Smart Contracts and Beyond. Fullstack Web3 Development Support

The digital landscape is undergoing a seismic shift with the rise of Web3, a decentralized internet powered by blockchain technology. At the core of this transformation lies Web3 development, an exciting field that empowers developers, entrepreneurs, and innovators to build applications that prioritize transparency, security, and user ownership.

Smart Contracts: The Backbone of Web3

Central to Web3 are smart contracts, self‑executing programs that run on blockchain networks. They automate agreements, ensuring trust without third parties.

Smart contracts in blockchain leverage the technology’s key features: immutability and transparency. Once deployed, they’re stored on a decentralized ledger, making them tamper‑proof and verifiable by all parties.

They drive the functionality of decentralized applications (dApps). From token exchanges to lending protocols, smart contracts enable secure, automated transactions in the cryptocurrency ecosystem.

Ethereum Smart contracts deserve special attention because Ethereum pioneered their widespread use. With its programming language Solidity, Ethereum provides a robust platform for developers to create complex contracts.

Smart contracts are an important but not the only part of Web3 development. In addition to smart contracts, decentralized applications are needed to interact with users, as well as infrastructure for the protocol to operate, such as nodes, oracles, etc.

Web3 Tools and Services to create a successful crypto startup

Frameworks for writing, testing, debugging, and deploying Solidity contracts.

Infrastructure,a(href="https://en.wikipedia.org/wiki/API") API / RPCendpoints, real‑time event streaming, and node services.

Indexing & Data Analytics dashboards cover user behavior and onchain metrics.

Data oracles for integrating off‑chain data feeds, like prices into smart contracts.

Сross‑Chain Interoperability

Decentralized Storage & File Systems for assets and metadata.

Human-readable blockchain domains, usable as wallet identifiers and login credentials.

Web3 Authentication & Identity

MPC and smart contract wallets integration

Payments & Crypropayouts integration

Security & Audit for smart contracts and dApps.

Benchmarking protocol performance

Decentralized autonomous organization (DAO) integration

You will need these tools to get started, but is it possible to do without them and save time and money? Of course, just

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But if you want to go it alone, here are our tips.

Checklist for Building Your First Ethereum dApp

When evaluating which blockchain network to choose for your application, key business metrics help assess real viability, efficiency, and growth potential. Below is a detailed breakdown of the most important factors:

On-Chain Activity & Adoption

Active / Unique Addresses – The number of distinct users interacting with the network. A higher count = stronger adoption

Recurring Users / Retention Rate – Measures how often users return. Essential for gauging platform stickiness and sustained value

Transaction Metrics

Transaction Volume & Value – Total transactions and the assets moved, indicating usage intensity and economic activity

Throughput (TPS) – Can the blockchain handle expected demand? Lower TPS risks bottlenecks under load

Average Block Time / Latency – Fast confirmation time improves UX. Targeting <10 seconds for most dApps.

Cost per Transaction / Network Fees – Lower and predictable fees support high‑frequency usage.

Economic Viability

Market Cap / TVL Ratio – Evaluates if token value aligns with actual platform usage. A lower ratio suggests undervaluation.

Total Value Locked (TVL) – Tracks capital committed to the chain’s DeFi ecosystem.

Cost Efficiency / TCO (Total cost of ownership) – End‑to‑end expenditure, including infrastructure and maintenance

ROI & Profit Margins – Especially for enterprises, measure benefits like cost savings, new revenue, and return on investment.

Interoperability & Infrastructure

Cross-Chain Efficiency – Measures time and cost when moving assets between networks. Vital for multi‑chain use cases

Infrastructure Quality – Depth of developer tooling, wallets, explorers, node solutions, custodial options.

Developer & Ecosystem Health

Developer Activity – Tool use such as GitHub commits, pull requests, and project births indicates a vibrant ecosystem

Project & Community Strength – The ecosystem’s vibrancy through active protocols, DeFi apps, community size, social engagement.

Select the best blockchain for dApp

Once you have the basic requirements for your future application, you can take a closer look at the blockchains on which it can be built.

Ethereum (and Layer‑2 rollups)

Ethereum maintains the largest developer ecosystem. It's a proven smart‑contract platform with solid security and network effects.

Gas fees remain high on L1; complex architecture for newcomers.

Ideal for: Complex DeFi, DAOs, NFTs, or any dApp needing maturity, decentralization, and mass adoption.

Solana

Blazing performance with sub‑second finality and ultra‑low fees.

Rust‑based smart contracts provide high performance.

Rapidly growing DeFi/gaming ecosystem.

Solana is less decentralized than Ethereum and has repeatedly experienced network downtime.

Its ecosystem is smaller than Ethereum's, but it is expanding rapidly.

It is ideal for applications with high throughput requirements.

Setting Up Your Development Environment

Install Core Software like Git for version control and collaboration.

Pick an Integrated development environment (IDE). Try Remix, an online IDE.

Set Up a Local Blockchain

Prepare advanced testing tools.

Add a Wallet

How to design smart contracts for Ethereum dApps

Define Functionality: List user actions (e.g., buying tokens, voting).

Decide what data stays on‑chain (e.g., transaction records) vs. off‑chain (e.g., user profiles).

Structure Your Contracts: Use a single contract for simple dApps or multiple for complex projects.

Explore upgradeable contracts with proxy patterns.

Focus on Security: Avoid overcomplicating logic to minimize risks.

Study common patterns like the withdrawal pattern.

Writing and Testing Your Smart Contracts

Select a Language: Solidity – Most popular, with vast tutorials and libraries. Vyper – Simpler syntax, security‑focused.

Keep code modular and well‑documented.

Write unit tests for individual functions. (Add order link)

Run integration tests to check contract interaction.

Building a front‑end for dApps

Design UX, how users interacts with your application. (Add order link)

Pick a Framework

Integrate Web3 Libraries

Show user/transaction status (e.g., “Pending,” “Confirmed”).

Smart contract security best practices

Audit Smart Contract. (Add order link)

Restrict sensitive functions to authorized users.

Stay Updated for the latest threats dependencies.

You can find current statistics on hacks at Defillama