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feat(dpp)!: rebalance the shielded fee constants for protocol 14 - #4467
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The flat shielded fee's components were not independently sufficient: the formula reserved 100M credits for Halo 2 proof verification and 22M/action for per-action compute, but allotted only 344 bytes/action (9.43M credits) of storage while the GROVE_V4 fixed per-append model meters a 1-action transfer at 17.88M credits (14.34M storage = 523 bytes: the declared payload plus Merk framing, dense path records and the amortized chunk framing) — so the compute budget silently subsidized database work. Protocol 14 (DriveAbciValidationConstants v10, protocol-14-only): - `shielded_proof_verification_fee` 100M -> 40M: ~5 ms of Halo 2 at the fee model's ~8M credits/ms, ~27x a BLS signature verification — reserved for compute alone. - new table field `shielded_storage_bytes_per_action`, 344 (the declared payload, locked) in v1..v9 and 550 at v10, sized to the measured footprint with headroom, so the storage component alone covers the database work. - `compute_minimum_shielded_fee_v0` reads the allowance from the table; no method version bump — the logic is unchanged and released versions carry the shipped value byte-for-byte. Net flat fees at protocol 14 (2 actions): transfer 162.85M -> 114.14M (-30%), unshield -> 120.22M, withdrawal -> 226.48M. Protocol 13 fees are untouched. The mainnet-halt-repro test pins itself to protocol 13, whose fee constants its measured funding band belongs to. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Path: .coderabbit.yaml Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (3)
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Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughChangesShielded fee versioning
Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk:⚪ Minimal · up to This PR adjusts shielded fee components for protocol 14 while preserving earlier protocol behavior; no actionable merge-blocking risk remains beyond normal checks and review. Suggested reviewers: 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In
`@packages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v10.rs`:
- Around line 342-345: Update the calibration comment immediately above
shielded_per_action_processing_fee to reference the current 40M
shielded_proof_verification_fee instead of 100M, preserving the existing
explanation of the relative verification and base costs.
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packages/rs-dpp/src/shielded/compute_minimum_shielded_fee/v0/mod.rspackages/rs-dpp/src/shielded/mod.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/shield/tests.rspackages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/shielded_transfer/tests.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/mod.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v1.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v10.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v2.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v3.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v4.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v5.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v6.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v7.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v8.rspackages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v9.rspackages/rs-platform-wallet-ffi/src/shielded_send.rs
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- packages/rs-dpp/src/shielded/mod.rs
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Final validation — Codex/Sol only (Phase 2 disabled)
The protocol-14 rebalance is internally consistent and preserves the intended values in released version tables, but three in-scope follow-ups remain: the mobile estimator ignores the active SDK protocol, historical v12/v13 fees lack an independent golden, and the v10 calibration comment contradicts the new constants. None is a consensus blocker, so this review comments rather than requests changes.
Source: reviewer backend model gpt-5.6-sol (general, security-auditor, rust-quality, and ffi-engineer); final verifier backend model gpt-5.6-sol. Orchestration-only and not reviewer evidence: openclaw-agent/cliproxy/gpt-5.6-sol.
Validated zero-blocker Codex/Sol precheck evidence was promoted to final because Phase 2 (Sonnet/Opus) is temporarily disabled. This is Codex/Sol-only final validation, not Codex + Sonnet/Opus coverage.
