diff --git a/.circleci/config.yml b/.circleci/config.yml
deleted file mode 100644
index 53bc7177463..00000000000
--- a/.circleci/config.yml
+++ /dev/null
@@ -1,200 +0,0 @@
-version: 2.1 # needed for executors
-
-executors:
-  rskj-executor:
-    docker:
-      - image: openjdk:8-jdk
-    environment:
-      _JAVA_OPTIONS: "-Xmx3G -Xms2G"
-    working_directory: /app
-    resource_class: medium+
-  sonarqube-executor:
-    docker:
-      - image: eclipse-temurin:17-jdk
-    working_directory: /app
-  mit-executor:
-    docker:
-      - image: alpine:3.10
-
-jobs:
-  build:
-    executor: rskj-executor
-    steps:
-      - checkout
-      - run:
-          name: Setup
-          command: apt update -y && apt install -y gnupg2
-      - run:
-          name: Verify files
-          command: |
-            curl -sSL https://secchannel.rsk.co/SUPPORT.asc | gpg2 --import -
-            gpg2 --verify SHA256SUMS.asc && sha256sum --check SHA256SUMS.asc
-      - run:
-          name: Build
-          command: |
-            ./configure.sh
-            ./gradlew --no-daemon dependencies
-            ./gradlew --no-daemon --stacktrace build -x test
-      - persist_to_workspace:
-          root: .
-          paths:
-            - .
-  sonarqube:
-    executor: sonarqube-executor
-    steps:
-      - attach_workspace:
-          at: /app
-      - run:
-          name: Run SonarQube analysis
-          command: |
-            apt-get update && apt-get install -yqq git
-            extra_flags=""
-            if [ -n "$CIRCLE_PULL_REQUEST" ]; then
-              # https://community.sonarsource.com/t/no-code-or-issue-found-in-pull-request-decorations-github-circleci/8496
-              git branch -f master origin/master
-              # extract PR number, as PR URLs are in the form
-              # https://github.com/$user/$repo/pull/$pr_number
-              pr_number=${CIRCLE_PULL_REQUEST##*/}
-              extra_flags="-Dsonar.pullrequest.base=master
-                -Dsonar.pullrequest.branch=$CIRCLE_BRANCH
-                -Dsonar.pullrequest.key=$pr_number"
-            else
-              extra_flags="-Dsonar.branch.name=master"
-            fi
-            ./gradlew sonarqube --no-daemon -x build -x test \
-                $extra_flags \
-                -Dsonar.organization=rsksmart \
-                -Dsonar.host.url="$SONAR_URL" \
-                -Dsonar.login="$SONAR_TOKEN"
-  rskj-unit-tests:
-    executor: rskj-executor
-    steps:
-      - attach_workspace:
-          at: /app
-      - run:
-          name: rskj tests
-          command: ./gradlew --no-daemon --stacktrace test
-      - run:
-          name: Save test results
-          command: |
-            mkdir -p ~/junit/
-            find rskj-core/build/test-results -type f -name "*.xml" \
-                -exec cp {} ~/junit/ \;
-          when: always
-      - store_test_results:
-          path: ~/junit
-      - store_artifacts:
-          path: ~/junit
-      - persist_to_workspace:
-          root: .
-          paths:
-            - .
-  rskj-int-tests:
-    executor: rskj-executor
-    steps:
-      - attach_workspace:
-          at: /app
-      - run:
-          name: rskj integration tests
-          command: ./gradlew --no-daemon --stacktrace integrationTest
-      - run:
-          name: Save test results
-          command: |
-            mkdir -p ~/junit/
-            find rskj-core/build/test-results -type f -name "*.xml" \
-                -exec cp {} ~/junit/ \;
-          when: always
-      - store_test_results:
-          path: ~/junit
-      - store_artifacts:
-          path: ~/junit
-      - persist_to_workspace:
-          root: .
-          paths:
-            - .
