feat(qt): DashPay usernames - #7765
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…ibrary native_rust stages the prebuilt Rust 1.98.1 compiler and Cargo (the toolchain dashpay/platform pins) for the four supported build hosts, patchelf'd with fix-elf-interpreter.sh when run inside a Guix environment. rust_stdlib stages the standard library for the host, for every default Guix host. Linux hosts use the glibc (-unknown-linux-gnu) standard library, the one Rust supports for linking into a glibc program. Its libc imports are unversioned and bind to the glibc the program is linked against; every symbol it requires unconditionally is in glibc 2.31 on all five Linux architectures. contrib/devtools/update-rust-hashes.py refreshes the pins and requires every download to match the .sha256 file static.rust-lang.org publishes; --check compares the pins with those files. Nothing uses the packages yet. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Potential PR merge conflictsThis is advisory only. It does not block CI, but it marks PRs that will likely need a rebase depending on merge order. If this PR merges firstThese open PRs will likely need a rebase:
If these PRs merge firstThis PR will likely need a rebase:
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This was referenced Sep 28, 2026
feat(qt): Dash Platform usernames, profiles, and DashPay contacts in dash-qt
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Included review availability: This review used your included allowance. Your plan provides up to 4 included reviews per hour; 1 remain after this review. WalkthroughAdds optional Dash Platform GUI support to the Qt wallet, including dependency builds, Platform client and wallet APIs, wallet-backed registration flows, and per-wallet DashPay controls. The Platform GUI is disabled by default. Wallet transaction commits now return mempool rejection details, and the Qt send flow reports failed commits instead of continuing as a successful send. Priority: ➖ Normal Estimated code review effort: 5 (Critical) | ~120 minutes Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant CreateUsernameWizard
participant IdentityFlow
participant WalletModel
participant PlatformService
participant PlatformClient
CreateUsernameWizard->>IdentityFlow: start username registration
IdentityFlow->>WalletModel: create and commit asset-lock transaction
IdentityFlow->>PlatformService: request operation-scoped signing
PlatformService->>WalletModel: request wallet unlock and signatures
IdentityFlow->>PlatformClient: build and broadcast transitions
PlatformClient-->>IdentityFlow: deliver build and broadcast results
IdentityFlow-->>CreateUsernameWizard: update registration progress
Merge Risk: 🟡 Moderate · up to Failed sends are now reported and abandoned correctly. Some DashPay registration safeguards remain unconfirmed: blocking a second funded registration, rechecking funding before opt-out, and handling the display name on retry. One documentation inaccuracy also remains unconfirmed. These should be confirmed before merge. Security Architecture ReviewSecurity architecture risk: 🟡 Moderate · up to The normal registration path has checks before spending and signing, but failure handling may not reliably preserve or clear registration progress. In an uncommon rejection or storage-failure case, the wallet could lose track of a funding attempt or resume a flow reported as failed. Retained concerns
Security review detailsSecurity Blast Radius
Security Findings and Attack Paths
Trust Boundaries and Controls
Resilience and Maintainability Implications
Hardening Proposals
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 26.22% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 595 functions across 60 files. (2 skipped: 2 unsupported.)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
Review comments at @doc/platform-gui.md:
- Around line 196-197: Update the Linux Rust standard-library statement in the
platform GUI documentation to say builds use the glibc `-unknown-linux-gnu`
target and that its required libc symbols exist unconditionally in glibc 2.31;
remove the incorrect claim that Linux builds use musl in a glibc binary.
Review comments at @src/qt/platform/createusernamewizard.cpp:
- Line 316: Move the `m_profile` visibility update out of `UsernameEntryPage`’s
constructor and into an `initializePage()` override, declaring it in the class
and implementing it to set visibility from `AwaitsUsername()`. This refreshes
the display-name section whenever `setCurrentPage` shows the entry page.
Review comments at @src/qt/platform/identityflow.cpp:
- Around line 483-488: Update IdentityFlow::start() to reject a new registration
when m_record.state is REGISTERED, returning false with an appropriate error
before creating an asset lock or replacing the existing record. Preserve the
existing active-registration guard for other states.
Review comments at @src/qt/walletmodel.cpp:
- Around line 345-347: In the error branch after wallet().commitTransaction
fails, call wallet().abandonTransaction with newTx’s hash before returning
TransactionCommitFailed, so the failed submission releases the transaction’s
inputs.
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Inline comments:
Review comments at @src/qt/walletmodel.cpp:
- Line 350: Update SendCoinsDialog::processSendCoinsReturn to show a general
broadcast-failure message for TransactionCommitFailed instead of implying
mempool rejection, and update the relevant assertion in the wallet tests to
expect that message.
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Inline comments:
Review comments at @src/qt/platform/platformpage.cpp:
- Around line 598-607: After the confirmation succeeds in disableDashPay(),
recheck holdsUnconsumedFunding() before deleting m_wizard or clearing records;
if funding is held, warn the user and return false without wiping records.
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Final validation — Phase 1 + Phase 2
Verified all six supplied agent findings against the exact head and the username-registration commit's callers, persistence logic, client contract, and tests. Three blocking lifecycle defects can lose funding recovery information or prevent registration from resuming; the remaining findings concern a persistence rollback error and two user-interface defects. Validation was source-based; no runtime reproduction or test execution is claimed.
