diff --git a/packages/ditto/utils/cashu.test.ts b/packages/ditto/utils/cashu.test.ts
index 9a0621e8..14f14900 100644
--- a/packages/ditto/utils/cashu.test.ts
+++ b/packages/ditto/utils/cashu.test.ts
@@ -5,7 +5,7 @@ import { assertEquals } from '@std/assert';
 
 import { createTestDB, genEvent } from '@/test.ts';
 
-import { validateAndParseWallet } from '@/utils/cashu.ts';
+import { organizeProofs, validateAndParseWallet } from '@/utils/cashu.ts';
 
 Deno.test('validateAndParseWallet function returns valid data', async () => {
   await using db = await createTestDB({ pure: true });
@@ -51,3 +51,119 @@ Deno.test('validateAndParseWallet function returns valid data', async () => {
     mints: ['https://mint.soul.com'],
   });
 });
+
+Deno.test('organizeProofs function is working', async () => {
+  await using db = await createTestDB({ pure: true });
+  const store = db.store;
+
+  const sk = generateSecretKey();
+  const signer = new NSecSigner(sk);
+  const pubkey = await signer.getPublicKey();
+
+  const event1 = genEvent({
+    kind: 7375,
+    content: await signer.nip44.encrypt(
+      pubkey,
+      JSON.stringify({
+        mint: 'https://mint.soul.com',
+        proofs: [
+          {
+            id: '005c2502034d4f12',
+            amount: 25,
+            secret: 'z+zyxAVLRqN9lEjxuNPSyRJzEstbl69Jc1vtimvtkPg=',
+            C: '0241d98a8197ef238a192d47edf191a9de78b657308937b4f7dd0aa53beae72c46',
+          },
+          {
+            id: '005c2502034d4f12',
+            amount: 25,
+            secret: 'z+zyxAVLRqN9lEjxuNPSyRJzEstbl69Jc1vtimvtkPg=',
+            C: '0241d98a8197ef238a192d47edf191a9de78b657308937b4f7dd0aa53beae72c46',
+          },
+          {
+            id: '005c2502034d4f12',
+            amount: 25,
+            secret: 'z+zyxAVLRqN9lEjxuNPSyRJzEstbl69Jc1vtimvtkPg=',
+            C: '0241d98a8197ef238a192d47edf191a9de78b657308937b4f7dd0aa53beae72c46',
+          },
+          {
+            id: '005c2502034d4f12',
+            amount: 25,
+            secret: 'z+zyxAVLRqN9lEjxuNPSyRJzEstbl69Jc1vtimvtkPg=',
+            C: '0241d98a8197ef238a192d47edf191a9de78b657308937b4f7dd0aa53beae72c46',
+          },
+        ],
+        del: [],
+      }),
+    ),
+  }, sk);
+  await db.store.event(event1);
+
+  const proof1 = {
+    'id': '004f7adf2a04356c',
+    'amount': 1,
+    'secret': '6780378b186cf7ada639ce4807803ad5e4a71217688430512f35074f9bca99c0',
+    'C': '03f0dd8df04427c8c53e4ae9ce8eb91c4880203d6236d1d745c788a5d7a47aaff3',
+    'dleq': {
+      'e': 'bd22fcdb7ede1edb52b9b8c6e1194939112928e7b4fc0176325e7671fb2bd351',
+      's': 'a9ad015571a0e538d62966a16d2facf806fb956c746a3dfa41fa689486431c67',
+      'r': 'b283980e30bf5a31a45e5e296e93ae9f20bf3a140c884b3b4cd952dbecc521df',
+    },
+  };
+  const token1 = JSON.stringify({
+    mint: 'https://mint-fashion.com',
+    proofs: [proof1],
+    del: [],
+  });
+
+  const event2 = genEvent({
+    kind: 7375,
+    content: await signer.nip44.encrypt(
+      pubkey,
+      token1,
+    ),
+  }, sk);
+  await db.store.event(event2);
+
+  const proof2 = {
+    'id': '004f7adf2a04356c',
+    'amount': 123,
+    'secret': '6780378b186cf7ada639ce4807803ad5e4a71217688430512f35074f9bca99c0',
+    'C': '03f0dd8df04427c8c53e4ae9ce8eb91c4880203d6236d1d745c788a5d7a47aaff3',
+    'dleq': {
+      'e': 'bd22fcdb7ede1edb52b9b8c6e1194939112928e7b4fc0176325e7671fb2bd351',
+      's': 'a9ad015571a0e538d62966a16d2facf806fb956c746a3dfa41fa689486431c67',
+      'r': 'b283980e30bf5a31a45e5e296e93ae9f20bf3a140c884b3b4cd952dbecc521df',
+    },
+  };
+
+  const token2 = JSON.stringify({
+    mint: 'https://mint-fashion.com',
+    proofs: [proof2],
+    del: [],
+  });
+
+  const event3 = genEvent({
+    kind: 7375,
+    content: await signer.nip44.encrypt(
+      pubkey,
+      token2,
+    ),
+  }, sk);
+  await db.store.event(event3);
+
+  const unspentProofs = await store.query([{ kinds: [7375], authors: [pubkey] }]);
+
+  const organizedProofs = await organizeProofs(unspentProofs, signer);
+
+  assertEquals(organizedProofs, {
+    'https://mint.soul.com': {
+      totalBalance: 100,
+      [event1.id]: { event: event1, balance: 100 },
+    },
+    'https://mint-fashion.com': {
+      totalBalance: 124,
+      [event2.id]: { event: event2, balance: 1 },
+      [event3.id]: { event: event3, balance: 123 },
+    },
+  });
+});
diff --git a/packages/ditto/utils/cashu.ts b/packages/ditto/utils/cashu.ts
index 05a88272..625c86f3 100644
--- a/packages/ditto/utils/cashu.ts
+++ b/packages/ditto/utils/cashu.ts
@@ -7,6 +7,7 @@ import { z } from 'zod';
 
