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Cara Kerja Blockchain | How Blockchain Works

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Kalian pastinya sudah dengar tentang teknologi Blockchain yang super aman. Apa kalian tahu cara kerja Blockchain? Kita simak bersama pembahasannya, yuk!

  1. Secure Hash Algorithm 256 bits mengambil sebuah input berupa angka, teks, atau pun file komputer;
  2. Output yang dihasilkan disebut “hash”  dan akan memiliki panjang yang sama dengan yang di-input;
  3. Perubahan sekecil apapun pada input akan merubah output secara keseluruhan. Ini disebut one way function;
  4. Pengguna yang ingin bertransaksi menyebarkan pesan kepada penambang dalam jaringan, lalu penambang memastikan transaksi itu sah;
  5. Penambang menaruh blok melalui algoritma SHA-256, dengan output yang harus dimulai dengan sejumlah angka 0;
  6. Saat blok sudah tertambang, penambang menyebarkankan blok itu pada penambang lainnya;
  7. Bila blok sudah dipastikan benar, salinan Blockchain ditambahkan, dan transaksi selesai;
  8. Penambang mengikutsertakan output dari blok sebelumnya agar tersambung dan menjadi rantai blok;
  9. Bila penambang ingin bermain curang, diperlukan 50% tenaga komputasi jaringan. Jadi, kecurangan sangatlah mustahil.

Bagaimana, Sobat! Sungguh teknologi yang terbaru dan susah dibobol, ‘kan?

ENGLISH

You certainly have heard about Blockchain’s super safe technology. Did you know how Blockchain works? Let’s check it out together!

  1. Secure Hash Algorithm 256 bits takes input in the form of numbers, texts, or even computer files;
  2. The output produced is called “hash” and will have the same length as the input data;
  3. The slightest change in the input will change the output entirely. This is called one way function;
  4. The user that wants to do transaction broadcasting message to the miner in the network, and then the miner will make sure the transaction is legal;
  5. The miner will put the block through SHA-256 Algorithm, with an output that has to be started with numbers of 0;
  6. When the block is already mined, the miner will spread the block to the other miners;
  7. If the block is already confirmed right, the Blockchain copy will be added, and the transaction has finished;
  8. The miner will include the output from the previous block, so that they’ll be connected and become blockchain;
  9. If the miner wanted to cheat, it would take 50% of network computing power. So, cheating is absolutely impossible.

So, how was it, guys? Such a latest and unbreakable technology, right?

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