Nice suggestions, although I'd say that Telegram groups are not really the best place to talk about bitcoin p2p transfers. Telegram chats are public and you never know who's in there.
What would you say the risk is if somebody nefarious knew I sold $5000 worth of Bitcoin on a specific day? Looking at the group, they would not know who I sold it to, or where we met, or what the specifics of the deal were
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