Audited · On-chain · Multichain
Production-grade Web3 development where security is the first line of code. Try it yourself: every service on this site has an interactive demo.
// catalog
Tap, configure and break every demo, and see what you get before you pay. Demos are local simulations: no wallet is connected and no real money moves.
ERC-721 · ERC-1155 · Metaplex
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.
ERC-20 · SPL · Token-2022
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.
Solidity · Rust · Anchor
Bespoke, trustless business logic: escrows, conditional payments, subscriptions, verifiable lotteries, reward systems and whatever you can imagine, with tests and documentation.
Airdrops · Multisender · Payroll
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.
Notarization · Proof of existence
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.
Security · Static analysis · Fuzzing
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.
React · wagmi · Wallet Adapter
Fast, secure interfaces wired to your contracts: MetaMask, WalletConnect or Phantom connection, network switching, message signing and transactions with flawless UX.
Simulation: your real wallet is not used.
Welcome to BlockDevShop. Sign to log in.
Rewards · Locks · Schedules
Staking pools with configurable APY, time locks and vesting schedules with cliff and linear release for team, investors and community.
Governor · Timelock · Snapshot
Autonomous organizations with on-chain voting, delegation, quorum, timelock and a multisig treasury. Transparent decisions that execute themselves.
Trading · Auctions · Royalties
Your own NFT marketplace: listings, offers, English and Dutch auctions, crypto payments, automatic creator royalties and platform fees.
LayerZero · CCIP · Wormhole
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.
Real estate · Art · Invoices
Turn physical assets into compliant fractional tokens: KYC allowlists, transfer restrictions and automatic income distribution to holders.
Strategy · Modeling · Whitepaper
We design your token economy: supply, allocation, emissions, incentives and market simulations, plus help with your whitepaper and technical architecture.
// infrastructure
We pick the chain for your use case: maximum security, minimum fees or extreme speed.
The most secure, decentralized network. Ideal for high-value assets.
Cent-level fees and massive adoption. Perfect for NFTs and gaming.
Leading optimistic rollup: Ethereum security with minimal gas.
OP Stack Superchain: scalable, cheap and EVM-equivalent.
Sub-second finality and custom subnets.
Thousands of transactions per second with near-zero fees.
// methodology
We analyze your idea, the optimal chain and the risks. Fixed quote within 24-48 h.
Technical spec, flow diagrams and threat model before a single line of code.
Clean code on audited standards, with unit tests, fuzzing and invariants.
Static analysis, manual review and testnet deployment for you to try.
Explorer-verified deployment, ownership handover and full documentation.
Monitoring, upgrades and technical assistance after launch.
// free utility
Encrypt any message with your own key. Anyone who copies the ciphertext cannot read it without the password. Everything runs in your browser: nothing is sent or stored.
⚠ If you lose the password, nobody can recover the message, not even us.
// the developer
BlockDevShop is run by a full-stack blockchain developer specialized in Solidity, Rust and smart contract security. You can review the public code on GitHub.
// faq
It depends on complexity. A standard token starts at €490 and a custom contract at €1,500. You get a fixed, no-obligation quote within 24-48 hours.
Ethereum, Polygon, Arbitrum, Optimism, Avalanche (EVM) and Solana. We recommend the best fit based on cost, security and audience.
We batch hundreds of transfers into a single transaction with optimized contracts, or use Merkle-tree airdrops where each user claims their share. Savings can exceed 50%, and on L2 networks each transfer costs cents.
We compute your document’s cryptographic fingerprint (hash) and record it in a block. That proves, without revealing the content, that the file existed at that date and has not been modified.
Every contract goes through an internal audit with static analysis, fuzzing and manual review. For high-volume projects we also offer full audits with a public report.
Yes. It uses AES-256-GCM with a key derived from your password via PBKDF2 (600,000 iterations) plus a random salt and IV. It runs entirely in your browser, so we never see your texts or passwords.
Yes. When we finish we transfer on-chain ownership to you, along with the full source code and documentation.
// let’s talk
Tell us about your project. We reply within 24 hours.