120 / 600CMPCT

Compact block relay

BIP152 sends short transaction identifiers so peers reconstruct blocks from their mempools with less bandwidth and latency.

BIP152 sends short transaction identifiers so peers reconstruct blocks from their mempools with less bandwidth and latency.

BIP152 sends short transaction identifiers so peers reconstruct blocks from their mempools with less bandwidth and latency. This coordinate is placed in the wider system through its protocol, economic and historical relationships.

Understanding Compact block relay helps distinguish a verifiable Bitcoin mechanism or historical record from slogans, products and market narratives.

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Linked to related atlas coordinates

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Grounded in a source record

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Explains function and trade-offs

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Part of the open Bitcoin knowledge graph

DOC · 001BIP152 — Compact Block RelaySpecification
Reviewed 25 July 2026Source-first · No investment advice