Custom blockchain development company

CIDT works as an embedded engineering partner: we integrate into the client's team, contribute to decisions, and take responsibility for outcomes. Systems we build are designed for production from the start, and we stay involved after launch. Over 110 projects delivered. A significant share of our clients return for the next one.

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Blockchain development services we provide

Our work covers the full delivery cycle — protocol design, smart contract development, infrastructure, security, and long-term support. Each engagement is scoped around the client's product, target networks, and production environment.
Blockchain Development Services

Product & protocol development

Smart contract Development Services

Smart contracts

Design, development, and optimization of secure smart contracts in Solidity, Rust, and Move - with gas efficiency, audits readiness, and upgradeability in mind.

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DApps Development Services

dApps development company

End-to-end dApp development with React frontends, blockchain backends, and production-ready DevOps for scalable deployments.

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KYC and KYB integration

Stablecoin development company

We build corporate-grade stablecoins backed by fiat, crypto, or commodities, tailored to your business model and compliant with industry standards. Book a consultation and get a tailored offer within 48 hours.

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Protocols Development Services

Custom blockchain development

Design and development of custom L1/L2 blockchains, rollups, and consensus layers using Cosmos SDK, Ethermint, Avalanche Subnets, and EVM-compatible architectures.

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Crypto wallets Development Services

Crypto wallet development

Development of secure crypto wallets for Web, iOS, and Android - focused on usability, key management, and transaction safety.

Indexing services

RWA tokenization development company

We help you tokenize real-world assets — real estate, bonds, funds, commodities, carbon credits, private equity — turning illiquid holdings into secure, fractional, globally tradable digital tokens.

block explorers

Blockchain explorer development

Custom block explorers for visualizing transactions, smart contracts, and network activity across blockchain ecosystems.

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cross-chain bridges and integrations

Cross-chain bridge development company

Cross-chain bridge development and integrations using LayerZero, Axelar, IBC, and Avalanche IBC for secure asset and data transfers.

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Infrastructure Services

Blockchain infrastructure services

Validator management and staking services for proof-of-stake blockchains

Validator management & staking

Validator setup, staking operations, and ongoing monitoring for PoS networks - focused on uptime, slashing protection, and stable rewards.

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Blockchain network deployment and infrastructure setup services

Blockchain network deployment

Blockchain network deployment and automation using infrastructure-as-code (Terraform, Ansible) with production monitoring via Grafana and Prometheus.

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Blockchain API node hosting with scalable read-only access

Dedicated blockchain node hosting

High-availability API node hosting with caching and horizontal scaling for fast, reliable blockchain data access.

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Blockchain performance optimization and smart contract efficiency

Blockchain performance optimization

Blockchain performance optimization including TPS benchmarking, load testing, and smart contract gas efficiency improvements.

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Blockchain monitoring and performance dashboards for real-time metrics

Blockchain monitoring & real-time dashboards

Real-time monitoring and performance dashboards covering network health, validator uptime, and transaction metrics.

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DevOps and security operations for blockchain projects

Blockchain DevOps services

We handle CI/CD pipelines, infrastructure-as-code, and automated deployments so your team ships faster and scales without friction. From initial setup to ongoing maintenance, we manage your entire blockchain infrastructure across any environment — reducing costs, lowering latency, and cutting time-to-market. Focus on building your product while we keep the infrastructure running seamlessly.

Blockchain Security & Compliance Services

Security & compliance services

Smart contract audit and remediation services for blockchain applications

Smart contract audits & remediation

Smart contract audits and remediation to identify logic flaws, access control issues, and security vulnerabilities - with actionable fixes and validation.

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Penetration testing services for blockchain and Web3 infrastructure

Penetration testing

Blockchain-focused penetration testing simulating real-world attacks - from infrastructure misconfigurations to application and protocol-level logic flaws.

