SealBind
Offline-verifiable licensing

License & activation API for indie developers.

Issue licenses, bind devices, and verify offline with signed Ed25519 tokens. No heavyweight platform, no per-seat surprises — just a clean API that ships with your software.

Start freeSee how it works
SealBind mascot — a seal holding a key with a verified badge

How it works

1

Issue a license

Create a license for a customer via the API. Node-locked to a device limit you set per plan.

2

Bind the device

The customer's software activates against a license and binds to its machine fingerprint.

3

Verify offline

SealBind signs a short-TTL Ed25519 token. Your software verifies it offline against the account's public key — no callback required.

Simple pricing

Start free. Upgrade when your license volume grows.

Hobby

£0forever

  • 1 product
  • 100 active licenses
  • Offline verification
  • Community support
Start free

Indie

£5/mo

  • 3 products
  • 500 active licenses
  • Webhooks
  • Email support
Choose Indie

Studio

£19/mo

  • 10 products
  • 5,000 active licenses
  • Priority support
  • Usage analytics
Choose Studio

Publisher

£49/mo

  • 30 products
  • 25,000 active licenses
  • Priority support
  • Usage analytics
Choose Publisher

GBP prices include applicable taxes. Save two months with annual billing.