Blockchain development services.
Engineered for audits and real users.

• For founders

  Smart Contract MVP Sprint

  From spec to audit-ready contracts on testnet in six weeks.

  • Solidity contracts on top of OpenZeppelin's audited primitives
  • Threat model, invariant tests, and fuzz suite written alongside the code
  • Testnet deployment with a dApp frontend wired to WalletConnect on day one
  Book a discovery call
• For existing products

  Wallet Integration Sprint

  WalletConnect, custody APIs, and on/off-ramps in four weeks.

  • WalletConnect v2, AppKit, and the wallet UX patterns users expect today
  • Custody integration via Fireblocks, Privy, or Magic, picked per the regulatory shape
  • On-ramp and off-ramp via licensed providers, with the KYC flow your jurisdiction needs
  Book a discovery call
• For DeFi teams

  Protocol Hardening Sprint

  Audit prep, formal verification, and gas optimization before mainnet.

  • Audit-firm-ready documentation, threat model, and known-issues log
  • Foundry invariant tests and selective formal verification on the critical paths
  • Gas profiling and storage-layout review for the deploy-time cost ceiling
  Book a discovery call

Where blockchain earns its place.

1. 01 · Real-world assets

   Tokenized real-world assets

   On-chain representation of off-chain value: real estate, invoices, commodities, carbon credits. The hard work is the off-chain custody, oracle, and legal wrapper; the on-chain part is the easy half.

2. 02 · Fintech

   Wallet & custody for fintech

   Embedded wallets, MPC custody, fiat on-ramps and off-ramps for a fintech app that needs to touch crypto without becoming a crypto exchange. Regulated where the jurisdiction demands it.

   See our SaaS Platforms practice

3. 03 · Payments

   On-chain B2B and cross-border payments

   Stablecoin rails for cross-border B2B payments, with the compliance plumbing (Travel Rule, screening, reporting) the regulator expects and the user experience that does not feel like a hostage situation.

4. 04 · Utility NFTs

   NFTs that actually do something

   Event tickets, access passes, certificates, in-game items, supply-chain provenance. NFTs as the underlying primitive for utility, not the speculative top of the funnel.

5. 05 · DeFi

   Serious DeFi protocols

   Lending markets, DEXes, staking, liquid restaking. The protocols where security and audit posture are the product. Foundry invariant tests, selective formal verification, gas-optimized deploy.

   See our DevOps practice

6. 06 · Internal blockchain

   Provenance & supply-chain ledger

   Permissioned or public chain used as an immutable audit log for supply chain, document provenance, or regulatory reporting. The blockchain is the boring middle, not the marketing top.

• “Contracts went into audit and came back with one informational finding. The remediation cycle that usually takes three weeks took four days. The audit firm asked us who wrote the test suite.”

  Devansh Shroff

  Founder, Greylock Protocol

• “Wallet integration that actually worked across the seventeen wallet configurations our users brought us. Connect success rate moved from sixty percent to ninety-six in the first release.”

  Inès Lefèvre

  CTO, Coppice Pay

• “They talked us out of launching a token. Three months later the equivalent project that did launch a token is in regulatory trouble. The protocol we shipped instead is live, audited, and used.”

  Mateo Rivas

  Co-founder, Tidewater Markets

• OpenZeppelin Contracts

  The most-audited library of reusable smart contract primitives. We build on top, only writing custom logic where the standard does not cover it. Every deviation is documented and justified.

  Official source

• Ethereum Improvement Proposals

  EIPs and ERCs (ERC-20, ERC-721, ERC-1155, ERC-4337) are the standards your contracts should interoperate with. Followed at the version the rest of the ecosystem ships.

  Official source

• Smart Contract Security Best Practices

  ConsenSys's working compendium of attack patterns and defenses. Reviewed at design time so we are defending against named threats, not abstract ones.

  Official source

• OWASP Smart Contract Top 10

  The OWASP working group's top smart contract vulnerabilities. Mapped to our audit-prep checklist and the test suite that gates mainnet deployment.

  Official source

• Trail of Bits Building Secure Contracts

  Trail of Bits's published guidance on writing contracts that are easier to audit. Followed because our audit firms expect it, and because it is good advice independently.

