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What this does: adds privateContactRequest to DashPay v3, a private document type (#5689) of 589-byte entries. An entry is a contact request only its recipient can read. It is encrypted to the recipient's DashPay decryption key and appended by PrivateDocumentCreateFromShieldedPool (#5799), which names no identity and pays from the shielded pool, so the chain does not show who asked whom. The type's properties describe the plaintext the recipient decrypts; the chain never reads it.
Value: this is the last consensus piece of anonymous DashPay contact requests. DashPay v3 is frozen once protocol version 15 ships, so the type has to be in it before then. The envelope format, SDK sending, scanning and the wallets change no state and can follow in a 5.1.x release.
Risks: low. It adds a type to a system contract version that has not been released.
The type's store is created by the paths #5703 built: the contract insert at genesis, and the contract update the upgrade to protocol version 15 runs.
Batch refuses every document transition on a private type, and only type 29 appends to it.
The entry size is frozen with the contract: a later field needs a new type.
Example:
DashPay v3 privateContactRequest, private { entrySize: 589 }
payload: the type's properties in the document property encoding
accountReference 8 bytes (an integer; DashPay stores every integer as an i64)
extendedPublicKey 69 bytes (DIP-15 compact key: fingerprint 4, chain code 32, key 33)
accountLabel 1 + 1 + 0..63 (optional)
autoAcceptProof 1 + 1 + 38..102 (optional)
shieldedAddress 1 + 43 (optional)
largest: 290 bytes
entry = 162 (commitment, ephemeral key, AEAD tag, sender-recovery ciphertext)
+ 137 (envelope header) + 290 = 589
before: a protocol 15 chain stores DashPay v3 with profile, contactInfo and contactRequest
after: it also stores privateContactRequest, with an empty store taking 589-byte entries,
512 to a chunk
type 29, 2 entries of 589 bytes, to DashPay / privateContactRequest
-> executes; the store holds both, each behind the block's height and time
-> fee: shielded base fee + 2 × 27,015,400 credits
type 29, entries of 585 bytes -> PrivateDocumentEntrySizeMismatchError (40152), unpaid
a Batch create of a privateContactRequest -> DocumentTypePrivateError (10425), unpaid
Issue being fixed or feature implemented
DashPay's private contact request type, for anonymous contact requests in 5.1. Sam first set entrySize at 585, from a 286-byte payload that counted accountReference as 4 bytes. Measured against DashPay, which keeps sized integer types off, the largest payload is 290 bytes, so 585 was 4 bytes short. Sam chose 589, the smallest size that holds every field at DIP-15's bounds.
What was done?
dashpay-contract:
privateContactRequest in schema/v3/dashpay.schema.json:
private: { "entrySize": 589 }, documentsMutable and canBeDeleted false;
properties accountReference (integer, 0 to 4294967295), extendedPublicKey (69 bytes), accountLabel (string, at most 63 bytes), autoAcceptProof (38 to 102 bytes) and shieldedAddress (43 bytes);
accountReference and extendedPublicKey required.
src/v3/mod.rs lists the type among v3's changes.
platform-version: note 24 of v15.rs describes the type, its size and where its store is created.
Tests and pins (below).
Not in this PR:
contactRequest.encryptedShieldedAddress, the per-contact shielded address from the DIP-33 amendment (dips#188), which also goes in DashPay v3 before protocol version 15 ships;
the envelope DIP and its code, SDK sending and reading, scanning, and the wallets.
In-place changes to shipped generations
None. DashPay v3 (schema/v3) is selected only by protocol version 15 (SYSTEM_DATA_CONTRACT_VERSIONS_V4), which has not shipped, so it is edited in place.
How Has This Been Tested?
dpp:dashpay_v3_tests::should_size_private_contact_requests_to_hold_their_largest_payload ties the entry size to the properties:
the largest payload encodes to 290 bytes, and 137 + 290 + 162 = 589;
a document of the type serializes to its system fields followed by exactly those bytes;
the smallest payload is 80 bytes.
drive-abci:
should_append_private_contact_requests_to_dashpay: on a chain born at protocol version 15, a type 29 transition with a real Orchard bundle appends two 589-byte entries to DashPay's store, books exactly the fee, and both read back.
The v14 to v15 upgrade test checks that the upgrade creates the store (chunk power 9).
Pins at the latest protocol version that move with the larger contract:
check_tx tests that register the DashPay fixture pay one more document type registration fee (0.02 Dash). Their fixtures are funded with 0.02 Dash more, and five processing fee pins move by about 2,000,000,000 credits each.
The document replace and delete fee pins move by 2,860 credits: DashPay's node beside the test contract's in the contracts tree is larger, and the read bills it. Every DashPay document operation pays the same small amount more.
The state roots of nullifier_batch_guard (9 settled characterizations and 1 root; their fee and validation characterizations are unchanged) and Drive's deterministic_root_hash for protocol version 15.
drive: drive::contract and cache::system_contracts, and the dashpay, deterministic_root_hash and drive_storage_ops_coverage integration tests;
drive-abci: type 29, protocol upgrade, DashPay, nullifier_batch_guard, genesis, check_tx, Batch document, contract-bound auth, key limits, identity create and update, document and identity queries, and data trigger tests;
cargo clippy --all-features --all-targets -- -D warnings on dpp, drive, drive-abci and dashpay-contract.
