Why We Love インスタ 保存 (And You Should, Too!)
https://sethoqpp.bloggersdelight.dk/2024/02/28/14-questions-you-might-be-afraid-to-ask-about-insuta-bao-cun/
Moreover, it can be learned that there are also some registrar companies who need a notarized sort or other formal recognition files, but these are typically just according to the specified county the registrants