 import { errorJson } from '@/utils/log.ts';
 import { isNostrId } from '@/utils.ts';
+import { tokenEventSchema } from '@/schemas/cashu.ts';
 
 type Data = {
   wallet: NostrEvent;
@@ -99,4 +100,43 @@ async function validateAndParseWallet(
   return { data: { wallet, nutzapInfo, privkey, p2pk, mints }, error: null };
 }
 
-export { validateAndParseWallet };
+type OrganizedProofs = {
+  [mintUrl: string]: {
+    /** Total balance in this mint */
+    totalBalance: number;
+    /** Event id */
+    [eventId: string]: {
+      event: NostrEvent;
+      /** Total balance in this event */
+      balance: number;
+    } | number;
+  };
+};
+async function organizeProofs(
+  events: NostrEvent[],
+  signer: SetRequired<NostrSigner, 'nip44'>,
+): Promise<OrganizedProofs> {
+  const organizedProofs: OrganizedProofs = {};
+  const pubkey = await signer.getPublicKey();
+
+  for (const event of events) {
+    const decryptedContent = await signer.nip44.decrypt(pubkey, event.content);
+    const { data: token, success } = n.json().pipe(tokenEventSchema).safeParse(decryptedContent);
+    if (!success) {
+      continue;
+    }
+    const { mint, proofs } = token;
+
+    const balance = proofs.reduce((prev, current) => prev + current.amount, 0);
+
+    if (!organizedProofs[mint]) {
+      organizedProofs[mint] = { totalBalance: 0 };
+    }
+
+    organizedProofs[mint] = { ...organizedProofs[mint], [event.id]: { event, balance } };
+    organizedProofs[mint].totalBalance += balance;
+  }
+  return organizedProofs;
+}
+
+export { organizeProofs, validateAndParseWallet };