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Smart Contracts

What is a Smart Contract? How do they work? What benefits do they offer?

What is a Smart Contract?

A smart contract is a set of programmed instructions that automatically executes when certain conditions are met. It is stored on a blockchain, ensuring immutability, security, and traceability. In other words, it is an agreement that requires no witnesses, intermediaries, or interpretation, as it runs autonomously according to pre-defined rules.

At Itrion, we don’t just code these contracts—we design them to fulfil real legal, tax, and operational functions within the applicable regulatory framework.

How do they work?

Imagine an agreement that doesn’t require lawyers to be executed. A smart contract works just like that: if certain conditions are met (for example, receipt of payment, delivery of an asset, or reaching a specific date), the contract is triggered automatically.

This makes it possible to replace bureaucratic processes, digitally sign agreements between parties without prior trust, and reduce costs, delays, and errors in critical operations.

 

What benefits do they offer?

Smart contracts offer significant advantages for businesses, institutions, and individual users. By eliminating the need for intermediaries, they reduce operational costs and accelerate complex processes.

Thanks to their automatic execution and the traceability provided by blockchain technology, they lower the risk of errors, fraud, or breaches.

In addition, their programmability allows for tailored rules for each use case — from income distribution and access control to identity verification and collateral management.

All of this with greater legal certainty, operational efficiency, and trust for all parties involved.

 

Smart solutions tailored 
to every need​

 Automation, security, and compliance from design to implementation.

At Itrion, we understand that every project is unique, and that smart contracts must be tailored not only to the operations they automate, but also to the legal, fiscal, and technical environment in which they are deployed. That’s why we offer a comprehensive approach to smart contract development, combining blockchain engineering with a thorough analysis of each client’s regulatory and operational requirements.

From the functional definition of the contract to its deployment on the appropriate network, we ensure secure, scalable solutions that align with your business objectives. Our commitment is to turn automation into a strategic advantage for your organisation.

 

Before initiating development, we conduct a thorough functional analysis to identify all relevant actors, conditions, rules, and events to be incorporated into the smart contract. This logical modelling process ensures that the contract faithfully mirrors real-world business processes, eliminating ambiguities, contradictions, or loopholes that could affect its execution or legal enforceability.

We develop fully customised smart contracts, built from the ground up based on the client’s objectives, the type of asset involved, and the applicable regulatory environment. We carefully select the most suitable blockchain network (Ethereum, Polygon, BNB Chain, etc.) to optimise performance, scalability, gas costs, and operational compatibility. Each contract is efficient, secure, and designed to stand the test of time. 

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We develop comprehensive test scenarios, including automated validations and simulations that replicate the contract’s behaviour under both real-world and extreme conditions. Before final deployment, each contract undergoes technical reviews and testing on a testnet. The publication process includes version control, the use of proxy contracts (where applicable), and clear technical documentation. 

Once developed, the contract is internally audited by our security specialists. For critical projects, we coordinate external audits with independent firms to verify code robustness, resistance to attacks, and compliance with functional specifications. Every contract audited by Itrion includes traceability, test results, and verifiable assurances.

We integrate smart contracts with external platforms, ERPs, payment systems, CRMs, or real-world data sources through secure APIs and oracles. This enables the automation of complex operations, the conditioning of payments or rights to verifiable events, and the synchronisation of blockchain logic with your company’s operational environment.

Each contract is developed with the legal and tax requirements of the project in mind. We work closely with legal advisors to ensure that the effects of the contract — whether related to assets, payments, ownership, or rights — are valid, enforceable, and compliant with the regulations in force in each jurisdiction. Our expertise spans both European legislation and international legal frameworks. 

We support our clients in defining their automation strategy: which processes should be digitised, what benefits a smart contract can deliver, and how to integrate it into their organisational structure. In addition, we offer tailored training for technical, legal, and management teams, ensuring strong adoption and efficient use of the implemented solution.

Some of the Blockchains We Work With

Ethereum

The pioneering smart contract network, Ethereum remains the reference standard in the blockchain ecosystem. With a strong community, mature tools, and compatibility with major standards (ERC-20, ERC-721, etc.), it is ideal for projects that prioritise security, interoperability, and a well-established user base.

Polygon  

A scaling solution for Ethereum that allows smart contracts to run with significantly lower costs and high speed. Especially useful for platforms with high transaction volumes, such as marketplaces, blockchain games, or token-based loyalty programmes.

Binance Smart Chain (BSC)   

BSC offers speed, low transaction fees, and compatibility with the EVM, allowing Ethereum-based smart contracts to be ported with minimal changes. It’s a very popular network among startups and projects aiming for rapid market entry without sacrificing functionality.

Polkadot / Kusama

Polkadot and its experimental network Kusama are designed to build secure and interoperable blockchains. Ideal for projects looking to launch their own network or connect multiple smart contracts across chains. Kusama enables real-world testing of ideas before scaling on Polkadot.

Solana 

Solana stands out for its extremely high throughput and very low fees. Although its development environment is more technical (non-EVM), it’s a solid choice for projects requiring massive scalability, such as decentralised exchanges, DeFi platforms, or high-frequency systems.

Neo

Known as the “Chinese Ethereum”, NEO focuses on developing smart contracts in languages such as C# and Python. Its standards (NEP-5, NEP-11, NEP-17) and support for digital identity make it an attractive option for institutional or regulatory-focused projects in Asia and emerging markets.​

Tezos 

Tezos allows protocol upgrades without hard forks, offering long-term stability. Its focus on on-chain governance and support for smart contracts written in Michelson (a verifiable functional language) makes it a robust choice for institutional, cultural, or heritage-based projects.

