Network, Relay & Client Sync • Estimated 70m

Transaction Bloom Filtering (BIP37)

protocol.bloom-filters-bip37

Legacy lightweight-client filtering using bloom filters and why modern wallets moved to compact filters.

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Curated resources (3)

• BIP 37: Connection Bloom Filtering (article) Canonical protocol definition for bloom-filtered transaction relay.
• Bitcoin Optech: Transaction Bloom Filtering (article) Security and privacy limitations with historical context.
• Bitcoin Developer Guide: Wallets (article) Explains SPV wallet behavior and related trust models.

Direct prerequisites (2)

• Addresses and Outputs
• Bitcoin P2P Message Flow

Direct dependents (0)

• None

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