Trackday Marshal
Sign anything. Prove everything. Keep your keys.
Marshal is the cryptographic companion to your Trackday account. Sign documents, verify your identity, and prove provenance with hardware-backed keys that never leave your device.
Did someone send you a document?
You were sent something to review and sign
If you arrived here from an SMS link, the sender used Marshal to send you a document to review and sign. Marshal is coming soon to iOS and Android, and you will be able to open it and sign in under a minute.
Three taps
How Marshal works
Verify your phone
A 6-digit SMS code is all Marshal needs to start. No passwords, no sign-up forms.
Read the document
Continuous scroll, with a hash badge at the top so you know the file has not been tampered with.
Sign with Face ID
One biometric tap. Your private key stays in your device's secure enclave forever.
What makes Marshal different
Trust that does not depend on trusting us
Your keys never leave your device
Apple Secure Enclave on iOS, Google StrongBox on Android. Trackday holds the public half only. We cannot sign documents on your behalf.
No document plaintext on our servers
Documents are encrypted on-device. We hold ciphertext only, on a 7-day relay (30 days for premium), then it is gone.
Hash-chained, Bitcoin-anchored proof
Every Marshal signature can be replayed in order. The chain is anchored daily to the Bitcoin blockchain via OpenTimestamps for permanent proof of existence.
Sovereign Australian infrastructure
Your data lives on Australian-resident servers. The key infrastructure is operated by Trackday itself. No overseas key custody.
Coming soon
Hold your own keys
Marshal is on its way to iOS and Android. Sign your first document in under a minute.