“One of the pioneering firms in web3 solutions, digital assets and tokenization, recognized for its innovation and solid reputation across Spain and Latin America.”
Jorge CorredorLawyer, Rincón Cuéllar & Asociados
We are your blockchain development company in Luxembourg
We build blockchain products for companies in Luxembourg with our in-house team, designing each project around MiCA, the CSSF and the Luxembourg law that allows distributed ledgers to be used to issue and transfer securities.
Tell us about your project
Blockchain development in Luxembourg, from idea to production
We turn your use case into a product you can launch, operate and extend. One team designs the architecture, writes the contracts and integrates them with your systems.
Tell us what you want to buildThe Luxembourg framework, from the architecture
We separate the provider's permission from what the issuance requires. If the token is a security, the law allows the issuance account and transfers to be kept on a distributed ledger, and a control agent reconciles what was issued with what is recorded.
Smart contracts ready for review
We build your business logic with tests and peer review, and prepare every contract, documented, for an external audit and a staged deployment before it reaches production.
In English, with meetings in your working day
You work in English, or in Spanish if your team prefers, directly with the people who design and write the code. Meetings fit into your working day, and the detail is followed through shared documentation and a stable technical channel.
A foundation that keeps evolving
We document the code and plan deployments and monitoring, so your team can maintain the product and add features on a foundation it understands.
Services
Blockchain development services in Luxembourg
We cover the full Web3 product lifecycle: idea, MVP, mainnet deployment, audits and maintenance.
Connect your operations
Represent assets and rights
Use cases
Blockchain use cases in Luxembourg
Cases that build on what Luxembourg already does with funds, public debt and air cargo, from the first control agent to Treasury certificates issued on blockchain.
Tokenized funds
The Blockchain IV law creates the control agent; in July 2025 the first CSSF licence was announced, for Investre, which issues and manages native tokenized funds.
Blockchain for Banking & Finance
Digital Treasury certificates
In June 2025 the State Treasury issued €50 million in six-month digital treasury certificates on a blockchain platform based in Luxembourg.
Blockchain for Banking & Finance
Pharmaceutical air cargo
Luxembourg Airport, home base of Cargolux, is certified for good distribution practice (GDP) for pharmaceuticals; the record keeps each shipment's temperature and chain of custody.
Blockchain for Pharma
Green bonds on LGX
Since 2016, the Luxembourg Stock Exchange has displayed green bonds aligned with a recognised standard on its LGX platform; the record links each issue to its impact reports.
Blockchain for Energy & Sustainability
Technologies we build blockchain with in Luxembourg
Our stack covers every layer of your product: smart contracts, blockchain networks and integration with your systems. It is what we use to build, test and deploy software tailored to your business.
- Solidity
The smart contract language for verifiable rules on EVM networks.
- Rust
Performance and memory safety for contracts, nodes and Web3 tooling.
- Ethereum
EVM contracts, tokens and final settlement on an open Proof of Stake network.
- Hardhat
An environment to compile, test and deploy contracts on EVM networks from Node.
- Foundry
Solidity tests, invariant fuzzing and command-line tooling for EVM networks.
- Chainlink
Oracles for external data, randomness and cross-chain messaging for contracts.
- Polygon
Polygon PoS: EVM contracts secured by its own validators, with low fees.
- Solana
Programs, accounts and parallel execution on a high-throughput layer 1.
- OpenZeppelin
Audited Solidity contracts for tokens, access control and upgradeable systems.
European Union: MiCA / CSSF
Blockchain regulatory framework in Luxembourg
In Luxembourg, MiCA applies directly and the law of 6 February 2025 designates the CSSF as the competent authority; the transitional regime for former VASP providers ended on 1 July 2026. For securities, the reforms known as Blockchain I to IV allow distributed ledgers to be used for the issuance account and for circulation, and create the control agent, reserved for eligible financial institutions. CASP authorisation does not by itself allow ART or EMT issuance.
