I'm not sure there was ever much verifying before websites existed. Just less fraud.
Back in the NES days Tengen called the United States Copyright Office and told them they needed the technical details of the NES lockout chip to defend themselves in a copyright lawsuit. The Copyright Office faxed over the requested information. Except it was social engineering, there was no copyright lawsuit. Tengen used that proprietary information to build their own cartridges without paying the NES licences costs.
Back in the NES days Tengen called the United States Copyright Office and told them they needed the technical details of the NES lockout chip to defend themselves in a copyright lawsuit. The Copyright Office faxed over the requested information. Except it was social engineering, there was no copyright lawsuit. Tengen used that proprietary information to build their own cartridges without paying the NES licences costs.