The Bitcoin Annotated
Timechain

105 artifacts plotted against the chain.

Block height as the spine. Halvings as the only protocol-level milestones. The shape is the argument.

Block 0 Current tip · ~900k
Pre‑chain
210k
1st halving
Nov 2012
420k
2nd halving
Jul 2016
630k
3rd halving
May 2020
840k
4th halving
Apr 2024
What the shape shows
10
Pre-chain
13
Cycle 1
0 – 210k
22
Cycle 2
210k – 420k
23
Cycle 3
420k – 630k
30
Cycle 4
630k – 840k
7
Cycle 5
840k – now

Each halving cycle has produced more artifacts than the last. Cycle 5 is barely a year old and already has five. Bitcoin's cultural production accelerates with the chain itself — and the chain itself marks the inflection points.