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Blockchain, Web3 e ativos digitais

Desenvolvimento de contratos inteligentes

Projeto, implementação e testes de contratos inteligentes em Solidity, Rust e Move, escritos para serem legíveis, preparados para atualizações e prontos para auditoria independente.

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Visão geral

A deployed smart contract is public, adversarial and difficult to change. That reality shapes how we work: small surface areas, explicit access control, well-understood libraries, and a test suite that tries hard to break the code before anyone else does.

We write contracts for EVM chains in Solidity, for Solana in Rust with Anchor, and for Move-based networks such as Aptos and Sui. Every engagement ends with code an independent auditor can review efficiently: documented, tested and free of avoidable surprises.

Aplicações de negócio

  1. 01

    Token contracts

    Fungible and non-fungible tokens built on ERC-20, ERC-721 and ERC-1155, and permissioned tokens on ERC-3643 where transfers must respect identity and eligibility rules defined by the issuer and its counsel.

  2. 02

    Business and protocol logic

    Escrow, vesting, multi-party approval, registry and governance contracts that encode agreed rules, with role-based access control, pausability and timelocks applied wherever the risk profile calls for them.

  3. 03

    Upgradeable systems

    Transparent, UUPS or diamond proxy patterns when upgradeability is a genuine requirement, paired with storage layout checks and governance controls so that an upgrade path cannot quietly become a backdoor.

  4. 04

    Smart accounts and account abstraction

    ERC-4337 smart accounts, paymasters and session-key modules that let applications sponsor fees, batch actions and apply spending policies without forcing users to manage gas or raw transactions.

Abordagem de engenharia

  1. 01

    Specification first

    We write a plain-language specification of intended behavior, invariants and privileged roles. It becomes the reference for tests, audits and later changes, and it surfaces ambiguity early.

  2. 02

    Library-first implementation

    We build on audited OpenZeppelin or Solady components wherever possible and keep custom logic small, explicit and commented, following checks-effects-interactions and current compiler guidance.

  3. 03

    Adversarial testing

    Unit tests, stateful fuzzing and invariant testing in Foundry or Echidna, plus static analysis with Slither and Aderyn, target reentrancy, access control, rounding and oracle manipulation risks.

  4. 04

    Formal methods where warranted

    For high-value or tightly constrained logic, we identify properties suited to formal verification tools such as Certora Prover or Halmos and bring in specialists when that depth is justified.

  5. 05

    Audit readiness and deployment

    We assemble an audit package with specification, coverage and known limitations, support remediation, and run scripted, reproducible deployments with source code verified on block explorers.

Tecnologias e plataformas

Languages

  • Solidity
  • Vyper
  • Rust (Anchor)
  • Move (Aptos and Sui)

Frameworks and libraries

  • Foundry
  • Hardhat
  • OpenZeppelin Contracts
  • Solady
  • Anchor

Testing and analysis

  • Foundry fuzz and invariant tests
  • Echidna
  • Slither
  • Aderyn
  • Halmos
  • Certora Prover

Standards

  • ERC-20
  • ERC-721
  • ERC-1155
  • ERC-3643
  • ERC-4337
  • EIP-2612

Os nomes de tecnologias são marcas registradas de seus respectivos proprietários e não implicam parceria ou endosso.

O que você recebe

  • Contract specification with invariants and role definitions
  • Source code with NatSpec documentation
  • Unit, fuzz and invariant test suites with coverage reports
  • Static analysis results and remediation log
  • Audit-readiness package and auditor support
  • Reproducible deployment scripts and verified contracts

Perguntas que os líderes fazem

Do you audit the contracts you write?

No. We test rigorously and prepare code for audit, but an author cannot independently audit their own work. For contracts that will hold or move meaningful value, we recommend an independent audit firm and support the process through remediation and re-review.

Should our contracts be upgradeable?

It depends on the trust model. Upgradeability lets you fix defects, but it also creates an administrative authority that users must trust. We weigh both, and when upgrades are needed we pair them with timelocks, multisig control and published governance procedures.

Which chains can you deploy to?

We work across EVM-compatible networks, including Ethereum, Arbitrum, Optimism, Base and Polygon, as well as Solana and Move-based chains. Chain selection should follow your users, security requirements, fee profile and ecosystem tooling rather than trends.

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Infraestrutura de ativos digitais

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