# Frozen Handoff for Independent Human Audit — Vaultfire Solana V3

## Classification and conclusion

- **Prepared:** 2026-08-22 EDT
- **Audit target (immutable starting point):** `42b45865473d4692c8f9221335d94060a4d08948`
- **Isolated branch/worktree:** `audit/final-solana-v3-20260822` at `/home/user/workspace/vaultfire-audit-final-solana-v3-20260822`
- **Remediation commit:** `156c49f6d03324752b98a35258533ce0d77f5c97`
- **Scope:** all 15 Anchor/Rust programs (54 instruction handlers) under `repos/vaultfire-solana/programs`, plus the Solana x402 metadata and verifier boundary.
- **Verdict:** **BLOCKED — not an independent human-audit completion, not deployment-ready, and not authorization to deploy, sign, broadcast, spend, or create keys.**
- **Release gates preserved:** `v3Program.status = not_deployed`; `x402UsdcSettlement.status = configured_unverified`; no mainnet program IDs, deployment evidence, or settlement evidence were added.

This package is a source-only handoff for an independent human auditor. No RPC calls, validator startup, deployment, signing, key generation, broadcast, payment, push, merge, or production modification was performed.

## Reviewed surface and reconciliation

The prior internal baseline `fbedf828be39aaaf5d74aa6cb4085d783d28a683` was compared with the requested target. Commit `b86a3717faf902744f20d99d87c6d69b21bb424d` introduced the prior fail-closed remediation. The following controls remain in the target source:

| Area | Reconciled source result |
| --- | --- |
| Singleton initialization / PDA authority | Each of 15 `initialize` handlers hard-fails with `deployment_authorized = false` and `BootstrapDisabled`; singleton PDAs use fixed seeds. This is a source gate, not deployment evidence. |
| Account typing / signer constraints | Mutable program state uses Anchor `Account<T>` and authority roles use `Signer`; state/PDA relationships are constrained in the high-risk bond and governance paths. |
| Lamports / rent | Accountability stake uses a program-owned initialized `BondVault`, System Program CPI for deposit, checked arithmetic, vault linkage, and a rent-reserve check before direct lamport withdrawal. |
| CPI / arbitrary accounts | No `UncheckedAccount`, `AccountInfo`, `remaining_accounts`, raw `invoke`, or raw `invoke_signed` occurrence was found in the 15 native sources. The only value-moving CPI is the typed System Program transfer in accountability staking. |
| Bridge / attestation | `trust_data_bridge` submission and processing return `AttestationVerificationUnavailable`; `dilithium_attestor` submission returns `VerificationUnavailable`. No unauthenticated claim is persisted on these paths. |
| Governance / disputes | Duplicate signers, threshold range, duplicate signatures, expiry, and max 30-day proposal lifetime are checked. Finalization does not dispatch arbitrary CPI. Slashing is disabled because no adjudication/settlement model exists. |
| Arithmetic | Counters and balance calculations use checked arithmetic. Release profile enables overflow checks. |
| Pause / upgrade / activation | There is no approved upgrade-authority custody, pause procedure, deployment partner, executable mainnet account, or deployed-bytecode proof. Bootstrap remains disabled. |
| x402 / partner boundary | The checked-in PR7 metadata has 29 source-only Solana options, but website discovery has no Solana networks and the source verifier has no call site. This is configuration, not settlement evidence. |

## Final audit findings and remediation

### SV3-FINAL-01 — Medium (remediated): user-controlled PDA seed fields advertised 64 bytes while Solana permits 32 bytes per seed

**Affected handlers:** `belief_attestation_verifier::submit_attestation`, `production_belief_verifier::submit_attestation`, `validation_registry::submit_validation`, and `flourishing_metrics_oracle::submit_metric`.

**Exploit condition:** a caller supplied a UTF-8 value of 33–64 bytes for a field used directly in a PDA seed. The public handler limit allowed the input, but Solana PDA derivation rejects an individual seed over 32 bytes. This yielded an inconsistent, denial-of-service-style interface at the account-constraint boundary.

**Remediation:** commit `156c49f` adds explicit 32-byte constants and handler limits for all four direct string seed values. The regression suite asserts every affected program has the bound. The fix is fail-closed; values that cannot form a valid PDA are no longer accepted by the public handler contract.

**Verification:** `npm run test:readiness` passed **15/15** source-regression tests after the change. This is not a native build or local-validator pass.

### SV3-FINAL-02 — Low (remediated): historical functional transcript could be mistaken for the current fail-closed release

`TEST_RESULTS.md` asserted “48 passing” and “ALL 15 PROGRAMS FULLY FUNCTIONAL” despite predating the current fail-closed source. It now has a prominent historical/superseded notice, and a source regression test enforces that classification.

### SV3-FINAL-03 — Informational (remediated classification): Solana x402 metadata must remain configured but unverified

The checked-in PR7 registry contains 29 `metadata-configured-unverified` Solana payment options while the runtime discovery surface does not advertise a Solana network and the receipt verifier has no source call site. `MAINNET_READINESS.json` now accurately uses `configured_unverified`; it continues to contain an empty `settlementEvidence` array and `payTo: null` for the runtime gate. This is not a settlement claim.

