Blockchain development services

Blockchain, with node infrastructure we operate ourselves

HiTechCloud builds smart contracts, decentralized applications and traceability systems — on the blockchain node, RPC endpoint and validator infrastructure we already run for customers.

Discuss your project Blockchain Node service

Scope: Smart contracts · dApps · Nodes · Integration
Infrastructure: Dedicated blockchain nodes and RPC endpoints
Security: Contract code review before deployment
Operations: Node monitoring and 24/7 technical support

Overview

The hard part of blockchain is operations, not ideas

Writing a smart contract that runs on testnet is the easy part. The hard part is keeping it stable afterwards: nodes must stay in sync, RPC endpoints must take load, private keys must be protected, and a bug in a deployed contract cannot simply be patched like ordinary software.

HiTechCloud approaches this from the infrastructure side — our original trade. Blockchain nodes, RPC endpoints and validators are already services we run, so the application is designed alongside the environment it will run in.

We are direct about whether your problem genuinely needs blockchain. In many cases a properly audited database solves it at a fraction of the cost.

Common problems

Where blockchain projects usually trip up

Picking a chain before the problem is clear

The technology is fixed up front, and only during the build does it emerge that a conventional database would answer most of the requirements.

Contracts audited after they are already live

Deployed code cannot be edited, so every logic flaw or vulnerability turns into a real loss.

Total dependence on public RPC endpoints

Free endpoints are rate limited and occasionally go down, taking the application with them.

No plan for running nodes

Nodes need monitoring, syncing and upgrades at every hard fork; with nobody owning that, the data drifts.

Service

Blockchain service scope

Smart contract development

Designing, writing and testing smart contracts on EVM networks and other common platforms, with an automated test suite.

Smart contract security review

Auditing contract code against known vulnerabilities before mainnet — a step you cannot redo afterwards.

Decentralized applications (dApps)

Web or mobile front ends that connect a user wallet, read and write on-chain, and fall back to a conventional backend where sensible.

Blockchain nodes and RPC

Deploying and operating dedicated nodes, project-specific RPC endpoints, archive nodes and validators.

Traceability

Recording product journeys, documents and inspection milestones on chain, so third parties can verify without trusting one party.

Integration with existing systems

Connecting on-chain data to the ERP, warehouse, accounting and other internal systems already running.

Real-world use cases

Problems blockchain genuinely solves

01

Traceability for agricultural produce and food

Multiple supply-chain parties record data without any one of them being able to rewrite history.
02

Certificates and credentials

Issuing digital certificates that anyone can verify independently, without contacting the issuer.
03

Digital assets and in-game items

Transparent item ownership, tradable between players with a complete transfer history.
04

Multi-party payments and reconciliation

Automating revenue splits and conditional payments between partners using smart contracts.
05

Infrastructure for Web3 projects

Nodes, RPC, indexers and monitoring for live projects that need stable operating infrastructure in Vietnam.
06

Validator nodes for enterprises

Running consensus nodes with high uptime requirements, key protection and continuous monitoring.

Process

How a blockchain project is delivered

01
Assessing the problem

Deciding whether blockchain is genuinely needed, choosing the right network and estimating transaction costs at real volume.
02
Design and development

Designing the on-chain data model, writing the smart contracts and building the app and backend around them.
03
Testing and security review

Running the test suite, deploying to testnet and reviewing the contract code before mainnet.
04
Deployment and operations

Going live on mainnet with dedicated nodes and RPC, plus continuous monitoring and support.

Technology

The technology stack we use

Contract

Solidity
Hardhat
Foundry

Applications

React
Next.js
Web3 SDK
Node.js

Infrastructure

Blockchain Node
RPC Endpoint
Indexer
Cloud Server

Operations

24/7 monitoring
Backup
Anti-DDoS
Key management

Customer

Who this service is for

Businesses that need provenance tracking

Several parties write the same records and none trusts the others.
You need tamper-evident evidence for export or inspection files.
You want to trial it on one product line before expanding.

Teams building on-chain products

Contracts need an audit before they reach mainnet.
You depend on public endpoints and keep hitting rate limits.
You need your own nodes with someone watching and upgrading them.

Businesses still deciding whether blockchain fits

It is not yet clear that your problem needs a distributed ledger.
You want a straight assessment rather than a technology pitch.
You need to compare running costs against a conventional database.

FAQ

Does my business actually need blockchain?

Blockchain earns its place when several parties who do not fully trust each other read and write the same data and need to prove the history was not altered. If one organization controls the data, an audited, digitally signed database is usually far cheaper and simpler. We say so during consulting.

How are on-chain transaction costs calculated?

It depends on the network chosen and the transaction volume. At design time we estimate costs at real operating scale so you can weigh networks, or choose to write only aggregated data on chain.

Does HiTechCloud run dedicated nodes for a project?

Yes. This is an existing service: dedicated nodes, dedicated RPC endpoints, archive nodes and validators, with monitoring and 24/7 technical support.

What if the smart contract has a bug after deployment?

A contract already on mainnet cannot be edited directly, so we use upgradeable patterns where appropriate, with an emergency pause and constrained privileges. It is also why the testing and security review before deployment is never shortened.