f0-fbb0571f1cbe