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Metlabs - Blockchain Development Company
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We are your blockchain development company in Puerto Rico

We build blockchain products for companies in Puerto Rico with our in-house team, separating from the design stage the local OCIF licence, the federal obligations and the Act 60 incentives, which authorise nothing on their own.

Tell us about your project
Blockchain development in Puerto Rico: dotted globe with the country marked by its flag

Blockchain development in Puerto Rico, from idea to production

We turn your use case into a product ready to launch, operate and grow. The same team designs the architecture, writes the contracts and integrates them with your systems.

Tell us what you want to build

  1. Local and federal rules, from the architecture

    Before choosing a network we pin down the function the product performs: transmitting client funds falls under Act 136-2010 and FinCEN's perimeter; custody for international clients, under Act 273-2012; a token with investment rights, under securities rules.

  2. Smart contracts ready for audit

    We code your business logic with tests and peer review. The code is ready for an external audit and a progressive deployment before it runs in production.

  3. In Spanish or English, on your time

    You work in Spanish or in English, whichever your team prefers, with the people who design and write the code. Meetings go in your business hours, and between them the work continues in shared documentation and a stable technical channel.

  4. A foundation that can keep evolving

    We document the code and plan deployments and monitoring. Your team receives a technical foundation for maintaining the product and adding features.

Services

Blockchain development services in Puerto Rico

We cover the full Web3 product lifecycle, from idea and MVP to mainnet, audits and maintenance.

Use cases

Blockchain use cases in Puerto Rico

From the index every notary files each month to the certificate that accounts for one renewable megawatt-hour, Puerto Rico already keeps records that an on-chain layer can reflect without replacing them.

  • Two people seen from behind holding sealed envelopes beside an open safe in a San Juan office, custody for international clients with blockchain in Puerto Rico

    Custody for international clients

    An international financial entity under Act 273-2012 may hold digital assets in custody with a special permit, without serving domestic persons or operating an exchange.

    Blockchain for Banking & Finance
  • Bound volumes of notarial protocols on the shelf of an Old San Juan notary's office, verifiable notarial index with blockchain in Puerto Rico

    Verifiable notarial index

    Every notary files a monthly index of their deeds with the Office of Notarial Inspection; an on-chain fingerprint timestamps each index without exposing the protocol, which is secret.

    Blockchain for Legaltech & Compliance
  • Rows of solar panels on a dry hillside in southern Puerto Rico with the Caribbean Sea behind, renewable energy certificates with blockchain in Puerto Rico

    Renewable energy certificates

    Each REC under Act 82-2010 equals one renewable megawatt-hour generated in Puerto Rico, and retail energy suppliers use it as evidence before the Energy Bureau.

    Blockchain for Energy & Sustainability
  • Oak barrels stacked in a rum ageing warehouse in Puerto Rico with light coming through the windows, rum ageing with blockchain in Puerto Rico

    Rum ageing

    The Internal Revenue Code requires twelve months of ageing for rum identified as “Ron de Puerto Rico”; every barrel recorded with its filling date and its batch.

    Blockchain for Agribusiness

Technologies we build blockchain with in Puerto Rico

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.

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North facade of the Capitol of Puerto Rico in San Juan
North facade of the Capitol of Puerto Rico in San Juan
Puerto Rico: OCIF · FinCEN

Blockchain regulatory framework in Puerto Rico

Puerto Rico combines the federal rules of the United States with local licences. OCIF applies Act 136-2010 to covered convertible virtual currency businesses and, under Act 273-2012, may grant international financial entities a special permit for digital asset custody, although they may not operate an exchange. FinCEN, the SEC and the CFTC step in depending on the activity. The Act 60 tax incentives do not replace any of those authorisations.

See blockchain regulation in Puerto Rico
Reviews in Puerto Rico

What do our clients think of Metlabs?

“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 Corredor
Jorge CorredorLawyer, Rincón Cuéllar & Asociados

“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 Santamaría
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 Rivas
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 Espasa
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 Méndez
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 Jiménez
Ignacio Fernández JiménezVerified Google review
Google Reviews
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Security

Security in blockchain development in Puerto Rico

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

  • CertiK - Audit firm logo
  • Hacken - Audit firm logo
  • OpenZeppelin - Audit firm logo
  • Trail of Bits - Audit firm logo
FAQ

Frequently asked questions about blockchain development in Puerto Rico

What we are asked before a project starts.

