Official Telegram groups from cryptocurrency Community.

Official QTUM Telegram Group.

Official Bitcoin Gold Telegram Group

Official Band Protocol cryptocurrency Chat

Raven Coin official Telegram chat group.

Hyperion launches a blockchain-based open mapping architecture to decentralize mapping.

Official group to chat about ZIL coin.
Zilliqa is a high-performance, high-security blockchain platform for enterprises and next-generation applications.

PLEASE NOTE: Official announcements & discussions now on Discord

Official Waves community.

With Bitcoin Diamond, you have access to a currency that is convenient and secure to use no matter where you live.

Discussion of Holochain and Holo's technology and ecosytem.

Hive - Fast. Scalable. Powerful. The Blockchain for Web 3.0

Ren project telegram discussion group.

Telegram group to discuss about Unibright.

Website: bitcoincash.org
Official group to talk about bitcoin cash only.

Official Nexo.io community.
Nexo - The World's First Instant Crypto-backed Loan