Which metadata can the cloud provider see?

#1

For example, if I use S3 as a cloud provider, they can’t see my data because it’s encrypted and they can’t change it because it’s signed. But what about the metadata?

  1. can S3 see from which IP address the data is written?
  2. can S3 see my blockstack ID?
  3. can S3 see who else is reading the data (by blockstack ID or IP address)?
    4 Can S3 see which blockstack applications I am using?
    I tried to figure it out by reading the whitepaper, but I didn’t manage.
    Thanks in advance
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