Blockchain & Web3 Development Company in São Paulo

Where you land depends on which of these you commission: a production-grade smart-contract audit with a recognised firm (OpenZeppelin, Trail of Bits, Halborn, Quantstamp), a DeFi or tokenised-receivable MVP, exchange-integration platform, or NFT marketplace, or a Lei 14.478 PSAV-ready exchange or custody build (matching engine, order book, segregation, proof-of-reserves, KYC and AML stack, BCB authorisation evidence). Scope drivers include contract complexity and Solidity or Rust lines reviewed. Sao Paulo blockchain budgets cluster in those bands. We quote in Brazilian reais with a USD conversion at recent rates, and assume CVM and BCB filings run in parallel.

Lei 14.478 of 2022, signed 21 December 2022 and effective June 2023, was the first comprehensive crypto framework in Latam. It defines virtual assets, designates PSAV (Prestadora de Servicos de Ativos Virtuais) as the regulated category for intermediaries (exchanges, custodians, brokers, transfer service providers, administrators, issuers in some interpretations), and centralises licensing under the BCB. PSAVs must register with the BCB, maintain corporate governance and capital adequacy under the BCB Normative Instructions implementing the law, segregate client virtual assets from proprietary assets (a key requirement that addresses the post-FTX concern globally), implement KYC and AML aligned with COAF (Conselho de Controle de Atividades Financeiras) requirements, and report suspicious transactions. The CVM retains jurisdiction over crypto assets that qualify as securities under CVM Parecer 40 of 2022. The law sets criminal penalties for fraud involving virtual assets (Article 171-A of the Brazilian Penal Code) with 4 to 8 years imprisonment, materially stiffer than civil fraud.

CVM (Comissao de Valores Mobiliarios, the Brazilian securities regulator) issued Parecer de Orientacao 40 in October 2022, which sets out the Brazilian equivalent of the US Howey test for whether a crypto asset qualifies as a security. The test asks whether the token represents a collective investment contract under Lei 6.385 of 1976 (offer of investment, formal or informal contract, common enterprise, expectation of profit, profit from third-party effort). Where the test is met, the asset is a security and full CVM jurisdiction applies, including Resolucao 88 of 2022 on crowdfunding (for smaller offerings up to BRL 15M with simplified requirements), full prospectus regime for larger offerings, intermediary registration, and disclosure rules. Where the test is not met (most pure payment tokens, utility tokens with no profit expectation), the BCB PSAV regime under Lei 14.478 applies instead. The line is sometimes contested, and our discovery phase produces a CVM Parecer 40 classification memo that securities counsel can rely on.

Yes. Drex (the rebranded Real Digital programme, the Brazilian sovereign CBDC) has been in pilot since 2023 with a consortium of BCB Lift Labs plus major banks (Itau, Bradesco, Santander Brasil, Banco do Brasil, Caixa, Inter, BTG, and others) and infrastructure partners. The pilot runs on Hyperledger Besu (EVM-compatible permissioned chain) with a privacy layer that has been the focus of phase 2 and 3 testing, exploring zero-knowledge approaches and Anonymous Zether-style designs. Use cases tested include programmable money, DvP settlement of tokenised assets (federal bonds, tokenised receivables), and offline payment scenarios for inclusion. We engineer Drex-compatible smart contracts (EVM Solidity adapted to the Besu permissioned environment, privacy-aware design patterns), consortium-bank integration through the participant banks, and tokenised-asset DvP flows. The pilot is moving toward broader rollout and timing decisions sit with BCB.

Tokenised receivables are one of the most active RWA-tokenisation use cases globally, with Brazilian platforms shipping at scale since 2022. The pattern: a commercial-credit receivable (an invoice owed by a buyer to a supplier) is placed on-chain as a token, structured as either a CVM Resolucao 88 of 2022 crowdfunding offering (smaller offerings up to BRL 15M with simplified disclosure) or a full CVM prospectus offering for larger pools, and traded by qualified investors. Settlement integrates with Pix for fiat-in and fiat-out and with custodian wallets for the token leg. We engineer the smart contracts (Solidity or Cosmos SDK), the issuance and KYC flow, the custodian integration, the Pix-onchain settlement bridge, the CVM disclosure templates, and the receivable-data oracles that confirm payment of the underlying invoice. Brazil’s position as a major agribusiness exporter has driven a parallel CRA (Certificado de Recebiveis do Agronegocio) and CPR-Financeira tokenisation pillar.

Pix is the BCB instant-payment rail launched November 2020, running on a 10-second end-to-end SLA and processing several billion transactions per month, the global benchmark for real-time retail payments. Combining Pix with on-chain settlement creates a uniquely Brazilian payments primitive: a buyer initiates a Pix transfer, the funds settle in 10 seconds at the BCB SPI rail, and the corresponding token (tokenised receivable, Drex, stablecoin, or DeFi asset) settles atomically on-chain through a bridge contract. We engineer the bridge architecture (custodian-held escrow, oracle confirmation of Pix settlement, atomic-swap smart contract on the token leg), the MED (Mecanismo Especial de Devolucao) refund-flow handling on the Pix leg, and the BCB Resolucao 4.658 cyber overlay since the bridge participant is typically also a regulated FI. Drex when generally available is expected to native-settle this flow without bridge contracts.

Receita Federal Instrucao Normativa 1888 of 2019 established mandatory monthly reporting of crypto transactions by Brazilian exchanges and by individuals exceeding monthly thresholds. The Lei 14.754 of 2023, the offshore investment reform effective January 2024, materially changed taxation of crypto held abroad: gains on offshore crypto are now taxed at 15 percent annually on accrued income regardless of realisation (the so-called come-cotas equivalent), with offsetting rules within the same fund or asset class. Domestic crypto gains on Brazilian exchanges remain taxed on realisation under the prior progressive regime (15 to 22.5 percent depending on gain bracket). We engineer the IN 1888 reporting pipeline for PSAVs (monthly DEC submission to Receita Federal), the Lei 14.754 offshore-tracking for clients holding through foreign exchanges, and the tax-reporting export for individual investors. Final tax positions sit with the client’s Brazilian tax counsel.

Yes, and yes meaningfully different. Brazilian Portuguese (pt-BR) and European Portuguese (pt-PT) diverge in vocabulary (celular versus telemovel for mobile phone, arquivo versus ficheiro for file, cadastro versus registo for registration), grammar (Brazilian uses voce as default second-person while European uses tu, gerundio is heavily Brazilian while infinitive constructions are more European), spelling (post-Acordo Ortografico 1990 most differences narrowed but Brazilian conventions still differ), tone (Brazilian tends informal-direct, European more formal), and idiom. A wallet UI written in pt-PT reads as foreign to a Sao Paulo user and depresses conversion. We engineer pt-BR-native UI, copywriting reviewed by Brazilian copy editors (often differing dialects within Brazil, with Sao Paulo paulistano speech as the default neutral register for national products), and localised error messaging that respects Lei 14.478 plus CDC Consumer Code disclosure rules. We also support pt-PT as a separate locale for European Portuguese clients.