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Figure Credits

Figures are part of the technical argument, not decoration. Captions identify the source and the concept the figure supports.

Original Figures for This Book

  • Figure 1.1, Four functions behind blockchain scalability. Original diagram created for this edition.
  • Figure 2.1, Measurable trilemma trade-offs. Original diagram created for this edition.
  • Figure 3.1, Layer 1 and Layer 2 architecture. Original diagram created for this edition.
  • Figure 4.1, Cross-shard receipt lifecycle. Original diagram created for this edition based on SC6019 Lecture 02.
  • Figure 5.1, State-channel lifecycle and dispute path. Original diagram created for this edition based on SC6019 Lecture 03.
  • Figure 6.1, Rollup lifecycle and completion boundaries. Original diagram created for this edition.
  • Figure 6.2, Named optimistic and validity rollup traces. Original diagram created for this edition.
  • Figure 7.1, Modular transaction and message boundaries. Original diagram created for this edition.
  • Figure 8.1, Data availability sampling workflow. Original diagram created for this edition based on Celestia's design.
  • Figure 9.1, Parallel scheduling and deterministic commitment. Original diagram created for this edition based on Block-STM and SC6019 Lecture 05.
  • Figure 10.1, Leader-based BFT normal path. Original diagram created for this edition based on the HotStuff protocol paper.
  • Figure 11.1, Shared rollup and appchain trade-off. Original diagram created for this edition based on the architecture discussion in SC6019 Lecture 06.

Rights Checklist

Every figure in the manuscript now uses original artwork stored as editable SVG. Before a release, verify that each referenced figure exists, matches its caption, and remains covered by the book's license. A concept derived from a paper or lecture should cite that source even when the artwork is original. Generated build files and superseded source images should not ship as part of the rights inventory.