Add blockHeader instructions and examples.

README-bitcoin.md

@@ -26,6 +26,7 @@ Interface to access the Bitcoin `mainet`, `testnet`, `signet` APIs.
     - [Get Block Txids](#get-block-txids)
     - [Get Block Txid](#get-block-txid)
     - [Get Block Raw](#get-block-raw)
+    - [Get Blocks Header](#get-blocks-header)
     - [Get Blocks Height](#get-blocks-height)
     - [Get Blocks](#get-blocks)
     - [Get Blocks Tip Height](#get-blocks-tip-height)
@@ -284,6 +285,25 @@ const blockRaw = await blocks.getBlockRaw({ hash });
 console.log(blockRaw);
 ```
 
+### **Get Blocks Header**
+
+Returns the hex-encoded block header.
+
+**Parameters:**
+
+- {string} hash
+
+[ [NodeJS Example](examples/nodejs/bitcoin/blocks.ts) ] [ [HTML Example](examples/html/bitcoin/blocks.html) ] [ [Top](#features) ]
+
+```js
+const {
+  bitcoin: { blocks },
+} = mempoolJS();
+
+const blockHeader = await blocks.getBlockHeader({ hash: '0000000000000000000065bda8f8a88f2e1e00d9a6887a43d640e52a4c7660f2' });
+console.log(blockHeader);
+```
+
 ### **Get Blocks Height**
 
 Returns the hash of the block currently at `:height`.

examples/html/bitcoin/blocks.html

@@ -30,6 +30,9 @@
         const blockRaw = await blocks.getBlockRaw({ hash });
         console.log(blockRaw);
 
+        const blockHeader = await blocks.getBlockHeader({ hash });
+        console.log(blockHeader);
+        
         const blockHeight = await blocks.getBlockHeight({ height: 0 });
         console.log(blockHeight);
 

examples/nodejs/bitcoin/blocks.ts

@@ -26,6 +26,9 @@ const init = async () => {
   const blockRaw = await blocks.getBlockRaw({ hash });
   console.log(blockRaw);
 
+  const blockHeader = await blocks.getBlockHeader({ hash });
+  console.log(blockHeader);
+
   const blockHeight = await blocks.getBlockHeight({ height: 0 });
   console.log(blockHeight);