diff --git a/api/index.js b/api/index.js
index 8bc2e057..04f7d074 100644
--- a/api/index.js
+++ b/api/index.js
@@ -98,6 +98,16 @@ const createMeasurement = async (req, res, client) => {
   validate(measurement, 'stationId', { type: 'string', required: true })
   assert(measurement.stationId.match(/^[0-9a-fA-F]{88}$/), 400, 'Invalid Station ID')
 
+  if (measurement.alternativeProviderCheck) {
+    validate(measurement, 'alternativeProviderCheck', { type: 'object', required: false })
+    validate(measurement.alternativeProviderCheck, 'alternativeProviderCheck.statusCode', { type: 'number', required: false })
+    validate(measurement.alternativeProviderCheck, 'alternativeProviderCheck.timeout', { type: 'boolean', required: false })
+    validate(measurement.alternativeProviderCheck, 'alternativeProviderCheck.carTooLarge', { type: 'boolean', required: false })
+    validate(measurement.alternativeProviderCheck, 'alternativeProviderCheck.endAt', { type: 'date', required: false })
+    validate(measurement.alternativeProviderCheck, 'alternativeProviderCheck.protocol', { type: 'string', required: false })
+    validate(measurement.alternativeProviderCheck, 'alternativeProviderCheck.providerId', { type: 'string', required: false })
+  }
+
   const inetGroup = await mapRequestToInetGroup(client, req)
   logNetworkInfo(req.headers, measurement.stationId, recordNetworkInfoTelemetry)
 
@@ -124,10 +134,16 @@ const createMeasurement = async (req, res, client) => {
         indexer_result,
         miner_id,
         provider_id,
+        alternative_provider_check_status_code,
+        alternative_provider_check_timeout,
+        alternative_provider_check_car_too_large,
+        alternative_provider_check_end_at,
+        alternative_provider_check_protocol,
+        alternative_provider_check_provider_id,
         completed_at_round
       )
       SELECT
-        $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21,
+        $1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15, $16, $17, $18, $19, $20, $21, $22, $23, $24, $25, $26, $27
         id as completed_at_round
       FROM spark_rounds
       ORDER BY id DESC
@@ -154,7 +170,13 @@ const createMeasurement = async (req, res, client) => {
     measurement.carChecksum,
     measurement.indexerResult,
     measurement.minerId,
-    measurement.providerId
+    measurement.providerId,
+    measurement.alternativeProviderCheck?.statusCode,
+    measurement.alternativeProviderCheck?.timeout,
+    measurement.alternativeProviderCheck?.carTooLarge ?? false,
+    measurement.alternativeProviderCheck?.endAt,
+    measurement.alternativeProviderCheck?.protocol,
+    measurement.alternativeProviderCheck?.providerId
   ])
   json(res, { id: rows[0].id })
 }
@@ -190,7 +212,15 @@ const getMeasurement = async (req, res, client, measurementId) => {
     endAt: resultRow.end_at,
     byteLength: resultRow.byte_length,
     carTooLarge: resultRow.car_too_large,
-    attestation: resultRow.attestation
+    attestation: resultRow.attestation,
+    alternativeProviderCheck: {
+      statusCode: resultRow.alternative_provider_check_status_code,
+      timeout: resultRow.alternative_provider_check_timeout,
+      carTooLarge: resultRow.alternative_provider_check_car_too_large,
+      endAt: resultRow.alternative_provider_check_end_at,
+      protocol: resultRow.alternative_provider_check_protocol,
+      providerId: resultRow.alternative_provider_check_provider_id
+    }
   })
 }
 
diff --git a/api/test/test.js b/api/test/test.js
index d730e94c..00b81419 100644
--- a/api/test/test.js
+++ b/api/test/test.js
@@ -38,7 +38,15 @@ const VALID_MEASUREMENT = {
   carChecksum: 'somehash',
   minerId: 'f02abc',
   providerId: 'provider-pubkey',
-  indexerResult: 'OK'
+  indexerResult: 'OK',
+  alternativeProviderCheck: {
+    statusCode: 200,
+    timeout: false,
+    carTooLarge: false,
+    endAt: new Date(),
+    protocol: 'graphsync',
+    providerId: 'alt-provider-pubkey'
+  }
 }
 
