diff --git a/README.md b/README.md
index 4271eff..5ccbc28 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Bitcoin Whitepaper Exercises
+# Bitcoin Whitepaper Exercises - This is Vijay's version
 
 In these exercises, you will learn about blockchains from the perspective of the [original Bitcoin Whitepaper](https://bitcoin.org/en/bitcoin-paper).
 
diff --git a/hashing/hashing.js b/hashing/hashing.js
index 83c81a5..243f2ee 100644
--- a/hashing/hashing.js
+++ b/hashing/hashing.js
@@ -28,8 +28,29 @@ Blockchain.blocks.push({
 });
 
 // TODO: insert each line into blockchain
-// for (let line of poem) {
-// }
+for (let line of poem) {
+	createBlock(line)
+}
+
+// Create function createBlock
+// `index`
+// `prevHash`
+// `data`
+// `timestamp`
+// `hash`
+
+function createBlock(_data) {
+	let block = {
+		index: Blockchain.blocks.length,
+		prevHash: Blockchain.blocks[Blockchain.blocks.length - 1].hash,
+		data: _data,
+		timestamp: Date.now()
+	}
+	block.hash = blockHash(block)
+	Blockchain.blocks.push(block)
+	console.log(block)
+	return block
+}
 
 // console.log(`Blockchain is valid: ${verifyChain(Blockchain)}`);
 
@@ -39,5 +60,6 @@ Blockchain.blocks.push({
 function blockHash(bl) {
 	return crypto.createHash("sha256").update(
 		// TODO: use block data to calculate hash
+		`${bl.index};${bl.prevHash};${bl.data};${bl.timestamp};`
 	).digest("hex");
 }