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Blockchain, Web3 e ativos digitais
Engenharia de aplicações blockchain
Engenharia de ponta a ponta de aplicações que utilizam blockchain onde esta faz verdadeiro sentido: estado partilhado, registos verificáveis e liquidação programável entre partes.
Visão geral
Most blockchain projects struggle with the parts around the chain: key handling, indexing, user experience and operations. We engineer the whole application, from contracts and backend services to data pipelines and interfaces, as one system with clear trust boundaries and testable behavior.
Before any code, we test whether a ledger is the right tool at all. When a shared database would serve better, we say so. When it would not, we design for finality, fee volatility and upgrade paths from the first sprint.
Aplicações de negócio
- 01
Multi-party record systems
Shared registries where several organizations need a common, tamper-evident record of provenance, certifications or attestations without any single party controlling the database. On-chain anchors pair with off-chain storage so sensitive data never lands on a public ledger.
- 02
Programmable settlement workflows
Business processes where meeting one condition should release the next step automatically, such as escrow-style flows and milestone releases, encoded in tested contract logic instead of being reconciled by hand across separate systems.
- 03
Verifiable credentials and attestations
Issuing and checking memberships, licenses and completion records using standards such as W3C Verifiable Credentials and the Ethereum Attestation Service, so third parties can verify claims without calling back to the issuer.
- 04
Permissioned and consortium networks
Deployments on Hyperledger Fabric or permissioned EVM networks such as Hyperledger Besu, where participants are known, privacy requirements are strict and governance must be written down before the first node goes live.
Abordagem de engenharia
- 01
Fit assessment
We map actors, trust assumptions and data sensitivity to decide what belongs on-chain, what stays off-chain, and whether a ledger is justified at all.
- 02
Architecture and threat model
Contracts, indexers, APIs, key management and frontends are designed together. A written threat model names privileged roles, upgrade authority, oracle dependencies and failure modes before implementation starts.
- 03
Contract and service build
Smart contracts are developed test-first in Foundry or Hardhat, while backend services, event indexing and APIs are built in parallel against local forks and public testnets.
- 04
Verification and hardening
Unit, fuzz and invariant tests, static analysis and peer review prepare the codebase for an independent audit. Findings are tracked to closure rather than filed and forgotten.
- 05
Launch and operations
Staged deployment moves from testnet to mainnet with monitoring, alerting, runbooks and incident procedures in place before real users or real value touch the system.
Tecnologias e plataformas
Chains and networks
- Ethereum
- Arbitrum
- Optimism
- Base
- Polygon PoS
- Solana
- Hyperledger Besu
Contract development
- Solidity
- Foundry
- Hardhat
- OpenZeppelin Contracts
- Rust with Anchor
Application layer
- TypeScript
- viem
- wagmi
- ethers.js
- Next.js
- Node.js
Data and infrastructure
- The Graph
- Chainlink
- IPFS
- PostgreSQL
- Alchemy
- Infura
Os nomes das tecnologias são marcas registadas dos respetivos proprietários e não implicam parceria nem aprovação.
O que recebe
- Fit assessment with an on-chain and off-chain data boundary
- System architecture and written threat model
- Tested smart contracts with deployment scripts
- Backend services, indexers and APIs
- Web or mobile client with wallet connectivity
- Operational runbooks, monitoring and an audit-preparation package
Perguntas frequentes dos líderes
How do you decide whether a project actually needs a blockchain?
We look for several parties who do not fully trust one another, a need for a shared and verifiable record, and a reason no single operator should control it. If those conditions are missing, a conventional database is usually cheaper, faster and easier to govern, and we will recommend it.
Do you build on public or permissioned networks?
Both. Public networks such as Ethereum and its rollups suit applications that need open verification and composability. Permissioned networks like Hyperledger Fabric or Besu suit consortiums with known participants and strict privacy rules. The choice follows governance, privacy and integration requirements rather than preference.
Can a blockchain application integrate with our existing systems?
Yes, and most should. We typically connect contracts to ERP, CRM and identity systems through event-driven services and indexed data, so enterprise teams keep working in familiar tools while the ledger maintains the shared record underneath.
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