<i><div class="text-center">5% of the rewards of this post are for @steem.amal</div></i>

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[【CoinGeek】Create your own pocket sized blockchain in JavaScript](https://coingeek.com/create-your-own-pocket-sized-blockchain-in-javascript/)
![Screenshot_20211113-204129_Chrome.jpg](https://cdn.steemitimages.com/DQmUBihFSUdt4DrSnAeo4GzP1fF43q1fSA53gSFWYUYZti1/Screenshot_20211113-204129_Chrome.jpg)

Satoshi Nakamoto has established the basic structure of the blockchain with Bitcoin. Here we just follow it, albeit a simplified one.

In blockchain, the block header stores the "Merkle Root". This is a hash of all the transactions in that block.

Then, each new block also holds the hash of the last block as a "chain". This is a fundamental property of blockchain. In other words, each block is built on top of the previous block.

Next, we just need to initialize the blockchain array and create our first block, the Genesis Block.

See also:
* [@steem.amal: Charity At Your Fingertips](https://steemit.com/hive-159906/@puncakbukit/steem-amal-charity-at-your-fingertips)
* [Maximize curation rewards: follow our trail! Maksimalkan reward kurasi: ikuti trail kami! トレイルをフォローし、キユレーション報酬を最大化！](https://steemit.com/hive-175254/@puncakbukit/maximize-curation-rewards-follow-our-trail-maksimalkan-reward-kurasi-ikuti-trail-kami)
* [Pi Network - Crypto Pertama Yang Dapat Ditambang Di Ponsel](https://steemit.com/pi/@puncakbukit/pi-network-crypto-pertama-yang-dapat-ditambang-di-ponsel)
* [Piネットワーク — スマートフォンでマイニングできる最初の暗号通貨](https://steemit.com/pinetwork/@puncakbukit/pi)