How do you confirm that you are the developer of the site?

Question

Freelance

Theoretically, let's say I have a number of ready-made and long-term web projects, but my contacts and copyrights are nowhere to be found on the pages, and the orders themselves came from outside, and not from all kinds of freelance sites. There are no public repositories. How can I prove in my, for example, online portfolio that I am the developer of this resource?
Your methods are interesting, or maybe someone knows some service for these purposes.

Answer 1

humanstxt.org

Answer 2

To be honest, there is no way, usually they don’t ask for confirmation

Answer 3

I have sorts of all projects. So my code speaks for itself.

Answer 4

When I subcontract and sign an NDA, no way. In other cases humans.txt or even a logo in the footer. No customer has yet tried to remove them, but even if someone tries, I have repositories on bitbucket that reflect the entire history of development, and my commit, tagged as "v1.0", was made the day before the release site on the network.

Answer 5

I give my word of honor.

Answer 6

This issue should be discussed with the customer. If he agrees, then put a link at the bottom of the start page. If you do not agree, then do not shove into his code what he did not ask for.
Ask for a little more money without a link, make a small discount with a link.

Answer 7

Except how to contact the contacts on the site and ask in any way. When I had suspicions and I contacted, I was always convinced that it was others who made the site.

Answer 8

but my contacts and copyrights are not present anywhere on the pages

and why? If it is impossible to shine on the page, make the commented code inside. Although there are projects where DNA forbids "bragging about the project", I have more than 50% of them. But then you just go for it meaningfully by signing the agreement. I usually set a different price tag to justify the losses, but in large projects this is almost always the case. Especially if there is a top company customer, and a contractor hires you.

Answer 9

The source code is your portfolio and your evidence, even if you work for a studio, keep at least part of the source code with you, unless, of course, you work on any WordPress.

Answer 10

Such questions do not have to be proven to anyone.
You are making a demo site to show a potential customer that you are a PHP developer.
The customer likes the site, but he needs three things from you:
1) an acceptable cost
2) acceptable terms
3) so that you do exactly what he wants
The rest of the customer is not really interested.
On these three points, you, as a developer, are working - reducing costs, terms and creating a toolkit that allows you to implement the most daring ideas in the industry. After all, you can make good money, right?
If you can do in a day what competitors will do for at least a week, you can offer a period of a week, but 5 times cheaper.
Or at an average price, but per day.

Answer 11

I usually just indicate in the HTML code of the template at the end of the comment who is the developer, who is the designer, who is the layout designer, as well as the date of creation. If the customer wants to rub the copyrights, then he will rub them from anywhere, at least he will hire someone else to rub them for him. This is on his conscience.