 const assertResponseStatus = async (res, status) => {
@@ -194,6 +202,15 @@ describe('Routes', () => {
       assert.strictEqual(measurementRow.miner_id, measurement.minerId)
       assert.strictEqual(measurementRow.provider_id, measurement.providerId)
       assert.strictEqual(measurementRow.station_id, measurement.stationId)
+      assert.strictEqual(measurementRow.alternative_provider_check_status_code, measurement.alternativeProviderCheck.statusCode)
+      assert.strictEqual(measurementRow.alternative_provider_check_timeout, measurement.alternativeProviderCheck.timeout)
+      assert.strictEqual(measurementRow.alternative_provider_check_car_too_large, measurement.alternativeProviderCheck.carTooLarge)
+      assert.strictEqual(
+        measurementRow.alternative_provider_check_end_at.toJSON(),
+        measurement.alternativeProviderCheck.endAt.toJSON()
+      )
+      assert.strictEqual(measurementRow.alternative_provider_check_protocol, measurement.alternativeProviderCheck.protocol)
+      assert.strictEqual(measurementRow.alternative_provider_check_provider_id, measurement.alternativeProviderCheck.providerId)
     })
 
     it('allows older format with walletAddress', async () => {
diff --git a/migrations/067.do.measurement-alternative-provider-check.sql b/migrations/067.do.measurement-alternative-provider-check.sql
new file mode 100644
index 00000000..6d13319c
--- /dev/null
+++ b/migrations/067.do.measurement-alternative-provider-check.sql
@@ -0,0 +1,7 @@
+ALTER TABLE measurements
+    ADD COLUMN alternative_provider_check_status_code INTEGER,
+    ADD COLUMN alternative_provider_check_timeout BOOLEAN NOT NULL DEFAULT FALSE,
+    ADD COLUMN alternative_provider_check_car_too_large BOOLEAN NOT NULL DEFAULT FALSE,
+    ADD COLUMN alternative_provider_check_end_at TIMESTAMPTZ,
+    ADD COLUMN alternative_provider_check_protocol protocol,
+    ADD COLUMN alternative_provider_check_provider_id TEXT;
diff --git a/publish/index.js b/publish/index.js
index 72068d2a..c77b8bb6 100644
--- a/publish/index.js
+++ b/publish/index.js
@@ -37,7 +37,15 @@ export const publish = async ({
       provider_id,
       cid,
       provider_address,
-      protocol
+      protocol,
+      jsonb_build_object(
+        'status_code', alternative_provider_check_status_code,
+        'timeout', alternative_provider_check_timeout,
+        'car_too_large', alternative_provider_check_car_too_large,
+        'end_at', alternative_provider_check_end_at,
+        'protocol', alternative_provider_check_protocol,
+        'provider_id', alternative_provider_check_provider_id
+      ) AS alternative_provider_check
     FROM measurements
     LIMIT $1
   `, [
diff --git a/publish/test/test.js b/publish/test/test.js
index fff95127..a7cfd2a5 100644
--- a/publish/test/test.js
+++ b/publish/test/test.js
@@ -164,8 +164,17 @@ describe('integration', () => {
       carTooLarge: true,
       minerId: 'f02abc',
       providerId: 'provider-pubkey',
-      round: 42
-    }]
+      round: 42,
+      alternativeProviderCheck: {
+        statusCode: 200,
+        timeout: false,
+        carTooLarge: false,
+        endAt: new Date(),
+        protocol: 'graphsync',
+        providerId: 'alt-provider-pubkey'
+      }
+    }
+    ]
 
     for (const measurement of measurements) {
       await insertMeasurement(client, measurement)