It seems bizarre that such an issue hadn't been given a higher profile: a collision course between some elements of the use of blockhain and one of the biggest changes in data protection in history.
If the issue is as big as forecast, then there may be a mixture of head-scratching and anger - but perhaps, more likely, a lot of work being done by the brainiacs to ensure there is compliance, or at least enough to satisfy the EU.
There's one huge problem on the horizon for blockchain: Europe's privacy push in the shape of its General Data Protection Law.
The legislation, which will come into effect in a few months' time, says people must be able to demand that their personal data is rectified or deleted under many circumstances.
A blockchain is essentially a growing, shared record of past activity that's distributed across many computers, and the whole point is that this chain of transactions (or other fragments of information) is in practice unchangeable – this is what ensures the reliability of the information stored in the blockchain.
So, a potential problem, yes?