From blockchain protocols and distributed infrastructure to AI-agent threat detection, we engineer systems built to endure.
Ophelios is a development studio founded on the belief that great software comes from people who build it themselves. We combine deep technical expertise with a hands-on approach: no layers of management, no outsourcing. Just direct access to the engineers who write the code.
Ethereum
Solidity
Chainlink
React
PostgreSQL
Node.js
Ethereum
Solidity
Chainlink
React
PostgreSQL
Node.js
PHP
Docker
TypeScript
Web3.js
Ledger
ENS
PHP
Docker
TypeScript
Web3.js
Ledger
ENS
From privacy compliance and on-chain protocols to a real-world service company. Four ventures in the wild, built on open-source tools we craft and maintain ourselves.
Privacy compliance, turned into provable accountability.
Consent accountability platform built for Quebec's Law 25. Every consent produces a verifiable receipt, every access lands in a tamper-evident log anchored on-chain, and anyone can independently verify a record without trusting the platform.
Verifiable memory for source code.
Memory infrastructure for software. Preserves verifiable, immutable evidence of what source code existed at a given point in time, built on Ethereum.
The software suite for Quebec's volunteer action centres.
Meals-on-wheels, accompanied transport, friendly calls, safety checks and volunteer management on a single record, with PSOC reporting. Built for Law 25, hosted in Canada, hand in hand with Ophelios.
Threat intelligence for the agentic era.
Decentralized threat intelligence protocol for AI-agent security. Sub-millisecond threat detection with distributed antibody sharing and blockchain-settled consensus.
The craft underneath the products: frameworks and security tooling we build, use daily and maintain in the open.
A modern PHP framework built for performance and developer experience. Over 10 years of active development.
Source
A static site generator for documentation and landing pages. Powers this site and CodeQuill docs.
Visit
Open-source wallet recovery tool using EIP-7702. Rescues crypto assets from compromised wallets through atomic transactions that eliminate sweeper bot front-running.
VisitWe deliver end-to-end, from architecture to deployment. Each engagement is tailored, never templated.
Distributed software infrastructure and decentralized security protocols on EVM-compatible chains. We work with Solidity, Hardhat, and Chainlink to build full-stack blockchain applications from testnet to mainnet. Whether you need a new protocol, a token system, or on-chain governance, we handle the entire lifecycle.
Threat intelligence and security infrastructure for autonomous AI agents. We build detection systems for prompt injection, tool misuse, and adversarial inputs. Our work on the Immunity protocol delivers sub-millisecond threat scoring and distributed antibody sharing, giving AI agents real-time protection without centralized bottlenecks.
Strategic guidance on blockchain adoption, architecture decisions, and AI integration. We run hands-on workshops for development teams and provide ongoing advisory for technical leadership. The goal is to transfer knowledge, not create dependency.
Smart contract audits, vulnerability assessments, and security-first architecture design. We review every line before deployment, identify attack vectors, and harden each layer. Our approach is defense in depth: if one layer fails, the next catches it.
Web applications, APIs, and ERP systems built with modern frameworks and battle-tested architectures. From early-stage MVPs to production platforms managing real business operations. We build on our own open-source framework, Zephyrus, giving us full control over every component.
Building, competing, and connecting across the Ethereum ecosystem.
