OK here's a few Europe side of the water....
1). Blockchain Days, Mallorca, Spain. March 22, 23, 24
http://mallorcablockchaindays.com/2). Coinfest, Manchester, UK. April 4, 5, 6.
https://coinfestuk.org/CF2019/3). Blockchain Hotel, Essen, Germany. May 30th – 31st
https://www.blockchainhotel.de/conf/4). Honey Badger, Riga, Latvia. Sept 14-15th
https://bh2019.hodlhodl.com/5). Transylvania Crypto Conference, Cluj Napoca, Romania 3-6 OCT
http://tcconf.ro/6). Hackers Congress PP, Prague, Czech Republic. Oct 4th - 6th
https://opt-out.hcpp.cz/Updated with Links.
Note, some lead to last year event as they're still a way off in the year so havent got around to updating for this years. Keep an eye on them
All come recommended and will feature some excellent speakers and talks from Privacy, Cryptography, Art & Music {Blockchain COA}, Trading and so much more.
See you there
Viz