  Official source

• EU MiCA

  Markets in Crypto-Assets Regulation. Applies to crypto-asset service providers in the EU. We design tokens, custody flows, and exchange integrations so the MiCA path is open from day one.

  Official source

• FATF Travel Rule

  The Financial Action Task Force's Travel Rule applies to crypto transfers above the regional threshold. We integrate with the Travel Rule networks (TRP, Sumsub, Notabene) where the flow demands it.

  Official source

• OWASP MASVS (mobile)

  Mobile Application Security Verification Standard. Crypto wallets are mobile-first; the security baseline that applies to a wallet is more stringent than to a typical mobile app.

  Official source

Common questions, answered.

• How long does a blockchain project take?+

  Smart Contract MVP Sprint: six weeks to audit-ready contracts on testnet. Audit cycle: three to six weeks depending on contract complexity and the audit firm's queue. Mainnet launch: eight to sixteen weeks total from first call. Ongoing: monitoring and incident response retainer for the post-launch operational risk.

• What does a blockchain project cost?+

  Price varies with the scope of the work. The productized sprints are fixed-price for the scope they cover. A full blockchain product is quoted after the discovery call, with the number driven by contract complexity, audit firm choice, wallet and chain matrix, regulatory shape, and the ongoing monitoring commitment. The discovery call itself is free; you accept the estimate or you do not.

• Which chains do you build on?+

  EVM chains by default (Ethereum, Polygon, Base, Arbitrum, Optimism) because the tooling, audit pool, and wallet ecosystem are the deepest. Solana when the use case rewards parallel execution or the team is already in the Solana ecosystem. Cosmos for app-chain economics. Multi-chain only when the product genuinely benefits, not for the marketing copy.

• Do you build NFT marketplaces and tokenize real-world assets?+

  Yes, both. NFT marketplaces (minting, marketplace contracts, royalty flows, IPFS-pinned metadata, the wallet UX a non-crypto user can follow) and real-world-asset tokenization (off-chain custody, oracle integration, legal wrapper, on-chain representation) are within scope. The harder half in either case is off-chain (custody, legal, oracle reliability); the on-chain part is where audited primitives do most of the work.

• Do you handle smart contract audits?+

  We prepare for and run the audit cycle. We do not market ourselves as an audit firm because we are not an independent third party for our own work. We engage Trail of Bits, OpenZeppelin, Halborn, ChainSecurity, or Spearbit based on the contract shape and the audit-firm queue, run the remediation cycle, and ship the audit-corrected build to mainnet.

• What is your stance on Web3 and crypto hype?+

  Skeptical. Most blockchain projects do not need a blockchain. The ones that do, deserve serious engineering. We will tell you in the discovery call if the use case does not earn the on-chain component; that conversation has saved more than one team from a year of regret.

• Solidity, Vyper, or Rust?+

  Solidity by default on EVM (deepest tooling, biggest audit pool, most reference contracts). Vyper for contracts where the readability and security guarantees justify the smaller ecosystem. Rust for Solana, Cosmos, or any non-EVM chain. The discovery call picks the language based on the chain and the team.

• How do you handle wallet integration and custody?+

  WalletConnect v2 and AppKit as the default wallet bridge. Custody via Fireblocks, Privy, Magic, or self-custody patterns picked per the regulatory shape and user UX. Tested across the wallet matrix that matters, including hardware signers and account abstraction. Connect-success rate measured in production.

• Do you offer ongoing maintenance and incident response after mainnet?+

  Yes. Post-launch retainers cover on-chain event monitoring, anomaly alerting, contract upgrade cycles (where the contracts are upgradeable), and the incident response runbook for the first exploit attempt. Mainnet launch is not the end of the engagement; it starts the operational phase where most real-world risk lives.

• Who owns the contracts, the keys, and the deploy pipeline?+

  You. From day one. Contracts in your GitHub organisation, deploy keys in your secret manager (or hardware wallet), multisig admin set up with your signers. We push to your repos, sign with your keys, and document everything in your wiki. No proprietary platform you cannot leave; no ongoing dependency on us unless you want one.