🔴 3 blocking | 🟡 2 suggestion(s) | 💬 1 nitpick(s)
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (agent: phase1-reviewer, role: general); reviewer 2: muse-spark-1.3-contributor (agent: phase1-reviewer, role: dash-core-commit-history); reviewer 3: gpt-6-astra (agent: phase2-reviewer, role: general); reviewer 4: gpt-6-astra (agent: phase2-reviewer, role: dash-core-commit-history); final verifier: gpt-6-astra (agent: astra-verifier, role: final-verifier)
- Triage:
criticalbygpt-6-astra(effort low) — The scoped commit adds an intricate persisted registration state machine in src/qt/platform/identityflow.cpp that directly creates asset-lock funding transactions, manages wallet unlock lifetimes, and signs and replays identity and DPNS transitions, changing both funds movement and signature/key handling. - Phase 1 reviewers:
muse-spark-1.3-contributor— general (completed, effort xhigh); agentphase1-reviewer,muse-spark-1.3-contributor— dash-core-commit-history (completed, effort xhigh); agentphase1-reviewer - Phase 1 model:
muse-spark-1.3-contributor— not quota-gated; passed overgemini-3.8-flash-high(antigravity below 15% reserve: weekly 13% left, 5h 100% left),glm-5.3-flash(not used above high effort; tier asks max) - Fresh verifier:
gpt-6-astra— final-verifier; agentastra-verifier - Phase 2 reviewers:
gpt-6-astra— general (completed, effort xhigh); agentphase2-reviewer,gpt-6-astra— dash-core-commit-history (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/qt/platform/identityflow.cpp`:
- [BLOCKING] src/qt/platform/identityflow.cpp:531-537: Check for an existing identity before funding a new one
After a successful registration, disabling DashPay calls WipeRecords() without preserving the identity record. Re-enabling therefore loads NONE, and choosing a different available username reaches this new asset-lock transaction even though the seed already owns an identity. The REGISTERED guard cannot protect this path because that state was erased. Identity creation then uses the same IdentityAuthKey{0, id} derivations, but no production caller invokes getIdentityByPublicKeyHash to discover the existing identity before committing another funding payment. This also affects a wallet restored from its seed. Require a proved identity lookup before fresh funding and recover or refuse when an identity exists. At minimum, preserve registered identity data across opt-out until the promised recovery is implemented, rather than exposing an unnecessary second asset lock.
- [BLOCKING] src/qt/platform/identityflow.cpp:774-778: Retain funding records after a local rebroadcast refusal
A transaction already broadcast can still confirm after 30 seconds of local rebroadcast failures. For example, an asset lock without an InstantSend lock can be evicted locally and fall below the increased mempool fee floor while another node retains and later mines it. abandonTransaction() only changes local wallet state; it does not cancel the network transaction. This fatal failure stores resume_state=FUNDING_SENT, which HoldsUnconsumedFunding() treats as safe to discard, and reset() subsequently erases the funding reference. Opt-out or another registration can therefore strand the original asset lock. The abandonment result is also ignored if confirmation or an InstantSend lock races with the preceding status check. Preserve the funding reference and reconcile its eventual outcome instead of treating local abandonment as proof that the payment cannot confirm.
- [BLOCKING] src/qt/platform/identityflow.cpp:867-872: Bootstrap the verified protocol version when resuming unsigned funding
Restarting after the asset lock is committed but before signed_identity_create is persisted leaves the new SDK client without a verified Platform read. PlatformClient explicitly requires that read to establish the protocol version before any builder can succeed. The FUNDING_SENT and FUNDING_LOCKED paths only inspect local transaction locks before reaching this builder; fetchDashboard() excludes these states and refreshIdentityBalance() has no confirmed identity to query. Builder failures eventually enter FAILED, and Try again returns to FUNDING_LOCKED without establishing the missing version. The restart test only recreates the service after transitions have already been signed, and FakePlatformClient does not enforce this prerequisite. Obtain a proved Platform response before building an unsigned resumed identity, and treat unavailable reads as transient waits.
- [SUGGESTION] src/qt/platform/identityflow.cpp:414-420: retryAfterUnlock() discards resume_state before a fallible save
retryAfterUnlock() clears resume_state before calling setState(resume). If the wallet-DB write fails, setState() restores state to NEEDS_UNLOCK but does not restore resume_state, leaving it as NONE in memory. A subsequent retry therefore transitions to NONE rather than returning to the funding or identity step. The previous persisted record can recover the progress on restart, but the live flow no longer protects or advances it correctly. Restore the saved resume state when setState() fails so a temporary persistence failure cannot discard the continuation.
In `src/qt/platform/createusernamewizard.cpp`:
- [SUGGESTION] src/qt/platform/createusernamewizard.cpp:122-125: "Add profile…" emits a signal nothing handles
A registration that completes without a chosen profile exposes the Add profile… button. Clicking it accepts the dialog and emits addProfileRequested(), but there is no connection to that signal anywhere in this tree; PlatformPage::openWizard() only connects QDialog::finished. The advertised action therefore just closes the wizard. Connect it to a working profile editor, or hide the button until the follow-up implementing that editor lands.
- [NITPICK] src/qt/platform/createusernamewizard.cpp:247-249: "Unlock and continue…" ignores writesAllowed, unlike "Try again…"
The NEEDS_UNLOCK button inherits the progress page's unconditional completeness, so it remains enabled when writesAllowed() refuses writes because of an unsupported protocol version or network mismatch. Clicking it resumes the flow, but unlockForStep() then refuses before displaying a passphrase prompt; the refusal is appended to the normally hidden log. Apply the same writesAllowed() gate and explanatory tooltip used by Try again… so the button does not promise an unlock action that cannot run.
