Thanks. I will check in the following days if operations remain "stable"

Presigned URLs are only used for authentication, which means they are generally safe to distribute publicly without revealing any secrets.

It is useful to note that pre-signed URLs will expose your account ID and bucket name to whoever gets a copy of the URL. Public bucket URLs do not contain the account ID or bucket name. Typically, you will not share pre-signed URLs directly with end users or browsers, as pre-signed URLs are used more for internal applications.