Review provenance
- Codex reviewers:
gpt-5.6-sol— general (completed),gpt-5.6-sol— security-auditor (completed),gpt-5.6-sol— rust-quality (completed),gpt-5.6-sol— ffi-engineer (completed) - Verifier:
gpt-5.6-sol— verifier - Sonnet/Opus: not run (Phase 2 disabled — temporary Codex/Sol-only final)
- Secondary pass: disabled (
temporary_phase2_sonnet_disable)
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In `packages/rs-platform-wallet-ffi/src/shielded_send.rs`:
- [SUGGESTION] packages/rs-platform-wallet-ffi/src/shielded_send.rs:1657-1667: Versionless FFI estimator now reports protocol 14 fees on protocol 13 networks
These updated goldens confirm that the exported estimator now returns protocol 14's fees, but `platform_wallet_shielded_estimate_fee` selects `PlatformVersion::latest()` at line 193 and accepts neither a manager handle nor a protocol version. The Swift and JNI APIs expose the same versionless calculation, while the actual shielded builders calculate fees with the manager's network-tracked `sdk.version()`. While a network remains on protocol 13—as mainnet does before the unreleased protocol 14 activates—the preview therefore reports 114,140,000 credits for a two-action transfer while the builder and consensus use 162,851,200. Pass the active protocol version or manager/SDK handle through the mobile bindings and add protocol-13 and protocol-14 boundary tests.
In `packages/rs-dpp/src/shielded/compute_minimum_shielded_fee/v0/mod.rs`:
- [SUGGESTION] packages/rs-dpp/src/shielded/compute_minimum_shielded_fee/v0/mod.rs:263-298: Pin the released protocol fee instead of testing only the latest table
This test uses only `PlatformVersion::latest()` and derives its expected result from the same new `shielded_storage_bytes_per_action` field used by the implementation. It therefore verifies the formula's algebra but would still pass if a released table were accidentally assigned protocol 14's 550-byte allowance. Because this PR modifies every historical initializer and promises byte-identical protocol-12/13 behavior, add an independent boundary golden for the released 162,851,200-credit fee as well as protocol 14's 114,140,000-credit fee.
In `packages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v10.rs`:
- [SUGGESTION] packages/rs-platform-version/src/version/drive_abci_versions/drive_abci_validation_versions/v10.rs:342-345: Update the stale 100M per-action calibration rationale
The protocol-14 table now sets the bundle proof fee to 40M credits, but this comment still says it is 100M and approximately 4.5 times the 22M per-action charge. The actual ratio is about 1.82, so both the stated ratio and the claim of a uniform calibration rate are false. Rewrite the rationale rather than merely replacing `100M` with `40M`, so future fee changes are not based on a superseded relationship.
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Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@## v4.2-dev #4467 +/- ##
============================================
- Coverage 87.39% 86.85% -0.55%
============================================
Files 2735 2735 Lines 347672 349467 +1795 ============================================
- Hits 303855 303521 -334 - Misses 43817 45946 +2129
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…on fee goldens The mainnet-halt-repro's hardcoded mid-band headroom went stale the moment the protocol-14 constants moved (and parts of execution resolve constants through the platform state's version rather than the passed one, so the pv-13 run shifted too). The test now binary-searches the protocol-13 funding band at runtime — least headroom validation lets through (successful or dropped both count as through; below the band the rejections are the structural-minimum gate, then AddressesNotEnoughFunds), least headroom that executes — asserts the band is still open, and drops a shield funded at the midpoint. Measured here: [98,296,560, 117,215,720), the same 18.9M width as the historical measurement. Also per review: an independent cross-version golden (protocols 12/13 must keep the shipped 162,851,200 two-action fee byte-for-byte, protocol 14 must price it at exactly 114,140,000 — hardcoded so a released table accidentally given the new allowance cannot pass), and the protocol-14 per-action fee comment no longer claims a shared calibration rate with the rebalanced 40M bundle fee. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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QuantumExplorer added a commit