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| const auto funding_pubkey{wallet.getPlatformPubKey(wallet::RegistrationFundingKey{0})}; | ||
| if (!funding_pubkey) { | ||
| error = tr("Dash Core could not derive the key for the funding payment from this wallet."); | ||
| return false; | ||
| } | ||
|
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||
| auto res{wallet.createAssetLockTransaction(funding_amount, funding_pubkey.value, wallet::CCoinControl{})}; |
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🔴 Blocking: Check for an existing identity before funding a new one
After a successful registration, disabling DashPay calls WipeRecords() without preserving the identity record. Re-enabling therefore loads NONE, and choosing a different available username reaches this new asset-lock transaction even though the seed already owns an identity. The REGISTERED guard cannot protect this path because that state was erased. Identity creation then uses the same IdentityAuthKey{0, id} derivations, but no production caller invokes getIdentityByPublicKeyHash to discover the existing identity before committing another funding payment. This also affects a wallet restored from its seed. Require a proved identity lookup before fresh funding and recover or refuse when an identity exists. At minimum, preserve registered identity data across opt-out until the promised recovery is implemented, rather than exposing an unnecessary second asset lock.
source: gpt-6-astra (phase2-reviewer: general)
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Correct for this commit on its own: after an opt-out wipe, nothing here proves the seed has no identity before funding. It's closed later in the stack by "DashPay contact payments, seed recovery and identity details" (#7767). There, IdentityFlow::start() refuses unless PlatformService::registrationAllowed() holds. That requires seed recovery to have proved absence at every probed identity index, where only a proven absence of the MASTER key hash counts. A found identity is restored instead, and an unanswered probe blocks registration. Pulling recovery into this commit would move that whole subsystem forward, so it stays there; the PRs merge as a stack.
🤖 Posted autonomously by Claude on behalf of pasta.
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Still applies (re-reviewed at ffc110da): I agree the per-index proved-absence probing in #7767 would close this, but at this head start still funds without any identity check and opt-out still wipes the identity, so a minimal keep of that record would avoid the second-funding window without moving the full recovery subsystem.
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| connect(m_secondary, &QPushButton::clicked, this, [this] { | ||
| accept(); | ||
| Q_EMIT addProfileRequested(); | ||
| }); |
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🟡 Suggestion: "Add profile…" emits a signal nothing handles
A registration that completes without a chosen profile exposes the Add profile… button. Clicking it accepts the dialog and emits addProfileRequested(), but there is no connection to that signal anywhere in this tree; PlatformPage::openWizard() only connects QDialog::finished. The advertised action therefore just closes the wizard. Connect it to a working profile editor, or hide the button until the follow-up implementing that editor lands.
source: muse-spark-1.3-contributor (phase1-reviewer: general, dash-core-commit-history)
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Right for this commit alone: the profile editor it should open arrives in the next PR of the stack, "DashPay profiles and contacts" (#7766). There, PlatformPage::openWizard() connects addProfileRequested to the dashboard's Edit profile action (queued, after the wizard closes). Keeping the button here avoids hiding it and adding it back one commit later.
🤖 Posted autonomously by Claude on behalf of pasta.
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Deferred (re-reviewed at ffc110da): Understood, keeping the button so #7766 can wire addProfileRequested to the dashboard editor avoids churn, but please keep the stack order so this commit never lands alone with a dead action.
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…M_GUI knob PLATFORM_GUI=1 adds native_rust, rust_stdlib, prebuilt protoc 32.0 (native_protobuf) and platform_cxx, which builds packages/rs-platform-cxx of dashpay/platform and installs its static library and cxx headers. The knob follows MULTIPROCESS: default package sets are unchanged, and config.site enables --enable-platform-gui. Combining it with NO_QT or NO_WALLET is an error, since the bindings are for the GUI wallet only. platform_cxx is built with cargo build --frozen --offline from two sha256-pinned archives, the Platform source tarball at the pinned commit and a crate bundle; depends never vendors crates. Both archives must be on the depends sources mirror before this is merged. contrib/devtools/platform-bundle.sh produces the bundle reproducibly from a commit: workspace trimmed to the crate, Cargo.lock pruned to it, cargo vendor --locked --versioned-dirs, crates outside the build closure reduced to their manifests, the Tenderdash source archive for the tag the lock pins together with TENDERDASH_COMMITISH set to that tag, and tar and gzip with fixed metadata. It prints the pins for platform_cxx.mk. Only the bundle's Cargo configuration is used: Cargo runs from / with --config, its home is private, and variables that would change the build (wrappers, CARGO_BUILD_*, CARGO_PROFILE_*, CARGO_TARGET_*, per-target compiler overrides, TENDERDASH_*) are unset. The release profile is pinned to Platform's (Cargo's default, panic=unwind). The depends host compiler links the crate and compiles its C and C++, the build compiler links build scripts and proc macros, and the build directory is remapped out of the objects. The build refuses a dependency graph that reaches the trusted context provider, an HTTP client or OpenSSL. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The option (default no) requires the GUI and the wallet, and checks that a program using the Dash Platform CXX bindings links: it includes dash/platform/ffi.h and creates and shuts down a platform_ffi::PlatformClient. PLATFORM_CXX_LIBS names the bindings library and defaults to -ldash_platform_cxx from the depends prefix; the system libraries rustc reports for the archive (less the C++ runtime) are always appended to it. The option defines ENABLE_PLATFORM_GUI and the automake conditional of the same name, under which PLATFORM_CXX_LIBS is added to the link of dash-qt, test_dash and test_dash-qt only; dashd and the other binaries never link it, and nothing references the bindings yet. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
