The definition of "whistleblower" is someone who comes forward with evidence of corruption.
If you don't come forward, you're not really a whistleblower. Now, Schiff is hoping Trump's call manuscript will suffice.
It won't.
https://www.politico.com/news/2019/1...t-probe-045910Schiff (D-Calif.) said the whistleblower’s testimony might not be needed given that a rough transcript of the call with Trump asking Ukrainian President Volodymyr Zelensky for a “favor” — the centerpiece of the whistleblower’s complaint — is public. In addition, lawmakers have a collected a tranche of damning text messages and witness testimony related to the scandal in the past two weeks.
“Our primary interest right now is making sure that that person is protected. Indeed, now there’s more than one whistleblower, that they are protected,” Schiff said on CBS’ “Face the Nation“ on Sunday.