005Web3 Agency

Web3 Agency

No offshore outsourcing. Work with a senior team of Web3 engineers based in North America.

Blkch002

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Web3 development

Web3 development services for startups and enterprises, from architecture to mainnet

Most new Web3 products are dApps: applications whose core logic runs on blockchain infrastructure instead of a private server. That one change removes the trusted middleman from payments, ownership records, and identity, which is why demand for solid dApp engineering keeps growing.

Ethereum is still the default for many teams because of its mature tooling, audited contract libraries, and the largest smart contract developer ecosystem.

It is not the only option. Depending on your throughput, privacy, and governance requirements, we also build on Hyperledger, Corda, Tezos, and EOS, run private blockchain deployments, and offer blockchain consulting to help you pick the right chain before you commit to one.

  1. Decentralized

    Web3 applications keep their state on a distributed ledger. No single operator can rewrite records, and there is no central database for an attacker to compromise.

  2. Faster payment processing

    Value moves directly on-chain, with no payment gateways or banking rails in the middle. Settlement is faster and per-transaction costs are lower.

  3. Pseudonymity

    Users authenticate with a wallet instead of an email and password, so applications can operate without collecting personally identifiable information at signup.

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Tooling

The Web3 stack we work in

We build dApps and smart contracts on proven foundations. The core stacks and SDKs our engineers work in daily:

  • Application layer: the MEAN stack, MongoDB, Express.js, Angular, and Node.js
  • Web3 SDKs: web3.js, web3.py, and ethers.js
  • Chains and platforms: Ethereum, Polygon nodes, Tezos, Tron, Stellar, EOS, Polkadot nodes, Hyperledger, Avalanche, and Corda

Throughout the build, our consultants flag which features belong on-chain and which are cheaper and safer kept off-chain. For regulated or high-volume workloads, our enterprise blockchain services add scalability and security review at every stage.

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    Concept to completion

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    The Web3 space moves fast. You want a partner who can take a blockchain product from the first architecture decision to production launch without handoffs or rework along the way.

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    Rapid development

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    We work in short agile cycles with working software at every sprint, which shortens total delivery time for a dApp built to your exact requirements.

Engagement models

Work with our Web3 team on your terms

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    Extended team

    Our engineers slot into your in-house development team, matching your tools, standups, and release process so nothing falls out of sync.

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    Dedicated team

    A dedicated squad of Web3 engineers designs, builds, and ships your decentralized application from scratch, end to end.

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    Project based

    You bring the idea; we scope it, price it, and deliver it. A dedicated project manager works alongside you and the engineering team from kickoff through launch.

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Industries

Web3 development by industry

We have shipped mobile and web decentralized applications across sectors, from healthcare to finance, including cryptocurrency exchange development for secure, high-throughput trading platforms.

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    Web3 for healthcare

    In healthcare, decentralized applications anchor medical records to the blockchain, giving providers a verifiable audit trail for how records are created, shared, and authenticated.

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    Web3 in fintech

    Decentralized finance (DeFi) replaces intermediaries with smart contracts for lending, trading, and settlement, and it is changing how financial products get built.

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    Web3 exchanges

    Uniswap and PancakeSwap set the pattern for decentralized exchanges: automated market makers with no custodial middleman. New DEX products keep building on that model.

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    Web3 marketplaces

    OpenSea and LooksRare showed what dApp marketplaces can be: platforms where users trade NFTs directly on-chain. We build NFT marketplaces like these from the ground up, contracts, indexing, and frontend included.

FAQ

Frequently asked questions

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  1. A rough analogy: the blockchain is the Internet, smart contracts are the protocols that run on top of it, and dApps are the websites users actually touch. The blockchain provides the shared, tamper-evident record, smart contracts encode the rules that execute automatically on that record, and decentralized applications give users an interface to interact with those contracts.
  2. Web2 is the Internet as most people use it today: companies run the servers and monetize user data in exchange for the service. Web3 applications run on blockchain networks instead, so users keep control of their own data, identity, and assets. Ethereum's developer documentation offers a detailed breakdown of the Web2 versus Web3 trade-offs for anyone going deeper.
  3. dApp marketing combines the standard playbook, SEO, paid media, and content, with Web3-specific channels like ecosystem grants, community platforms, and integrations with wallets and aggregators. Technical groundwork matters: a dApp built to meet search engine guidelines and Core Web Vitals launches ready to rank rather than needing remediation. Community trust signals, such as published audits and transparent documentation, carry more weight in Web3 than in most consumer categories.
  4. Yes, flexible engagement models are common in Web3 development. Teams can engage developers part time and scale hours up or down as the roadmap requires, which suits projects with bursty workloads such as pre-audit pushes or post-launch iteration. The trade-off is continuity: part-time arrangements work best when the codebase is well documented and at least one engineer holds long-term context.
  5. A few questions worth asking before signing with a dApp development agency: Does the team have blockchain engineers with real depth on platforms like Ethereum, Hyperledger, Corda, Tezos, EOS, and Tron? Are they fluent in the Web3 SDKs the product will depend on, such as web3.js, web3.py, and ethers.js? Where is the team based, and are the communication and quality trade-offs of offshore delivery acceptable? Budget honestly: deep blockchain expertise is scarce, and an unusually cheap bid usually means the expertise is not there.
  6. Cost depends almost entirely on scope. A dApp for internal processes with a few hundred users and a consumer product designed for millions have completely different feature sets and smart contract surfaces, and their budgets differ accordingly. The main drivers are contract complexity, the number of protocol and chain integrations, and audit scope. A short scoping exercise against a written spec produces far more reliable estimates than a feature list alone.
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Full-stack Web3 capability

