Blockchain Technology

What Is Blockchain Technology?


Blockchain technology is a decentralized digital ledger that allows multiple parties to record transactions securely and transparently. Originally founded as the technology behind the Bitcoin cryptocurrency, its usage has grown exponentially.

At its core, a blockchain consists of a series of blocks containing a set of transactions. These blocks are linked using cryptographic technology, forming an immutable structure and record of online transactions.


  • Unlike traditional systems where a single authority manages data and transactions, blockchain operates on a decentralized network.
  • All transactions recorded on the blockchain are visible to all network members. This transparency ensures that any changes or modifications to the data are easily tracked, increasing reliability and accountability.


  • Blockchain uses advanced cryptographic techniques to protect data and prevent unauthorized access or alteration. 


  • These changes further improve system security and reliability.


  • Blockchain Network uses reconciliation mechanisms to acknowledge and reconcile transactions before they are added to the ledger. Popular types of contracts include Proof of Work (PoW) and Proof of Service (PoS).

Blockchain technology finds applications in various industries outside of cryptocurrencies, including supply chains, elections, healthcare, real estate, and more. Its ability to provide an integrated, secure and decentralized environment has attracted a lot of interest and investment from both the private and public sectors in an attempt to exploit the potential benefits.

Blockchain Certification:

Blockchain Technology

In my final report in September 2021, blockchain certification refers to obtaining a certificate or certificate of achievement that attests to an individual’s knowledge and expertise in blockchain technology. Blockchain is the decentralized and secure technology that underpins cryptocurrencies like Bitcoin and Ethereum, but its applications go beyond digital currencies. It can be useful in various areas, including finance, supply chain management, healthcare, etc.

Various organizations, institutions, and websites typically issue blockchain certificates. This certification aims to solidify one’s understanding of blockchain concepts, applications, smart contracts, and other related topics. Some well-known certification programs may include:

  • Certified Blockchain Professional (CBP) – A new Blockchain Council Certification aimed at individuals seeking a deeper understanding of blockchain technology and applications.
  • Certified Ethereum Developer (CED) – Offered by the Ethereum Foundation, this certification focuses primarily on developing the Ethereum blockchain.
  • IBM Blockchain Developer Certification – Offered by IBM, this certification focuses on developing applications using the IBM Blockchain platform.
  • Certified Blockchain Expert (CBE) – Offered by the Blockchain Training Alliance, this certification covers a wide range of blockchain technologies and applications.

It’s important to note that the blockchain industry is constantly evolving, and new certification schemes may emerge after my last change. For the most up-to-date information on blockchain certification programs and their benefits, I recommend doing an online search or investigating a reputable organization specializing in blockchain training and certification.

Blockchain Developer

As a blockchain developer, your role involves designing, implementing, and maintaining decentralized applications (DApps) and blockchain solutions. Here is the blockchain builder, a breakdown of the basics:

Understanding Blockchain Technology

A strong understanding of blockchain fundamentals is essential. This includes knowing how blockchains work, contracts Proof of Business, Proof of Stake), smart contracts, decentralized networks, and types of blockchains (public, private, group).

Programming Languages 

Knowledge of programming languages commonly used in blockchain development is essential. Solidity is the most popular language for writing smart contracts on Ethereum, but other languages such as JavaScript (web-based apps), Go, Python, and C++ are also suitable for blockchain development.

As a blockchain developer, you must be proficient in writing secure and efficient smart contracts to implement business logic and automate processes on the blockchain.

Crowdsourced Application Development: Application architecture enables applications, front end components and is integrated with blockchain smart contracts backend. Knowledge of web development technologies such as HTML, CSS, JavaScript, and frameworks like React, Angular, or Vue.js is essential.

Blockchain Platform:

Knowledge of a specific blockchain platform is required. The widely used Ethereum is the number one, but other products like Binance Smart Chain, Solana, Polkadot, and more are increasing dramatically. Understanding the nuances and their tools is essential to success in this arena.

Security best practices: Security is very important in blockchain development due to the immutable nature of the data. Understanding common attacks such as re-entry, backfill, and proper authentication and authorization checks is important.

Token Standards: When working on a tokenization project, you should be familiar with token standards such as ERC-20 (Ethereum), BEP-20 (Binance Smart Chain), and others that define the criteria for creating fungible tokens.

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