diff --git a/src/bindings b/src/bindings
index dd2e7e9577..84483cd12a 160000
--- a/src/bindings
+++ b/src/bindings
@@ -1 +1 @@
-Subproject commit dd2e7e9577d2cb3c16187da74bf89f9b2972cd6a
+Subproject commit 84483cd12abca5a8d2b16c03083976cecced721f
diff --git a/src/examples/benchmarks/keccak-witness.ts b/src/examples/benchmarks/keccak-witness.ts
new file mode 100644
index 0000000000..cedd6982ca
--- /dev/null
+++ b/src/examples/benchmarks/keccak-witness.ts
@@ -0,0 +1,10 @@
+import { Hash, Bytes, Provable } from 'o1js';
+
+let Bytes32 = Bytes(32);
+
+console.time('keccak witness');
+Provable.runAndCheck(() => {
+  let bytes = Provable.witness(Bytes32.provable, () => Bytes32.random());
+  Hash.Keccak256.hash(bytes);
+});
+console.timeEnd('keccak witness');
diff --git a/src/lib/gadgets/bitwise.unit-test.ts b/src/lib/gadgets/bitwise.unit-test.ts
index e3444552a0..f6f186e941 100644
--- a/src/lib/gadgets/bitwise.unit-test.ts
+++ b/src/lib/gadgets/bitwise.unit-test.ts
@@ -78,6 +78,7 @@ let Bitwise = ZkProgram({
     leftShift32: {
       privateInputs: [Field],
       method(a: Field) {
+        Gadgets.rangeCheck32(a);
         return Gadgets.leftShift32(a, 12);
       },
     },
@@ -138,7 +139,9 @@ await Bitwise.compile();
   );
 });
 
-await equivalentAsync({ from: [uint(64), uint(64)], to: field }, { runs: 3 })(
+const runs = 2;
+
+await equivalentAsync({ from: [uint(64), uint(64)], to: field }, { runs })(
   (x, y) => {
     return x ^ y;
   },
@@ -148,7 +151,7 @@ await equivalentAsync({ from: [uint(64), uint(64)], to: field }, { runs: 3 })(
   }
 );
 
-await equivalentAsync({ from: [maybeField], to: field }, { runs: 3 })(
+await equivalentAsync({ from: [maybeField], to: field }, { runs })(
   (x) => {
     return Fp.not(x, 254);
   },
@@ -157,7 +160,7 @@ await equivalentAsync({ from: [maybeField], to: field }, { runs: 3 })(
     return proof.publicOutput;
   }
 );
-await equivalentAsync({ from: [maybeField], to: field }, { runs: 3 })(
+await equivalentAsync({ from: [maybeField], to: field }, { runs })(
   (x) => {
     if (x > 2n ** 254n) throw Error('Does not fit into 254 bit');
     return Fp.not(x, 254);
@@ -168,10 +171,7 @@ await equivalentAsync({ from: [maybeField], to: field }, { runs: 3 })(
   }
 );
 
-await equivalentAsync(
-  { from: [maybeField, maybeField], to: field },
-  { runs: 3 }
-)(
+await equivalentAsync({ from: [maybeField, maybeField], to: field }, { runs })(
   (x, y) => {
     if (x >= 2n ** 64n || y >= 2n ** 64n)
       throw Error('Does not fit into 64 bits');
@@ -183,7 +183,7 @@ await equivalentAsync(
   }
 );
 
-await equivalentAsync({ from: [field], to: field }, { runs: 3 })(
+await equivalentAsync({ from: [field], to: field }, { runs })(
   (x) => {
     if (x >= 2n ** 64n) throw Error('Does not fit into 64 bits');
     return Fp.rot(x, 12n, 'left');
@@ -194,7 +194,7 @@ await equivalentAsync({ from: [field], to: field }, { runs: 3 })(
   }
 );
 
-await equivalentAsync({ from: [uint(32)], to: uint(32) }, { runs: 30 })(
+await equivalentAsync({ from: [uint(32)], to: uint(32) }, { runs })(
   (x) => {
     return Fp.rot(x, 12n, 'left', 32n);
   },
@@ -204,7 +204,7 @@ await equivalentAsync({ from: [uint(32)], to: uint(32) }, { runs: 30 })(
   }
 );
 
