Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"6",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"4dbf76b2-d67c-3034-a49d-4a5f3fed9e2a",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZjMzMWE2YTZmY2Q2OTk1YjYyMDg4ZDM1M2JmYjY4ZDliODlhZTI1ODMyNWNhZjNmMjg4NjQ2NGY1NGE3MzI5In19fQ=="}]}}}

API Usage

GET https://headdb.org/api/head/4dbf76b2-d67c-3034-a49d-4a5f3fed9e2a

{
  "name": "6",
  "uuid": "4dbf76b2-d67c-3034-a49d-4a5f3fed9e2a",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZjMzMWE2YTZmY2Q2OTk1YjYyMDg4ZDM1M2JmYjY4ZDliODlhZTI1ODMyNWNhZjNmMjg4NjQ2NGY1NGE3MzI5In19fQ==",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/f331a6a6fcd6995b62088d353bfb68d9b89ae258325caf3f2886464f54a7329"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"6\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"4dbf76b2-d67c-3034-a49d-4a5f3fed9e2a\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZjMzMWE2YTZmY2Q2OTk1YjYyMDg4ZDM1M2JmYjY4ZDliODlhZTI1ODMyNWNhZjNmMjg4NjQ2NGY1NGE3MzI5In19fQ==\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/4dbf76b2-d67c-3034-a49d-4a5f3fed9e2a