Joining a public Telegram group carries no risk to your wallet or device by itself. The real risk in crypto groups is social engineering — unsolicited DMs from fake "admins" offering deals after you join. Blockchain Coal is listed in our directory, but the rule applies everywhere: never respond to DMs from unknown accounts after joining any crypto group. Your phone number is never visible to other members unless you've made it public in your Telegram privacy settings.

No. Telegram never notifies your contacts when you join or leave a group. Other members inside Blockchain Coal can see your username only if you post — your membership is not visible to anyone outside the group.

Blockchain Coal is a Telegram group for anyone interested in blockchain and cryptocurrency. Members can expect regular discussions on ai and market, along with intelligence to explore.

We verify every listing is publicly accessible, has a minimum member count, and exclude groups Telegram has marked as harmful. Blockchain Coal currently has 388 members, last verified 24 May 2026. If you've joined Blockchain Coal and noticed something suspicious — a review on this page helps others stay safe.