diff --git a/.circleci/config.yml b/.circleci/config.yml
index 353142280e25..9d0944d8a650 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -68,7 +68,7 @@ jobs:
       - *setup_env
       - run:
           name: "Build"
-          command: cond_spot_run_build circuits-wasm-linux-clang 64
+          command: cond_spot_run_build aztec3-circuits-wasm-linux-clang 64
   yarn-project-base:
     machine:
       image: ubuntu-2004:202010-01
@@ -135,6 +135,17 @@ jobs:
           name: "Build and test"
           command: build world-state
 
+  merkle-tree:
+    machine:
+      image: ubuntu-2004:202010-01
+    resource_class: large
+    steps:
+      - *checkout
+      - *setup_env
+      - run:
+          name: "Build and test"
+          command: build merkle-tree
+
   end-to-end:
     machine:
       image: ubuntu-2004:202010-01
@@ -208,4 +219,5 @@ workflows:
           <<: *defaults
       - e2e-deploy-contract: *e2e_test
       - world-state: *yarn_project
+      - merkle-tree: *yarn_project
       - noir-contracts: *yarn_project
diff --git a/build_manifest.json b/build_manifest.json
index eabc199c4c4b..e1c96571cd33 100644
--- a/build_manifest.json
+++ b/build_manifest.json
@@ -1,5 +1,5 @@
 {
-  "circuits-wasm-linux-clang": {
+  "aztec3-circuits-wasm-linux-clang": {
     "buildDir": "circuits/cpp",
     "dockerfile": "dockerfiles/Dockerfile.wasm-linux-clang",
     "rebuildPatterns": ["^circuits/"],
@@ -73,11 +73,18 @@
     "rebuildPatterns": ["^yarn-project/aztec.js/"],
     "dependencies": ["aztec-rpc"]
   },
+  "barretenberg.js": {
+    "buildDir": "yarn-project",
+    "projectDir": "yarn-project/barretenberg.js",
+    "dockerfile": "aztec.js/Dockerfile",
+    "rebuildPatterns": ["^yarn-project/barretenberg.js/"],
+    "dependencies": []
+  },
   "end-to-end": {
     "buildDir": "yarn-project",
     "projectDir": "yarn-project/end-to-end",
     "dockerfile": "end-to-end/Dockerfile",
-    "rebuildPatterns": ["^yarn-project/end-to-end/"],
+    "rebuildPatterns": ["^yarn-project/end-to-end/"],	
     "dependencies": ["aztec.js", "noir-contracts"]
   },
   "ethereum.js": {
@@ -120,7 +127,7 @@
     "projectDir": "yarn-project/merkle-tree",
     "dockerfile": "merkle-tree/Dockerfile",
     "rebuildPatterns": ["^yarn-project/merkle-tree/"],
-    "dependencies": ["foundation"]
+    "dependencies": ["foundation", "barretenberg.js"]
   },
   "noir-contracts": {
     "buildDir": "yarn-project",
diff --git a/circuits b/circuits
index 7679e98cb4e5..73c22b36c019 160000
--- a/circuits
+++ b/circuits
@@ -1 +1 @@
-Subproject commit 7679e98cb4e5af7be6855fb39eb7f37e26ebe717
+Subproject commit 73c22b36c0190e04393093e8d542551fa7c5ba17
diff --git a/yarn-project/end-to-end/Dockerfile b/yarn-project/end-to-end/Dockerfile
index 6023c41de79b..a70550b2a9ff 100644
--- a/yarn-project/end-to-end/Dockerfile
+++ b/yarn-project/end-to-end/Dockerfile
@@ -1,10 +1,16 @@
 FROM 278380418400.dkr.ecr.eu-west-2.amazonaws.com/yarn-project-base AS builder
 
