Good point and thanks for the clarification. Glad to know I moved in the right direction. :) I used the term "ledger" simply because that is the common term us

Good point and thanks for the clarification. Glad to know I moved in the right direction. :) I used the term "ledger" simply because that is the common term used to describe blockchains. My reason for writing the code was to explore how a hashed transaction "ledger" fits together at a more technical level, instead of as a marketing buzzword. Plus it is there in case others want to understand just that piece of it. That link is very straightforward. I have a copy of Haber & Stornetta's 1991 paper on timestamping but haven't read it yet.