diff --git a/src/api/routes/inscriptions.ts b/src/api/routes/inscriptions.ts
index 66d779d8..0ebfe1ad 100644
--- a/src/api/routes/inscriptions.ts
+++ b/src/api/routes/inscriptions.ts
@@ -23,6 +23,7 @@ import {
   InscriptionIdParamCType,
   BlockParam,
   BlockHeightParam,
+  TimestampParam,
 } from '../types';
 import { handleChainTipCache, handleInscriptionCache } from '../util/cache';
 import {
@@ -63,6 +64,8 @@ const IndexRoutes: FastifyPluginCallback<Record<never, never>, Server, TypeBoxTy
           genesis_block: Type.Optional(BlockParam),
           from_genesis_block_height: Type.Optional(BlockHeightParam),
           to_genesis_block_height: Type.Optional(BlockHeightParam),
+          from_genesis_timestamp: Type.Optional(TimestampParam),
+          to_genesis_timestamp: Type.Optional(TimestampParam),
           output: Type.Optional(OutputParam),
           address: Type.Optional(AddressParam),
           mime_type: Type.Optional(MimeTypesParam),
@@ -87,6 +90,8 @@ const IndexRoutes: FastifyPluginCallback<Record<never, never>, Server, TypeBoxTy
         ...blockParam(request.query.genesis_block, 'genesis_block'),
         ...blockParam(request.query.from_genesis_block_height, 'from_genesis_block'),
         ...blockParam(request.query.to_genesis_block_height, 'to_genesis_block'),
+        from_genesis_timestamp: request.query.from_genesis_timestamp,
+        to_genesis_timestamp: request.query.to_genesis_timestamp,
         output: request.query.output,
         address: request.query.address,
         mime_type: request.query.mime_type,
diff --git a/src/api/types.ts b/src/api/types.ts
index a51aad96..002e2904 100644
--- a/src/api/types.ts
+++ b/src/api/types.ts
@@ -79,6 +79,12 @@ export const SatoshiRaritiesParam = Type.Array(
   }
 );
 
+export const TimestampParam = Type.Integer({
+  title: 'Timestamp',
+  description: 'Block UNIX epoch timestamp (milliseconds)',
+  examples: [1677731361],
+});
+
 export const OutputParam = Type.RegEx(/^[a-fA-F0-9]{64}:[0-9]+$/, {
   title: 'Transaction Output',
   description: 'An UTXO for a Bitcoin transaction',
diff --git a/src/pg/pg-store.ts b/src/pg/pg-store.ts
index 0960222a..d11df3cf 100644
--- a/src/pg/pg-store.ts
+++ b/src/pg/pg-store.ts
@@ -160,6 +160,8 @@ export class PgStore extends BasePgStore {
     genesis_block_hash?: string;
     from_genesis_block_height?: number;
     to_genesis_block_height?: number;
+    from_genesis_timestamp?: number;
+    to_genesis_timestamp?: number;
     number?: number;
     address?: string;
     mime_type?: string[];
@@ -217,6 +219,16 @@ export class PgStore extends BasePgStore {
             ? this.sql`AND gen.block_height <= ${args.to_genesis_block_height}`
             : this.sql``
         }
+        ${
+          args.from_genesis_timestamp
+            ? this.sql`AND gen.timestamp >= to_timestamp(${args.from_genesis_timestamp})`
+            : this.sql``
+        }
+        ${
+          args.to_genesis_timestamp
+            ? this.sql`AND gen.timestamp <= to_timestamp(${args.to_genesis_timestamp})`
+            : this.sql``
+        }
         ${args.address ? this.sql`AND loc.address = ${args.address}` : this.sql``}
         ${
           args.mime_type?.length
diff --git a/tests/inscriptions.test.ts b/tests/inscriptions.test.ts
index 9e578240..8e37f16e 100644
--- a/tests/inscriptions.test.ts
+++ b/tests/inscriptions.test.ts
@@ -440,6 +440,79 @@ describe('/inscriptions', () => {
     );
   });
 
+  test('index filtered by timestamp range', async () => {
+    await db.insertInscriptionGenesis({
+      inscription: {
+        genesis_id: '9f4a9b73b0713c5da01c0a47f97c6c001af9028d6bdd9e264dfacbc4e6790201i0',
+        mime_type: 'text/plain',
+        content_type: 'text/plain;charset=utf-8',
+        content_length: 5,
+        number: 7,
+        content: '0x48656C6C6F',
+        fee: 705n,
+      },
+      location: {
+        inscription_id: 0,
+        block_height: 778575,
+        block_hash: '00000000000000000002a90330a99f67e3f01eb2ce070b45930581e82fb7a91d',
+        tx_id: '9f4a9b73b0713c5da01c0a47f97c6c001af9028d6bdd9e264dfacbc4e6790201',
+        address: 'bc1pscktlmn99gyzlvymvrezh6vwd0l4kg06tg5rvssw0czg8873gz5sdkteqj',
+        output: '9f4a9b73b0713c5da01c0a47f97c6c001af9028d6bdd9e264dfacbc4e6790201:0',
+        offset: 0n,
+        value: 10000n,
+        timestamp: 1677731361,
+        sat_ordinal: 257418248345364n,
+        sat_rarity: 'common',
+        genesis: true,
+        current: true,
+      },
+    });
+    await db.insertInscriptionGenesis({
+      inscription: {
+        genesis_id: '38c46a8bf7ec90bc7f6b797e7dc84baa97f4e5fd4286b92fe1b50176d03b18dci0',
+        mime_type: 'image/png',
+        content_type: 'image/png',
+        content_length: 5,
+        number: 7,
+        content: '0x48656C6C6F',
+        fee: 2805n,
+      },
+      location: {
+        inscription_id: 0,
+        block_height: 775617,
+        block_hash: '00000000000000000002a90330a99f67e3f01eb2ce070b45930581e82fb7a91d',
+        tx_id: '38c46a8bf7ec90bc7f6b797e7dc84baa97f4e5fd4286b92fe1b50176d03b18dc',
+        address: 'bc1p3cyx5e2hgh53w7kpxcvm8s4kkega9gv5wfw7c4qxsvxl0u8x834qf0u2td',
+        output: '38c46a8bf7ec90bc7f6b797e7dc84baa97f4e5fd4286b92fe1b50176d03b18dc:0',
+        offset: 0n,
+        value: 10000n,
+        timestamp: 1675312161,
+        sat_ordinal: 257418248345364n,
+        sat_rarity: 'epic',
+        genesis: true,
+        current: true,
+      },
+    });
+
+    const response2 = await fastify.inject({
+      method: 'GET',
+      url: '/ordinals/v1/inscriptions?from_genesis_timestamp=1675571361',
+    });
+    expect(response2.statusCode).toBe(200);
+    const responseJson2 = response2.json();
+    expect(responseJson2.total).toBe(1);
+    expect(responseJson2.results[0].genesis_timestamp).toBe(1677731361000);
+
+    const response3 = await fastify.inject({
+      method: 'GET',
+      url: '/ordinals/v1/inscriptions?to_genesis_timestamp=1675571361',
+    });
+    expect(response3.statusCode).toBe(200);
+    const responseJson3 = response3.json();
+    expect(responseJson3.total).toBe(1);
+    expect(responseJson3.results[0].genesis_timestamp).toBe(1675312161000);
+  });
+
   test('index filtered by output', async () => {
     await db.insertInscriptionGenesis({
       inscription: {