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Recover transparent receive and spend history through PIR - #42

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tzarebczan merged 42 commits into
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codex/transparent-address-pir
Oct 15, 2026
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tzarebczan merged 42 commits into
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codex/transparent-address-pir

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@tzarebczan

@tzarebczan tzarebczan commented Oct 14, 2026 •

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Adds Transparent v12 PIR recovery of confirmed transparent receives and spends, including receive-then-spend history with a zero current balance. Browser and native callers use the pinned Rust acquisition client and canonical wallet database. Existing sync and selected-transaction Enhance retrieval remain separate.

Fresh exact-source consent authorizes recovery. Bounded passes resume from durable checkpoints without address lookup or provider substitution. Cold restart regenerates query entropy and retains owed cover work. A history reset replays the canonical projection without erasing that privacy state. Recovered amounts exclude unrelated ordinary outputs, while independently verified funding keeps its spendability and survives PIR retirement. PIR cannot overwrite existing mining or coinbase metadata. Older unsafe projection state requires an explicit rescan; pending payments and output reservations block that reset before mutation.

The publisher remains trusted for correct, complete confirmed history. This capability does not qualify transparent spending or mempool coverage. Native source-bound generic payment methods remain blocked, and source-authorized Mainnet preparation selects shielded pools.

Signed SDK e4e981a stages checkpoint projection until the durable storage key and owned acknowledgment. Known pre-save cancellation preserves independent wallet work; unknown storage failures retire the captured session and reject its queued mutations. A resumed pass can supply an exact borrowed witness for a validated historical rewind point missing below the wallet birthday. Existing canonical conflicts, owner lineage, cancellation and funding checks remain enforced.

Current-source validation passes: 610 focused SDK tests, typecheck, 205 Web Rust tests with three existing ignores, fresh ST/MT WASM builds, all 2,278 web UI tests and the release check. Independent Cursor Agent grok-4.7-xhigh-fast Rust and storage reviews found no actionable issues. Final browser checks passed: 24 production-worker checkpoint races, 12 history/service-recovery cases, four budget cases, 12 cancellation phases and four genuine legacy-checkpoint rescan cases. The main matrix preserves an original report-only metadata failure and qualifies its successful cases through a separately checked 4+8 composition; it does not relabel that driver exit as success.

Fresh final desktop/web public-service wallet checks remain the merge/release gates. No real funds were used. Transparent spending, Mainnet-send release, macOS, Windows, ARM64, physical Safari and mobile remain unqualified.

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tzarebczan marked this pull request as ready for review October 14, 2026 16:06
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📝 Code Review ✅ Completed 2026-10-15T06:58:55.871393Z e4e981a New commits
🔒 Security Review ✅ Completed 2026-10-14T16:13:10.753646Z 5ada137 Draft marked ready
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Comment thread crates/z-engine/src/web/store.rs
Comment thread crates/z-engine/src/native/wallet/transparent_pir.rs Outdated

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Comment thread packages/sdk/src/wasm-client-sync.ts Outdated
Carry a borrowed full-scope and held-checkpoint witness into canonical wallet owners while retaining the ordinary JSON and known-hash refusal boundaries. Keep checkpoint failure handling inside the mutation phase, preserving only certified own pre-key cancellation and retiring uncertain sessions before queued writes.

Validation: 13 focused Rust tests, 3 compile-fail docs, 610 SDK tests, typecheck, native without PIR, wrapper check, and formatting. Fresh WASM/runtime and formal review remain subsequent gates.
@tzarebczan
tzarebczan merged commit 523a3ee into main Oct 15, 2026
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@tzarebczan
tzarebczan deleted the codex/transparent-address-pir branch October 15, 2026 09:23
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