# Blockchain Data Content type: Topic Hub Related resources: - State Root (Glossary Term): https://theblockchainlibrary.com/glossary/state-root - Witness Data (Glossary Term): https://theblockchainlibrary.com/glossary/witness-data
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Blockchain Data

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Key Glossary Terms

Essential vocabulary for this topic

State Root

advanced

A cryptographic commitment representing the complete blockchain state at a particular point in time.

Witness Data

advanced

Auxiliary proof data supplied to help a verifier confirm a transaction or state transition without holding all underlying state.