Ouch. I'm sorry to hear that you lost almost 2 BTC. But bitcoin is irreversible, so I doubt that you can get it back. Here's some info about the website from https://www.whois.net/.

Domain Name: PAPERADDRESS.ORG
Registry Domain ID: D402200000003969130-LROR
Registrar WHOIS Server: whois.namecheap.com
Registrar URL: http://www.namecheap.com
Updated Date: 2017-12-19T03:45:37Z
Creation Date: 2017-10-19T21:56:50Z
Registry Expiry Date: 2019-10-19T21:56:50Z
Registrar Registration Expiration Date:
Registrar: NameCheap, Inc.
Registrar IANA ID: 1068
Registrar Abuse Contact Email: abuse@namecheap.com
Registrar Abuse Contact Phone: +1.6613102107
Reseller:
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Registry Registrant ID: C198256189-LROR
Registrant Name: WhoisGuard Protected
Registrant Organization: WhoisGuard, Inc.
Registrant Street: P.O. Box 0823-03411
Registrant City: Panama
Registrant State/Province: Panama
Registrant Postal Code:
Registrant Country: PA
Registrant Phone: +507.8365503
Registrant Phone Ext:
Registrant Fax: +51.17057182
Registrant Fax Ext:
Registrant Email: 0161a061df7f44439f430ad8212875df.protect@whoisguard.com
Registry Admin ID: C198256188-LROR
Admin Name: WhoisGuard Protected
Admin Organization: WhoisGuard, Inc.

Hope it helps.