Blockchain and smart contract development
Reliable, verifiable smart contracts, designed and audited with rigour. We first help you decide whether a blockchain really fits your need, then we implement it properly.
What we do
- 01
Smart contracts
Design and development of readable, tested and documented smart contracts that enforce rules without an intermediary.
- 02
Code audit
Review of existing smart contracts, vulnerability hunting and concrete recommendations before going live.
- 03
Traceability and certification
Timestamping and proof of authenticity for documents, products or diplomas, verifiable by anyone.
- 04
Integration with your apps
Connecting the blockchain to your websites and software, with a simple experience for your users.
Our solutions in detail
Smart contract development
What a smart contract is, when it is useful, how it is designed, tested and deployed, and what drives the cost of the project.
LEARN MORESmart contract audit
Why have a smart contract audited, how the audit works, what the report contains and what drives its cost.
LEARN MORETraceability and certification
Proving a product's origin, a document's date or a diploma's authenticity with a blockchain, and what to check before you start.
LEARN MORE
Blockchain for business: practical uses by sector
A blockchain is a shared ledger, copied across many computers, in which every entry is timestamped and cannot be quietly altered afterwards. Its value to a business lies not in the technology itself but in the trust it creates when several parties need to rely on the same information. Here are realistic uses for businesses and public bodies, in Haute-Corse and elsewhere.
- 01
Food and local produce
Tracing the origin and production stages of a product, from producer to consumer, to support a quality or origin scheme.
- 02
Education and training
Issuing certificates and diplomas that an employer can verify online, without having to contact the institution.
- 03
Local authorities and public bodies
Proving when a document, regulation or council decision was published, and that it has not been changed since.
- 04
Construction and industry
Timestamping handover reports, inspection reports and readings, giving the client, contractors and insurers a shared proof.
- 05
Creative work and intellectual property
Building proof that a work, a design or a piece of source code existed on a given date.
- 06
Business partnerships
Automating rules agreed between several partners, such as approval steps, without any one of them controlling the ledger alone.
Public, private or consortium blockchain: making the right choice
Not every blockchain suits professional use. The choice rests on three questions: who needs to read the data, who needs to write it, and how long the proof must remain verifiable.
A hybrid approach is common: your data stays in your own systems and only its digital fingerprint is recorded on a public blockchain. A fingerprint is a short code calculated from a file, which reveals nothing of its content.
- 01
Public blockchain
Open to all, like Ethereum. It offers the most independent verification, at the cost of variable usage fees and full transparency of whatever is recorded on it.
- 02
EVM-compatible networks
The EVM, or Ethereum Virtual Machine, is the engine that runs smart contracts on Ethereum and on many compatible networks. Building for the EVM keeps your choice of network open.
- 03
Private or consortium blockchain
Restricted to identified participants, for example the members of a supply chain. It offers more control but needs someone to host and maintain it, and its value as proof depends on its participants.
Blockchain and regulation: GDPR, MiCA and legal value
A serious blockchain project builds in the legal side from the design stage. Three topics come up every time.
- 01
Personal data
An entry on a blockchain cannot be erased, whereas the GDPR provides a right to erasure. We therefore never record personal data on-chain: only fingerprints or technical references go there, and the data itself stays in your systems.
- 02
Tokens and crypto-assets
A project that issues or circulates tokens may fall under specific regulation, in particular the EU's Markets in Crypto-Assets Regulation (MiCA). Legal advice is essential before any development. We give no investment advice and do not promote any crypto-asset.
- 03
Legal value
Proof recorded on a blockchain is strong technical evidence, but its legal weight depends on the context. For contractual or regulatory use, we recommend having it reviewed by your legal adviser.
How a blockchain project runs, from idea to launch
Based in Bastia, we work with startups, SMEs and public bodies, in Corsica and beyond, with a single point of contact: Alexandre Sciacca, a full-stack engineer with more than ten years of experience. You get a reply within 48 hours and a clear quote before you commit to anything.
- 01
Understand
We first check that a blockchain brings a real benefit to your project, by working out who needs to trust what, and why.
- 02
Design
Choice of network, of what goes on-chain and what stays in your systems, and a plain-English description of the smart contract rules.
- 03
Build and test
Writing the code, automated tests, deployment to a test network, then an audit before anything goes live.
- 04
Launch and support
Deployment, integration with your tools, documentation and support once the service is live.
What blockchain does not do, and what we do not offer
A blockchain can prove that information has not been changed since it was recorded; it says nothing about whether that information was accurate in the first place. The quality of the data entered, human checks and the security of your own systems remain essential.
Our work is limited to consulting and technical services: designing, developing, auditing and deploying smart contracts, and integrating them with your applications. We do not offer investment advice, issue or promote crypto-assets, or manage funds on behalf of others.
Who this service is for
Startups, businesses and institutions that need trust, transparency or traceability. We will tell you plainly when a regular database is enough.
How we work
- T-3
Understand
We listen to your goals, budget and timeline. A clear quote, no jargon.
- T-2
Design
We map out the solution and the mock-ups, which you approve before any development starts.
- T-1
Build
We develop and test. You follow progress at every step.
- T-0
Launch & support
Go-live, then hosting, maintenance and improvements over time.
Technologies and methods
- Solidity
- Ethereum / EVM
- Automated testing
- Code audit
- TypeScript
Frequently asked questions
Do I really need a blockchain?
Not always. When several parties must share data without trusting each other, it can help; otherwise a regular solution is often simpler and cheaper. Our advice is fully transparent.
How do you secure a smart contract?
With automated tests, a rigorous code review and simulated attack scenarios before anything goes live.
Can you audit a contract that is already deployed?
Yes. We analyse the code and its behaviour, then hand you a clear report with the risks found and the recommended fixes.
Do we need to buy cryptocurrency to use a blockchain?
On a public blockchain, every entry incurs network fees paid in that network's own currency. For business use, these fees are treated as a technical cost and built into the architecture, so your users have nothing to handle. On a private blockchain, such fees do not exist in that form.
Does a blockchain use a lot of energy?
It depends on the network, and more precisely on how it validates entries. Networks based on proof of work, such as Bitcoin, are very energy-hungry; those based on proof of stake, such as Ethereum since 2022, use far less. We take this into account when choosing a network.
Can you develop the smart contract for a token project?
We can work on the technical side only if the project has first been reviewed by a lawyer, particularly with regard to MiCA. We take no part in promoting or marketing tokens.