Men repeatedly fall for scams by fraudulent women because there's no public database sharing identifiers like CPFs to warn others and prevent repeat victims.
High problem clarity and a clear market gap, with strong willingness to pay driven by severe pain. However, legal and data validation challenges make buildability for a solo founder risky.
Strong market viability and a compelling value proposition to prevent significant loss, but legal and data acquisition complexities pose a challenge to feasibility.
Clear and urgent problem with a reachable niche, but significant complexity around legal, data verification, and trust-building aspects for a solo founder.
Strong target audience and value proposition for a significant problem, but high risks related to legal aspects and data integrity need careful validation.
High demand and a clear problem with inadequate current solutions, but legal and data acquisition complexities present significant challenges to a narrow, fast build and scaling.
One-liner
A public CPF blacklist for romantic scammers in Brazil addresses a dire pain, but legal and data verification complexities require careful validation.
The Pain
Men in Brazil are suffering significant financial and emotional losses from romantic scams (pilantras) using CPF numbers, with no centralized, public database to identify and warn others.
The Gap
Existing solutions are either expensive private investigations or B2B KYC tools, and dating app safety features are insufficient. There is no public, centralized CPF blacklist tailored for romantic scam prevention in Brazil.
Build Angle
A community-driven platform allowing users to report and search for CPF numbers of known romantic scammers, with a strong emphasis on evidence-based submissions and robust verification processes, while navigating legal frameworks.
Reasoning
The idea scores highly on pain, gap, and willingness to pay, indicating a strong market need. However, the significant legal and operational complexities around building a public database with sensitive personal identifiers (CPF) in a high-stakes emotional and financial context present substantial risks for a solo builder. It's crucial to thoroughly validate the legal feasibility, user trust requirements, and data verification strategy before committing to a full build. Without clear answers to these complex questions, the project could face insurmountable challenges or legal liabilities. Therefore, extensive validation is a prerequisite for moving forward.
Risks
Competitors (2)- emerging
Wymoo International offers dating background checks and fraud investigations in Brazil.
Pricing: Contact for a free quote.
Didit provides AI-native database validation for CPF verification in Brazil for compliance and fraud prevention.
Pricing: Not publicly available; offers a free core KYC offering and no setup fees.
Pricing Landscape
Existing solutions primarily consist of private investigation services, which typically require direct quotes. CPF verification services for businesses offer free core KYC (Know Your Customer) features, but advanced fraud prevention tools likely involve paid tiers. There is no indication of standardized pricing for a public-facing blacklist. Dating apps themselves offer some safety features, but these are often part of their general service and not a separate, priced offering for scam prevention.
Recent News
Global Dating Insights - February 26 2026
Strengths
Next Steps
PR Newswire - March 25 2026
Didit - March 06 2026
Not specified - April 01 2025
Market Signals
The market for preventing romantic scams in Brazil is growing rapidly, driven by a surge in online dating and an increase in sophisticated fraud tactics. Romance scams alone resulted in over $1.16 billion in losses globally in the first nine months of 2025, with Brazil experiencing a significant rise in dating app-related kidnappings and financial fraud. There is a clear need for more robust safety measures, particularly around identity verification and centralized scammer databases.
User Frustrations