A dash-qt built with --enable-platform-gui for Windows imports: - CRYPT32, ncrypt and Secur32: the rustls platform verifier reads the system trust store through schannel; - ntdll: the Rust standard library and mio; - bcryptprimitives (ProcessPrng) and api-ms-win-core-synch-l1-2-0 (WaitOnAddress): raw-dylib imports of the Rust standard library. Only dash-qt with the option imports them; the list is shared by every binary, so check-no-rust.py keeps the others free of Rust instead. windows-sys names its DLLs in lowercase, so the check now compares DLL names case-insensitively, as Windows does. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
The job builds depends with PLATFORM_GUI=1 and dash-qt with --enable-platform-gui (enabled through config.site) and runs the unit tests. contrib/devtools/check-no-rust.py then fails the build if dashd, dash-cli, dash-tx, dash-wallet or the fuzz binary contain cxx bridge, Rust runtime or Rust standard library symbols, or no symbols at all: the bindings are for dash-qt only. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Expose the Tenderdash chain id of each network's Dash Platform through CChainParams::PlatformChainId(), beside the existing Platform ports and bech32 HRP: "evo1" on mainnet and "dash-testnet-51" on testnet, matching the genesis chain_id in dashmate's mainnet and testnet config defaults. Devnet and regtest have no canonical Platform chain and carry an empty id. This is a network parameter a Platform client verifies signed response metadata against; it is not a consensus rule, so it stays out of Consensus::Params. No new command-line options are added. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…C seams FriendshipXpub carries the BIP32 parent fingerprint of the friendship leaf, so CompactXpubBytes() yields the 69-byte DIP-15 compact form (parentFingerprint || chainCode || pubKey) that contactRequest encryptedPublicKey and the accountReference MAC are computed over. The fingerprint is that of the key one step above the final 256-bit derivation, as rust-dashcore's key-wallet reports it. interfaces::Wallet::platformAccountReferenceMac computes HMAC-SHA256 keyed by the derived ENCRYPTION private key over the compact xpub, matching rs-platform-encryption's calculate_account_reference; only the 32-byte MAC leaves the wallet and the ASK28 masking stays with the caller. It is purpose-specific rather than a generic keyed-hash oracle. Both it and platformECDHSecret refuse key index 0, the identity MASTER key, which DIP-15 never uses for either operation. Tests: ECDH known-answer vector ported from rs-platform-encryption, parent fingerprint, compact xpub, accountReference MAC and DIP-15 payment-address vectors generated with key-wallet e4208c90786a and rs-platform-encryption from the DIP-14 test seed, and MASTER-key refusals. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
interfaces::Wallet::createAssetLockTransaction builds, funds and signs a version 1 asset lock paying credits to a single P2PKH funding key, the only payload version CheckAssetLockTx accepts before v24 and IsStandardSpecialTx relays after it, and refuses a result the mempool would drop as non-standard. CWallet::CommitTransaction gains an optional broadcast_error out-parameter and interfaces::Wallet::commitTransaction returns the mempool rejection reason, so a caller can abandon a transaction that was committed but not accepted for relay. Both are compiled unconditionally; no build option gates them. The wallet_tests case builds an asset lock against a DIP0003-active regtest chain, checks it passes CheckAssetLockTx on both sides of the v24 boundary, commits it to the mempool, and verifies that a conflicting second lock is reported as txn-mempool-conflict and can be abandoned. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
CWallet::CommitTransaction reports a broadcast error when the mempool refuses the committed transaction (interfaces::Wallet::commitTransaction returns it), but WalletModel::sendCoins ignored it: the send dialog announced coinsSent, cleared the form and the transaction lingered in the wallet as a pending debit that was never on its way. sendCoins now returns a SendCoinsReturn with the new TransactionCommitFailed code and the mempool's reason, and the dialog shows it as an error and keeps the form instead of treating the send as done. Test (test_dash-qt wallettests): a send whose commit the mempool refuses (the wallet's fee ceiling lowered between preparation and commit) raises the error message, emits no coinsSent, and the transaction is not in the mempool. The case runs where WalletTests runs (not on macOS's minimal platform). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
…able-platform-gui src/platform is the Qt-free client library dash-qt drives for DashPay: the abstract PlatformClient seam, its SDK-backed SdkClient, the SigningOperation and WalletSigner custody boundary, thin adapters over the SDK's state-transition builders, the pure DPNS and DIP-15 helpers, and the wallet record formats. It is linked into dash-qt, test_dash and test_dash-qt only. SdkClient runs every read and broadcast on one serial worker thread and forwards each to dash-platform-cxx, which owns transport, retries, proof verification, the signed-time window, the protocol-version ratchet and the chain-id, ChainLock-lag and height-watermark freshness checks. One enqueue is one SDK request: paged reads return a single page with a cursor the caller continues from later. Outcomes are typed by the shell's nine-kind Status; the value of a verified read is present under OK and UnsupportedProtocolVersion, absence is a proven outcome, and broadcast replies are advisory. Endpoints are pushed in place (an empty set removes every endpoint), quorum keys in Core's internal byte order (the shell normalizes), and the ChainLock height from both the timer and NotifyChainLock. ClientConfig carries the SOCKS5 proxy every connection goes through, fixed for the client's life as Core's proxies are for the process's: a numeric address or a Unix socket path, with -proxyrandomize as fresh credentials per connection so Tor builds a circuit for each; none connects directly. The shell verifies TLS end to end through the proxy, resolves nothing locally, does not count a proxy failure against the evonode, and refuses a proxy it cannot use rather than connecting directly, so MakeSdkPlatformClient returns no client then. A state-transition builder can only be called with a SigningOperation: move-only, minted by PlatformService alone, carrying the operation kind, the key ids it may sign with, a one-shot asset-lock flag and the wallet unlock scope as an abstract RAII handle. WalletSigner receives the full signable preimage, computes the double SHA256 itself, checks the StateTransition variant byte (2 batch, 3 identity create, pinned by the shell's test vectors) against the operation kind, refuses keys outside the operation and signs through