Ensure the text is in a standard font (like Arial or Times New Roman, size 12) and physically or digitally signed. 2. Social Media & Creative Portfolios
Depending on your goal, here is a detailed guide on how to use this declaration effectively in different contexts: 1. Academic & Formal Submissions
When sharing art, photography, or writing online, using this phrase helps protect your intellectual property from being reposted without credit.
You must explicitly state your full name, registration number, and the title of the work.
In Portuguese-speaking academic institutions (like those in Brazil or Portugal), you are often required to include a (Declaration of Authorship) in your thesis or final project (TCC).
For original poetry or reflections, adding "Este texto é de minha autoria" clearly signals to followers that the content is original.
Use platforms like ORCID to link your digital identity to your work, which is a standard requirement for many formal Portuguese submissions. Summary Checklist for a Valid Declaration
If you are reposting an old post that you originally wrote, you can clarify: "Este post não é novo... mas é de minha autoria" . 3. Professional Freelancing & Licensing

WARNING The following website, including all webpages, links, images and videos, display sexually explicit material. Only consenting adults are authorized beyond this page. If you are a minor (under the age of 18 years old or 21 years old where 18 isn't the legal age of majority), if sexually explicit material offends you or if it's illegal to view such material in your community, or if you disagree with the following statements in any way, you MUST leave by clicking EXIT below. By ENTERING this site, you irrevocably agree to these statements: You are an adult in your community and are at least 18 years old (21 in those communities where required). You will not expose, or allow others to expose minors to the sexually explicit content contained on this website. You believe that sexually explicit material is not offensive or obscene, and affirm that sexually explicit material is not deemed to be obscene or illegal in the community in which you will view these materials. You further affirm that you wish to view such materials and that no other person has coerced you into doing so. You will use the material available on this website for your own personal use and will not sell, distribute, give or make available the content on this website to anyone. You will take the appropriate steps in order to make sure no minor is able to view the content available on this site. You understand that if you disagree with any of the prior statements, you are not permitted to enter this website and to view its contents. By entering this website, you acknowledge that you have read this agreement, understood it and agree to be bound by it.