BAC-L1-TIA-102Celestia and modular blockchains
The data availability problem
A block producer can publish a valid header while withholding the data. That long-underrated problem is what this whole track rests on.
- Level
- L1 — Blockchain developer
- Duration
- 3 h
- Maintainer
- Modular Blockchain / Celestia Architect
Learning objectives
- 01State the data-withholding problem precisely
- 02Explain why header verification is insufficient
- 03Describe what a verifier must obtain to be convinced
Guided lab
Reproduce data withholding in the lab and watch header-only verification fail.
Independent lab
Write a note explaining the problem to a non-technical decision-maker without over-simplifying it.
Security angle
Data withholding is not theft but paralysis. What makes it formidable is that it leaves no proof behind.
Assessment
Explanatory note assessed on its technical accuracy.