Alain Nicolas

Linea Developer Hub

Sat, 03 Jan 2026 00:00:00 +0000

Project Context

The Linea ecosystem is experiencing rapid growth, with numerous apps and protocols deployed. To support this expansion, Linea needed a unified portal allowing developers to manage their presence in the ecosystem autonomously.

Linea Developer Hub was born from this need: a self-service back-office where development teams can submit their applications, manage their events, link their tokens, and track their analytics.

Key Features

App Submission

A multi-step submission process allows developers to register their applications:

Linea Hub

Sat, 03 Jan 2026 00:00:00 +0000

Project Context

Linea needed a platform to showcase its growing ecosystem. Beyond a simple directory, the goal was to create an engagement hub capable of attracting and retaining users through gamification mechanics.

Linea Hub addresses this need by combining application discovery, market data aggregation, and a daily rewards system.

Key Features

App Directory

A comprehensive catalog of applications in the Linea ecosystem:

Category Navigation: DeFi, NFT, Gaming, Infrastructure, etc.
Detailed Listings: description, links, contracts, statistics
Analytics Integration: usage data via Dune Analytics
Leaderboard: apps ranked by popularity

Strava Segment Attestations

Sat, 03 Jan 2026 00:00:00 +0000

Project Context

What if your athletic performances could become permanent cryptographic proofs? Strava achievements remain locked within the app today, with no way to prove them verifiably elsewhere.

Strava Segment Attestations creates a bridge between the sport world and Web3, allowing athletes to transform their completed Strava segments into permanent onchain attestations on the Linea blockchain.

Value Proposition

For Athletes

Permanence: unlike screenshots, attestations are immutable

Verification: anyone can verify the authenticity of your performances

Discord Attestation

Fri, 02 Jan 2026 00:00:00 +0000

Project Context

In the Web3 ecosystem, digital identity remains a major challenge. How do you prove who you are without compromising your privacy? How do you link your social identities to your wallet without relying on a central authority?

Discord Attestation addresses this need by allowing users to create cryptographic proofs of their Discord identity, permanently stored on the Linea blockchain via the Verax protocol.

Key Features

The application offers a smooth user experience in three steps:

Proof of Audit

Fri, 02 Jan 2026 00:00:00 +0000

Project Context

The smart contract audit industry suffers from a trust problem: how do you prove that a contract has actually been audited? PDF reports can be forged, website badges easily copied, and no standard exists to verify these claims independently.

Proof of Audit transforms traditional audits into verifiable cryptographic proofs, permanently stored on the blockchain via the Verax protocol.

The Problem Solved

Current Situation

Protocols display "Audited by X" with no onchain proof
PDF reports can be modified or misrepresented
No standard way to verify an audit occurred
Fake audit firms proliferate
Information asymmetry hurts investors

Bunny Universe

Mon, 02 Jun 2025 00:00:00 +0000

Bunny Universe: Ecosystem enhancement

Contacted by @Supertramp in December 2024, I developed several tools to enhance the experience of Bunny Universe members, a popular NFT community on Linea. These tools improve interaction with the collection and give access to relevant data.

Project context

Bunny Universe is a major NFT collection on Linea. As a developer passionate about the ecosystem, I created several components to improve user experience and make the collection’s data more accessible.

Linea Token API

Mon, 02 Jun 2025 00:00:00 +0000

For the past few months, we’ve been working on a new piece of infrastructure for builders in the Linea ecosystem: the Token API.

The idea is simple: give easy, fast, and reliable access to key information about ERC-20 tokens on Linea. Prices, metadata, stats, etc. Everything you need to plug into a dashboard, a dapp, a bot, an explorer, or anything else.

The API is already live in Linea Hub, the entry point to explore the Linea ecosystem, and in MetaMask Portfolio.

Linea Proof-of-Humanity API

Sun, 01 Jun 2025 00:00:00 +0000

Project Context

Sybil attacks represent one of Web3’s major challenges: how do you ensure that an address corresponds to a unique human and not a bot or multiple accounts controlled by the same person?

Linea Proof-of-Humanity (PoH) is an infrastructure for verifying that an Ethereum address belongs to a verified human user while preserving their privacy. The system relies on the Verax attestation protocol and offers onchain integration via EIP-712 signatures.

eFrogs Attestation

Wed, 26 Feb 2025 18:00:00 +0000

eFrogs Attestation: Prove your Membership on Linea

Do you own eFrogs on Linea and want to prove your membership in this amazing community? With eFrogs Attestation, you can now do so using Verax.

