Editing Datachain (section)

= Attacking the datachain =

Since you’re attaching submissions to the minting of new rewards within a chain you would need to use a hybrid proof-of-work system where submissions were also mined using standard hashcash style proof-of-work (or just stamp them with Bitcoin.) Otherwise Google can come along and replace the entire chain in 1 nano second.

There is also the issue of reverse engineering the AI to produce thousands of random garbage images that would all be considered valid. To stop that problem, the data set would likely have to be specified beforehand by using hashes – for example by using meta-data collected from a list of torrent files that is then distributed with the DAS at the time of its creation.

The final problem is that you would need to find a way to verify that submissions were unique so that minor alterations couldn’t produce millions of new matches. There are algorithms that can do that without effecting the decentralized nature of the DAS, however the problem with that is – the algorithm would likely have exponential properties since it would need to check every past image against new solutions (this is bad.)

Alternatively, you could just ignore duplicates. Doubtless to say that a vast number of duplicates would still occur but if you restricted solutions so that they can only come from a valid pre-existing set of files based on meta-data: the incentivisation structure would probably still work.

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