CertiEarn

Instant certified Gumroad earnings reports to unlock rent loans fast

Score: 7.7/10IndiaEasy BuildReady to Spawn
Brand Colors

The Opportunity

Problem

University students selling courses on Gumroad experience delayed payouts that disrupt timely rent payments and erode their motivation to continue creating content.

Solution

Securely receive Gumroad sales via webhook and generate verifiable PDF earnings certificates with charts and digital signatures. Share directly with banks, landlords, or lenders for quick cash advances or rent deferrals. Track shared report views and follow up automatically.

Target Audience

University students in the creator economy selling online courses via Gumroad

Differentiator

Blockchain-style verifiable reports linked to live sales data, trusted by student finance partners

Brand Voice

professional

Features

Webhook Sales Capture

must-have8h

Real-time ingestion of Gumroad sales data

Earnings Dashboard

must-have10h

Aggregate revenue views by period/product

PDF Certificate Generator

must-have15h

One-click creation of professional earnings reports

Digital Signature

must-have12h

Embed verifiable hash linking to sales data

Share & Track Links

must-have10h

Secure shareable links with view analytics

Template Library

nice-to-have8h

Customizable templates for banks/landlords

Lender Matching

nice-to-have12h

Recommend student-friendly advance providers

Report History

nice-to-have6h

Archive and re-share past certificates

Total Build Time: 81 hours

Database Schema

users

ColumnTypeNullable
iduuidNo
emailtextNo
webhook_secrettextNo
created_attimestampNo

Relationships:

  • one-to-many with sales, reports

sales

ColumnTypeNullable
iduuidNo
user_iduuidNo
gumroad_idtextNo
amountintNo
timestamptimestampNo

Relationships:

  • foreign key user_id -> users(id)

reports

ColumnTypeNullable
iduuidNo
user_iduuidNo
titletextNo
period_starttimestampNo
period_endtimestampNo
share_urltextYes
viewsintNo

Relationships:

  • foreign key user_id -> users(id)

API Endpoints

POST
/api/webhook/sales

Process incoming Gumroad sales

POST
/api/reports

Generate new earnings report

🔒 Auth Required
GET
/api/reports/:id/share

Public report viewer with tracking

GET
/api/dashboard

User sales and reports overview

🔒 Auth Required

Tech Stack

Frontend
Next.js 14 + Tailwind CSS + shadcn/ui
Backend
Next.js API routes
Database
Supabase Postgres
Auth
Supabase Auth
Payments
Stripe
Hosting
Vercel
Additional Tools
pdf-lib (PDF gen)Resend (emails)Crypto-js (signatures)

Build Timeline

Week 1: Foundation

18h
  • Auth/DB setup
  • Webhook receiver
  • User dashboard

Week 2: Sales & Reports

22h
  • Sales storage
  • Basic PDF generation
  • Report CRUD

Week 3: Sharing & Tracking

20h
  • Share links
  • View analytics
  • Digital sigs

Week 4: Polish

15h
  • Templates
  • Onboarding
  • Testing/deploy
Total Timeline: 4 weeks • 95 hours

Pricing Tiers

Free

$0/mo

No sharing

  • Basic sales tracking
  • 1 report/mo

Starter

$9/mo
  • Unlimited reports
  • Share links
  • Basic templates

Pro

$29/mo
  • All + lender matching
  • Custom templates
  • Priority PDF renders
  • API

Revenue Projections

MonthUsersConversionMRRARR
Month 1803%$50$600
Month 66005%$450$5,400

Unit Economics

$20
CAC
$220
LTV
7%
Churn
90%
Margin
LTV:CAC Ratio: 11.0xExcellent!

Landing Page Copy

Certified Earnings Proof for Gumroad Creators

Generate shareable reports backed by real sales data to secure rent loans or deferrals instantly.

Feature Highlights

Real-time sales verification
Professional PDFs
Trackable shares
Landlord/bank templates
Digital signatures

Social Proof (Placeholders)

"'Landlord approved deferral in 1 day!' - Mike, Bio student"
"'Got $300 advance easily.' - Emma, Marketing creator"

First Three Customers

Run Twitter poll in student creator threads asking about payout pains, follow up with beta invites. Email top 50 Gumroad student sellers (found via search), offer free Pro for testimonials. Validate with 5-minute demo calls.

Launch Channels

Product Huntr/gumroadr/studententrepreneurTwitter #creatorEconomyHacker News

SEO Keywords

gumroad earnings certificateverify gumroad sales for loangumroad proof of income pdfstudent creator revenue report

Competitive Analysis

Gumroad Reports

gumroad.com
Free
Strength

Official data

Weakness

No formatted certs or sharing

Our Advantage

Verifiable, beautiful PDFs optimized for lenders

🏰 Moat Strategy

Network effects from lender partnerships validating reports

⏰ Why Now?

Student loan apps like Upstart accepting digital proofs; Gumroad user base doubling yearly

Risks & Mitigation

legallow severity

Report misrepresentation

Mitigation

Digital hashes + disclaimers

technicallow severity

PDF generation scale

Mitigation

Serverless functions

Validation Roadmap

pre-build5 days

Survey landlords/banks on proof needs

Success: 70% accept digital reports

mvp10 days

Manual PDF gen for 15 users

Success: 3 successful loan/deferrals

Pivot Options

  • General SaaS earnings certs
  • Tax report generator
  • Affiliate lender lead gen

Quick Stats

Build Time
95h
Target MRR (6 mo)
$3,000
Market Size
$20.0M
Features
8
Database Tables
3
API Endpoints
4