Grant application - Zcash SeedSigner, a DIY open source air gapped signer for shielded ZEC (resubmission)

Community Grants
1

Hi everyone, I am resubmission of the Zcash SeedSigner proposal, after the discussion in the minutes thread: Grant Application - Zcash SeedSigner: DIY open source air gapped signer for shielded ZEC · Issue #429 · ZcashCommunityGrants/zcashcommunitygrants · GitHub

Previous application (declined 9/14): Grant Application - Zcash SeedSigner: DIY open source air gapped signer for shielded ZEC · Issue #411 · ZcashCommunityGrants/zcashcommunitygrants · GitHub
Committee discussion and my replies: Zcash Community Grants Meeting Minutes 9/14/2026 - #3 by AngelCastilloB

What changed:

  • 30,000 USD instead of 65,000.
  • No dependency on ZODL. Interop means “works with released Zodl builds over the transport Zodl already ships”, that is the milestone 2 acceptance test, and any wallet side change is out of scope.
  • The custody model is spelled out with the trade offs of each side.
  • Shielded assets are named explicitly in the signing and clear signing milestones.

Happy to answer any questions here :folded_hands:

Zcash Community Grants (ZCG) Meeting Minutes 9/28/2026
2

Thanks for taking the time to apply. The committee has considered your proposal and decided not to fund it. We’re grateful for your interest and hope you’ll continue to contribute to Zcash going forward. Meeting minutes.