Details - HeadDB

Warning: The UUIDs are not real.

Command

/give @p skull 1 3 {display:{Name:"H",Lore:["Skull from HeadDB.org"]},SkullOwner:{Id:"38e35257-a4e6-320c-bd6b-cdca84860ab8",Properties:{textures:[{Value:"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZjhjNThjNTA5MDM0NjE3YmY4MWVlMGRiOWJlMGJhM2U4NWNhMTU1NjgxNjM5MTRjODc2NjllZGIyZmQ3In19fQ=="}]}}}

API Usage

GET https://headdb.org/api/head/38e35257-a4e6-320c-bd6b-cdca84860ab8

{
  "name": "H",
  "uuid": "38e35257-a4e6-320c-bd6b-cdca84860ab8",
  "value": "eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZjhjNThjNTA5MDM0NjE3YmY4MWVlMGRiOWJlMGJhM2U4NWNhMTU1NjgxNjM5MTRjODc2NjllZGIyZmQ3In19fQ==",
  "valueDecoded": {
    "textures": {
      "SKIN": {
        "url": "http://textures.minecraft.net/texture/f8c58c509034617bf81ee0db9be0ba3e85ca15568163914c87669edb2fd7"
      }
    }
  },
  "command": "/give @p skull 1 3 {display:{Name:\"H\",Lore:[\"Skull from HeadDB.org\"]},SkullOwner:{Id:\"38e35257-a4e6-320c-bd6b-cdca84860ab8\",Properties:{textures:[{Value:\"eyJ0ZXh0dXJlcyI6eyJTS0lOIjp7InVybCI6Imh0dHA6Ly90ZXh0dXJlcy5taW5lY3JhZnQubmV0L3RleHR1cmUvZjhjNThjNTA5MDM0NjE3YmY4MWVlMGRiOWJlMGJhM2U4NWNhMTU1NjgxNjM5MTRjODc2NjllZGIyZmQ3In19fQ==\"}]}}}"
}

Minecraft Head Database

GET https://headdb.org/api/head/38e35257-a4e6-320c-bd6b-cdca84860ab8