-  mining-tests:
-    executor: mit-executor
-    steps:
-      - run:
-          name: Setup
-          command: apk add --no-cache curl jq
-      - run:
-          name: Mining integration tests
-          command: |
-            wait_for_completion() {
-              # inspired from https://discuss.circleci.com/t/waiting-for-build-to-complete-when-invoked-via-http-api/14989
-              build_number=$1
-              poll_interval=60
-
-              i=0
-              max_count=20
-              while [ $i -lt $max_count ]; do
-                # output to avoid CircleCI considering the job stuck
-                res=$(curl -Ssfu "$CIRCLE_INTEGRATIONS_TOKENS:" \
-                    "https://circleci.com/api/v1.1/project/github/$MIT_ORGANIZATION/$MIT_PROJECT/$build_number" \
-                    | jq -r '[.lifecycle, .outcome] | @tsv')
-                IFS="	" set -- $res
-                lifecycle=${1:-}
-                outcome=${2:-}
-                if [ "$lifecycle" = "queued" ]; then
-                  printf "Build is enqueued. Waiting...\n"
-                  # don't increment $i
-                else
-                  printf "[%02u/%02u] Waiting for build %s ...\n" \
-                      "$i" "$max_count" "$build_url"
-                  i=$(($i + 1))
-                fi
-                if [ "$lifecycle" = "finished" ]; then
-                  printf "Build %u finished. Outcome: \"%s\".\n" \
-                      "$build_number" "$outcome"
-                  # return success iff job outcome is "success"
-                  test "$outcome" = "success"
-                  return $?
-                fi
-
-                sleep $poll_interval
-              done
-              return 1
-            }
-
-            json_payload='{
-              "build_parameters": {
-                "RSKJ_CIRCLE_BRANCH": "'$CIRCLE_BRANCH'",
-                "RSKJ_CIRCLE_USERNAME": "'$CIRCLE_PROJECT_USERNAME'",
-                "RSKJ_CIRCLE_REPONAME": "'$CIRCLE_PROJECT_REPONAME'",
-                "RSKJ_PR_NUMBER": "'$CIRCLE_PR_NUMBER'",
-                "RSKJ_CIRCLE_SHA1": "'$CIRCLE_SHA1'"
-              }
-            }'
-            res=$(curl -Ssf -u "$CIRCLE_INTEGRATIONS_TOKEN:" \
-                -H "Content-type: application/json" -d "$json_payload" \
-                "https://circleci.com/api/v1.1/project/github/$MIT_ORGANIZATION/$MIT_PROJECT/tree/$MIT_BRANCH" \
-                | jq -r '[.build_url, .build_num] | @tsv')
-            IFS="	" set -- $res
-            test $# -eq 2 # ensure exactly 2 values are expanded
-            build_url=$1
-            build_num=$2
-            printf "Running mining integration tests. Follow it on:\n\n    %s\n\n" "$build_url"
-            sleep 10 # give CircleCI some time to spin up the job
-            wait_for_completion "$build_num"
-
-workflows:
-  # https://circleci.com/docs/2.0/configuration-reference/#version-1
-  # As of commit date, it reads:
-  #     Should currently be `2`
-  version: 2
-  build-and-test:
-    jobs:
-      - build
-      - rskj-unit-tests:
-          requires:
-            - build
-      - rskj-int-tests:
-          requires:
-            - build
-      - sonarqube:
-          requires:
-            - rskj-unit-tests
-      - mining-tests:
-          requires:
-            - rskj-unit-tests
diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
new file mode 100644
index 00000000000..9ef9a7e5fad
--- /dev/null
+++ b/.github/workflows/build_and_test.yml
@@ -0,0 +1,289 @@
+name: Build and Test
+
+on:
+  push:
+    branches:
+      - '**'
+  pull_request:
+    types: [opened, reopened, ready_for_review]
+    branches:
+      - '**'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    container:
+      image: openjdk:8-jdk
+    env:
+      _JAVA_OPTIONS: "-Xmx3G -Xms2G"
+    defaults:
+      run:
+        working-directory: .
