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<div class="cwikmeta">{
"title":"HEADERS",
"related":["/protocol","/protocol/p2p/getheaders"]
}</div>
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* Provides a contiguous set of block headers *
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## HEADERS Message Format
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|Size in bytes|Description|Data type|
|-------------|-----------|---------|
|1+ | Number of headers | varint|
|(81 + (1+)) * count |[Block headers ](/protocol/blockchain/block/block-header/ ) and number of txs in the block|Blockheader + varint|
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No more than 2000 block headers may be sent at one time. Block headers in this array MUST be sequential, ordered by height and without range gaps.
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The number of txs in header is **DEPRECATED ** and should be ignored. Nodes are allowed to send 0 regardless of the actual number of transactions in the block.
