Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"Y",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"b3bbd0a0-327d-3b7b-b6e5-7220bc92bcc5",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZDljMWQyOWEzOGJjZjExM2I3ZThjMzRlMTQ4YTc5ZjlmZTQxZWRmNDFhYThiMWRlODczYmIxZDQzM2IzODYxIn19fQ=="}]}}}

API Usage

GET https://headdb.org/api/head/b3bbd0a0-327d-3b7b-b6e5-7220bc92bcc5

{
  "name": "Y",
  "uuid": "b3bbd0a0-327d-3b7b-b6e5-7220bc92bcc5",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZDljMWQyOWEzOGJjZjExM2I3ZThjMzRlMTQ4YTc5ZjlmZTQxZWRmNDFhYThiMWRlODczYmIxZDQzM2IzODYxIn19fQ==",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/d9c1d29a38bcf113b7e8c34e148a79f9fe41edf41aa8b1de873bb1d433b3861"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"Y\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"b3bbd0a0-327d-3b7b-b6e5-7220bc92bcc5\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZDljMWQyOWEzOGJjZjExM2I3ZThjMzRlMTQ4YTc5ZjlmZTQxZWRmNDFhYThiMWRlODczYmIxZDQzM2IzODYxIn19fQ==\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/b3bbd0a0-327d-3b7b-b6e5-7220bc92bcc5