Development of secure, decentralized applications including smart contracts, NFT platforms, DeFi protocols, supply-chain traceability systems, token economies, private/permissioned blockchains, and Web3 solutions using Ethereum, Solana, Polygon, Hyperledger, and other leading blockchain frameworks.
Newwave Solutions
Premier Verified
9 Reviews
$5000+
$<25 / hr
250-999
Hanoi, Vietnam
Newwave Solutions is a Blockchain Development company specializing in Blockchain Technology and Distributed Ledger Development. They receive positive feedback for their professional project management and attention to detail, with clients noting successful outcomes in blockchain solutions tailored to their needs. The reviews reflect a strong alignment with client values and cost-effective solutions, with no noted areas for improvement.
Vention
Premier Verified
10 Reviews
$25000+
$50 - $99 / hr
1000-9999
New York, NY
Vention is a versatile software development company specializing in AI, software development, and staff augmentation. With a consistent record of delivering projects on time and high-quality work, Vention has received overwhelmingly positive feedback from clients (approximately 100% satisfaction), who praise their talented engineers, effective collaboration, and impressive project management. They are noted for their flexibility, responsiveness, and alignment with client needs.
CyberSafeHaven Consulting
Premier Verified
9 Reviews
$5000+
$50 - $99 / hr
2-9
Bengaluru, India
Boutique consulting firm specialising in application security (appsec) solutions including VAPT services, product security, cloud security & DevSecOps.
Creating secure, decentralized systems for transactions, smart contracts, NFTs, or supply chains using blockchain tech like Ethereum or Hyperledger.
Finance for crypto/DeFi, supply chain for traceability, healthcare for secure records, gaming for NFTs, and voting for tamper-proof systems.
Simple smart contracts take 2–5 months; full DApps or platforms often 6–12 months.
Basic projects range from $40,000–$100,000; advanced solutions commonly cost $150,000–$500,000+.
Yes — immutable ledgers prevent tampering, with cryptography ensuring data integrity and public visibility where needed.
Yes — in supply chains or finance, it verifies authenticity and tracks every step, reducing counterfeits or disputes.
Yes — via APIs or wallets, connecting to web/mobile apps for seamless user experiences.
Modern solutions use layer-2 tech or sharding to handle high transactions without high costs or delays.
