If you mined a coin that nobody alse can see (no block explorer) or receive (no transactions "yet"), did you really mine a coin?

Lots of empty promises on their webpage, their FAQ is eye-opening if you read between the lines.
Pi launched Phase 1 of the project on 3/14/2019 (Pi Day). During Phase 1, your balances are being recorded with a guarantee of being honored when Pi transitions to mainnet (Phase 3). Transfers of Pi are restricted until we reach mainnet to prevent bad actors from accumulating Pi from fake accounts. For example, a bad actor could mine from fake accounts, transfer the Pi to a legitimate account, and then pass through Pi’s account verification process despite their illicit gains. We are still refining the exact development timeline for the project. For more details, please refer to the Roadmap section of our white paper.
No keys, no testnet, just some numbers they pulled out of their arse.