Blockchain is being hyped as never before. Since last year's SATURN, a series of blockchain initiatives has been run, both internally and in consortia with other companies. We have learned quite a few things about what makes a good blockchain problem through these efforts. This experience report will describe the internal checklist that we use to prioritize projects and fend off over-hyped blockchain enthusiasts.
Key topics include defining transactions to put on the chain, transparency requirements, Central Authorities, open vs. permissioned blockchains, transaction speed, consensus mechanisms (and how to reach a single version of the truth), and some examples of business problems where blockchain can be part of the solution.