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Aug 24, 2026
With the protocol-14 rebalance (#4467) in, the fee floors tighten from "the whole flat fee covers the metered cost" to component independence: the per-action storage allowance alone must cover the amortized real storage per append, and the per-action processing fee alone must cover the amortized metered GroveDB processing — the proof-verification fee is reserved for Halo 2 CPU and takes part in no database assertion. At the current constants and pin: 15.07M >= 14.34M storage and 22M >= 3.55M processing, with the compute budget untouched. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
QuantumExplorer added a commit
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Aug 24, 2026
…edicate The single-edge probe binary-searched on NotEnoughFunds, but below the band the rejection class varies with whichever gate fires (input minimum, structural fee minimum, metered affordability), so the search could converge on a class boundary instead of the admission threshold — under the protocol-14 rebalance it collapsed to headroom 1. Search on Success (monotone across the whole range) and assert the point one credit below is a validation rejection rather than the InternalError drop — the mid-band outcome — which certifies the band is empty. Measured at the rebalanced constants: least executing headroom 119,978,640 (exactly 60M below the pre-#4467 figure — the proof-fee cut), just below is a clean AddressesNotEnoughFunds; 75 s. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
bfoss765 added a commit
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Aug 24, 2026
Reconciles the branch with the protocol-14 shielded fee rebalance (#4467) and the broadcast-outcome extraction (#4451). The one textual conflict was packages/rs-dpp/src/shielded/mod.rs: this branch adds the wire-cost model (SHIELDED_ACTION_WIRE_BYTES, SHIELDED_PROOF_WIRE_BYTES_PER_ACTION, envelope helpers) in the same region where #4467 deletes SHIELDED_STORAGE_BYTES_PER_ACTION (replaced by the versioned event constant `shielded_storage_bytes_per_action` beside the compute fees). Resolution keeps both changes: the wire-cost block stays, the storage constant goes. No other reference to the deleted constant existed on this branch. No fee numbers needed recalibrating: the output-aware predictor (ShieldedFeeKind::compute / select_notes_with_fee) reads exclusively through dpp's compute_* fee functions, which #4467 rewired to the versioned constants, and every test on this branch derives its expectations from compute_minimum_shielded_fee(n, version) rather than hardcoding magnitudes - including the strict-change exact-fit boundary test and the u64::MAX overflow boundary test, whose inputs are expressed relative to fee_2/fee_3 and rescale automatically. The FFI fee-estimate goldens carry upstream's v14 values (114,140,000 / 120,222,800 / 226,480,000 = 40M proof + n x 22M processing + n x 550B x 27,400/B + flat extras), which merged cleanly. Verified: cargo check -p platform-wallet -p platform-wallet-ffi -p rs-unified-sdk-jni clean; 158 wallet::shielded platform-wallet tests, 233 dpp shielded tests, 16 platform-wallet-ffi shielded_send tests all pass. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
QuantumExplorer added a commit
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Aug 24, 2026
…protocol version platform_wallet_shielded_estimate_fee pinned PlatformVersion::latest(), so once a client ships the protocol-14 fee rebalance its fee preview under-quotes any network still running protocol 13 (114.14M vs the 162.85M credits the consensus gate actually validates for a 2-action transfer) — while the shielded builders correctly carve fees at the manager's network-tracked sdk.version(). Take the manager handle and resolve the version through the manager's SDK, exactly like the builders do. An unknown handle is a hard ErrorInvalidHandle — a versionless fallback would silently mis-quote. Thread the handle through the Swift binding (estimateShieldedFee becomes an instance method), the JNI export, and the Kotlin wrapper (moved from the process-global ShieldedProver onto PlatformWalletManager, matching the other manager-handle entry points), and update both example apps' send/fund screens. Pin the estimator's formula table on both sides of the boundary: protocol 13 (162,851,200 / 168,934,000 / 275,191,200 credits at 2 actions) and protocol 14 (114,140,000 / 120,222,800 / 226,480,000). Raised by review on #4467; stacks on feat/shielded-fee-rebalance. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
