Align delegation circuit with ZIP spec (dom, value=1, remove is_real)#9
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Three changes to align with zcash/zips#1199: 1. Governance nullifier → alternate nullifier with explicit dom public input (14th instance field). dom = Poseidon("governance authorization", vote_round_id) derived out-of-circuit. In-circuit: Poseidon(nk, dom, real_nf) with ConstantLength<3>. 2. Dummy signed note value 0 → 1 to match PCZT construction. 3. Replace is_note_real with v * (root - anchor) = 0 (Orchard standard dummy note mechanism). Remove condition 15.
This was referenced Mar 23, 2026
greg0x
approved these changes
Mar 24, 2026
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Summary
Three changes to align with zcash/zips#1199 review:
dompublic input (14th instance field).dom = Poseidon("governance authorization", vote_round_id)derived out-of-circuit. In-circuit:Poseidon(nk, dom, real_nf)withConstantLength<3>.0 → 1to match PCZT construction (ZIP §Dummy Signed Note).is_note_realwithv * (root - anchor) = 0— Orchard's standard dummy note mechanism (ZIP §Note Padding). Removes condition 15.Merge order
This PR has no dependencies. Merge first — librustvoting and vote-sdk PRs depend on these changes.