Precious metal fractal pattern-based PUF anti-counterfeit label manufacturing method and anti-counterfeit label

The invention discloses a PUF anti-counterfeit label manufacturing method based on a precious metal fractal pattern. The PUF anti-counterfeit label manufacturing method comprises the following steps that S1, a precious metal film pattern is prepared on a substrate; s2, the precious metal thin film is subjected to instability cracking to form a network-shaped random fractal structure through high-temperature annealing, and a physical feature image is obtained; and S3, roughening the surface of the precious metal network-shaped random fractal structure through an etching technology, and adding Raman probe molecules to obtain a Raman spectrum pattern orthogonal to the physical characteristic pattern as a secondary anti-counterfeiting mark. The invention also discloses an anti-counterfeit label prepared by the manufacturing method of the PUF anti-counterfeit label based on the noble metal fractal pattern. By the adoption of the PUF anti-counterfeit label manufacturing method based on the precious metal fractal pa