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This isn't even remotely similar to bittorrent, it's more akin to rapidshare et al. You're completely at the whim of a 3rd party, Dropbox. And I'm pretty sure something like this would violate whatever contract you agree to when signing up.

So no, not a successor to torrents.




I'm pretty sure I've seen stuff suggesting that Dropbox occasionally purges copyrighted files from its system (which is made super-easy by the hash fingerprinting system that it uses to deduplicate storage) so I agree that this is not likely to meet most people's use case for torrents; i.e. stealing copyrighted music and films.

I wonder why the github repo has been taken down.

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Arash (the CTO) asked me to, in a really civil way. So I decided to respect his wish and take down the repository.

Myself, I really regarded dropship as a nice feature. As Dropbox had implemented the great idea of putting all humanity's data in one big hash-addressable vat, sharing is a logical extension. If you would cache the popular blocks locally (dropbox already does this in a way with LAN P2P), global data distribution would be pretty much a solved problem.

Obviously, this affects legal and illegal files in the same way. It's really a shame that people are still so obsessed with the illegal applications, that they become blinded to how useful this is for legal ones.

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Did he give any rationale for his request?

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Yes, as I kind of hinted at in my post, the main reason is that they don't want the stigma that is associated with file sharing.

Even though there is a lot of (social) legal sharing going on between users, the focus is always on illegal sharing. He has a point there, though I think it's a pity.

IMO it's not even that suited to piracy, as the deduplication means that they can find everyone that has a file! Torrents are way better for that.

The principles of dropship could be used for sharing photos, videos, public datasets, git-like source control, or even as building block for wiki-like distributed databases. The possibilities are endless when every file can be called up with just its hash.

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There is a way around this. Charge the person sharing the file a certain amount of money after a certain bandwidth (rather than the person downloading the file). This would virtually prevent large scale piracy without preventing many other usages.

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I've been sending TV shows to friends privately since I started using dropbox. Never seen a takedown. As long as they don't get a dmca, I doubt they care.

If they did how hard would it be to pad media files with some salt to break hashing anyways? Not hard at all...

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I've been doing the same, but on a very small scale. Mostly sending a funny episode of some show to a group of friends or occasionally sending a movie to my folks. I don't doubt that if I was mass distributing these files it would attract attention.

Also, wouldn't breaking the hash nullify one of the ostensible advantages of this method (the de-dupe of the stored files)? If the goal is solving global file distribution, making each copy of every originally-identical file unique - and therefore requiring n times the storage - isn't a viable solution.

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I think that's a very poor business choice by Arash. Third party developers need freedom.

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They don't want their brand associated with piracy. According to the developer, they have resolved the issue in a civil way. I don't see a problem here.

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Think of all the bandwidth charges Dropbox would be incurring if this took off. They'd have to make the service more expensive for everyone.

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How do they decide which copyrighted content to delete? The files in the Dropbox are by default not public. Merely having copyrighted files in your Dropbox is certainly no violation of copyright law.

At which point does it become illegal? Is sharing it with one or two people ok? I would think that even putting it in your public folder is not necessarily illegal: What if you don't share the link publicly (or only with one or two people)?

Services like Rapidshare thrive on those ambiguities. They let you upload any file and give you a link, only after this link really becomes public will they take down copyrighted content (which introduces a time delay).

I have actually never seen that happen with Dropbox links (which, I think, is the right strategy for them: It would be bad for their brand if they were to become "that piracy website"), so they must be doing something different.

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I have copyrighted material in my Dropbox right now. It's copyrighted by me and my business partners. We're making a film and the material on our dropbox will eventually make it into the public eye.

We're not Big Media people, but what about other content creators? Especially musical collaborators...

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> Merely having copyrighted files in your Dropbox is certainly no violation of copyright law.

Actually, it could be. Copyright means exactly that: the right to copy.

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Yes, and having a copy of something doesn't mean that you don't have the right to have this copy.

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Copyright law is quite a bit more complicated than that. It's at any rate not only the copyright owner who is allowed to make a copy. You can, for example, rip your CDs and copy those files on your HDD as often as you want.

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Actually strictly speaking under the copyright law in this country, you cannot. It says "all rights reserved" on my CDs, and one of those rights is literally the right to copy. Bear in mind these laws were written a long time ago, when consumers did not have the means to make unauthorised copies, to prevent mass infringement.

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You can. 17 U.S.C. ยง 1008 (http://www.law.cornell.edu/uscode/17/1008.html) allows consumers to make non-commercial copies (both digital and analog).

As I said, copyright law is quite complex and full of exceptions and clarifications.

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Can anyone give a reference for this or indicate if it's true? I use Dropbox to backup my purchased music downloads; the thought that when my hard disk crashes, I can't restore them from my Dropbox because they might have been "purged" is rather worrying.

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If you're purchasing from iTunes, the files have your email and other personal info in them which would give them a unique hash and differentiate them from the content that was popular/being deleted.

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dropbox doesn't encrypt your data either, so it's generally not a good idea to keep any kind of your sensitive data unencrypted there.

i guess storing something like a small truecrypt volume there would be just about enough.

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Agreed. It's still a really neat hack, though.

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