# Web3 & Blockchain

> Smart contracts, decentralised applications, wallets and programmable payments. Technical design and implementation for blockchain products.

URL: https://www.arcum.com.au/services/web3-blockchain
Language: en

**Build the product around ownership.** Blockchain systems with a useful purpose, from digital assets to payments and connected applications.

## What we do

We help teams decide where blockchain belongs in a product, then design and build the contracts, backend and user experience together. Our technical range includes EVM chains and Solana, DeFi, tokenised assets and NFT applications.

### Smart contracts

Contract design, implementation and testing, including Solidity, Hardhat and ERC-20, ERC-721 and ERC-1155 token standards.

### DApps & wallet integration

Wallet connection, signing and transaction flows linked to a usable web or mobile application, including Ethers.js, Viem and Wagmi integrations.

### Tokenomics & protocol design

Technical modelling of issuance, vesting, staking, incentives and liquidity mechanisms, with clear assumptions and administrative controls.

### Programmable payments

Stablecoin payments, shared-wallet permissions and paid API access, including x402 payment flows and revenue splitting.

### Marketplaces & tokenised assets

Minting, listings, digital collectibles and real-world asset workflows connected to the product’s ownership and access requirements.

### Privacy & trading infrastructure

Encrypted storage, wallet-based access, non-custodial product architecture and integrations for exchanges and automated liquidity strategies.

## How we work

We define the ownership model, permissions and transaction flows before implementation. Contract testing, deployment planning and coordination with independent reviewers form part of the agreed delivery scope.

1. **Agree the direction**: Understand the problem, choose the priorities and agree the scope before the work begins.
2. **Make it together**: Work directly with the people doing the work. See progress, test ideas and give feedback as it develops.
3. **Put it to work**: Review the details, deliver the work and make sure your team has what it needs to take it forward.

## Frequently asked questions

### What does Arcum’s Web3 & Blockchain service cover?

We help teams decide where blockchain belongs in a product, then design and build the contracts, backend and user experience together. Our technical range includes EVM chains and Solana, DeFi, tokenised assets and NFT applications.

### What’s included?

Typical work includes smart contracts, dApps & wallet integration, tokenomics & protocol design, programmable payments, marketplaces & tokenised assets, and privacy & trading infrastructure. We agree exactly what’s in scope before anything starts.

### How much does it cost?

It depends on the scope. We agree the scope and confirm a final quote before any work begins.

### How does a project with Arcum run?

Agree the direction: Understand the problem, choose the priorities and agree the scope before the work begins. Make it together: Work directly with the people doing the work. See progress, test ideas and give feedback as it develops. Put it to work: Review the details, deliver the work and make sure your team has what it needs to take it forward.

## Explore more

- [Backend, Cloud & DevOps](https://www.arcum.com.au/services/backend-cloud)
- [AI Agents](https://www.arcum.com.au/services/ai-agents)
- [CTO & Technology Advisory](https://www.arcum.com.au/services/technology-advisory)

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- Contact: https://www.arcum.com.au/contact
- Packages: https://www.arcum.com.au/quote-builder
- WhatsApp: https://wa.me/34684741318