Talk to our team

  1. Which regulations apply to a blockchain project in Puerto Rico?

    It depends on the function. Anyone receiving payment orders from clients to transfer them needs the OCIF licence under Act 136-2010 before operating, and may have to register as an MSB with FinCEN; federal registration does not replace the local licence. A token representing debt, equity or an investment contract is assessed under the Uniform Securities Act and federal rules, within whatever AML framework applies. An Act 60 decree authorises none of that. We analyse the fit of your case before writing any code.

  2. Do you work with both startups and established companies?

    Yes. We support startups from MVP validation to their first 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.

  3. How do you work with Puerto Rican companies?

    In Spanish or in English and in direct contact with the people who design and build the product. Meetings are concentrated in your business hours, and the rest of the work moves forward through shared documentation, written decisions and a stable technical channel.

  4. How long does blockchain development take?

    It depends on product complexity, the number of integrations and the level of review required. Before development we agree scope, dependencies and phase deliverables. That lets you decide what reaches production first and what waits for a second iteration, without treating an MVP as if it were the complete architecture.

  5. Which blockchain network is right for my project?

    The one that fits the product requirements, not the one in fashion. For EVM projects we compare 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, with the product's users in mind.

Let's build the rails for your project in Puerto Rico

Tell us about your case and we'll propose architecture, timeline and budget within a week.

Talk to our blockchain team

Where we work in Puerto Rico

We work remotely with teams throughout the country, and on site where the project calls for it.

Territorial coverage

  • Adjuntas
  • Aguada
  • Aguadilla
  • Aguas Buenas
  • Aibonito
  • Añasco
  • Arecibo
  • Arroyo
  • Barceloneta
  • Barranquitas
  • Bayamón
  • Cabo Rojo
  • Caguas
  • Camuy
  • Canóvanas
  • Carolina
  • Cataño
  • Cayey
  • Ceiba
  • Ciales
  • Cidra
  • Coamo
  • Comerío
  • Corozal
  • Culebra
  • Dorado
  • Fajardo
  • Florida
  • Guánica
  • Guayama
  • Guayanilla
  • Guaynabo
  • Gurabo
  • Hatillo
  • Hormigueros
  • Humacao
  • Isabela
  • Jayuya
  • Juana Díaz
  • Juncos
  • Lajas
  • Lares
  • Las Marías
  • Las Piedras
  • Loíza
  • Luquillo
  • Manatí
  • Maricao
  • Maunabo
  • Mayagüez
  • Moca
  • Morovis
  • Naguabo
  • Naranjito
  • Orocovis
  • Patillas
  • Peñuelas
  • Ponce
  • Quebradillas
  • Rincón
  • Río Grande
  • Sabana Grande
  • Salinas
  • San Germán
  • San Juan
  • San Lorenzo
  • San Sebastián
  • Santa Isabel
  • Toa Alta
  • Toa Baja
  • Trujillo Alto
  • Utuado
  • Vega Alta
  • Vega Baja
  • Vieques
  • Villalba
  • Yabucoa
  • Yauco
Where we are

Blockchain development in Puerto Rico and worldwide

Dotted globe showing the Metlabs headquarters in A Coruña and its presence in Andorra
Proa building in A Coruña, headquarters of Metlabs, a blockchain development and tokenization company

Metlabs Offices

Av. García Sabell, 1, Edificio Proa 15009 A Coruña, Spain

We are also your blockchain development company in

SpainUnited StatesUAEUnited KingdomMexicoSingaporeAustraliaSwitzerlandColombiaArgentinaChilePeruPortugalGermanyHong KongBrazilEcuadorFranceIndiaPanamaAndorraAustriaBahrainBelgiumBoliviaCanadaCosta RicaCubaCyprusCzechiaDenmarkDominican RepublicEl SalvadorEstoniaFinlandGreeceGuatemalaHondurasHungaryIrelandIsraelItalyJapanKuwaitLiechtensteinLithuaniaLuxembourgMaltaMonacoMoroccoNetherlandsNew ZealandNicaraguaNigeriaNorwayOmanParaguayPolandQatarRomaniaSan MarinoSaudi ArabiaSeychellesSouth AfricaSouth KoreaSwedenTurkeyUruguayVenezuela

As featured in

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