eth/backend.go
func (b *backendInstance) PTCAddress() common.Address {
	return common.HexToAddress(b.cfg.Contract.PTCAddrHex)
}
func (b *backendInstance) PTCAddress() common.Address {
	return common.HexToAddress(b.cfg.Contract.PTCAddrHex)
}
// PTCAddress returns Privatix token contract address.