Does my business actually need blockchain?

Probably not, unless you have a specific need for trustless transactions, immutable records, or decentralized ownership. Most business problems can be solved with a regular database. Blockchain adds real value in supply chain transparency, tokenized assets, decentralized finance, and NFT platforms.

What is the difference between a public and private blockchain?

Public blockchains (like Ethereum) are open to anyone and fully decentralized — no single party controls them. Private blockchains are permissioned, meaning only approved participants can read or write. Private blockchains are faster and cheaper but sacrifice decentralization.

What is a smart contract?

A smart contract is code that runs on a blockchain. It automatically executes when predefined conditions are met — no middleman needed. For example, releasing payment when goods are delivered, or minting an NFT when a purchase is confirmed.

How much does building a blockchain application cost?

A simple smart contract and basic frontend might cost ₹3–8 lakhs. A full DeFi protocol or NFT marketplace with custom tokenomics, security audits, and cross-chain support can easily run ₹30–80 lakhs. Security audits alone for smart contracts can cost ₹5–15 lakhs.

How are blockchain applications audited for security?

Smart contract audits are done by specialized security firms who review the code line by line for vulnerabilities like reentrancy attacks, integer overflow, and access control flaws. Audit reports are made public so users can trust the protocol. Do not launch a DeFi product without one.