Custom blockchain development services

• 01ERC-721 · ERC-1155 · Metaplex

  NFT collection smart contracts

  NFT collections with public and allowlist mint, EIP-2981 royalties, IPFS/Arweave metadata and delayed reveal. Optimized with ERC-721A for gas-efficient batch minting.

  • Merkle tree allowlist
  • On-chain EIP-2981 royalties
  • Verifiable random reveal
  • Mint page ready for your site

  from €690 + VAT

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• 02ERC-20 · SPL · Token-2022

  Custom tokens

  Launch your own token with exactly the features you need: minting, burning, pausing, permit (gasless approvals), transfer taxes, anti-whale limits and built-in vesting.

  • Built on OpenZeppelin
  • Verified on the explorer
  • DEX & CEX ready
  • Logo and metadata included

  from €490 + VAT

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• 03Solidity · Rust · Anchor

  Custom smart contracts

  Bespoke, trustless business logic: escrows, conditional payments, subscriptions, verifiable lotteries, reward systems and whatever you can imagine, with tests and documentation.

  • Upfront functional spec
  • 95%+ test coverage
  • Upgradeable patterns (UUPS)
  • Post-deployment support

  from €1,500 + VAT

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• 04Airdrops · Multisender · Payroll

  Low-gas bulk transfers

  Distribute native coins, ERC-20 tokens or NFTs to thousands of wallets in just a few transactions. We batch transfers to slash gas costs on any network.

  • Thousands of recipients per batch
  • CSV or Merkle claim airdrop
  • Verifiable delivery report
  • Lowest-cost L2 networks

  from €390 + VAT

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• 05Notarization · Proof of existence

  Blockchain data certification

  Prove a document existed at a given date and has not been altered. We anchor its SHA-256 fingerprint on-chain: your files never leave your device and the proof is public and immutable.

  • SHA-256 cryptographic fingerprint
  • Immutable timestamp
  • Verifiable PDF certificate
  • Bulk certification API

  from €790 + VAT

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• 06Security · Static analysis · Fuzzing

  Smart contract audits

  Line-by-line manual review combined with static analysis, fuzzing and invariant testing. We catch reentrancy, access control flaws, oracle manipulation and logic bugs before attackers do.

  • Severity-ranked report
  • Proof of concept for each issue
  • Fix review included
  • Audit badge

  from €1,200 + VAT

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• 07React · wagmi · Wallet Adapter

  dApps & Web3 frontends

  Fast, secure interfaces wired to your contracts: MetaMask, WalletConnect or Phantom connection, network switching, message signing and transactions with flawless UX.

  • Multi-wallet & multichain
  • Sign-In with Ethereum (SIWE)
  • Custom responsive design
  • Real-time event indexing

  from €1,900 + VAT

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• 08Rewards · Locks · Schedules

  Staking & vesting

  Staking pools with configurable APY, time locks and vesting schedules with cliff and linear release for team, investors and community.

  • Fixed or dynamic rewards
  • Cliff + linear release
  • Emergency withdrawal
  • User dashboard included

  from €1,100 + VAT

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• 09Governor · Timelock · Snapshot

  DAOs & on-chain governance

  Autonomous organizations with on-chain voting, delegation, quorum, timelock and a multisig treasury. Transparent decisions that execute themselves.

  • OpenZeppelin Governor
  • Safe multisig treasury
  • Off-chain Snapshot voting
  • Timelocked execution

  from €1,400 + VAT

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• 10Trading · Auctions · Royalties

  NFT marketplaces

  Your own NFT marketplace: listings, offers, English and Dutch auctions, crypto payments, automatic creator royalties and platform fees.

  • Gasless signed orders
  • Auctions and offers
  • Royalties and fees
  • Admin dashboard

  from €3,500 + VAT

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• 11LayerZero · CCIP · Wormhole

  Bridges & multichain deployment

  Take your tokens and NFTs to several chains at once. We integrate cross-chain messaging and deploy at identical addresses on every network for a unified experience.

  • Omnichain tokens (OFT)
  • Deterministic addresses (CREATE2)
  • Per-network rate limits
  • Message monitoring

  from €2,500 + VAT

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• 12Real estate · Art · Invoices

  Real-world asset (RWA) tokenization

  Turn physical assets into compliant fractional tokens: KYC allowlists, transfer restrictions and automatic income distribution to holders.

  • Permissioned tokens (ERC-3643)
  • Automatic dividend payouts
  • Ownership registry
  • KYC/AML integration

  from €3,900 + VAT

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• 13Strategy · Modeling · Whitepaper

  Consulting & tokenomics

  We design your token economy: supply, allocation, emissions, incentives and market simulations, plus help with your whitepaper and technical architecture.

  • Supply & emission model
  • Scenario simulations
  • Whitepaper review
  • Technical roadmap

  from €450 + VAT

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Indicative prices excluding VAT. The final quote depends on scope, network and timeline.