Blockchain works as a decentralised digital ledger that records transactions across a network of computers, ensuring transparency and security without relying on a central authority. Each transaction is grouped into a “block” which is then cryptographically linked to the previous one, forming a chronological “chain.” Once added, these blocks can’t be altered without consensus from the network, making the system highly resistant to tampering or fraud. This structure enables trust between participants and serves as the foundation for cryptocurrencies, smart contracts, and many Web3 applications.

Blockchain takes database infrastructure, data sharing, and information liquidity to a level never seen before. Blockchain technology comes in multiple forms, most popularly, public blockchains (such as the Bitcoin blockchain and the Ethereum blockchain, as well as hundreds of others), as well as consortium blockchains and private blockchains, which provided hundred of value-adding opportunities for business, enterprise, and organisation use-cases.

Public blockchains are fully open and permissionless networks that anyone can access, participate in, and verify. Every transaction is recorded transparently on a shared ledger that is distributed across thousands of nodes worldwide. Since a single entity controls the network, trust is established through decentralised consensus mechanisms (such as Proof of Work or Proof of Stake) and secured by cryptography.

Public blockchains (like Bitcoin, Ethereum, and Solana), form the foundation of Web3, digital assets, tokenisation, and hundreds of other innovations that involve data value transfer, build decentralised applications (dApps), or exchange data without relying on intermediaries. They are ideal when transparency, security, and censorship resistance are essential, but may be less efficient for organisations that need privacy or strict control over who can access the network.

Consortium blockchains enable trusted groups of organisations to securely share data, maintain joint records, and build interoperable ecosystems through shared governance and consensus. In these systems, each member organisation runs a node and participates in verifying transactions, ensuring that no single entity has complete control. Because the network is incentivised by the shared value of its digital asset or data integrity, participants are motivated to maintain honest consensus and uphold the network’s reliability.

This setup is ideal for a wide variety of data exchange use-cases for enterprise and organisation purposes, where members want access to information, but within a controlled, permissioned, and trusted ecosystem.

Private blockchains give individual organisations secure, permission-based control over data and transactions, allowing them to manage, monetise, and protect information within a closed, verifiable system. Private blockchains are controlled by a single organisation that defines who can access, participate, and interact within the network. From the perspective of a scale, private blockchains are to the right of databases and to the left of consortium and public blockchain ecosystems.

This model is especially useful for businesses, consultancies, or firms that want to manage sensitive data internally or monetise access to their network. For example, a consultancy could run its own blockchain to store verified project data, client credentials, or service records, giving selected partners or clients secure access based on defined permissions.

Private blockchains combine the security and immutability of blockchain technology with enterprise-level control, allowing organisations to safeguard and securely share proprietary information while still benefiting from the transparency, traceability, and automation that blockchain provides, and have ideal use-cases for consultancies, enterprises, and internal systems that require control, compliance, and data security.

Yes, blockchain developers are very much in demand. Numerous sources highlight robust growth in job opportunities for developers skilled in blockchain technologies, smart contracts, cryptography and associated languages. There is a projected annual growth of around 23% for blockchain developer roles over the next several years.

Blockchain is unlikely to completely replace banks, but it is reshaping how the financial system operates. By enabling faster, cheaper, and more transparent transactions without intermediaries, blockchain challenges traditional banking functions like payments, lending, and settlements. However, banks still play crucial roles in regulation, trust, and large-scale financial management that decentralized systems haven’t fully matched. Instead of being replaced, many banks are adopting blockchain technology themselves to improve cross-border payments, reduce fraud, and streamline operations leading to a future where traditional finance and blockchain coexist and complement each other.

Decentralisation is the shift from traditional, centralised systems (like banks, corporations, or databases controlled by one authority) to networks where control and data are distributed among many participants. In the context of blockchain, Web3, digital assets, and tokenisation, decentralisation replaces the need for a single database or middleman with a shared, tamper-resistant ledger that the public (or permissioned entities) can access and verify.

This new model transforms how information, value, and ownership are exchanged online. Instead of trusting a single organisation to store or approve data, decentralised systems rely on transparent code, consensus mechanisms, and cryptographic security, creating a new frontier for how the internet manages and transfers data, assets, and trust.