What a North American Web3 team covers end to end

Web3 work spans protocol engineering, token systems, and the unglamorous infrastructure that keeps them running. Our Montreal-based team covers the full surface in-house, in your timezone, under NDAs and contracts that hold up in North American jurisdictions.
  1. Protocol and contract development

    Solidity and Rust development for DeFi protocols, token systems, staking, and governance, built with Foundry-based fuzz and invariant testing. We compose audited primitives where possible and reserve custom logic for the mechanics that make your protocol yours, which keeps audit scope and risk contained.
  2. Token design and launches

    Supply schedules, vesting contracts, distribution mechanics, and the operational side of a launch: deployment scripts, liquidity provisioning, and multisig custody of admin roles. We model the incentive system under pessimistic scenarios first, because tokenomics that only work in the bull case are not tokenomics.
  3. DeFi integrations

    Integrations with the protocols your product composes on: DEX routing, lending markets, liquid staking, and oracle feeds via Chainlink or Pyth. Every integration is fork-tested against live mainnet state so behavior under real liquidity conditions is measured before launch, not discovered after.
  4. NFT and digital asset systems

    ERC-721 and ERC-1155 systems beyond the mint page: metadata infrastructure on IPFS or Arweave, allowlist and phased sale mechanics, royalty handling across marketplaces, and on-chain provenance for physical or real-world asset pairings.
  5. Web3 infrastructure and indexing

    The read side of Web3 is its own discipline: subgraphs or custom indexers with correct reorg handling, redundant RPC strategies across providers, transaction relayers, and webhook pipelines that let your conventional backend react to on-chain events reliably.
  6. Audit readiness and security ops

    We prepare codebases for external audit, manage the remediation cycle, and stand up post-launch security operations: monitoring on privileged actions, anomaly alerts, timelocked upgrades, and rehearsed incident response. Security is a lifecycle, not a report.

Working with us

How a Web3 engagement runs without the offshore lottery

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    Technical discovery

    Senior engineers, the same ones who will build, run discovery: architecture review of anything existing, definition of the trust model and actors, and a written assessment of what belongs on-chain. You get a spec and a milestone-based estimate, not a sales deck followed by a bait and switch.
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    Design and specification

    We specify the contract system, token mechanics, and off-chain services before writing production code, including a threat model covering technical and economic attacks. Contentious decisions like chain selection or upgradeability get short written trade-off memos so your team decides with evidence.
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    Iterative build in your timezone

    Two-week sprints with demos on testnet, direct Slack access to the engineers, and code delivered into your repositories from day one. Overlapping working hours mean design questions get resolved in a conversation, not a 24-hour comment thread.
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    Audit, mainnet, and beyond

    We coordinate the external audit, remediate findings, execute a scripted mainnet deployment with keys handed to your multisig, and stay on for a stabilization window. Many clients keep a smaller retainer for protocol upgrades and monitoring, but nothing about the handover locks you in.

FAQ

Questions to settle before choosing a Web3 agency

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  1. The hourly rate is not the cost that matters in Web3. A contract vulnerability ships to an adversarial public network holding real value, so the price of a missed edge case dwarfs any rate difference. A North American team also brings timezone overlap for fast design decisions, enforceable contracts and IP assignment, and accountability that can be acted on. Offshore rates look attractive until a second team has to rewrite the code before the audit.
  2. The common models are fixed-scope milestones for defined builds and monthly team retainers for ongoing protocol work. Cost is driven by contract novelty, the number of protocol and chain integrations, and audit scope. A scoped discovery phase usually comes first so estimates rest on a real specification rather than a guess, and that specification remains useful whichever team ends up building.
  3. No. Development teams should build to audit-ready standards with full test coverage and documented threat models, but the audit itself must be performed by an independent third-party firm, because auditing your own code is a conflict of interest. The developer's role is to prepare the audit package, answer auditor questions, and manage findings through remediation and re-review. The audit should be budgeted as a separate line item and booked early, since reputable firms have queues.
  4. Yes, codebase takeovers and rescues are a significant share of Web3 engineering work. A takeover starts with a structured review of the contracts, tests, deployment scripts, and key management, grading what is salvageable against what must be rewritten. Common findings are missing test coverage, unsafe upgrade patterns, and admin keys held by a single externally owned account. A written assessment gives the owner a clear picture regardless of who performs the fix.
  5. The practical approach is to build so that legal strategy has room to move: transfer restriction hooks that can be enabled or removed, clean separation between the protocol and any yield-bearing components, complete audit trails, and documentation of who controls what. Engineering teams should work alongside counsel rather than replacing them, and design choices that tend to attract regulatory attention should be flagged before they are locked into immutable contracts.
  6. Week one is typically discovery: architecture sessions, review of existing code and documentation, and alignment on the trust model. Weeks two and three produce the specification, threat model, and milestone plan. By week four a healthy engagement has either working prototype contracts on testnet or, for larger systems, a validated architecture with the first sprint underway. Engineering output should appear in the first month, not just a slide deck.