Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"P",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"524031f4-e9df-373b-9c04-23863fb2fd9c",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYTBhNzk4OWI1ZDZlNjIxYTEyMWVlZGFlNmY0NzZkMzUxOTNjOTdjMWE3Y2I4ZWNkNDM2MjJhNDg1ZGMyZTkxMiJ9fX0="}]}}}

API Usage

GET https://headdb.org/api/head/524031f4-e9df-373b-9c04-23863fb2fd9c

{
  "name": "P",
  "uuid": "524031f4-e9df-373b-9c04-23863fb2fd9c",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYTBhNzk4OWI1ZDZlNjIxYTEyMWVlZGFlNmY0NzZkMzUxOTNjOTdjMWE3Y2I4ZWNkNDM2MjJhNDg1ZGMyZTkxMiJ9fX0=",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/a0a7989b5d6e621a121eedae6f476d35193c97c1a7cb8ecd43622a485dc2e912"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"P\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"524031f4-e9df-373b-9c04-23863fb2fd9c\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvYTBhNzk4OWI1ZDZlNjIxYTEyMWVlZGFlNmY0NzZkMzUxOTNjOTdjMWE3Y2I4ZWNkNDM2MjJhNDg1ZGMyZTkxMiJ9fX0=\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/524031f4-e9df-373b-9c04-23863fb2fd9c