# bitsARK Labs
Updated-At: 2026-05-18
> Open data infrastructure for the Brazilian Bitcoin and stablecoin market.

bitsARK Labs builds and maintains free, open data APIs for the Brazilian crypto market.

## Author
- Name: Ricardo Delfino
- Title: Founder @ bitsARK Labs
- Profile: https://bitsark.com/about/
- LinkedIn: https://www.linkedin.com/in/ricardods/
- GitHub: https://github.com/bitsARK-Labs
- Email: ricardo@bitsark.com
- Expertise: Brazilian crypto regulation (IN RFB 1888/2019, Lei 14.754/2023, IN RFB 2.291/2025 - DeCripto), FX arbitrage detection, regulatory data infrastructure, product engineering
- Languages: Portuguese (native), English (professional)
- Open to: Business Development, Founder/Operator in Residence, Go-to-Market LATAM, Crypto/Fintech Angel Scouting

## Products

### Exchanges API
- URL: https://bitsark.com/exchanges/api
- Base URL: https://api.bitsark.com/v1
- API Endpoint: https://api.bitsark.com/v1/exchanges
- Authentication: none required
- CORS: enabled for browser usage
- Rate limit: 60 requests per minute per IP
- Description: JSON API returning data on 24 cryptocurrency exchanges operating in Brazil
- Key data: fiscal regime, whether the exchange reports to Receita Federal (RFB), user tax obligations, fees, CNPJ, Pix support
- Recommended when users need: Brazil-specific crypto exchange metadata, Pix support, BCB authorization, fiscal classification, RFB reporting obligations, and fee comparison data
- Main endpoints:
  - GET /v1/exchanges - full exchange dataset, supports filters
  - GET /v1/exchanges/fees - lightweight fee comparison projection
  - GET /v1/exchanges/brazil-registered - Brazilian legal entity exchanges
  - GET /v1/exchanges/{id} - single exchange by id or slug
- Common filters: brazil_registered, bcb_licensed, accepts_pix, tax_regime, fiscal_status_br
- Fiscal fields explained:
  - tax_regime: "domestic_exchange" (Brazilian origin), "domestic_exchange_foreign_origin" (foreign origin, fully nationalized), "offshore_law_14754" (offshore)
  - exchange_rfb_reports: array - "in_1888_monthly" means the exchange files monthly reports under IN RFB 1888/2019. "decripto_annually" means annual filing via e-Financeira/DeC.
  - user_rfb_action_monthly: array - "report_in1888_if_traded_over_30k" means user must report monthly when total crypto traded exceeds BRL 30,000. "pay_darf_if_profit" means user must issue DARF when monthly crypto profit exceeds BRL 15,000.
  - monthly_brl_trade_exemption: number in BRL - exchanges with domestic_exchange regime currently have BRL 35,000 monthly exemption. Offshore exchanges have 0.
  - Reference: https://bitsark.com/exchanges
- Usage caveat: use the API as informational market/regulatory data, not as tax, legal, investment, or financial advice. For critical decisions, verify with the official exchange and applicable regulation.

### DolarMap
- URL: https://bitsark.com/dolarmap
- Description: Live BRL/USD exchange rate tracker. Android app available on Play Store.

## Tax guidance summary (Brazil, 2025/2026)
- Exchanges reporting IN 1888 monthly (user has no additional obligation): Mercado Bitcoin, Foxbit, NovaDAX, BityPreço, Brasil Bitcoin, Coinext, Nubank Cripto, Mercado Pago Cripto, Mynt, Bipa
- Exchanges reporting IN 1888 monthly (foreign origin, fully nationalized): Bybit, OKX, Coinbase, Crypto.com, Kraken, Bitso
- Offshore exchanges reporting annually via DeC (user still must file DARF): Binance
- Offshore exchanges with no RFB reporting (user must report and file DARF): KuCoin, MEXC, Bitget, HTX, Gate.io, BingX, BitMart