Blockchain Solutions
Blockchain products built for real users
We build on-chain products where a shared, tamper-proof ledger solves a real problem: payments, asset tracking, digital ownership and supply chains. Every contract is tested and audited before it touches mainnet.
- Contract test coverage before audit
- 100%
- Ecosystems we ship on
- EVM + Solana
- Documentation on every contract
- Audit-ready
What we deliver
Blockchain Solutions, end to end
Smart Contract Development
Solidity and Rust contracts with full test coverage and third-party audit support.
Decentralized Applications (DApps)
Web and mobile front ends that make on-chain actions feel as simple as a normal app.
NFT Development & Marketplaces
Minting, royalties, marketplaces and token-gated experiences.
Tokenization & Crypto Wallets
Asset tokenization, custodial and non-custodial wallets, and fiat on-ramps.
Blockchain Consulting & Integration
Find out whether blockchain fits your use case, then connect it to existing systems.
Supply Chain & Finance Solutions
Traceability, settlement and audit trails for logistics and financial workflows.
How it works
A clear path from kickoff to launch
Every engagement runs in short cycles with a demo at the end of each one, so you see progress weekly rather than at the end.
- 01
Validate
Confirm the use case and pick the right chain.
- 02
Architect
Token model, contract design and threat modelling.
- 03
Build
Contracts, indexers and front end, on testnet first.
- 04
Audit & Launch
External audit, mainnet deploy and monitoring.
Tools & technology
The stack we trust
We choose tools for the job and for your team’s ability to maintain them after we hand over.
- Solidity
- Rust
- Hardhat
- Foundry
- Ethereum
- Polygon
- Solana
- Base
- Ethers.js
- The Graph
Related work
Recent projects
FAQ
Common questions
Sometimes you don't, and we'll tell you. If a regular database does the job, it's cheaper and faster.
Contracts use proven patterns, are covered by automated tests and fuzzing, and are reviewed by an independent auditor before launch.
Ethereum and EVM chains such as Polygon, Base and Arbitrum, plus Solana.
More in Build
Related services
Let’s talk Blockchain Solutions.
Tell us what you’re building and where you need help. We reply within one business day with honest next steps.
hello@crowdcarry.com