[FabHK]

There is some argument about terminology, whether the notion of blockchain includes the peer-to-peer distribution and consensus mechanism (eg proof-of-work) or not. (In my view, it shouldn't.)

Git uses a somewhat extended version of a blockchain (a directed acyclic graph instead of just a linked list).

I think it's a cool technology, and has many applications where you want an immutable sequence of records. But it's not a panacea, and the current hype is overblown.

[stevekemp]

Agreed with your last sentence entirely.

I've been messing around with using a blockchain for storing DNS records, I think it's a neat idea, but the overhead is pretty large considering the small amount of data that is involved.

[vijayr]

Any favorite resources you use to learn?

[stevekemp]

Reading source code of existing learning/real chains. Then trial and error - the usual :)