interfaces::Wallet::signPlatformDigest; the asset-lock sighash is the one digest path, accepted once per operation. Private keys never cross the bridge. The C++ protocol reimplementations of the previous draft (dpp/*, statetransitions, params) are gone: normalization, the contested rule, salted hashes, identity and document ids, entropy, nonce masking, compact-xpub layout, AES, accountReference masking, key-purpose policy, fee constants, credits per duff and system contract ids all come from the shell. IdentityRecord v2 adds NEEDS_UNLOCK and a resume state, and may end with the state transitions a registration signed ahead (identity create, username preorder and domain with their identity contract nonces and the protocol version they were built under, the profile chosen at registration) and the typed result of its last failure (operation, time, status kind, consensus code, message), so what a failure says is worded when it is shown and Show details survives a restart; a v2 record without them ends at started_at and reads unchanged. A record set of another layout version or chain is wiped, never migrated. Tests: platform_client_tests (status mapping and value presence, marshalling round trips, one page per call with the cursor, WalletSigner key and kind scoping, the single asset-lock signature, the locked-wallet refusal, the pure helpers, record serialization with and without the signed transitions and the failure, the canonical-encoding refusals, the version rule, and the proxy as the SDK receives it with an unusable one giving no client) over FakePlatformClient and a seeded descriptor wallet; a pure-C++ fuzz target over the wallet records. doc/platform-gui.md documents the trust model, custody contract, threading, privacy gating and repin policy. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Node::isReachable(Network) answers whether outbound connections to a network are allowed, from g_reachable_nets: the effect of -onlynet, -onion, -noonion and the onion proxy the Tor controller configures once it has connected. The DashPay GUI needs it to choose how it connects to evonodes the way Core connects to its peers, and reading -onlynet itself would miss everything but -onlynet. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Add the DashPay tab (behind the Show DashPay Tab option, default off) with the per-wallet opt-in it needs before anything contacts Platform. The opt-in dialog says the wallet connects to Dash Platform through evonodes and what the evonode answering each request can see (your IP address, or your proxy's; your identity and what it looks up; the usernames you search for), that connections are encrypted and use the same network settings and proxy as the rest of Dash Core, and that usernames, profiles and contact requests are public. It writes only the platform/enabled record and the record layout version. The chain id the records belong to is never taken from configuration: the first read the client verified stamps platform/chain-id with the chain id it was verified for. PlatformPage::maybeCreateService constructs the PlatformService only when the wallet opted in, is a descriptor wallet holding its own keys, the node's network settings leave DashPay a network to use, network activity is on and the node has a ChainLock; otherwise the page shows the reason. DashPay connects to evonodes as Core connects to its peers (PlatformRoute): with IPv4 or IPv6 reachable, through -proxy or directly, to evonodes on those networks, and to onion ones only when the onion proxy is that same proxy; with only onion reachable (-onlynet=onion), through the onion proxy to onion evonodes; never to I2P or CJDNS ones. The reachable networks come from interfaces::Node::isReachable and the proxies from getProxy, so -onion, -noonion and the Tor controller's onion proxy count, not -onlynet alone. The route is chosen once when the service is created, its proxy configures the client, and only evonodes on it are pushed; when the masternode list has evonodes but none on the route, nothing is pushed and the page says no evonode can be reached over the networks the settings allow. The service pushes an empty endpoint set while network activity is off, feeds evonode endpoints, Platform quorum keys and the best ChainLock height into the client on a timer and on every NotifyChainLock, and mints the SigningOperation every write signs under, which needs a wallet unlock that is released with the operation. Every client status passes through the service: an UnsupportedProtocolVersion freezes writes; a CHAIN_ID_MISMATCH on any response enters the mismatch state, which blocks writes until a verified read clears it; and records stamped for another chain id enter the network-changed state, which offers to discard the local Platform state and re-scan rather than leaving the wallet registered on a chain that no longer exists. -platformchainid is a GUI-only argument applied on testnet and devnets and refused at startup on mainnet; the chain id itself comes from CChainParams::PlatformChainId(). The mismatch text names -platformchainid only when it is set. WalletModel::UnlockContext becomes movable so an operation can own it. After this commit the tab shows only the opt-in state; usernames, contacts and payments follow. Tests (test_dash-qt PlatformTests over FakePlatformClient): no service and no client with the opt-in off; opting in records no chain id; with no network DashPay can use the service is refused with a reason, while a proxy is no gate; the route for Core's defaults, -proxy, -proxy with -onion or -noonion, a Unix socket proxy, -onlynet=ipv4 and -onlynet=onion with and without an onion proxy, never reaching I2P, and read from the node's reachable networks (routeSelection); evonodes off the route not pushed and reported until one on it is (endpointsOffTheRouteAreNotPushed); the opt-in text names evonodes and the proxy and not other people or a proxy left unused (optInDisclosureCopy); the mainnet chain id is never overridden; records for another chain enter the network-changed state where nothing signs until they are discarded, and discarding leaves the chain id to the next verified read; an inactive network pushes an empty endpoint set; opting out wipes every record; every failure kind has a user-visible description and OK/AlreadyExists have none. The welcome and network-changed panels are a centred column between stretches rather than an aligned widget, so wrapped text gets the height its width needs, and a card whose text changes is measured again. When -platformchainid is set, the network-changed page says the setting may be what is wrong. The service pushes endpoints again as soon as network activity is back and reports when endpoints return (endpointsAvailable) and when network activity changes. A context change that comes while the endpoints are being collected (network activity turned off or