Moonriver  

A network compatible with the EVM, deployed on Kusama and designed to test solutions before deploying them to Moonbeam (its Polkadot-based sibling). Ideal for projects wanting to combine Ethereum compatibility with the scalability and innovation of the Polkadot ecosystem. 

Criteria We Consider

Choosing the right blockchain network depends on the type of project, its technical complexity, the regulatory environment, and the available resources. At Itrion, we analyse all these factors and recommend the most suitable network for each case.

 

Scalability and Performance​

We select networks capable of handling high transaction volumes without compromising speed or reliability.

Available Standards (ERC-20, ERC-721, etc.) 

We analyse the standards supported by each blockchain to ensure compatibility, interoperability, and long-term development sustainability.

 Gas Costs

We assess transaction costs based on the expected type of operations, prioritising networks that maintain the economic efficiency of the contract.

Quality of Technical Documentation​

Clear and complete documentation helps reduce implementation risks and ensures the long-term maintainability of the project.

Community and Support​

We prioritise ecosystems with an active community, ongoing support, and proven technological evolution.

Development and Audit Tools Available

We use networks that offer robust tools for testing, validation, and auditing, key to ensuring the reliability of the smart contract.

Rigour, experience and precision: our way of working​

At Itrion, we don’t improvise. Every smart contract we develop is the result of a meticulous technical process, a deep understanding of the legal and operational implications, and a solid track record that allows us to anticipate risks, optimise results, and deliver solutions that work, scale, and comply.

We know that when a company requests a smart contract, it’s not simply asking for code: it is entrusting the automation of a legal, financial, or asset-based agreement. That’s why we apply a rigorous methodology based on quality standards, secure development principles, and a comprehensive vision of each project.

Mastering the technology — from architecture to the last byte​

Our developers work directly with the core of leading blockchain environments. We don’t just rely on superficial frameworks — we understand internal structures, efficient design patterns, gas limits, low-level vulnerabilities, and best practices for building robust, auditable, and sustainable contracts.

Our technical team is composed of senior professionals with decades of combined experience in programming, distributed architecture, cybersecurity, and critical systems. We have in-depth knowledge of the main languages and standards within the ecosystem (Solidity, Vyper, Michelson, Rust, WASM, among others), and we are fully equipped to work on the leading networks in the market with a production-focused approach.

 Experience that translates into security and control

Experience is not just about time: it means having faced complex situations, designed efficient solutions under pressure, and built systems that continue to operate successfully. At Itrion, we have accumulated the kind of knowledge that enables us to make sound technical decisions from the very first analysis — without relying on trial and error, guesswork, or approximations.

This knowledge is reflected in how we model contract logic, structure code to prevent unexpected conditions, design architectures that are resilient to failures or attacks, and define governance and upgrade mechanisms when the contract is intended to evolve.

 Regulatory precision and legal adaptability

We understand that every contract operates within a legal context. That’s why we work hand in hand with specialised advisors to ensure that the smart contract design complies with applicable legal principles, meets tax requirements, and is legally enforceable if needed.

This balance between technical and regulatory rigour enables us to deliver viable, robust solutions aligned with the demands of business, institutional, and financial projects.

Our commitment: quality without compromise

In a market saturated with quick fixes, template copies, and unaudited code, Itrion stands firm: we do not deliver anything that falls short of the highest standards. Every contract undergoes internal processes of technical review, functional validation, and controlled testing.

Our clients trust us because we don’t sell hype — we deliver results. Because we speak plainly, work with precision, and understand what’s at stake. And because for years, we’ve made smart contract automation not just a promise, but an operational, secure, and scalable reality.

When technology truly matters, knowing how to code is not enough


At Itrion, we understand that a smart contract is not an experiment, nor just a piece of software. It is a critical tool capable of automating economic decisions, value transfers, and contractual rights — all with real-world consequences. That’s why we treat every project with the rigour it deserves: we analyse the context, precisely model the operational logic, thoroughly review every instruction, and validate its behaviour under multiple scenarios. We don’t outsource control, we don’t work with insecure templates, and we never promise what we cannot guarantee. Our obsession is reliability — because once a contract is deployed on the blockchain, there’s no turning back.

What sets us apart is not just our technical expertise, but the responsibility with which we approach every implementation. We don’t deliver code just to tick a box — we deliver solid structures that withstand time, audits, users, and the unexpected. That is our standard. We work with companies that require serious, reliable solutions aligned with their strategic goals. And we do so with the confidence of those who never improvise, because we’ve spent years building on a single foundation: technical excellence and an unwavering commitment to quality.




Key Performance Indicators in Our Smart Contract Delivery


The quality of a smart contract is proven in production, not in promises. At Itrion, we measure our performance through real metrics that reflect not only our technical capability but also the reliability of our solutions in demanding environments.

Over the past few years, we have developed, deployed, and maintained smart contracts that automate critical processes for companies and organisations that cannot afford errors.

These indicators are not a statement of intent — they are the result of a way of working grounded in rigour, experience, and absolute respect for every line of code that impacts a real-world process. 

+800

Over 800 smart contracts executed with no critical incidents

+10

Multi-network coverage across more than 10 blockchains (EVM and non-EVM)

100%

100% success rate in controlled deployments

<10

Average delivery time per contract: under 10 days for standard projects

0

Zero unresolved vulnerabilities in production

100%

100% of enterprise clients return or recommend us

At Itrion, we provide direct, professional communication aligned with the objectives of each organisation. We diligently address all requests for information, evaluation, or collaboration that we receive, analysing each case with the seriousness it deserves.

If you wish to present us with a project, evaluate a potential solution, or simply gain a qualified insight into a technological or business challenge, we will be delighted to assist you. Your enquiry will be handled with the utmost care by our team.