Project Context

In April 2024, this project was created during a hackathon hosted by Linea and eFrogs. Developed in collaboration with Orion, it won second place in the competition. Initially built as a prototype, the project has evolved into a fully functional app deployed on the mainnet.

Snaps Permissionless Distribution

Tue, 23 Jan 2024 00:00:00 +0000

The context

Since the launch of the MetaMask platform allowing the creation and use of "plugins" on the wallet, these "Snaps" must be validated by Consensys. Indeed, it is necessary to verify that they respect the imposed security rules, but also the good development and marketing practices pushed by the platform.

This validation being totally centralized and relying only on a company, one can see an opposition to the thesis of decentralization and freedom advocated by the web3 ecosystem.

Verax Attestation Registry

Sat, 20 Jan 2024 00:00:00 +0000

The context

The first event of the "Linea Voyage", a quest where participants had to discover the ecosystem of applications and protocols deployed on Linea, met with major enthusiasm. Added to this is the possibility of an airdrop on the same network. Almost automatically, these circumstances led to the appearance of "sybils", in other words, multiple Ethereum accounts owned by a single person, to maximize their exposure to a potential airdrop.

Lineaster

Sat, 30 Dec 2023 00:00:00 +0000

The context

As part of the launch of its ZK-EVM type network, Consensys wanted to organize an event to invite as many users as possible to interact with the network. Indeed, it was both about making it known, and testing its ability to support a large number of users.

But to bring a large number of testers, they needed a reason to come. That’s why, during the "Testnet Voyage", Consensys chose to rely on applications around DeFi, but also identity with the ENS protocol, or the Lens protocol for the social aspect.

Crypto-lending Platform

Fri, 15 Dec 2023 00:00:00 +0000

The client

For confidentiality reasons, the name of this client cannot be revealed. They are a company already well established in the web3 domain, looking to expand their reach.

The project

The project involves the creation of a centralized cryptocurrency lending platform, against collateral provided by users.

Therefore, it was necessary to create a user interface that is understandable and clear enough to attract the largest number, but also to provide all the standard features in this type of application. This interface also comes in an "administrator" version to set the cryptocurrencies available as collateral or to borrow, the current loan offers, etc.

RoxTheCasbah

Sat, 06 May 2023 15:00:28 +0000

The context

Creation of a blog for my partner, RoxTheCasbah, to share her passion for knitting and sewing.

The technical solution

The first version

The first version of the site used Ghost, a complete blogging solution competing with WordPress. Based on an open-source and free tool, the blog was hosted on a small AWS machine.

The second version

In January 2021, I chose to switch to a static site generator, Hugo, in order to be able to host the generated pages for free.

This Site

Sat, 06 May 2023 15:00:28 +0000

Context

Creation of this site to introduce myself and share my passions.

My first desire was to showcase my skills in a more controlled way than, for example, on LinkedIn. Similarly, in order to efficiently centralize the articles I have written on Medium or Talan Labs' blog, I needed a blog.

Technical Solution

The Tool

This site is designed using a static site generator, Hugo, and hosted for free thanks to "GitHub Pages" service.

Atelier 58

Sat, 18 Dec 2021 15:00:00 +0000

The context

Creation of the showcase site for the hair salon "Atelier 58" in Paris.

The technical solution

Tools

This site is designed using a static site generator, Hugo.

Integration of the Planity service for making appointments.

Implementation of navigation statistics tracking via Insights.

Theme

In order to save time, but also to best meet the needs of such a business, I started from the theme "Hugo Hero Theme".

Hosting

This site is hosted via Netlify.

BNP CIB - Blockchain-as-a-Service

Sun, 14 Nov 2021 00:00:00 +0000

The Client

As a major player in the banking sector, BNP Paribas must stay at the forefront of available technologies. This is how blockchain and DLT technologies have become essential.

Like many large companies, BNP is divided into several entities that can all participate in the same project, which is not without raising challenges around collaboration.

The Project

To allow all BNP entities to experiment on the blockchain before easily joining a decentralized consortium, it was necessary to make accessible technologies that we can qualify as exotic.

Coface

Sun, 14 Nov 2021 00:00:00 +0000

The client

Coface is a major player in credit insurance. In order to remain competitive and gain new market share, the company needs to regularly offer new software products and solutions to its customers.

The project

Optimization and evolution of a web application (Cofanet Policy Master & Cofanet Policy Master Administration) for paying customers.

