BlindPay

BlindPay is an API-first payment infrastructure company that enables businesses to send and receive money globally by routing transactions through stablecoins and connecting to local payment rails in a single integration. Founded in May 2024 and headquartered in San Francisco, the company was part of Y Combinator's Winter 2025 batch and raised a $3.3 million seed round in August 2025 led by Jawed Karim, co-founder of YouTube. Additional investors include 468 Capital, Acacia Venture Capital Partners, and Transpose Platform.

Core Infrastructure

BlindPay's platform unifies four payment operations through one API: storing stablecoins in managed or external wallets, receiving funds via bank transfer or on-ramp (fiat converted to stablecoin), sending payouts to bank accounts or off-ramp (stablecoin converted to fiat), and transferring stablecoins across blockchains. Every transaction, whether it originates as fiat or as a stablecoin, settles through stablecoins internally before being delivered in the recipient's preferred form.

The platform supports traditional payment rails including ACH, wire transfers, SWIFT, and Brazil's Pix instant payment network, alongside regional rails for Mexico (SPEI), Colombia (PSE), and Argentina's local transfer systems. On the blockchain side, BlindPay supports EVM-compatible chains as well as Solana and Stellar, giving developers a consistent API surface regardless of which network their application uses.

The architecture is non-custodial: funds remain under the control of the originating wallet or account throughout the transaction, and the platform automatically returns funds on failed transactions without requiring manual intervention.

Developer Experience

BlindPay is built explicitly for developer integration. The API uses bearer token authentication and follows a quote-lock-execute model: a quote is generated that locks the exchange rate and fees for a fixed window (five minutes for on-ramp and off-ramp transactions, fifteen seconds for cross-chain transfers), the user or application authorizes the payment, and the transaction is submitted before the quote expires. This design provides predictable costs and eliminates slippage risk during execution.

The company maintains official SDKs in six languages — Node.js, Swift, Go, Python, PHP, and Rust — all published under MIT licenses on GitHub at github.com/blindpaylabs. Beyond traditional SDKs, BlindPay has also released a CLI tool, a Model Context Protocol (MCP) server for AI agent integration, and a set of packaged Agent Skills, reflecting a deliberate strategy to be compatible with AI-driven payment automation workflows. The MCP server enables large language model applications to trigger payment flows directly through standardized tool calls.

Sandbox and production environments are fully separated. Development instances use test tokens and testnets (including Base Sepolia, Arbitrum Sepolia, and Polygon Amoy for EVM development), and complete transactions automatically within seconds for rapid iteration. Production deployments use webhooks to notify applications of payment lifecycle events such as payout.complete.

Compliance Layer

BlindPay handles the compliance and verification layer on behalf of its API customers. Businesses integrate identity collection into their own products, while BlindPay performs the actual KYC and KYB verification. The company integrated AiPrise for automated onboarding, which automated approximately 90% of verification checks and reduced individual identity verification time from eight minutes to under twenty seconds.

This approach allows fintech developers and businesses operating in multiple jurisdictions to outsource regulatory complexity without maintaining separate compliance operations for each country.

Market Focus and Traction

BlindPay's strongest initial market is Latin America, a region where cross-border payments have historically been expensive and slow. Traditional correspondent banking in the corridor charges 1.5 to 6 percent per transaction with two- to five-day settlement windows. BlindPay claims its infrastructure reduces both cost and transaction time by up to 80 percent.

A key supply-side partnership with Bitso, Latin America's largest cryptocurrency exchange with more than 8 million users and 1,700 institutional clients, provides BlindPay with local currency liquidity and connectivity to regional payment rails through the Bitso Business API. This partnership allows BlindPay to offer Pix payouts in Brazil and SPEI payouts in Mexico without needing to establish direct banking relationships in each country independently.

The company launched commercially in July 2024. By the end of its first month it processed $30,000 in payment volume. Volume reached $100,000 cumulatively by the second month. Early 2025 saw 19 active customers across gaming, fintech, and decentralized autonomous organizations. By September 2025, BlindPay reached $10 million in monthly processing volume, reporting more than 600 percent transaction volume growth over a two-month span. In November 2025, the platform distributed $175,720.76 in partner fees in a single month. The platform has processed transactions across Latin America, North America, Asia, Africa, and Europe.

Founding Team

The four co-founders bring concentrated experience from Brazilian fintech, where stablecoin-based remittance and payroll products have seen significant adoption ahead of other regions.

Bernardo Simonassi, CEO, has seven years in software and product design, worked with stablecoin payment systems before founding BlindPay, and previously built payment products at PicPay, the Brazilian super-app with more than 60 million users.

Gabriel Lyra, CTO, led software engineering at LendingClub, where he architected financial infrastructure processing $50 billion in monthly loan transactions, and held infrastructure roles at Amazon Web Services.

Joao Borges, COO, founded a major Brazilian blockchain startup that reached seven-digit annual revenue in its first year and was named to the Forbes 30 Under 30 list.

Gustavo Marinho, CPO, spent more than eight years building digital financial products at PicPay, where he led a loans marketplace that grew its portfolio to over $100 million within six months.

Positioning

BlindPay competes in an emerging category of stablecoin payments infrastructure alongside companies such as Bridge (acquired by Stripe for $1.1 billion), BVNK, and Conduit. The company's differentiation centers on a developer-first API experience, deep integration with Latin American local payment rails, and an architecture that treats stablecoins as the internal settlement layer rather than a product in themselves. Blockchain details are abstracted away from end recipients, who interact only with local fiat payment methods.

As of mid-2026, the company's website, developer documentation, and GitHub repositories remain active, with repositories updated within recent months and the platform continuing to process live transactions.