on again quickly) has them collected again when that collection lands, not at the next timer tick, and the collection made before the change is dropped rather than pushed, so a set gathered while network activity was on never reaches the client after it was turned off. A message line can show a message that clears itself after a few seconds, and Show details text is built from the failed step's operation, status and time. Headings use the Overview page's section size. Test: network activity off empties the client's endpoints, turning it on pushes them again at once, a quick off and on collects them again, and a quick on and off pushes only the empty set (networkResumePushesEndpointsAgain). The page is built from shared DashPay building blocks (qt/platform/platformui): the masternode dialogs' secondary-button style, busy bar and hints, and a message line with a Show details / Copy details disclosure. A failed Platform call is described in plain sentences mapped from its status kind and rs-dpp consensus code; the raw result is only in the details. A page that cannot start names what resolves it (Turn network on) or, for network settings, says what DashPay needs. Test: status descriptions are sentences without codes or internal messages, with the result in the details, and the mismatch text mentions -platformchainid only when it is set. DashPay is turned on and off in Options, Wallet, in a DashPay group for the wallet the main window shows (DashPayOptionsWidget). Opting in is a per-wallet record, not a global setting, so the group names the wallet, says each wallet has its own setting, and its Enable DashPay… or Disable DashPay… acts at once through the opt-in or a confirmation whose default is Cancel and whose destructive button is secondary, like Reset Options, never through the dialog's OK or Cancel. The DashPay tab has no Disable button: where DashPay is on but not working, the welcome and network-changed pages offer DashPay settings…, which opens that group. The Show DashPay Tab tooltip says hiding the tab does not turn DashPay off. Test: the group turns DashPay on through the opt-in and off through the confirmation, Cancel changes nothing, and the tab offers no Disable button (dashPayOptionsSection). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
IdentityFlow is the persisted, resumable state machine behind username registration: fund an asset lock, wait for its InstantSend or ChainLock, create the identity, preorder and register the DPNS name, and confirm each step by a proved re-query. A registration asks for the passphrase once: the unlock the user gives to fund the asset lock is held while the funding payment gets its InstantSend lock (at most a minute, usually seconds), and then the identity create, the DPNS preorder and domain and, when the user entered a display name in the wizard, the DashPay profile are signed in one go, each under its own kind-scoped SigningOperation, and persisted in the record before the wallet is locked again. A brand-new identity has used no contract, and Drive accepts a first identity contract nonce below 24 and each next one above the last, so the preorder and domain carry DPNS nonces 1 and 2 and the profile DashPay nonce 1. The steps then broadcast what was persisted in order, each confirmed by a proved re-query before the next goes out: the preorder by the DPNS nonce Platform has taken, the domain (sent only once the preorder's nonce is taken, which the domain's data trigger needs) by a proved resolve, the profile by a proved read. A restart resends what was persisted without prompting. The minute is a monotonic single-shot timer, so a wall clock stepped back cannot keep the wallet unlocked longer. Each transition signed ahead records the protocol version a verified read had shown when it was built. Where nothing was signed ahead (the lock did not come within the minute, an existing identity registering a name, a record of an earlier layout, a transition refused as stale or its nonce spent) or it was built under another protocol version than Platform now runs, the step signs when it gets there, the preorder together with its domain, under one prompt; when the user declines to unlock, the flow parks in NEEDS_UNLOCK and only moves again on a user action or a wallet unlock, never on the 5 s tick. No private key is held unlocked across an open-ended network wait. The identity registers four keys, 0 AUTH/MASTER, 1 AUTH/HIGH, 2 ENCRYPTION/MEDIUM and 3 DECRYPTION/MEDIUM, with keys 2 and 3 bound to the DashPay contactRequest document type, as the mobile wallets do; every key signs its own possession proof and the funding key signs the asset lock once. The identity id comes from the built transition. Before any credits are spent on the name, a proved resolve adopts a name this identity already owns (its confirmation was lost, or another wallet with the same seed registered it) and fails on one someone else owns. Broadcast decisions are typed: success is OK or AlreadyExists; on the preorder step a DuplicateUniqueIndexError (the saltedDomainHash index) means an earlier preorder was applied, so the domain is signed at the nonce Platform shows next; on the domain step a DataTriggerConditionError means the preorder is not visible yet, so the same domain is sent again at each poll and, after the confirmation window, the username goes out again from its preorder with the persisted salt; an InvalidIdentityNonceError has the nonce read again, which Core owns; an InvalidDocumentTransitionIdError on a preorder or domain signed ahead (protocol version 14 derives document ids from the identity contract nonce) has it signed again at the same nonce, which the CheckTx refusal did not spend, instead of failing the registration. A profile signed ahead under an earlier protocol version is not sent; the user adds it from the dashboard. Confirmations are polled with a backoff (5 s growing to 30 s) for three minutes before anything is broadcast again, since Platform took over a minute to include a transition on testnet. A contested registration is funded from contested_vote_fund_credits() under the protocol version a verified read has shown, plus the base amount, instead of a constant; an existing identity registers a premium name only when its proved balance covers the vote reserve plus a documented fee reserve for the preorder and domain transitions, and the cost page says so. The registration wizard (name entry with proved availability, cost confirmation, live progress with an unlock button) and the dashboard show the flow. Tests (test_dash-qt over FakePlatformClient): the four-key set and the contested funding amount, the consensus-code and nonce steering with the persisted salt on every DPNS build and nothing re-sent before the backoff allows, the proved-resolve confirmation refusing a name registered by another identity, a name already ours adopted without