Connect verified attributes to accounts, business rules and error recovery.
The happy path is, regrettably, only one of the paths.Subtotal€16,000
THE COST ICEBERG
What’s below the surface?
Explore the layers. Change the numbers. Find your project’s size.
Initial build€75,200752 team hours
Monthly running€10,60096 team hours + fixed costs
Your 3-year estimate€456,80011 included cost items
DIVE INTO THE DETAILS1/4 explored
LAYER 02 / 04
3 itemsIntegration & testing
“Works on my wallet” is just the start.
Test wallets, credentials, devices and browsers — including the unhappy paths.
Works on my wallet™ is not a test strategy.Subtotal€12,000
Design handoffs, timeouts, cancellation and accessible fallback journeys.
A spinning wheel is not a customer support strategy.Subtotal€6,400
This layer €34,400
About the example ranges
Guides are illustrative: 50–150% of each example budget, rounded outwards. Verifier build effort spans 0–240 hours. They are starting points, not market benchmarks or quotes. Custom costs have no preset range.
One organisation, an existing app and one wallet journey. Total = build hours × hourly rate + months × (monthly hours × rate + fixed costs). Use-case examples adjust effort; fixed costs stay unchanged. Excluded items count as zero.