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specification/protocol/p2p/get_xblocktx.md
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2020-10-27 16:27:35 -04:00

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# Request: GET_XBLOCKTX
This message is sent to remote peer to request the transations still needed to reconstruct the block from the mempool after receipt of the previous [`XTHINBLOCK`](xthinblock) or [`THINBLOCK`](thinblock) message. This message should start with the hash of the block that is intended to be reconstructed, followed by a list of short hashes of the transactions still needed.
## Format
| Field | Length | Format | Description |
|--|--|--|--|
| Block hash | 32 Bytes | Bytes | The hash of the block being reconstructed. |
| Short transaction hashes | # of transactions * 8 bytes | vector | The 64-bit hashes of the transactions still needed for block reconstruction. |