## Unresolved blockers and conditions before activation

1. **No native toolchain validation:** `rustc`, Cargo, Rustup, Solana CLI/test validator, Anchor, AVM, Cargo Audit, and Cargo Deny were absent. No `cargo check`, `cargo test`, `cargo build-sbf`, `anchor build`, `anchor test`, or local-validator result is claimed.
2. **No deterministic SBF artifact evidence:** Anchor/Solana/Rust versions are not source-pinned for a reproducible SBF build; CI uses floating `stable` and installer `stable`. There is no signed build digest or deployed-bytecode comparison.
3. **No deployment/custody evidence:** no mainnet executable accounts, deployment transaction, approved program identifiers, upgrade-authority custody threshold, emergency pause/rollback runbook, or named accountable deployment partner are evidenced.
4. **Bridge and ML-DSA are intentionally unavailable:** a future design requires source-domain allowlists, event/proof verification, domain separation, unique message IDs/nonces, expiry, replay storage, attester key governance/rotation, and adversarial tests before either path can be enabled.
5. **Governance and disputes are intentionally incomplete:** governance only records bounded approvals; it cannot execute a privileged action. Slashing is unavailable. An independently reviewed timelocked dispatcher and dispute/adjudication/settlement specification are required before enabling value-bearing governance.
6. **x402 remains non-operational:** the unused Solana verifier checks a confirmed transaction, recipient, mint, and positive balance delta, but has no source-visible one-time receipt store, request/route binding, nonce, expiry policy, finalized commitment, or settlement reconciliation. Do not activate it without an independently reviewed lifecycle and controlled evidence.
7. **Privacy/data minimization is unresolved:** policy, profile, identity, belief, and attestation strings are stored on-chain in designs that are immutable by default. There is no demonstrated consent, minimization, redaction, encryption, or deletion design. Do not represent these storage paths as private.
8. **Partner activation boundary:** only written approval by a named accountable partner, an independent human report and disposition, reproducible build evidence, deployment/custody evidence, operations acceptance, and the relevant x402 evidence may change the release state.

## Commands and exact outcomes

| Command | Outcome |
| --- | --- |
| `git worktree add -b audit/final-solana-v3-20260822 /home/user/workspace/vaultfire-audit-final-solana-v3-20260822 42b45865473d4692c8f9221335d94060a4d08948` | Exit 0; isolated branch created at requested target. |
| `npm run test:readiness` in `repos/vaultfire-solana` | Final rerun exit 0: 15 tests passed, 0 failed. Earlier two transient source-test runs exited 1 during correction of the new archival-document assertion; they are preserved as logs and are not claimed as passes. |
| Source consistency command (`jq` release gates, 15-program count, mainnet Anchor stanza absence, prohibited native account/CPI pattern scan) | Exit 0. |
| `cargo check --workspace` | Not run: Cargo absent. |
| `anchor test` | Not run: Anchor absent. |
| `solana-test-validator --version` | Not run: Solana test validator absent. |
| `prettier --check` | Not run: standalone Prettier command absent (internal result 127). |

## Toolchain record

| Tool | Version / state |
| --- | --- |
| Node.js | `v20.20.1` |
| npm | `10.8.2` |
| Git | `2.53.0` |
| jq | `1.8.1` |
| rustc / Cargo / Rustup | absent |
| Solana CLI / solana-test-validator | absent |
| Anchor / AVM | absent |
| Cargo Audit / Cargo Deny | absent |

## Modified files in remediation commit `156c49f`

- `repos/vaultfire-solana/programs/belief_attestation_verifier/src/lib.rs`
- `repos/vaultfire-solana/programs/production_belief_verifier/src/lib.rs`
- `repos/vaultfire-solana/programs/validation_registry/src/lib.rs`
- `repos/vaultfire-solana/programs/flourishing_metrics_oracle/src/lib.rs`
- `repos/vaultfire-solana/tests/security-regression.test.mjs`
- `repos/vaultfire-solana/MAINNET_READINESS.json`
- `repos/vaultfire-solana/tests/mainnet-readiness.test.mjs`
- `repos/vaultfire-solana/MAINNET_READINESS.md`
- `repos/vaultfire-solana/TEST_RESULTS.md`

## Frozen source references

- `file:///home/user/workspace/vaultfire-audit-final-solana-v3-20260822/repos/vaultfire-solana/MAINNET_READINESS.json`
- `file:///home/user/workspace/vaultfire-audit-final-solana-v3-20260822/repos/vaultfire-solana/V3_SECURITY_RELEASE.json`
- `file:///home/user/workspace/vaultfire-audit-final-solana-v3-20260822/repos/vaultfire-solana/tests/security-regression.test.mjs`
- `file:///home/user/workspace/vaultfire-audit-final-solana-v3-20260822/repos/theloopbreaker-site/app/api/x402/trust/_lib/verify-solana.ts`
