diff --git a/packages/contracts/src/data-rights-contract.typecheck.ts b/packages/contracts/src/data-rights-contract.typecheck.ts
new file mode 100644
index 00000000..1c361aea
--- /dev/null
+++ b/packages/contracts/src/data-rights-contract.typecheck.ts
@@ -0,0 +1,50 @@
+import {
+  DATA_RIGHTS_CONTRIBUTOR_CONTRACT_VERSION,
+  type DataRightsContributorEraseRequest,
+  type DataRightsContributorExportResponse,
+  type DataRightsContributorRequest,
+  type DataRightsContributorResponse,
+} from './data-rights.js';
+
+const WORKSPACE_ID = '22222222-2222-4222-8222-222222222222';
+const USER_ID = '33333333-3333-4333-8333-333333333333';
+const REQUEST_ID = '11111111-1111-4111-8111-111111111111';
+const IDEMPOTENCY_KEY = '44444444-4444-4444-8444-444444444444';
+
+/** Compile-time proof that erase authority cannot omit its replay identity. */
+const eraseRequest: DataRightsContributorEraseRequest = {
+  contractVersion: DATA_RIGHTS_CONTRIBUTOR_CONTRACT_VERSION,
+  operation: 'erase',
+  workspaceId: WORKSPACE_ID,
+  requestedByUserId: USER_ID,
+  requestId: REQUEST_ID,
+  idempotencyKey: IDEMPOTENCY_KEY,
+};
+
+/** Compile-time proof that every operation belongs to the versioned request union. */
+const requestUnion: DataRightsContributorRequest = eraseRequest;
+
+/** Compile-time proof that export evidence is contributor-owned and digest-bearing. */
+const exportResponse: DataRightsContributorExportResponse = {
+  contractVersion: DATA_RIGHTS_CONTRIBUTOR_CONTRACT_VERSION,
+  operation: 'export',
+  contributor: 'planning.service',
+  requestId: REQUEST_ID,
+  schemaVersion: 'planning.data-rights.v1',
+  recordCount: 1,
+  sha256: 'a'.repeat(64),
+  data: Object.freeze({
+    goals: Object.freeze([
+      Object.freeze({
+        id: '55555555-5555-4555-8555-555555555555',
+        title: 'Example goal',
+      }),
+    ]),
+  }),
+};
+
+/** Compile-time proof that concrete evidence remains assignable to the response union. */
+const responseUnion: DataRightsContributorResponse = exportResponse;
+
+void requestUnion;
+void responseUnion;
diff --git a/packages/contracts/src/data-rights.ts b/packages/contracts/src/data-rights.ts
new file mode 100644
index 00000000..d964f2eb
--- /dev/null
+++ b/packages/contracts/src/data-rights.ts
@@ -0,0 +1,113 @@
+/** Versioned internal contract used by independently deployable data-rights contributors. */
+export const DATA_RIGHTS_CONTRIBUTOR_CONTRACT_VERSION =
+  'life-os.data-rights-contributor.v1' as const;
+
+/** JSON-safe primitive allowed in a bounded contributor export section. */
+export type DataRightsJsonPrimitive = boolean | number | string | null;
+
+/** JSON-safe array allowed in a bounded contributor export section. */
+export interface DataRightsJsonArray extends ReadonlyArray<DataRightsJsonValue> {}
+
+/** JSON-safe object allowed in a bounded contributor export section. */
+export interface DataRightsJsonObject {
+  readonly [key: string]: DataRightsJsonValue;
+}
+
+/** JSON-safe value exchanged across the contributor contract. */
+export type DataRightsJsonValue =
+  | DataRightsJsonPrimitive
+  | DataRightsJsonArray
+  | DataRightsJsonObject;
+
+/** Operations exposed by one service-owned data-rights contributor. */
+export type DataRightsContributorOperation =
+  | 'export'
+  | 'erase_preflight'
+  | 'erase'
+  | 'verify_erased';
+
+interface DataRightsContributorRequestBase {
+  readonly contractVersion: typeof DATA_RIGHTS_CONTRIBUTOR_CONTRACT_VERSION;
+  readonly workspaceId: string;
+  readonly requestedByUserId: string;
+  readonly requestId: string;
+}
+
+/** Requests one deterministic bounded export section from the owning service. */
+export interface DataRightsContributorExportRequest
+  extends DataRightsContributorRequestBase {
+  readonly operation: 'export';
+}
+
+/** Requests fail-closed erasure readiness without mutating service-owned data. */
+export interface DataRightsContributorErasePreflightRequest
+  extends DataRightsContributorRequestBase {
+  readonly operation: 'erase_preflight';
+}
+
+/** Requests one idempotent owning-service erasure using an opaque replay key. */
+export interface DataRightsContributorEraseRequest
+  extends DataRightsContributorRequestBase {
+  readonly operation: 'erase';
+  readonly idempotencyKey: string;
+}
+
+/** Requests post-erasure verification from the service that owns the data. */
+export interface DataRightsContributorVerifyErasedRequest
+  extends DataRightsContributorRequestBase {
+  readonly operation: 'verify_erased';
+}
+
+/** Request union for the complete v1 contributor lifecycle. */
+export type DataRightsContributorRequest =
+  | DataRightsContributorExportRequest
+  | DataRightsContributorErasePreflightRequest
+  | DataRightsContributorEraseRequest
+  | DataRightsContributorVerifyErasedRequest;
+
+interface DataRightsContributorResponseBase {
+  readonly contractVersion: typeof DATA_RIGHTS_CONTRIBUTOR_CONTRACT_VERSION;
+  readonly contributor: string;
+  readonly requestId: string;
+}
+
+/** Deterministic service-owned export section plus exact digest evidence. */
+export interface DataRightsContributorExportResponse
+  extends DataRightsContributorResponseBase {
+  readonly operation: 'export';
+  readonly schemaVersion: string;
+  readonly recordCount: number;
+  readonly sha256: string;
+  readonly data: DataRightsJsonValue;
+}
+
+/** Readiness result that cannot claim ready while blockers remain. */
+export interface DataRightsContributorErasePreflightResponse
+  extends DataRightsContributorResponseBase {
+  readonly operation: 'erase_preflight';
+  readonly ready: boolean;
+  readonly blockers: readonly string[];
+}
+
+/** Owning-service erasure receipt with bounded aggregate count and digest. */
+export interface DataRightsContributorEraseResponse
+  extends DataRightsContributorResponseBase {
+  readonly operation: 'erase';
+  readonly erasedRecords: number;
+  readonly receiptSha256: string;
+}
+
+/** Post-erasure verification evidence from the owning service. */
+export interface DataRightsContributorVerifyErasedResponse
+  extends DataRightsContributorResponseBase {
+  readonly operation: 'verify_erased';
+  readonly erased: boolean;
+  readonly evidenceSha256: string;
+}
+
+/** Response union for the complete v1 contributor lifecycle. */
+export type DataRightsContributorResponse =
+  | DataRightsContributorExportResponse
+  | DataRightsContributorErasePreflightResponse
+  | DataRightsContributorEraseResponse
+  | DataRightsContributorVerifyErasedResponse;
diff --git a/packages/contracts/src/index.ts b/packages/contracts/src/index.ts
index e1a97e3f..183e81fa 100644
--- a/packages/contracts/src/index.ts
+++ b/packages/contracts/src/index.ts
@@ -1,3 +1,5 @@
+export * from './data-rights.js';
+
 export type WorkspaceRole = 'owner' | 'admin' | 'member' | 'viewer';
 
 export interface RequestContext {