That would take nothing to implement. Services like Truecaller already do live caller ID against databases on iOS / Android. All it would take is a sensible register of verified numbers
Several of the bank scammers had their profile verified as the bank in the Truecaller[1].
[1] https://xcancel.com/Abishek_Muthian/status/18063480222902113...
Several of the bank scammers had their profile verified as the bank in the Truecaller[1].
[1] https://xcancel.com/Abishek_Muthian/status/18063480222902113...