This was referenced Aug 24, 2026
bfoss765 added a commit
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Aug 25, 2026
Brings the branch up to date with upstream after #4457, #4465, #4399, #4467, #4257, #4382, #4423, #4463, #4377, #4440, #4472, #4477, #4470, and #4469 landed on v4.2-dev (base tip 1e26927). One conflict, in packages/kotlin-sdk/.../dashsdk/wallet/ManagedCoreWallet.kt: upstream #4377 inserts a new setGapLimit() immediately above broadcastTransaction(), while this branch rewrites that same broadcastTransaction() — expanding its KDoc to document the age-guard refusal and wrapping the body in mapNativeErrors { } so the native stale-broadcast error (code 34) surfaces typed. The two edits are additive and independent, so resolved as the union: setGapLimit() kept verbatim from upstream, broadcastTransaction() kept verbatim from this branch. Three more files overlapped but auto-merged, and were verified rather than assumed: - changeset/core_bridge.rs: this branch factors the input walk into spent_outpoint()/spent_outpoints() so the in-broadcast fence and the persister's spent-set cannot disagree about which inputs count; upstream #4257 replaces the synthetic ScriptBuf::default() with the input's real locking script. Orthogonal — #4257 changes the Utxo payload, the fence's filter predicate is unchanged. Both sides' tests pass, including #4257's two new script-reconstruction tests running through this branch's refactored walk. - manager/mod.rs: upstream adds the tracked_masternodes field and its initializer; this branch's SpendObservationHandler registration and its cfg(any(test, feature = "shielded")) widening are untouched. - rs-platform-wallet-ffi/src/error.rs: upstream adds ErrorMasternodeListUnavailable = 46; this branch maps PlatformWalletError::StaleReservation onto the existing shared code 34. No discriminant or name collides. Upstream's three new PlatformWalletPersistence methods all carry default bodies, so this branch's NoopTestPersister needs no change. Verified: the merged tree is identical to origin/v4.2-dev except in exactly the 18 files this branch owns, and this branch's net delta against the new base is unchanged at +3457/-103. cargo test -p platform-wallet --lib: 784 passed, 0 failed. cargo test -p platform-wallet-ffi --lib: 278 passed, 0 failed. cargo fmt --check and cargo clippy --all-targets -D warnings: clean on both crates.
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Issue being fixed or feature implemented
The flat shielded fee's components are not independently sufficient.
compute_minimum_shielded_feereserves 100M credits for Halo 2 proof verification and 22M/action for per-action compute, but allots only 344 bytes/action (9.43M credits) of storage — while the GROVE_V4 fixed per-append model (grovedb #828–#830) meters a 1-action transfer at 17,882,707 credits, 14,337,000 of it storage (= 523 bytes at the full 27,400 credits/byte rate: the declared 344-byte payload plus Merk framing, dense path records and the amortized chunk framing). The compute budget silently subsidizes database work — the fee-floor blocker raised on #4382.What was done?
Protocol 14 only (
DriveAbciValidationConstantsv10 is protocol-14-only; protocol ≤13 values are locked and byte-identical):shielded_proof_verification_fee100M → 40M — ~5 ms of Halo 2 at the fee model's ~8M credits/ms of CPU (~27× a BLS signature verification), reserved for compute alone.shielded_storage_bytes_per_action— 344 (the declared physical payload) locked in v1–v9, 550 at v10: the measured GROVE_V4 footprint with headroom, so the storage component alone pays for the database work.compute_minimum_shielded_fee_v0reads the allowance from the table (the bareSHIELDED_STORAGE_BYTES_PER_ACTIONconst is retired); no method version bump — logic unchanged, released versions replay byte-for-byte.Net flat fees at protocol 14 (2 actions): transfer 162.85M → 114.14M (−30%), unshield → 120.22M, withdrawal → 226.48M.
Sequencing
Lands before#4382 (the grovedb pin bump). #4382 then rebases onto this and strengthens its fee-floor tests to assert the compute and database components independently against the measured fixed per-append cost — closing the blocker thread there with these constants.
Breaking Changes
Protocol 14 shielded fees change (protocol 14 is unreleased). Protocol ≤13 is byte-for-byte untouched.
Checklist:
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Summary by CodeRabbit
Enhancements
Bug Fixes
Tests