 COPY . .
+RUN cd merkle-tree && yarn build
 RUN cd aztec.js && yarn build
 RUN cd noir-contracts && yarn build
 WORKDIR /usr/src/yarn-project/end-to-end
-RUN yarn formatting
+RUN yarn build
+# RUN yarn formatting
+
+# copy bb.js wasm binaries
+WORKDIR /usr/src/yarn-project/barretenberg.js
+RUN cp /usr/src/aztec3-circuits/cpp/build-wasm/bin/aztec3-circuits.wasm dest/wasm/barretenberg.wasm
 
 # copy bb.js wasm binaries
 WORKDIR /usr/src/yarn-project/barretenberg.js
@@ -17,5 +23,7 @@ RUN yarn workspaces focus --production > /dev/null
 FROM node:18-alpine
 RUN apk update && apk add --no-cache curl jq bash
 COPY --from=builder /usr/src/yarn-project /usr/src/yarn-project
+WORKDIR /usr/src/yarn-project/
+RUN yarn install
 WORKDIR /usr/src/yarn-project/end-to-end
 ENTRYPOINT ["yarn", "test"]
\ No newline at end of file
diff --git a/yarn-project/merkle-tree/src/indexed_tree/indexed_tree.ts b/yarn-project/merkle-tree/src/indexed_tree/indexed_tree.ts
index e1ea8b7a43e9..43c47381cc0c 100644
--- a/yarn-project/merkle-tree/src/indexed_tree/indexed_tree.ts
+++ b/yarn-project/merkle-tree/src/indexed_tree/indexed_tree.ts
@@ -309,9 +309,9 @@ export class IndexedTree implements MerkleTree {
       : undefined;
   }
 
-  public async getLeafValue(index: bigint): Promise<Buffer | undefined> {
+  public getLeafValue(index: bigint): Promise<Buffer | undefined> {
     const leaf = this.getLatestLeafDataCopy(Number(index));
-    if (!leaf) return undefined;
-    return toBufferBE(leaf.value, 32);
+    if (!leaf) return Promise.resolve(undefined);
+    return Promise.resolve(toBufferBE(leaf.value, 32));
   }
 }
diff --git a/yarn-project/merkle-tree/src/standard_tree/standard_tree.ts b/yarn-project/merkle-tree/src/standard_tree/standard_tree.ts
index 1aaa45290ab2..d58120f78746 100644
--- a/yarn-project/merkle-tree/src/standard_tree/standard_tree.ts
+++ b/yarn-project/merkle-tree/src/standard_tree/standard_tree.ts
@@ -214,8 +214,8 @@ export class StandardMerkleTree implements MerkleTree {
     return Promise.resolve();
   }
 
-  public async getLeafValue(index: bigint): Promise<Buffer | undefined> {
-    return this.getLatestValueAtIndex(this.depth, index);
+  public getLeafValue(index: bigint): Promise<Buffer | undefined> {
+    return Promise.resolve(this.getLatestValueAtIndex(this.depth, index));
   }
 
   /**
diff --git a/yarn-project/yarn-project-base/Dockerfile b/yarn-project/yarn-project-base/Dockerfile
index ede63ef65322..6a1cd5944a47 100644
--- a/yarn-project/yarn-project-base/Dockerfile
+++ b/yarn-project/yarn-project-base/Dockerfile
@@ -1,5 +1,5 @@
 # FROM 278380418400.dkr.ecr.eu-west-2.amazonaws.com/circuits-x86_64-linux-clang
-FROM 278380418400.dkr.ecr.eu-west-2.amazonaws.com/circuits-wasm-linux-clang
+FROM 278380418400.dkr.ecr.eu-west-2.amazonaws.com/aztec3-circuits-wasm-linux-clang
 # FROM 278380418400.dkr.ecr.eu-west-2.amazonaws.com/l1-contracts
 
 FROM node:18-alpine
diff --git a/yarn-project/yarn.lock b/yarn-project/yarn.lock
index 7b524462b5df..b15f449a7ae0 100644
--- a/yarn-project/yarn.lock
+++ b/yarn-project/yarn.lock
@@ -1137,33 +1137,33 @@ __metadata:
   linkType: hard
 
