Frequently Asked Questions

Blockchain is a distributed, decentralized ledger that records transactions across multiple computers. It uses cryptography to create an immutable chain of blocks, making it extremely secure and transparent.

Each block contains a hash of the previous block, creating an unbreakable chain. If anyone tries to alter past data, the hash breaks, revealing the tampering.

Blockchain: Decentralized, immutable, cryptographically secured, transparent, no single point of failure.

Traditional Database: Centralized, data can be modified, requires trusted administrator, less transparent.

Public: Open to all, fully decentralized (Bitcoin, Ethereum)

Private: Restricted access, controlled by organizations

Hybrid: Combination of public and private features

Consortium: Controlled by multiple organizations

No. While blockchain powers cryptocurrencies, it has many other applications including supply chain management, healthcare records, voting systems, intellectual property, and more.

A smart contract is self-executing code deployed on a blockchain. It automatically executes actions when predefined conditions are met, eliminating the need for intermediaries.

Solidity: Most popular, used on Ethereum

Vyper: Python-like, focus on security

Rust: Used on Solana and other networks

Go: Used on Cosmos and other blockchains

No, smart contracts are immutable once deployed on the blockchain. However, developers can implement upgrade patterns using proxy contracts or create new versions and migrate data.

Deployment costs (called "gas fees") vary depending on network, contract complexity, and network congestion. Ethereum is more expensive than Layer 2 solutions like Polygon or Optimism.

Smart contracts can be secure if properly developed and audited. However, poorly written contracts can have vulnerabilities. Professional security audits are essential before deploying contracts managing significant funds.

A reentrancy attack occurs when a contract calls another contract, which recursively calls back into the original contract before the first call completes. This can drain funds if not properly protected.

Protection involves using the Checks-Effects-Interactions pattern or reentrancy guards.

Security audits identify vulnerabilities before deployment. Professional auditors check for common attack vectors, gas optimization issues, and logic flaws. For contracts managing significant funds, audits are essential.

We offer smart contract development, blockchain consulting, DeFi solutions, cryptocurrency management, NFT development, and training programs.

Timeline depends on contract complexity, requirements, and audit needs. Simple contracts may take weeks, while complex systems can take months. We provide estimates after understanding your requirements.

We work with major blockchains including Ethereum, Polygon, Binance Smart Chain, Avalanche, Solana, and others. We can advise on the best network for your project.

Yes, we offer ongoing support, monitoring, and maintenance for deployed contracts. We can help with upgrades, bug fixes, and optimization as your project evolves.