Not run locally: the drive-abci strategy tests.
Breaking Changes
Consensus: DashPay v3, which protocol version 15 registers at genesis and stores at the upgrade, gains a document type and its store, so the protocol 15 state and the fees that read DashPay's contract node change. No API changes.
I have commented my code, particularly in hard-to-understand areas
I have added or updated relevant unit/integration/functional/e2e tests
I have added "!" to the title and described breaking changes in the corresponding section if my code contains any
I have made corresponding changes to the documentation if needed
If I added or changed GroveDB structure, I described it in the area's structure.rs, regenerated grovedb-structure.json, and checked the structure viewer link posted on this pull request
If I added or changed a system contract's document schemas, I checked the contract viewer link posted on this pull request
Approvals — you own every area touched; none needed
When every merge requirement is met, the PR Hygiene check passes. Reviewer limits do not block merging; other required GitHub checks and protections still apply.
Summary by CodeRabbit
New Features
DashPay v3 now supports private contact requests submitted through the shielded pool. Recipients can read the decrypted request, which can include an account reference, public key, account label, acceptance proof, and shielded address.
Private contact request entries have a fixed 589-byte size and are immutable and non-deletable. The store is available at genesis and when upgrading to protocol version 15.
…s (PV15)
DashPay v3 gains `privateContactRequest`, a private document type of
589-byte entries: a contact request encrypted to its recipient and
appended by PrivateDocumentCreateFromShieldedPool, with no identity and
paid from the shielded pool. Its properties describe the plaintext the
recipient decrypts: accountReference, the DIP-15 compact
extendedPublicKey (69 bytes), and the optional accountLabel (at most 63
bytes), autoAcceptProof (38 to 102) and shieldedAddress (43).
At their largest they encode to 290 bytes (DashPay keeps sized integer
types off, so accountReference is an 8-byte i64), and the private
document envelope adds 299, so 589 is the smallest entry size that holds
every field at DIP-15's bounds. A dpp test pins the size to the
properties.
Genesis creates the type's store as a contract insert does, and the
upgrade to protocol version 15 as a contract update adding a private
type does. A drive-abci test appends two entries to it with a real
Orchard bundle, and the v14 to v15 upgrade test checks the store.
Pins at the latest protocol version move with the larger contract: the
check_tx DashPay fixture pays one more document type registration fee
(fixtures funded with 0.02 Dash more), two document fees bill a larger
sibling node, and the state roots of nullifier_batch_guard and Drive's
deterministic root hash change.
Co-Authored-By: Claude Opus 5.5 <[email protected]>
This pull request adds or changes system contract document schemas. The contract viewer diagrams each one, and a comparison marks what is added, changed and removed, with the update rule each change meets.
DashPay v3 adds the privateContactRequest document type with a fixed 589-byte private entry. The changes describe its schema and storage path, test serialization and shielded-pool appends, and update protocol-upgrade, fee, and state-hash expectations.
Changes: Private contact requests
Layer / File(s)
Summary
Document contract and size checks packages/dashpay-contract/schema/v3/dashpay.schema.json, packages/dashpay-contract/src/v3/mod.rs, packages/rs-dpp/src/system_data_contracts.rs
The schema defines privateContactRequest properties, required fields, and entry constraints. Documentation describes the payload and envelope sizes. Serialization tests check payload bounds, entry size, immutability, and non-deletability.
Private store and protocol activation packages/rs-platform-version/src/version/v15.rs, packages/rs-drive-abci/src/execution/platform_events/.../v0/mod.rs, packages/rs-drive-abci/src/execution/validation/state_transition/.../private_document_create_from_shielded_pool/tests.rs, packages/rs-drive/tests/deterministic_root_hash.rs
The v15 description and upgrade test cover creation of the private store. An integration test processes a shielded-pool transition and verifies two stored entries. The expected deterministic root hash is updated.
CheckTx fees and balances packages/rs-drive-abci/src/execution/check_tx/v0/mod.rs
CheckTx test balances and fee expectations are updated for registration of the additional DashPay document type.
State-transition fees and hashes packages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/document/{deletion,replacement}.rs, packages/rs-drive-abci/src/execution/validation/state_transition/state_transitions/batch/tests/token/shielded/nullifier_batch_guard.rs
Expected document-processing fees and shielded nullifier settled-state hashes are updated.
sequenceDiagram
participant IntegrationTest
participant ShieldedPool
participant PrivateDocumentCreateFromShieldedPool
participant privateContactRequestStore
IntegrationTest->>ShieldedPool: seed pool
IntegrationTest->>PrivateDocumentCreateFromShieldedPool: submit proven transition
PrivateDocumentCreateFromShieldedPool->>privateContactRequestStore: append two entries
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Possibly related PRs
dashpay/platform#4933: Introduces DashPay v3 and its protocol-15 upgrade, which this change extends with privateContactRequest.