 "@eslint-community/regexpp@npm:^4.4.0":
-  version: 4.4.1
-  resolution: "@eslint-community/regexpp@npm:4.4.1"
-  checksum: db97d8d08e784147b55ab0dda5892503c1a0eebad94d1c4646d89a94f02ca70b25f05d8e021fc05a075e7eb312e03e21f63d84f0b327719f8cf3bb64e66917cb
+  version: 4.5.0
+  resolution: "@eslint-community/regexpp@npm:4.5.0"
+  checksum: 99c01335947dbd7f2129e954413067e217ccaa4e219fe0917b7d2bd96135789384b8fedbfb8eb09584d5130b27a7b876a7150ab7376f51b3a0c377d5ce026a10
   languageName: node
   linkType: hard
 
-"@eslint/eslintrc@npm:^2.0.1":
-  version: 2.0.1
-  resolution: "@eslint/eslintrc@npm:2.0.1"
+"@eslint/eslintrc@npm:^2.0.2":
+  version: 2.0.2
+  resolution: "@eslint/eslintrc@npm:2.0.2"
   dependencies:
     ajv: ^6.12.4
     debug: ^4.3.2
-    espree: ^9.5.0
+    espree: ^9.5.1
     globals: ^13.19.0
     ignore: ^5.2.0
     import-fresh: ^3.2.1
     js-yaml: ^4.1.0
     minimatch: ^3.1.2
     strip-json-comments: ^3.1.1
-  checksum: 56b9192a687a450db53a7b883daf9f0f447c43b3510189cf88808a7a2467c2a302a42a50f184cc6d5a9faf3d1df890a2ef0fd0d60b751f32a3e9dfea717c6b48
+  checksum: cfcf5e12c7b2c4476482e7f12434e76eae16fcd163ee627309adb10b761e5caa4a4e52ed7be464423320ff3d11eca5b50de5bf8be3e25834222470835dd5c801
   languageName: node
   linkType: hard
 
-"@eslint/js@npm:8.36.0":
-  version: 8.36.0
-  resolution: "@eslint/js@npm:8.36.0"
-  checksum: b7d6b84b823c8c7784be390741196617565527b1f7c0977fde9455bfb57fd88f81c074a03dd878757d2c33fa29f24291e9ecbc1425710f067917324b55e1bf3a
+"@eslint/js@npm:8.37.0":
+  version: 8.37.0
+  resolution: "@eslint/js@npm:8.37.0"
+  checksum: 7a07fb085c94ce1538949012c292fd3a6cd734f149bc03af6157dfbd8a7477678899ef57b4a27e15b36470a997389ad79a0533d5880c71e67720ae1a7de7c62d
   languageName: node
   linkType: hard
 
@@ -2318,9 +2318,9 @@ __metadata:
   linkType: hard
 
 "@types/node@npm:*, @types/node@npm:^18.14.6, @types/node@npm:^18.15.0, @types/node@npm:^18.15.2, @types/node@npm:^18.15.3, @types/node@npm:^18.7.23":
-  version: 18.15.10
-  resolution: "@types/node@npm:18.15.10"
-  checksum: 9aeae0b683eda82892def5315812bdee3f1a28c4898b7e70f8e2514564538b16c4dccbe8339c1266f8fc1d707a48f152689264a854f5ebc2eba5011e793612d9
+  version: 18.15.11
+  resolution: "@types/node@npm:18.15.11"
+  checksum: 977b4ad04708897ff0eb049ecf82246d210939c82461922d20f7d2dcfd81bbc661582ba3af28869210f7e8b1934529dcd46bff7d448551400f9d48b9d3bddec3
   languageName: node
   linkType: hard
 