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Blockchain compliance readiness for GDPR, SOC 2, and ISO standards

Blockchain & crypto compliance readiness

Compliance readiness for blockchain and Web3 projects, aligned with GDPR, SOC 2 Type II, ISO, and industry-specific security standards. For DeFi-specific requirements, see our DeFi development services.

Blockchain monitoring and incident response services

Blockchain monitoring & incident response

Continuous monitoring and incident response with real-time dashboards, alerts, and runbooks for smart contracts, validators, and blockchain infrastructure.

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Blockchain security services

Smart contracts, Web3 apps, and blockchain infrastructure each carry unique vulnerabilities that motivated attackers actively target. We audit your entire ecosystem — from smart contract code to infrastructure configurations — delivering detailed reports with clear, actionable remediation steps. Protect your protocol, your users, and your reputation before vulnerabilities become costly mistakes.

KYC/KYB integrations

Compliant onboarding is the foundation of every trusted blockchain product — we integrate battle-tested KYC/KYB solutions like Sumsub to verify users and businesses seamlessly. Fast, accurate identity checks reduce fraud risk while keeping your onboarding flow smooth for legitimate users. Go live with confidence, fully aligned with regulatory requirements from day one.

Attestations, identity management & verifiable credentials

Give users and organizations a secure, portable digital identity they truly own — built on verifiable credentials and on-chain attestations. We implement end-to-end identity management solutions that enable trust between parties without exposing sensitive data. Build compliant, privacy-preserving identity flows that scale across your entire ecosystem.

Web3 & blockchain development solutions

We design, build, and operate secure blockchain systems - from smart contracts and infrastructure to production-ready Web3 products.
NFT marketplace and Web3 product development services

NFT Projects and Marketplaces

We design and build full NFT platforms as part of our blockchain development services - from smart contracts to marketplaces and production launch.

Cross-chain interoperability solutions for Web3 and blockchain ecosystems

Cross-Chain Interoperability Solutions

Cross-chain interoperability solutions that enable blockchain products to operate across multiple networks and ecosystems.

Real world asset tokenization services on blockchain

RWA (Real World Asset) Tokenization

Real-world asset (RWA) tokenization as part of enterprise blockchain development - turning off-chain assets into compliant on-chain representations.

DeFi protocol and decentralized finance solution development

DeFi Protocols and Solutions

DeFi protocol development and scaling services - from smart contract architecture to production-ready blockchain systems.

DAO governance and on-chain voting system development

DAO Governance and Voting Systems

DAO governance and voting system development that brings structure, transparency, and control to decentralized ecosystems.

Blockchain payment solutions and crypto transfer systems

Payment Solutions and Transfers

Blockchain payment solutions and transfer systems that simplify crypto payments for real users and businesses.

Decentralized identity, attestations, and verifiable credentials solutions

Attestations, Identity Management & Verifiable Credentials

Identity, attestation, and verifiable credential solutions that add trust and compliance to blockchain applications.

Ready to scope your project?

Share your project brief and we'll send a rough estimate, timeline, and delivery plan within 48 hours.
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Blockchain development projects we’ve delivered

110+ projects delivered across DeFi, infrastructure and Web3 platforms.

Blockchain Infrastructure Deployment & Validator-as-a-Service

CIDT designed and deployed ONINO’s blockchain infrastructure with validator architecture, automation, and non-custodial staking — delivering a stable, production-ready network.

Blockchain Network Deployment
IaC (Terraform / Ansible)
Validator as a Service
Non-Custodial Staking

Cross-Chain IBC Integration for Avalanche Blockchain

CIDT engineered a cross-chain integration connecting Avalanche Layer 1 with Cosmos through light clients, relayers, and custom blockchain infrastructure. The project required deep protocol-level work to enable secure interoperability between ecosystems.

IBC Protocol Implementation
Light Client Development
BLS Cryptography
Cross-Chain Bridge Engineering
Protocol Testing Infrastructure

Genesis Block – Trading Automation & Infrastructure

CIDT partnered with Genesis Block to develop and maintain blockchain infrastructure supporting automated trading operations. From validator management to monitoring dashboards, the solution focused on reliability, performance, and operational efficiency.

