That's how we use S3 in Peergos (built on IPFS). You can get S3 to verify the sha256 of a block on write and reject the write if it doesn't match. This means ma

That's how we use S3 in Peergos (built on IPFS). You can get S3 to verify the sha256 of a block on write and reject the write if it doesn't match. This means many mutually untrusting users can all write to the same bucket at the same time with no possibility for conflict. We talk about this more here: https://peergos.org/posts/direct-s3 https://peergos.org/posts/direct-s3