To achieve this, a technical refactoring of the project architecture and a redesign of the major features of the application were needed.

e-Paye

Sun, 14 Nov 2021 00:00:00 +0000

The client

e-Paye develops software dedicated to HRIS: payroll, digital safe, HR management, interview management, etc.

The project

Among the e-Paye modules, the one allowing the generation of payslips is particularly important and complex. Indeed, it must take into account sometimes changing legislation, but also be able to generate a large number of payslips in a short amount of time.

Technical stack

Client-side

JavaScript, HTML5, CSS3, jQuery, Ajax

Server-side

Spring (Core, MVC, Security, Data)
Java 8

EDF Commerce - Craftsmanship Evangelization

Sun, 14 Nov 2021 00:00:00 +0000

The client

EDF Commerce’s Digital Department has a dedicated team for PoC realization for the group’s various businesses.

The mission

The mission is to evangelize on the concepts of craftsmanship and industrialize the best practices to be implemented. This is how I was able to initiate the implementation of the first CI/CD pipelines via GitLab and Jenkins, but also push the use of SonarQube for code quality monitoring and Nexus for depositing generated artifacts.

FuturMaster - Calibrate Model

Sun, 14 Nov 2021 00:00:00 +0000

The Client

FuturMaster, a software editor specializing in supply chain management, called on Talan Labs to reinforce its development teams and speed up the redesign of its tool suite.

The Project

That’s how I became part of the first agile squad, made up of 3 developers, 1 designer and 1 Scrum Master. We were tasked with the redesign of the Calibrate Model module, which aims to display the sales history of a product and simulate its future sales.

FuturMaster - Master Data

Sun, 14 Nov 2021 00:00:00 +0000

Client

FuturMaster, a software editor specializing in supply chain management, called upon Talan Labs to strengthen its development teams and accelerate the revamp of its suite of tools.

Project

Following the success of the first Talan Labs squad’s intervention at FuturMaster on the Calibrate Model project, we embarked on the revamp of the Master Data module, which centralizes the data repository that feeds the other software suite modules.

In parallel with the development of functional user stories, there are many technical topics to consider, such as a reflection on the future database best suited to the specifics of the objects to be manipulated.

Gefco - Opteam

Sun, 14 Nov 2021 00:00:00 +0000

The client

Gefco is a major player in logistics and in particular in the transportation of automotive parts.

The project

Development of a scheduling system under constraints.

Technical stack

Desktop application

Java Swing

Database

OracleDB

Share2gether

Sun, 14 Nov 2021 00:00:00 +0000

Context

Share2Gether aims to create an event organization solution, similar to what Meetup.com offers.

I had the opportunity to share more details about this experience in a dedicated article.

Technical Stack

Client Side

The front-end is a Vue.js application that communicates with smart contracts deployed on the blockchain using the web3.js library.

Blockchain Side

Smart contracts written in Solidity are deployed on an Ethereum blockchain. Standard contracts provided by OpenZeppelin are used.

Talan Coin

Sun, 14 Nov 2021 00:00:00 +0000

The Context

Like all companies, Talan seeks to catalyze collaboration within itself. In addition, Talan wishes to strengthen its unity as a group despite distinct entities and a presence on 4 continents, and develop a horizontal organization far from classic vertical hierarchies.

An internal currency, common to all employees regardless of their location or hierarchical role, makes it possible to find a common point among all the actors in the company. It is also a way to allow everyone to better exchange, including between distinct teams, thus affirming a horizontal hierarchy.

Talan Labs Blog

Sun, 14 Nov 2021 00:00:00 +0000

Context

Maintenance of the Talan Labs blog, writing articles, before a complete overhaul in 2019/2020.

The Talan Labs blog allows for sharing the knowledge of Talan Labs employees.

Technical Solution

Legacy version

The first version of the site used WordPress, a well-known solution.

Overhaul

Given the difficulty of keeping such a site up to date while ensuring its security, we chose to radically change the technology to significantly reduce the attack surface.

VINCI Construction Terrassement - VCoin

Sun, 14 Nov 2021 00:00:00 +0000

The Context

After the success of Talan Coin, the VINCI group wanted to experiment with its own version of the application.

This is how we instantiated the VCoin application, with some specific features setting it apart from Talan Coin.

The Technical Stack

Client Side

Native iOS application
Native Android application
Angular web applications:
- Dashboard for statistical tracking and administration
- Store for objects and services payable in Talan Coins
- Desktop client (not in production)