Crypto Wallet Development for Web3 Products

What crypto wallet does your product need?

A crypto wallet must match the user scenario and the project's responsibility model. Before development, we define who manages the keys, what actions are available in the first version, and where the boundary lies between the wallet and the rest of the product.

A custodial option means the project organizes key storage and management. A non-custodial option is built around user-managed keys. This is not just a UI setting: the choice affects architecture, access processes, and launch preparation requirements. The classification of a custodial product before market release should be verified with your legal advisor.

At the kickoff meeting, we discuss decisions such as:

• Core user actions: creating a wallet, transferring funds, swapping, or connecting to an app.
• Target networks and assets needed for the first release.
• Platform: browser extension, mobile app, or Telegram Mini App.
• Backend, monitoring, and future development requirements.

The result is a clear MVP scope and a list of decisions that cannot be postponed until the end of development. If the wallet is part of a dApp, we agree on the boundaries between the wallet interface and dApp development in advance. For overall product architecture, you can also consider Web3 solution development.

What to choose: extension, app, or Telegram Mini App

The wallet platform is chosen based on where the user starts the scenario and what actions they need. The same product may use shared components, but the interface, integrations, and checks for different environments are agreed upon separately.

To compare formats concretely, describe the user journey from first opening to the target action. Then note where they see the balance, confirm an operation, and return to the main product. For a mobile scenario, you can agree on scope in advance with the mobile app development team; for integration with a bot, with the Telegram bots and Mini Apps direction.

Do not automatically include all platforms in the first version. First confirm one main scenario, then add other formats if they are needed by the audience and supported by the chosen architecture.

How we design key management and security

Wallet security starts with access architecture, not with the final check before release. At the design stage, we clarify the key model, user actions, and components involved in processing operations.

For discussion with the team, prepare answers to several questions:

• Which actions does the user perform independently, and which are available to the product operator?
• What access recovery scenarios are provided by the chosen model?
• Which operations require explicit confirmation in the interface?
• What data and events does the backend and monitoring need to support the product?

Next, we define component responsibilities and include security review preparation in the work plan. If wallet operations depend on separate on-chain logic, interfaces and requirements must be coordinated with smart contract development. This makes it easier to submit a related scenario for review rather than a separate screen without context.

Ask the team to show how each key action flows through the user interface and technical components. For acceptance, it is useful to compare approved scenarios with a demo, check handling of expected states, and get a list of known implementation limitations. This approach makes the review substantive and helps the team plan further improvements.

What features and integrations are included in development

The scope of crypto wallet development is determined by the agreed scenarios, chosen networks, and target platform. We decompose the product into user interface, key management logic, operations, server side, and maintenance so you understand exactly what is delivered at the end of the project.

The scope may include:

• User flow and wallet interface design.
• The chosen key management model and its implementation.
• Support for agreed networks and multichain scenarios.
• Transaction and swap flows, if needed by the product.
• Browser extension, mobile version, or Telegram Mini App in the agreed scope.
• Backend, monitoring, and preparation of materials for security review.

At the start, we separate mandatory features for the first version from tasks for the next stage. For example, if the project needs its own token, coordinate with the team on token creation and deployment: the wallet and token must support common user scenarios. If the product includes additional modules, define them as separate integrations rather than an implicit extension of the initial scope.

Before work begins, request a feature list by platform, a list of supported networks, an integration diagram, and acceptance criteria. With these materials, you can compare the proposal with the task and see which features are included in the first delivery and which require separate agreement.

How wallet development and acceptance work

Work starts with scenario description and ends with delivery of the agreed result with verifiable criteria. Before project estimation, we conduct a short task analysis: the team clarifies the platform, key model, networks, integrations, and the goal of the first version.

The typical sequence is:

• Agree on product scenarios, platform, and first version boundaries.
• Define architectural decisions for keys, networks, and backend.
• Design the interface and agree on transaction flows.
• Implement features and integrations according to the approved scope.
• Test scenarios, prepare results for delivery, and discuss next steps.

For timeline estimation, the completeness of input data and the number of platforms are more important than the general project name. Prepare a description of the target audience, main user actions, list of required networks, exchange feature requirements, and known integration constraints. If some decisions are still open, note this: we will first agree on what needs to be defined during the design phase.

Acceptance is conveniently tied to the scenarios from the initial description: walk through the user journey, compare implemented features with the agreed list, and verify delivery of project component documentation. The MediaHype team conducts this review using a unified acceptance checklist so that status and open items are visible before final delivery. After agreement, you receive a confirmed scope of work and a plan for the next stage.

What to prepare for wallet launch

Launch planning is easier when product, technical, and organizational decisions are gathered before the main implementation begins. Prepare a brief project description, target platforms, list of required networks, and a list of actions the user should perform in the first version.

Before estimation, it is also useful to gather:

• Mockups or interface examples, if available.
• A description of the key management model and expected user roles.
• A list of integrations without which the main scenario does not work.
• Contact information for a technical specialist who can coordinate architectural questions.
• Requirements for backend, monitoring, and security review preparation.

If you are still comparing custodial and non-custodial architecture, start with responsibility distribution and expected user experience. If the choice has already been made, provide the scenario and platform description: this allows moving to scope estimation without revisiting basic inputs.

Note separately that app store approvals and blockchain network decisions are not controlled by the development team; we cannot promise their timelines or outcomes. We are responsible for the agreed implementation, testing of planned scenarios, and delivery of the result in the stated scope.

Send us your product description, target platform, chosen networks, and list of key user actions. In response, we will clarify missing inputs and propose a first version scope.

Prices

Starting prices in USD. Custom bundles and volume discounts on request. Payment in USDT, USDC, BTC, ETH, SOL, TON or your project token.

How it works

1. Task analysisWe clarify the audience, platform, user actions, and goal of the first version. We note decisions that still need to be made.
2. Architecture agreementWe define the key management model, required networks, integrations, and backend and monitoring requirements.
3. DesignWe agree on the interface and operation flows so that implementation and acceptance criteria are clear before main development.
4. Development and testingWe implement the approved scope and test the agreed user scenarios together with the required integrations.
5. DeliveryWe compare completed features against acceptance criteria, deliver project materials, and discuss next tasks.