Blockchain & Cryptocurrency Glossary

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BlobStore Network

1 min read
Pronunciation
[blob-stor net-wurk]
Analogy
Like BitTorrent combined with a notary that timestamps and verifies each file chunk on a ledger.
Definition
A distributed storage layer for large binary objects (“blobs”) anchored by blockchain commitments to ensure data availability and integrity.
Key Points Intro
BlobStore networks decouple bulky data storage from block validation while preserving trust.
Key Points

Data availability: Blobs committed via Merkle or KZG roots in block headers.

Sharding: Splits blobs across storage nodes for scalability.

Incentives: Rewards for storing and serving blob data.

Retrieval protocols: P2P protocols for fetching blob chunks.

Example
Ethereum’s proto‑Danksharding introduces blobs in EIP‑4844, where rollup data is stored off‑chain but verified on‑chain via KZG commitments.
Technical Deep Dive
Blob-carrying transactions include commitment fields; execution layer nodal software writes blobs to a separate datastore. Consensus layer records KZG polynomial commitments in blocks. Light clients verify blob inclusion via succinct proofs. Erasure coding improves resilience against node dropout.
Security Warning
Data withholding by storage nodes can break rollup proofs; implement fraud proofs and slashing.
Caveat
Blobs are not accessible to EVM bytecode; specialized APIs are required for retrieval.
Related Terms
KZG Commitments

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