Block-Only Relay
Network● Common
A connection mode where nodes only exchange blocks, not transactions or addresses. Reduces bandwidth and attack surface. Bitcoin Core maintains several block-only outbound connections for resilience.
Technical Notes
Use: -blocksonly mode (all connections), or automatic block-relay-only outbound connections. Benefits: resistant to tx-based attacks, lower bandwidth, backup block source. Does not relay: tx, addr, mempool requests.
Metadata
Visibility: Public
Created:1/3/2026by System