I provide blockchain/bootstrap for Bitsend updated with the last blocks at 468625 (Tuesday, 1st May, 2018). my bootstrap has no virusses and 100% clean, you can check it after downloading.
You have done a very good job with this bootstrap. I did a translation of your post for the german Bitsend thread.
https://bitcointalk.org/index.php?topic=1412235.msg36122550#msg36122550Updated every hour.