Manipulationsabgesichertes value or security product and method for verifying the authenticity of the value or security product manipulationsabgesicherten

For detecting a manipulation of a value or security product 100, such as a value or security document, the value or security product core / shell particles is proposed to add 200 whose casing is susceptible to damage or destroyed 210 by mechanical action, so that at least one in the core / shell particles 200 contained first chemical substance is released from the core / shell particles 200 250th Upon release, the first chemical substance 250 calls alone and / or due to chemical interaction with at least one in the vicinity of the core / shell particles 200 that are available the second chemical substance 260 a visually perceptible impression produced.