Validator Infrastructure
Algorithmic Trading Infrastructure
Performance Monitoring & Dashboards
Blockchain Technical Consulting

Web3 Mobile Wallet Development

CIDT developed a production-ready mobile wallet for iOS and Android, combining blockchain integrations with strong security architecture and compliance features. The focus was on usability without sacrificing technical robustness.

React Native Mobile
Blockchain Integration
Wallet Security Architecture
KYC / Compliance

Web3 Survey Monetization App

CIDT delivered a full-cycle Web3 application enabling survey monetization through blockchain-based licensing and fraud-prevention mechanisms. The solution combined UX, backend logic, and decentralized integrations to support rapid MVP delivery.

Rapid MVP Delivery
Arweave AO Integration
Data Licensing
Fraud Prevention
GDPR Infrastructure

Blockchain technology stack

A practical stack covering blockchain protocols, smart contract languages, dApp frameworks, and DevOps tooling used in our delivery.

Blockchains & Protocols

Ethereum blockchain development and smart contract solutions
Ethereum
Avalanche blockchain development for high-performance Web3 applications
Avalanche
Polkadot blockchain development for interoperable Web3 ecosystems
Polkadot
Cosmos blockchain development using IBC and modular architecture
Cosmos
NEAR Protocol blockchain development for scalable Web3 applications
NEAR
Polygon blockchain development for scalable Ethereum applications
Polygon
Arbitrum Layer 2 development for Ethereum scalability
Arbitrum
Optimism Layer 2 blockchain development for Ethereum scaling
Optimism

Smart Contracts

Solidity smart contract development for Ethereum and EVM-compatible blockchains
Solidity
CosmWasm smart contract development for Cosmos-based blockchains
CosmWasm
Move language for secure smart contracts on modern blockchain networks
Move
Rust

dApp

React.js framework for decentralized application development
ReactJS
Vue.js framework for Web3 and dApp front-end development
Vue
Angular framework for enterprise blockchain applications
Angular
Svelte framework for lightweight decentralized applications
Svelte
Next.js framework for Web3 applications and dApp frontends
Next.js

DevOps

AWS cloud infrastructure for blockchain and Web3 projects
AWS
Microsoft Azure cloud services for blockchain infrastructure
Azure
Google Cloud Platform for blockchain and distributed systems
GCP
Terraform infrastructure as code for blockchain deployment
Terraform
Ansible automation for blockchain DevOps and infrastructure management
Ansible

How We Work

Clear process. Predictable delivery. Real results
01

Agile planning

Before writing a single line of code, we align on everything that matters - from product vision to production-ready blockchain architecture.

  • Storyboarding & user journey mapping
  • Technical discovery and architecture design (EVM / non-EVM blockchains)
  • Tokenomics validation and smart contract architecture
  • UI/UX prototyping for your Web3 application or dashboard
  • Agile estimation and team setup
  • Proof of concept or testnet deployment (if needed)

Outcome: a clear delivery plan, realistic timeline, and confidence that your blockchain MVP or protocol module is built on solid technical foundations.

02

Sprint delivery (every 2 weeks)

Each sprint brings measurable progress - and a UAT-ready blockchain build.

  • Sprint planning & backlog prioritization
  • Design and smart contract development (Solidity / Rust)
  • Integration with blockchain oracles, wallets, and cross-chain bridges
  • Manual and automated QA testing
  • Internal review + client demo
  • Deployment to testnet or mainnet-ready blockchain environment

Outcome: working software every sprint - whether it’s a DeFi protocol, NFT marketplace, or enterprise blockchain module.

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03

Post-launch support

We stay with you after release to ensure long-term reliability and scalability.