a preorder and one owned by someone else failing before any build (registrationAdoptsNameAlreadyOurs), a premium name refused for a balance equal to the vote reserve and built at exactly the reserve plus fees (contestedNameNeedsIdentityCredits), the NEEDS_UNLOCK park and resume on a locked encrypted wallet with the HIGH key scoped and the signed domain sent later without a prompt, one prompt signing the identity, preorder, domain and profile with everything persisted before the wallet is locked and a restart broadcasting it all in order without prompting (registrationSignsOnceAndResumesAfterRestart), a spent domain nonce signed again under one prompt (registrationSignsSpentStepAgain), a preorder and domain signed under an earlier protocol version or refused for their document id signed again at the same nonce with one prompt each instead of failing, and such a profile not sent (registrationSignsAgainAfterUpgrade), a failure stored by an earlier build worded like a new one and a new failure's details surviving a reload (storedFailuresAreWordedWhenShown), and the wizard entry page completing only on a proved availability answer, stating the username rule once and showing Stored as only for a valid name. The dashboard is a header (an avatar filled from the theme's blue, green and orange, never purple, and neutral until the username is registered or up for the vote), a state card with its action under its text and the registration step, and the paused, frozen or mismatch notice in the overview's alert style. Disable DashPay… in Options stays disabled, saying why in text, while an asset lock is on chain that no identity consumed yet (funding, creating the identity, waiting for the passphrase there, or failed with the lock kept for Try again), also while a gate keeps the service from starting: the records are its only trace and seed recovery finds identities, not asset locks; the Options group names the registered username. For the same reason, rebuilding after a network change and the record-layout wipe keep that registration record and continue it on the current chain. A refusal while the records are for another network says to rebuild them rather than blaming a Platform answer. The wizard uses the masternode wizard's frame, window-modal to the main window and closed when the page is left but not when the window goes to the tray; its progress page is a checklist whose buttons are Close, Unlock and continue…, Try again… or Done, and a failure says what the attempt kept. Tests: no avatar colour is purple in either theme, the step and reassurance wording, the progress page's buttons, plain failure text and registered wording with and without a display name, the page offering no Disable button and the Options guard with its reason shown (unconsumedFundingBlocksDisable), and the funding record surviving a rebuild after a network change (networkChangeKeepsUnconsumedFunding). The wizard's name page has an optional Display name (for a new identity), its cost page lists only the rows that apply and keeps the cost short with the balance on Dash Platform in the explanation, and its log words each step once: a step the flow goes back to while it waits for Platform is not logged again. What a failure says is worded from the stored status when it is shown, so a record written by an earlier build no longer shows a raw consensus code. The dashboard is a centred column at most 1040 px wide; its username uses the section heading size; it reads nothing while the node has pushed no evonode endpoints, and reads its balance again 30 s after a failed read (one pending retry, restarted by the next failure and stopped while paused or hidden), and once the endpoints are pushed again after a pause (endpointsAvailable) rather than only when the tab is shown again; the paused notice says DashPay is paused while network activity is off; and Try again… opens a fresh wizard even when an earlier one was left open. Headings are bold from the first paint. The Username registered page suggests adding a profile, and offers Add profile…, unless the display name chosen with the username is being published or was published: one the flow could not sign or gave up on is offered again (usernameProgressWording). Platform balances are Dash, never credits: the header says Balance on Dash Platform: 0.00722958 tDASH in the wallet's display unit (PlatformUi::formatPlatformBalance, rounded down to a duff so it never overstates) and shows it again in a new unit when the user changes it, and the wizard, the identity flow's premium-cost failure and the error texts say balance on Dash Platform with Dash amounts. The dashboard reads its identity when the page is shown or the window becomes active (not again within 30 s), after a pause and after the user's own changes; a premium username's votes are read again on a ChainLock while the page is shown, at most every ten minutes, with a five-minute timer as the fallback, and the card says when they were last read instead of offering Refresh votes. Nothing is read while the page is hidden. The page takes the factory of its Platform client, so a test drives the page's own service over a scripted client. Tests: the balance line in DASH and again in mDASH after a unit change, the identity-ready card with the amount, and no credit wording on the page or in the failure texts (balanceShownAsDash); a premium-cost failure states Dash amounts (contestedNameNeedsIdentityCredits); with -proxy the page's own service starts, its client is configured with that proxy and per-connection isolation, and evonodes are pushed (serviceStartsThroughTheProxy). Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
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⚠️ DEGRADED — Re-review — Final validation — Phase 2 only (queue backlog)
⚠️ DEGRADED review. The primary review models were unavailable (gpt-6.1-solunavailable: Request rejected (429) · All credentials for model gpt-6.1-sol are cooling down (last error: usage_limit_reached: The us), so this review ran on stand-in models:gpt-5.6-luna→muse-spark-1.3-contributor,gpt-5.6-sol→muse-spark-1.3-contributor,gpt-5.6-terra→muse-spark-1.3-contributor,gpt-6-astra→muse-spark-1.3-contributor,gpt-6.1-sol→muse-spark-1.3-contributor. Both review phases and the independent verifiers still ran, but on weaker models, with Phase 1 capped athigheffort. Treat the verdict as provisional; a full-strength re-review will run on the next push once the primary models are back.
Five of six prior findings verify as fixed or intentionally deferred at ffc110d, with strong coverage for the resumable registration flow. One blocking funds-risk remains: after opt-out wipes the identity record, re-enabling still funds a second asset lock with no proved-identity check at this head.
🔴 1 blocking
1 carried-forward finding(s) already raised on this PR; not re-posting as new inline comments.
