“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
Blockchain development company in Spain
We build blockchain products for companies in Spain with our in-house team in A Coruña, and we work out how MiCA and Law 6/2023 apply from the architecture stage.
Tell us about your project
Blockchain development in Spain, from idea to production
We turn your use case into a product you can launch, operate and grow. From A Coruña, the same team designs the architecture, writes the contracts and integrates them with your systems.
Tell us what you want to buildThe Spanish framework, from the architecture
Before choosing a network we decide whether the token is a MiCA crypto-asset or a security represented on DLT. That distinction changes the register, the permissions and who supervises the product.
Smart contracts ready for review
We build your business logic with tests and peer review. The code is prepared for an independent audit and a progressive deployment before going into production.
In your language and time zone
You work in Spanish and in your time zone with the people who design and write the code, with no sales layer in between and no part of the build subcontracted.
A foundation you can keep building on
We document the code and plan deployments and monitoring. Your team gets a technical foundation for maintaining the product and adding new capabilities.
Services
Blockchain development services in Spain
We cover the full Web3 product lifecycle, from idea and MVP through to mainnet, audits and maintenance.
Connect your operations
Represent assets and rights
Use cases
Blockchain use cases in Spain
Projects that fit the Spanish economy and its regulatory framework, from Law 6/2023 to MiCA.
Real estate shares
Shares in the vehicle that owns a property, represented as DLT securities with their ERIR, as Law 6/2023 allows.
Blockchain for Real Estate
Renewable guarantees of origin
Each plant's output, traceable and reconciled with the guarantees of origin issued by the CNMC.
Blockchain for Energy & Sustainability
Olive oil origin
From the grove to the mill and the bottle, with the plot and every batch linked to the product code.
Blockchain for Agribusiness
SME debt on DLT
Bonds and notes represented on DLT, like the Dianelum bonds, whose ERIR the CNMV registered in February 2025.
Blockchain for Banking & Finance
Technologies we build blockchain with in Spain
Our stack covers every layer of your product: smart contracts, blockchain networks and integration with your systems. We use it 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 / MiFID
Blockchain regulatory framework in Spain
Technical design starts with the type of asset: MiCA for crypto-assets within its scope and MiFID II for tokenized financial instruments. In Spain, the CNMV and the Bank of Spain have different responsibilities depending on the activity and token. Securities represented on DLT also require consideration of the ERIR, the entity responsible for registration and record-keeping.
See blockchain regulation in SpainSpanish framework
Milestones enabling blockchain in Spain
The dates that turned tokenization into something a Spanish company can take to production. Each milestone links to its source.
See the regulation guide for SpainDLT securities and the ERIR role in Spanish law
Law 6/2023 generally takes effect. Articles 6 and 8 address transferable securities represented using DLT and the entity responsible for administering their registration and record-keeping, known as an ERIR.
BOE · Law 6/2023Ursus-3: first entity enabled to act as an ERIR
Ursus-3 Capital dates its authorisation to provide custody and administration of DLT securities, enabling it to act as Spain’s first ERIR, to this day. The entity’s eligibility precedes its registration as ERIR for a particular issuance.
Ursus-3 · Authorisation date and scopeCNMV announces the first DLT trading and settlement system
The CNMV announces Securitize’s authorisation as the first DLT trading and settlement system authorised by the Spanish supervisor. It combines trading and settlement of financial instruments under the EU pilot regime; this is not a CASP licence.
CNMV · Securitize authorisation announcementEnd of operations under the transitional regime
The former Bank of Spain registration ceases to provide a sufficient basis for continuing services subject to MiCA.
CNMV · MiCA
Reviews in Spain
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
Team
In-house blockchain development team
Metlabs is a blockchain development company based in A Coruña, Spain. An in-house team covers every part of the project, from product and engineering to infrastructure and legal fit. The people who design your architecture write, test and deploy the code.
Meet the team- Projects in production
- +30
- In tokenized assets
- +$40M
- In‑house development
- 100%
Isaac González
Head of Innovation
Carlos Peña
Full Stack Engineer
Pablo Castro
DevOps Engineer
Helena Ramos
Product Designer
Javier Yáñez
Legal
Security
Security in blockchain development in Spain
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 Spain
What we are asked before a project starts.
Talk to our teamWhich regulations apply to a blockchain project in Spain?
MiCA governs crypto-asset issuance and services, supervised by the CNMV and the Bank of Spain; providing services on them requires CASP authorisation. Depending on the case, AML obligations also apply and, if the token qualifies as a financial instrument, MiFID II. We analyse the fit of your case before writing a single line of code.
Do you work with both startups and established companies?
Yes. We support startups from MVP validation to fundraising, and established companies (banking, insurance, energy, real estate) on tokenization, traceability and digital identity projects with strict compliance requirements. Smart contracts go through tests and review before mainnet in every case.
Do you work with companies in any Spanish province?
Yes. From our headquarters in A Coruña, we develop projects for companies across Spain. We work remotely, with direct communication with the people who design and build the product. Shared documentation, decision meetings and a stable technical channel keep the work aligned from discovery through production.
How long does blockchain development take?
Timing depends on product complexity, integrations and the level of review required. Before development, we define scope, dependencies and phase deliverables. That lets you decide what reaches production first and what belongs in a second iteration, without treating an MVP as if it were a complete production architecture.
Which blockchain network is right for my project?
We do not choose a network because it is trending. For EVM projects, we assess Ethereum, Polygon, Arbitrum or Base against finality, costs, tooling, interoperability, custody and compliance needs. We also consider non-EVM networks when they fit better. The recommendation covers contracts, indexing, wallets and operations and follows the product requirements and its users.
Let's build the rails for your project in Spain
Tell us about your case and we'll propose architecture, timeline and budget within a week.
Blockchain development across Spain
From our headquarters in A Coruña we build blockchain for companies across Spain.
Offices
- A CoruñaAvda. García Sabell 1, Planta 12, Edificio Proa15009 A CoruñaDirections
Territorial coverage
- A Coruña
- Álava
- Albacete
- Alicante
- Almería
- Asturias
- Ávila
- Badajoz
- Barcelona
- Burgos
- Cáceres
- Cádiz
- Cantabria
- Castellón
- Ceuta
- Ciudad Real
- Córdoba
- Cuenca
- Girona
- Granada
- Guadalajara
- Gipuzkoa
- Huelva
- Huesca
- Balearic Islands
- Jaén
- La Rioja
- Las Palmas
- León
- Lleida
- Lugo
- Madrid
- Málaga
- Melilla
- Murcia
- Navarre
- Ourense
- Palencia
- Pontevedra
- Salamanca
- Santa Cruz de Tenerife
- Segovia
- Seville
- Soria
- Tarragona
- Teruel
- Toledo
- Valencia
- Valladolid
- Biscay
- Zamora
- Zaragoza
- Galicia
- Castile and León
- Basque Country
Blog
Articles on blockchain in Spain
ERIR in Spain: roles and requirements for tokenized securities
ERIR functions, authorization, and responsibilities in Spain, with practical criteria for DLT registration, incident management, and issuance planning.
Security tokens in Spain: regulation and issuance steps
Security tokens in Spain: rights, documentation, DLT representation and responsible register operators before issuing securities.
Real estate tokenization in Spain: legal structure and practical 2026 guide
How to structure real estate tokenization in Spain: legal vehicle, token rights, MiFID II, liquidity, costs and risks to validate before issuance.
Where we are
Blockchain development in Spain and worldwide
Metlabs Offices
Av. García Sabell, 1, Edificio Proa 15009 A Coruña, Spain
We are also your blockchain development company in
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