Suggested reviewers:shumkov, thepastaclaw
Merge Risk: Minimal · up to 784d1
The change adds private contact requests to DashPay v3 with corresponding storage and test updates. No merge-blocking issue is identified; merge after normal checks pass.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
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Docstring coverage is 57.14% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documenta…
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Passed checks: 4 passed
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Title check
The title clearly describes the addition of private contact requests to the DashPay v3 contract for protocol version 15.
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Full details: Docstring Coverage
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Docstring coverage is 57.14% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff with cyclomatic complexity of at least 2. Documentation-only edits and deletions within surviving functions are included; unchanged diff context and fully deleted functions are excluded. Analyzed 7 functions across 10 files. (1 skipped: 1 unsupported.)
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Write docstrings for the functions missing them to satisfy the coverage threshold.
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Final validation — Phase 1 + Phase 2
Verified the exact head 784d18a against the supplied findings and relevant source paths; no actionable in-scope issues remain. The two preliminary suggestions concern metadata already covered by the shared append-path test and hypothetical schema features absent from this fixed contract type. Static review only: current CI reports successful Rust workspace, wasm32, JavaScript, Kotlin, and Swift checks; review and hygiene checks remain pending.
Triage: normal by gpt-6.1-sol (effort low) — The diff adds a contained consensus-visible system-contract schema and associated tests and pins, but does not introduce large or intricate consensus, cryptographic, or migration logic.
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Basic explanation
What this does: adds
privateContactRequestto DashPay v3, a private document type (#5689) of 589-byte entries. An entry is a contact request only its recipient can read. It is encrypted to the recipient's DashPay decryption key and appended byPrivateDocumentCreateFromShieldedPool(#5799), which names no identity and pays from the shielded pool, so the chain does not show who asked whom. The type's properties describe the plaintext the recipient decrypts; the chain never reads it.Value: this is the last consensus piece of anonymous DashPay contact requests. DashPay v3 is frozen once protocol version 15 ships, so the type has to be in it before then. The envelope format, SDK sending, scanning and the wallets change no state and can follow in a 5.1.x release.
Risks: low. It adds a type to a system contract version that has not been released.
Example:
Issue being fixed or feature implemented
DashPay's private contact request type, for anonymous contact requests in 5.1. Sam first set
entrySizeat 585, from a 286-byte payload that countedaccountReferenceas 4 bytes. Measured against DashPay, which keeps sized integer types off, the largest payload is 290 bytes, so 585 was 4 bytes short. Sam chose 589, the smallest size that holds every field at DIP-15's bounds.What was done?
dashpay-contract:
privateContactRequestinschema/v3/dashpay.schema.json:private: { "entrySize": 589 },documentsMutableandcanBeDeletedfalse;accountReference(integer, 0 to 4294967295),extendedPublicKey(69 bytes),accountLabel(string, at most 63 bytes),autoAcceptProof(38 to 102 bytes) andshieldedAddress(43 bytes);accountReferenceandextendedPublicKeyrequired.src/v3/mod.rslists the type among v3's changes.platform-version: note 24 of
v15.rsdescribes the type, its size and where its store is created.Tests and pins (below).
Not in this PR:
contactRequest.encryptedShieldedAddress, the per-contact shielded address from the DIP-33 amendment (dips#188), which also goes in DashPay v3 before protocol version 15 ships;In-place changes to shipped generations
None. DashPay v3 (
schema/v3) is selected only by protocol version 15 (SYSTEM_DATA_CONTRACT_VERSIONS_V4), which has not shipped, so it is edited in place.How Has This Been Tested?
dashpay_v3_tests::should_size_private_contact_requests_to_hold_their_largest_payloadties the entry size to the properties:should_append_private_contact_requests_to_dashpay: on a chain born at protocol version 15, a type 29 transition with a real Orchard bundle appends two 589-byte entries to DashPay's store, books exactly the fee, and both read back.nullifier_batch_guard(9 settled characterizations and 1 root; their fee and validation characterizations are unchanged) and Drive'sdeterministic_root_hashfor protocol version 15.system_data_contracts, private document,registration_cost,data_contract::,extended_document,validation_schemaand property tests;drive::contractandcache::system_contracts, and thedashpay,deterministic_root_hashanddrive_storage_ops_coverageintegration tests;nullifier_batch_guard, genesis, check_tx, Batch document, contract-bound auth, key limits, identity create and update, document and identity queries, and data trigger tests;cargo clippy --all-features --all-targets -- -D warningson dpp, drive, drive-abci and dashpay-contract.Breaking Changes
Consensus: DashPay v3, which protocol version 15 registers at genesis and stores at the upgrade, gains a document type and its store, so the protocol 15 state and the fees that read DashPay's contract node change. No API changes.
Checklist:
structure.rs, regeneratedgrovedb-structure.json, and checked the structure viewer link posted on this pull requestFor repository code-owners and collaborators only
🤖 Generated with Claude Code
PR Hygiene ·
784d18a/self-reviewedWhen every merge requirement is met, the
PR Hygienecheck passes. Reviewer limits do not block merging; other required GitHub checks and protections still apply.Summary by CodeRabbit