Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"W",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"0fdc0eeb-44fd-30a5-8536-6c349dc4115c",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNjdlMTY1YzNlZGM1NTQxZDQ2NTRjNDcyODg3MWU2OTA4ZjYxM2ZjMGVjNDZlODIzYzk2ZWFjODJhYzYyZTYyIn19fQ=="}]}}}

API Usage

GET https://headdb.org/api/head/0fdc0eeb-44fd-30a5-8536-6c349dc4115c

{
  "name": "W",
  "uuid": "0fdc0eeb-44fd-30a5-8536-6c349dc4115c",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNjdlMTY1YzNlZGM1NTQxZDQ2NTRjNDcyODg3MWU2OTA4ZjYxM2ZjMGVjNDZlODIzYzk2ZWFjODJhYzYyZTYyIn19fQ==",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/67e165c3edc5541d4654c4728871e6908f613fc0ec46e823c96eac82ac62e62"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"W\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"0fdc0eeb-44fd-30a5-8536-6c349dc4115c\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvNjdlMTY1YzNlZGM1NTQxZDQ2NTRjNDcyODg3MWU2OTA4ZjYxM2ZjMGVjNDZlODIzYzk2ZWFjODJhYzYyZTYyIn19fQ==\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/0fdc0eeb-44fd-30a5-8536-6c349dc4115c