Resolve "WIP: UTXO Selection and Storage"

examples/node/benchmark-sha256.js

@@ -0,0 +1,15 @@
+import { Bytes, Crypto } from '@xo/primitives';
+
+const payload = Bytes.fromHex(
+  '00112233445566778899aabbccddeeff00112233445566778899aabbccddeeff',
+);
+
+console.time('sha256');
+
+for (let i = 0; i < 10_000; i++) {
+  Crypto.sha256(payload.toBytes());
+}
+
+// NOTE: Around 100ms for 10,000 SHA256's on my machine.
+//       Not too bad, but might still be worth avoiding if trivial.
+console.timeEnd('sha256');