Skip to content
RelenshTech
Blockchain & Web3

Web3 products built around security, usability, and real-world workflows

Design and develop dApps, smart contracts, wallets, token flows, and blockchain integrations with practical risk controls.

What we build

Specific outputs matched to the project goal.

Service outcome guidance

Useful when decentralization or verifiable ownership is central to the product, not as a buzzword layer.

Smart contract development

dApp development

Wallet integrations

Token systems

NFT and asset workflows where relevant

Blockchain API integrations

Security testing

Audit-readiness checklist

Gas and UX considerations

Deliverables

Concrete work products, not vague capability claims.

Web3 architecture, network selection, custody assumptions, and threat model
Smart contracts, dApp frontend, wallet connection, and blockchain API integrations
Token, NFT, asset, or access workflows where they fit the business case
Unit tests, integration tests, edge-case checks, and audit-readiness checklist
Gas, transaction state, error handling, and UX recommendations

Technology stack

Tools selected for maintainability and fit.

SolidityRustHardhatFoundryEthers.jsWeb3.jsIPFSHyperledger FabricChainlinkPolygonAWS (node infra)Docker
Timeline range
4-16 weeks depending on contract complexity, audits, and integrations.
Example engagement
A Web3 proof of concept with wallet flow, contract prototype, event indexing, test coverage, and audit-readiness notes.
Proof artifact
Architecture notes, threat model, test report, contract docs, and audit-prep checklist.

Development process

A clear path from planning to support.

The exact scope changes by project, but the delivery rhythm keeps decisions, QA, and launch readiness visible.

  1. 1Protocol Selection — written recommendation on public chain (Ethereum, Polygon), permissioned chain (Hyperledger), or hybrid before build
  2. 2Smart Contract Architecture — security-first patterns: reentrancy guards, role-based access control, upgrade paths via proxies
  3. 3Integration & Testing — testnet runs covering gas spikes, failed transactions, and edge cases before mainnet
  4. 4Handoff & Auditability — full contract source, deployment scripts, ABI docs, and explainer doc

Security review and compliance awareness

Built around measurable delivery quality.

Blockchain projects require independent security review for meaningful production risk reduction.

Compliance needs vary by jurisdiction, asset type, token behavior, and user geography; legal review may be required.

We avoid claims about guaranteed security, token value, returns, or financial outcomes.

Gas costs, failed transactions, wallet compatibility, and network congestion are treated as product UX concerns.

Maintenance and support

Support after the first launch.

Audit preparation and remediation support
Contract monitoring, incident review, and upgrade planning
Wallet, API, indexing, and deployment support

Quality checklist

What we verify before handover.

The checklist changes by scope, but these are the checks expected for this service.

Threat model, custody assumptions, permissions, and upgrade path
Contract unit tests, integration tests, failed transaction states, and gas review
Wallet, network, signature, and error-state UX
Audit-readiness package and compliance review handoff

Related services

Useful internal links for planning the full scope.

FAQs

Common questions before starting.

Do blockchain projects require a security audit?

Production smart contracts should receive independent security review. We can prepare contracts for audit and support remediation, but we do not claim audits are optional for serious launches.

Can you help decide whether blockchain is the right fit?

Yes. We assess whether shared verification, ownership, provenance, or programmable settlement justify the added complexity compared with a conventional database.

Do you build token or NFT workflows?

Yes, where relevant. We define permissions, custody, metadata, transaction states, user experience, and compliance considerations before implementation.

Can you integrate Web3 into an existing product?

Yes. We can add wallet flows, contract reads and writes, blockchain APIs, indexing, and backend services to existing web or mobile products.

How is blockchain development priced?

Pricing depends on contract complexity, wallet flows, token or NFT rules, backend integrations, network choice, testing depth, audit preparation, and compliance review needs.

How long does a Web3 project take?

A simple wallet integration is much smaller than a production dApp or token system. Smart contract design, testing, audit preparation, and user transaction flows usually drive the timeline.

Blockchain & Web3

Ready to turn the scope into a practical plan?

Share the goal, timeline, current stack, and constraints. We will recommend the next useful step.

Review My Web3 Idea