Review provenance
Source: reviewer 1: muse-spark-1.3-contributor (standing in for gpt-6.1-sol) (agent: phase2-reviewer, role: general); reviewer 2: muse-spark-1.3-contributor (standing in for gpt-6.1-sol) (agent: phase2-reviewer, role: dash-core-commit-history); final verifier: muse-spark-1.3-contributor (standing in for gpt-6.1-sol) (agent: sol-verifier, role: final-verifier)
- Degraded mode:
gpt-6.1-solunavailable: Request rejected (429) · All credentials for model gpt-6.1-sol are cooling down (last error: usage_limit_reached: The us (detected by lane, since 2026-09-29T23:52:40Z); stand-insgpt-5.6-luna→muse-spark-1.3-contributor,gpt-5.6-sol→muse-spark-1.3-contributor,gpt-5.6-terra→muse-spark-1.3-contributor,gpt-6-astra→muse-spark-1.3-contributor,gpt-6.1-sol→muse-spark-1.3-contributor; Phase 1 effort capped athigh - Triage:
criticalbymuse-spark-1.3-contributor(standing in forgpt-6.1-sol) (effort low) — The large, intricate diff changes critical surfaces including platform wallet funding, asset-lock and credit-pool funds movement, wallet key/signing handling, persisted registration state, and platform transaction serialization in files such as src/qt/platform/identityflow.cpp and src/platform/signer.cpp. - Phase 1 reviewers: not run (skipped for throughput: 22 PRs queued, above the 10 limit)
- Fresh verifier:
muse-spark-1.3-contributor(standing in forgpt-6.1-sol) — final-verifier; agentsol-verifier - Phase 2 reviewers:
muse-spark-1.3-contributor(standing in forgpt-6.1-sol) — general (completed, effort xhigh); agentphase2-reviewer,muse-spark-1.3-contributor(standing in forgpt-6.1-sol) — dash-core-commit-history (completed, effort xhigh); agentphase2-reviewer
🤖 Prompt for all review comments with AI agents
These findings are from an automated code review. Verify each finding against the current code and only fix it if needed.
In `src/qt/platform/identityflow.cpp`:
- [BLOCKING] src/qt/platform/identityflow.cpp:521-533: Check for an existing identity before funding a new one
(existing thread: https://github.com/dashpay/dash/pull/7765#discussion_r4129210642)
At ffc110da IdentityFlow::start (521-533) still creates a new asset lock (577-581) and commits it (616) with no proved-identity gate: the REGISTERED refusal at 524-528 cannot fire after PlatformPage::disableDashPay wipes records, because holdsUnconsumedFunding (656-659) is false for REGISTERED so WipeRecords at 668 runs without a keep and the next enable loads NONE. No getIdentityByPublicKeyHash or registrationAllowed probe exists at this head. I agree the per-index proved-absence design in #7767 would close the seed-restore half, but the stack still leaves two gaps at this commit: the disable dialog already promises that re-enabling recovers the username while no recovery exists here, and DiscardRecords already shows how to keep the IDENTITY record across a wipe without pulling the full recovery prober forward, so preserving REGISTERED across opt-out is a minimal change confined to this PR.
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Issue being fixed or feature implemented
This PR adds DashPay username registration to dash-qt (tracking issue #7512): fund an identity, create it, and register a DPNS username, with an optional DashPay profile. The DashPay dashboard shows the result.
Stacked PR. It builds on #7671 (opt-in), and so on #7670, #7623, #7763 and #7764. Review from
c10b24b89b25onward, the one commitfeat(qt): DashPay usernames.What was done?
IdentityFlowis a persisted, resumable state machine. Its steps are:One passphrase prompt per registration. The unlock given to fund the asset lock is held while the funding payment gets its InstantSend lock (at most a minute, on a monotonic timer). During that window, the identity create, the DPNS preorder and domain, and the optional profile are each signed under their own kind-scoped
SigningOperation. All of them are persisted before the wallet is locked again.NEEDS_UNLOCK.The identity registers four keys, as the mobile wallets do: 0 AUTH/MASTER, 1 AUTH/HIGH, 2 ENCRYPTION/MEDIUM and 3 DECRYPTION/MEDIUM. Keys 2 and 3 are bound to the DashPay
contactRequesttype.contested_vote_fund_credits()under the verified protocol version, not from a constant.The registration wizard has three pages:
The dashboard has three parts:
Disable DashPay… stays disabled, with the reason shown, while an asset lock is on chain that no identity has consumed yet.
How Has This Been Tested?
test_dash-qtPlatformTests overFakePlatformClient:registrationAdoptsNameAlreadyOurs);contestedNameNeedsIdentityCredits);registrationSignsOnceAndResumesAfterRestart), plusregistrationSignsSpentStepAgainandregistrationSignsAgainAfterUpgrade;NEEDS_UNLOCKpark and resume on a locked encrypted wallet;storedFailuresAreWordedWhenShown), andunconsumedFundingBlocksDisable,networkChangeKeepsUnconsumedFunding,usernameProgressWordingandbalanceShownAsDash;-proxy, the page's own service starts through the proxy with per-connection isolation (serviceStartsThroughTheProxy).On aarch64-apple-darwin, the full
test_dash-qtexited 0 on the stack head against the re-pinned archive (35eac29ae3), with 86 of 86 PlatformTests passing.Live testnet (2026-09-28). Three new wallets registered
qaleo08674,qamia31295andqanora15112through the wizard. Earlier QA rounds registered names on encrypted wallets under a single passphrase prompt, and those names resolve on Platform to the new identities.The dashboard of a newly registered user is shown in #7766, together with contacts.
Breaking Changes
None. Everything is behind
--enable-platform-gui, which is off by default.Checklist:
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