See blockchain regulation in LuxembourgLuxembourg framework
Milestones enabling blockchain in Luxembourg
The dates on which Luxembourg opened its securities laws to distributed ledgers and set how a crypto-asset provider is authorised today. Each milestone links to its source.
See the regulation guide for LuxembourgRecognition of transfers through distributed ledgers
The law of 1 March amends the securities circulation framework. Article 18a permits accounts and transfers through secure electronic mechanisms, subject to its conditions.
CSSF · Securities circulation lawElectronic recording of the issuance account
The amendment to the dematerialised securities law permits secure electronic mechanisms, including distributed ledgers, for the issuance account.
CSSF · Legal text and scope of reformIntroduction of the control agent
The amendment introduces record-keeping, tracking and reconciliation duties, with organisational requirements and prior CSSF notification.
CSSF · Legal text and scope of reformDesignation of the national MiCA authority
The law designates the CSSF as competent authority and is published on 10 February 2025. MiCA was already directly applicable under its EU timetable.
CSSF · Official communicationEnd of the VASP transitional period
The CSSF confirms the end of the transitional regime and recalls the need to verify entitlements in its registers and ESMA’s.
CSSF · Official communication
Reviews in Luxembourg
What do our clients think of Metlabs?
“We structured the tokenization of real estate projects with them, and I value the team's ability to understand our corporate needs and genuinely solve them.”
Joan MejíaManager, GLOBYNE
“They advised us on the feasibility of tokenizing real estate assets in Uruguay with direct, cordial treatment. A professional team, responsive and always available.”
Álvaro Silva SantamaríaCEO, Sp Inmuebles
“Great professionals at structuring tokenized projects, with technical command and attention to detail that inspire full confidence at every stage of the work.”
Francisco BetancourtVerified Google review
“As a blockchain lawyer, I value their experience and professionalism in consulting and executing tokenization projects. Technology partners you can fully trust.”
Vanessa RivasBlockchain lawyer, El Salvador
“Great professionals, very attentive to their clients and always mindful of every detail. Working with their team has been a genuine pleasure from start to finish.”
CriptorentVerified Google review
“A very professional yet approachable company that empathizes with your doubts and needs. Highly recommended for entrepreneurs with a tokenization project.”
Javier EspasaTokenization entrepreneur
“Exceptional in every sense. From legal support I value their rigor and transparency: working with Metlabs means professionalism, innovation and security.”
Pedro A. Agúndez MéndezGoogle Local Guide
“Excellent service across blockchain development, asset tokenization and consulting. A very professional team that I recommend wholeheartedly, without reservation.”
José Luis DíazVerified Google review
“I have worked with them on several projects and they are very professional. A guarantee that everything turns out perfectly. Without a doubt, 100% recommended.”
Ignacio Fernández JiménezVerified Google review
“One of the pioneering firms in web3 solutions, digital assets and tokenization, recognized for its innovation and solid reputation across Spain and Latin America.”
Jorge CorredorLawyer, Rincón Cuéllar & Asociados
“Great professionals at structuring tokenized projects, with technical command and attention to detail that inspire full confidence at every stage of the work.”
Francisco BetancourtVerified Google review
“A very professional yet approachable company that empathizes with your doubts and needs. Highly recommended for entrepreneurs with a tokenization project.”
Javier EspasaTokenization entrepreneur
“I have worked with them on several projects and they are very professional. A guarantee that everything turns out perfectly. Without a doubt, 100% recommended.”
Ignacio Fernández JiménezVerified Google review
“We structured the tokenization of real estate projects with them, and I value the team's ability to understand our corporate needs and genuinely solve them.”
Joan MejíaManager, GLOBYNE
“As a blockchain lawyer, I value their experience and professionalism in consulting and executing tokenization projects. Technology partners you can fully trust.”
Vanessa RivasBlockchain lawyer, El Salvador
“Exceptional in every sense. From legal support I value their rigor and transparency: working with Metlabs means professionalism, innovation and security.”
