When the price of Bitcoin drops a lot. Then I buy bitcoins with some of my savings. And tell my friends to buy some bitcoins too. A few of my friends bought some bitcoins with me.
Alright just make it simple, just post your Bitcoin address and sign a message to prove your ownership, otherwise you're lying and not telling the truth. The recent dump was at March 10, 2023 and November 10, 2022 - Early January, 2023, so must be bought Bitcoin at those date where Bitcoin was declining.
There's no any rumor or news about the upcoming Bitcoin adoption, I think everyone also surprised to see Bitcoin price suddenly increase since it's unpredictable.