You can verify whether the Dikalon children's bicycle is authentic through the following methods:

1. Check the trademark: The authentic trademark is thick and attached to the front tube of the frame, with a strong three-dimensional shape. The paint color is pure and even, the gloss is good, the assembly is tight and symmetrical, and there is a Decaron stamp mark in the middle of the joint. The counterfeit trademarks are made of thin materials, have poor three-dimensionality, uneven paint application, and poor gloss. The appearance is the same as the permanent one, but the pattern is a counterfeit and is not the Decathlon stamp mark.

2. Check product information: Visit Decathlon's official website, search for "children's bicycles", find related products, click on product details to view product details, such as model, size, material, etc. Record the product information, then search for "authentic or fake Decathlon children's bicycles" to view relevant reviews and feedback from other users.

The above information is for reference only. If you are purchasing a second-hand product or have any questions, it is recommended that you contact the merchant or manufacturer for consultation.