Pedro A. Agúndez MéndezGoogle Local Guide
“They advised us on the feasibility of tokenizing real estate assets in Uruguay with direct, cordial treatment. A professional team, responsive and always available.”
Álvaro Silva SantamaríaCEO, Sp Inmuebles
“Great professionals, very attentive to their clients and always mindful of every detail. Working with their team has been a genuine pleasure from start to finish.”
CriptorentVerified Google review
“Excellent service across blockchain development, asset tokenization and consulting. A very professional team that I recommend wholeheartedly, without reservation.”
José Luis DíazVerified Google review
Security
Security in blockchain development in Luxembourg
Every delivery goes through the same checklist before it reaches mainnet. What changes between projects is the depth of each control, because an MVP does not carry the same risk as a contract that holds third-party funds.
Before mainnet
- Roles and permissions defined for every critical function
- Unit and invariant tests, and fuzzing on the logic that moves value
- Static analysis and peer review of every change
- Multisig and timelock on administration when the risk justifies it
- Custody and rotation of the deployment keys agreed
- External audit when the value at risk requires it
We work with leading audit firms
FAQ
Frequently asked questions about blockchain development in Luxembourg
What we are asked before a project starts.
Talk to our teamWhich regulations apply to a blockchain project in Luxembourg?
MiCA governs crypto-asset issuance and services, with the CSSF as the competent authority: providing services requires CASP authorisation or, for certain financial entities, the Article 60 notification, and ART or EMT issuance has its own procedure. If the token is a security, securities rules apply along with the laws on circulation and dematerialised securities, including the control agent where the issuance uses one. AML obligations also apply. We analyse the fit of your case before writing any code.
Do you work with both startups and established companies?
Yes. We support startups from MVP validation to a product they can show in a funding round, and established companies on tokenization, traceability and digital identity projects with strict compliance requirements. In every case, smart contracts go through tests and review before they reach mainnet.
How do you work with Luxembourg companies?
In English or Spanish, in direct contact with the people who design and build the product. Meetings are set during your working hours and decisions are put in writing; shared documentation and a stable technical channel keep the work moving.
How long does blockchain development take?
The timeline depends on product complexity, integrations and the level of review required. Before development we define the scope, dependencies and deliverables of each phase, so you can decide what reaches production first and what waits for a second iteration. That way an MVP is never mistaken for a complete architecture.
Which blockchain network is right for my project?
We do not choose the network by trend. For EVM projects we assess Ethereum, Polygon, Arbitrum or Base on finality, costs, tooling, interoperability, custody and compliance, and we consider non-EVM networks when they fit better. The recommendation covers contracts, indexing, wallets and operations, and comes from the product requirements and who will use it.
Let's build the rails for your project in Luxembourg
Tell us about your case and we'll propose architecture, timeline and budget within a week.
Where we work in Luxembourg
We work remotely with teams throughout the country, and on site where the project calls for it.
Territorial coverage
- Capellen
- Clervaux
- Diekirch
- Echternach
- Esch-sur-Alzette
- Grevenmacher
- Luxembourg
- Mersch
- Redange
- Remich
- Vianden
- Wiltz
Blog
Articles on securities tokenization and regulation
Real Asset Tokenization: How RWA Tokenization Works
How to structure an RWA project: holder rights, issuance, recordkeeping, payments and recovery. What blockchain adds and what depends on the legal arrangement.
MiFID II and tokenization: classification, services and limits
MiFID II and tokens: financial instrument classification, investment services and the distinction from MiCA before designing an issuance.
OpenZeppelin and ERC-3643: how a security token is built
What OpenZeppelin libraries and ERC-3643 controls provide, and what a securities issuance also requires: rights, permissions, operations and review.
Where we are
Blockchain development in Luxembourg and worldwide
Metlabs Offices
Av. García Sabell, 1, Edificio Proa 15009 A Coruña, Spain
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