solid and dids

Thanks for everyone that participated on the call yesterday, it was great
to meet you all

One topic that came up a few times was DIDs.

Tim Berners-Lee made the excellent point that if you choose to put your
identity on a block chain, you have to hope that the block chain (or the
resolver) is going to be around longer than DNS.

I was wondering if there exists any experimental work in this area, from
people in this group?