diff --git a/packages/bitcore-node/src/utils/cleanup.ts b/packages/bitcore-node/src/utils/cleanup.ts
new file mode 100644
index 00000000000..f7c8087767e
--- /dev/null
+++ b/packages/bitcore-node/src/utils/cleanup.ts
@@ -0,0 +1,37 @@
+import { BlockModel } from '../models/block';
+import { Transform } from 'stream';
+import { TransactionModel } from '../models/transaction';
+import { CoinModel } from '../models/coin';
+import { Storage } from '../services/storage';
+
+class CleanupTransform extends Transform {
+  constructor() {
+    super({ objectMode: true });
+  }
+
+  async _transform(block, _, done) {
+    const self = this;
+    const txs = await TransactionModel.collection.find({ blockHash: block.hash }).toArray();
+    for (let tx of txs) {
+      let mints = await CoinModel.collection.find({ mintTxid: tx.txid }).toArray();
+      for (let mint of mints) {
+        if (mint.mintHeight != block.height && block.height > mint.mintHeight) {
+          self.push(mint);
+        }
+      }
+    }
+    done();
+  }
+}
+
+Storage.start({})
+  .then(() => {
+    let cursor = BlockModel.collection.find({}).sort({height: -1});
+    cursor.addCursorFlag('noCursorTimeout', true);
+    cursor.pipe(new CleanupTransform())
+      .on('data', console.log)
+      .on('end', () => console.log('done'));
+  })
+  .catch(e => {
+    console.error('fatal', e);
+  });