@@ -3710,9 +3710,9 @@ __metadata:
   linkType: hard
 
 "electron-to-chromium@npm:^1.4.284":
-  version: 1.4.341
-  resolution: "electron-to-chromium@npm:1.4.341"
-  checksum: b97377e4e622266953da2c92276b9c0a948ab7e8a0a9c9947da340269f8eb959b8678f76158b78b473a56912c697d89e37a93d82b4d2db84f622e9be7850a540
+  version: 1.4.342
+  resolution: "electron-to-chromium@npm:1.4.342"
+  checksum: 61ecf9f3ea65a6044cdcea092dd56b42d0961fdb8fb3942ba808c6aa6ab3213d3218e599748d6d6ae8b43ddc9f76f428af0b96eaee2f0b4b2f0195c643f36f3d
   languageName: node
   linkType: hard
 
@@ -3961,7 +3961,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"eslint-visitor-keys@npm:^3.3.0":
+"eslint-visitor-keys@npm:^3.3.0, eslint-visitor-keys@npm:^3.4.0":
   version: 3.4.0
   resolution: "eslint-visitor-keys@npm:3.4.0"
   checksum: 33159169462d3989321a1ec1e9aaaf6a24cc403d5d347e9886d1b5bfe18ffa1be73bdc6203143a28a606b142b1af49787f33cff0d6d0813eb5f2e8d2e1a6043c
@@ -3969,13 +3969,13 @@ __metadata:
   linkType: hard
 
 "eslint@npm:^8.21.0, eslint@npm:^8.35.0":
-  version: 8.36.0
-  resolution: "eslint@npm:8.36.0"
+  version: 8.37.0
+  resolution: "eslint@npm:8.37.0"
   dependencies:
     "@eslint-community/eslint-utils": ^4.2.0
     "@eslint-community/regexpp": ^4.4.0
-    "@eslint/eslintrc": ^2.0.1
-    "@eslint/js": 8.36.0
+    "@eslint/eslintrc": ^2.0.2
+    "@eslint/js": 8.37.0
     "@humanwhocodes/config-array": ^0.11.8
     "@humanwhocodes/module-importer": ^1.0.1
     "@nodelib/fs.walk": ^1.2.8
@@ -3986,8 +3986,8 @@ __metadata:
     doctrine: ^3.0.0
     escape-string-regexp: ^4.0.0
     eslint-scope: ^7.1.1
-    eslint-visitor-keys: ^3.3.0
-    espree: ^9.5.0
+    eslint-visitor-keys: ^3.4.0
+    espree: ^9.5.1
     esquery: ^1.4.2
     esutils: ^2.0.2
     fast-deep-equal: ^3.1.3
@@ -4014,18 +4014,18 @@ __metadata:
     text-table: ^0.2.0
   bin:
     eslint: bin/eslint.js
-  checksum: e9a961fc3b3de5cff5a1cb2c92eeffaa7e155a715489e30b3e1e76f186bd1255e0481e09564f2094733c0b1dbd3453499fb72ae7c043c83156e11e6d965b2304
+  checksum: 80f3d5cdce2d671f4794e392d234a78d039c347673defb0596268bd481e8f30a53d93c01ff4f66a546c87d97ab4122c0e9cafe1371f87cb03cee6b7d5aa97595
   languageName: node
   linkType: hard
 
-"espree@npm:^9.5.0":
-  version: 9.5.0
-  resolution: "espree@npm:9.5.0"
+"espree@npm:^9.5.1":
+  version: 9.5.1
+  resolution: "espree@npm:9.5.1"
   dependencies:
     acorn: ^8.8.0
     acorn-jsx: ^5.3.2
-    eslint-visitor-keys: ^3.3.0
-  checksum: a7f110aefb6407e0d3237aa635ab3cea87106ae63748dd23c67031afccc640d04c4209fca2daf16e2233c82efb505faead0fb84097478fd9cc6e8f8dd80bf99d
+    eslint-visitor-keys: ^3.4.0
+  checksum: cdf6e43540433d917c4f2ee087c6e987b2063baa85a1d9cdaf51533d78275ebd5910c42154e7baf8e3e89804b386da0a2f7fad2264d8f04420e7506bf87b3b88
   languageName: node
   linkType: hard