Step 1 · Verify the existing entitlement
Verify license & choose seats
HashMo verifies the license against the OSC entitlement service. Your raw license key is used only for this verification request and is never placed in the checkout URL.
OSC Pro · Large Organization expansion
Add seats to your existing organization. Keep the same lifetime entitlement.
Additional Large Organization Seats cost $19.99 USD each and require an existing OSC Pro 250-seat Large Organization license. Verify the base entitlement first, choose the number of seats, then continue to the authorized checkout.
250-seat base required$19.99 per added seatPerpetual seat rightsNo standalone add-on licenses
How the expansion is protected
Gumroad handles payment. HashMo remains the licensing authority. Buying the add-on alone never creates a standalone OSC Pro license.
1 · Verify
Confirm the 250-seat base license
The license service checks the key against the canonical entitlement database without exposing purchaser information or using the organization name as proof.
2 · Authorize
Bind this checkout to the exact expansion
A short-lived authorization binds the verified base purchase to the requested quantity. The raw license key is not carried into Gumroad.
3 · Pay
Complete Additional Large Organization Seats checkout
The checkout quantity equals the number of additional seats. One quantity is one $19.99 USD seat.
4 · Fulfill
Verify payment again before issuing seats
HashMo checks the seller-authorized sale and authorization again, then appends exactly the paid number of seat entitlements once—even if a payment webhook retries.