  • Continuous monitoring of on-chain activity, nodes, and smart contracts
  • Critical issue resolution and incident response
  • DevOps, infrastructure & CI/CD pipeline management
  • Product and roadmap planning for new features
  • Emergency response for protocol, validator, or bridge security events

Outcome: your Web3 product stays secure, stable, and ready to scale.

04

Continuous improvement

We continuously refine both the product and the process.

  • End-of-sprint demos and retrospectives
  • Backlog grooming with your input
  • Regular status reports and roadmap reviews
  • Smart contract and infrastructure optimization cycles

For us, working blockchain software and measurable outcomes are the only KPIs that matter - not hours logged.

What our clients say

Emet Research blockchain project developed by CIDT

Freeman Lewin

Founder & CEO Emet Research

Consider It Done Technologies successfully delivered the MVP in two months, meeting our expectations. The team was responsive, worked independently, and delivered on time. Their ability to ideate through issues and the overall value for money were hallmarks of their work.

View Case Study
Genesis Block trading infrastructure built with CIDT

Samuel E. Proctor

Chief Executive Officer / CEO Genesis Block

CIDT has been an invaluable technology partner for Genesis Block, offering consulting and engineering expertise to automate our trading strategies and optimize system architecture. Their guidance on blockchain tooling and asset management has enhanced our operations.

View Case Study

Kai Firschau

Co-Founder & CTO Onino

We have been collaborating with CIDT for years and are excited to strengthen our partnership with a new joint project. Their technical expertise, especially that of CTO Ramil, is outstanding. The quality of work is top-notch, and the team is always responsive. CIDT has become an integral part of our team for all things related to blockchain infrastructure.

View Case Study

Sergey Nekrasov

Head of Product

Working with CIDT has been a smooth and collaborative experience. Their team delivered a high-quality frontend for the Guardian Wallet, integrating seamlessly with our backend and ensuring consistent performance across iOS and Android. We valued their structured approach and transparent communication. CIDT has proven to be a reliable long-term partner.

View Case Study

Stephen Bevins

Core contributor

I was very pleased with the work of CIDT, they were able to quickly understand our technology needs and provided us with exactly what we needed along with some things we didn't even know we needed.

View Case Study

See similar work

Explore blockchain case studies: infrastructure, integrations, and production-grade delivery.
View portfolio

Frequently asked Questions

What is custom blockchain development?

Custom blockchain development means designing and building blockchain systems around your specific product requirements — rather than adapting generic solutions. This includes smart contract architecture, protocol design, infrastructure setup, and integrations shaped by your business logic, compliance requirements, and target networks.

How long does it take to build a blockchain product?

Scope determines timeline. A focused MVP — smart contracts, basic frontend, testnet deployment — typically takes 6 to 12 weeks. Production-grade systems that include infrastructure, security audits, and multi-chain integrations usually run 3 to 6 months. We send a rough estimate and delivery plan within 48 hours of receiving a project brief.

What's the difference between blockchain development and Web3 development?

Blockchain development focuses on the protocol layer — consensus mechanisms, smart contracts, validators, and node infrastructure. Web3 development covers the full product stack: frontend interfaces, wallet integrations, backend services, and on-chain logic working together. In practice, most production systems require both, and CIDT handles the full scope within a single engagement.

Do you work with early-stage startups or only with established teams?

Both. Early-stage founders typically need to build and validate quickly with limited resources. Established fintech and Web3 teams usually need a reliable partner for complex, long-running delivery. The engagement model adapts to the stage and the scope.

How do you handle smart contract security?

Security is part of the development process, not a final step. Contracts are written with audit-readiness in mind, reviewed internally before deployment, and tested under realistic conditions. For production systems, we coordinate with third-party auditors and set up monitoring and incident response as part of the delivery.

What blockchain networks do you build on?

We have production experience across Ethereum, Avalanche, Polkadot, Cosmos, NEAR, Polygon, Arbitrum, Optimism, Sui, Fantom, Algorand, and others. If a project requires a specific network, we assess hands-on experience and scope requirements before committing to a timeline.