-await equivalentAsync({ from: [field], to: field }, { runs: 3 })(
+await equivalentAsync({ from: [field], to: field }, { runs })(
   (x) => {
     if (x >= 2n ** 64n) throw Error('Does not fit into 64 bits');
     return Fp.leftShift(x, 12);
@@ -215,9 +215,9 @@ await equivalentAsync({ from: [field], to: field }, { runs: 3 })(
   }
 );
 
-await equivalentAsync({ from: [field], to: field }, { runs: 3 })(
+await equivalentAsync({ from: [field], to: field }, { runs })(
   (x) => {
-    if (x >= 2n ** 64n) throw Error('Does not fit into 64 bits');
+    if (x >= 1n << 32n) throw Error('Does not fit into 32 bits');
     return Fp.leftShift(x, 12, 32);
   },
   async (x) => {
@@ -226,7 +226,7 @@ await equivalentAsync({ from: [field], to: field }, { runs: 3 })(
   }
 );
 
-await equivalentAsync({ from: [field], to: field }, { runs: 3 })(
+await equivalentAsync({ from: [field], to: field }, { runs })(
   (x) => {
     if (x >= 2n ** 64n) throw Error('Does not fit into 64 bits');
     return Fp.rightShift(x, 12);
diff --git a/src/lib/keccak.unit-test.ts b/src/lib/keccak.unit-test.ts
index 2e4c160b3f..aad02e2342 100644
--- a/src/lib/keccak.unit-test.ts
+++ b/src/lib/keccak.unit-test.ts
@@ -1,6 +1,10 @@
 import { Keccak } from './keccak.js';
 import { ZkProgram } from './proof_system.js';
-import { equivalent, equivalentAsync } from './testing/equivalent.js';
+import {
+  equivalentProvable,
+  equivalent,
+  equivalentAsync,
+} from './testing/equivalent.js';
 import {
   keccak_224,
   keccak_256,
@@ -47,13 +51,13 @@ for (let length of lengths) {
   let inputBytes = bytes(preimageLength);
   let outputBytes = bytes(length / 8);
 
-  equivalent({ from: [inputBytes], to: outputBytes, verbose: true })(
+  equivalentProvable({ from: [inputBytes], to: outputBytes, verbose: true })(
     testImplementations.sha3[length],
     (x) => Keccak.nistSha3(length, x),
     `sha3 ${length}`
   );
 
-  equivalent({ from: [inputBytes], to: outputBytes, verbose: true })(
+  equivalentProvable({ from: [inputBytes], to: outputBytes, verbose: true })(
     testImplementations.preNist[length],
     (x) => Keccak.preNist(length, x),
     `keccak ${length}`
diff --git a/src/lib/provable-types/bytes.ts b/src/lib/provable-types/bytes.ts
index 992e10bd1f..9bde301e69 100644
--- a/src/lib/provable-types/bytes.ts
+++ b/src/lib/provable-types/bytes.ts
@@ -4,6 +4,7 @@ import { assert } from '../gadgets/common.js';
 import { chunkString } from '../util/arrays.js';
 import { Provable } from '../provable.js';
 import { UInt8 } from '../int.js';
+import { randomBytes } from '../../bindings/crypto/random.js';
 
 export { Bytes, createBytes, FlexibleBytes };
 
@@ -64,6 +65,14 @@ class Bytes {
     return this.from(bytes);
   }
 
+  /**
+   * Create random {@link Bytes} using secure builtin randomness.
+   */
+  static random() {
+    let bytes = randomBytes(this.size);
+    return this.from(bytes);
+  }
+
   /**
    * Create {@link Bytes} from a hex string.
    *
diff --git a/src/mina b/src/mina
index cb151f6a7d..2a968c8347 160000
--- a/src/mina
+++ b/src/mina
@@ -1 +1 @@
-Subproject commit cb151f6a7d34913090b9c19b79f8872389be5c04
+Subproject commit 2a968c83477ed9f9e3b30a02cc357e541b76dcac