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup System Tools
+        run: |
+          apt update -y
+          apt install -y gnupg2 curl
+      - name: Install Node.js
+        run: |
+          curl -fsSL https://deb.nodesource.com/setup_16.x | bash -
+          apt-get install -y nodejs
+      - name: Check Node.js version
+        run: node --version
+      - name: Verify files
+        run: |
+          curl -sSL https://secchannel.rsk.co/SUPPORT.asc | gpg2 --import -
+          gpg2 --verify SHA256SUMS.asc && sha256sum --check SHA256SUMS.asc
+
+      - uses: actions/cache@v4
+        name: Cache Gradle
+        with:
+          path: |
+            .gradle/caches
+            gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - uses: actions/cache@v4
+        name: Cache build
+        with:
+          path: |
+            build
+          key: ${{ runner.os }}-build-${{ hashFiles('build') }}
+          restore-keys: |
+            ${{ runner.os }}-build-
+
+      - name: Build
+        run: |
+          ./configure.sh
+          ./gradlew --no-daemon dependencies
+          ./gradlew --no-daemon --stacktrace build -x test
+          ls -la ./gradle/wrapper/gradle-wrapper.jar
+
+  sonarqube:
+    needs: build
+    runs-on: ubuntu-latest
+    container:
+      image: eclipse-temurin:17-jdk
+    defaults:
+        run:
+            working-directory: .
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run SonarQube analysis
+        run: |
+          echo "Installing git"
+          apt-get update && apt-get install -yqq git
+          extra_flags=""
+          echo "Get GH event type"
+          event_name="${{ github.event_name }}"
+          if [ "$event_name" = "pull_request" ]; then
+            echo "Setting up PR analysis"
+            echo "switch to master"
+            git branch -f master origin/master
+            pr_number=${{ github.event.pull_request.number }}
+            echo "PR number: $pr_number"
+            extra_flags="-Dsonar.pullrequest.base=master -Dsonar.pullrequest.branch=${{ github.head_ref }} -Dsonar.pullrequest.key=$pr_number"
+            echo "PR analysis flags: $extra_flags"
+          else
+            echo "Setting up branch analysis"
+            extra_flags="-Dsonar.branch.name=master"
+            echo "Branch analysis flags: $extra_flags"
+          fi
+          
+          sonar_url=${{ secrets.SONAR_URL }}
+          sonar_token=${{ secrets.SONAR_TOKEN }}
+          echo "Event name: $event_name"
+          echo "Sonar URL: $sonar_url"
+          
+          echo "Running SonarQube analysis"
+          ./configure.sh
+          ./gradlew sonarqube --no-daemon -x build -x test $extra_flags \
+          -Dsonar.organization=rsksmart -Dsonar.host.url="$sonar_url" -Dsonar.login="$sonar_token"
+
+  tests:
+    needs: build
+    runs-on: ubuntu-latest
+    container:
+      image: openjdk:8-jdk
+    defaults:
+      run:
+        working-directory: .
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup System Tools
+        run: |
+          apt update -y
+          apt install -y curl
+      - name: Install Node.js
+        run: |
+          curl -fsSL https://deb.nodesource.com/setup_16.x | bash -
+          apt-get install -y nodejs
+      - name: Check Node.js version
+        run: node --version
+
+      - uses: actions/cache@v4
+        name: Restore gradle cache
+        with:
+          path: |
+            .gradle/caches
+            gradle/wrapper
+          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+          restore-keys: |
+            ${{ runner.os }}-gradle-
+
+      - name: Get Gradle jar
+        run: |
+          ./configure.sh
+
+      - name: Unit tests
+        run: |
+          chmod +x ./gradlew
+          ./gradlew --no-daemon --stacktrace test
+      - name: Integration tests
+        run: |
+          chmod +x ./gradlew
+          ./gradlew --no-daemon --stacktrace test
+
+      - name: Save test results
+        run: |
+          mkdir -p ~/junit/
+          find rskj-core/build/test-results -type f -name "*.xml" -exec cp {} ~/junit/ \;
+        if: always()
+
+  mining-tests:
+    needs: build
+    runs-on: ubuntu-latest
+    defaults:
+        run:
+            working-directory: .
+
+    services:
+      bitcoind01:
+        image: kylemanna/bitcoind:latest
+        env:
+          DISABLEWALLET: "0"
+        ports:
+          - 31591:31591
+#        options: >-
+#          --entrypoint "/usr/local/bin/bitcoind
+
+      bitcoind02:
+        image: kylemanna/bitcoind:latest
+        env:
+          DISABLEWALLET: "0"
+        ports:
+          - 31592:31592
+#        options: >-
+#          --entrypoint "/usr/local/bin/bitcoind
+
+    steps:
+      - name: Setup System Tools
+        run: |
+          sudo apt update -y
+          sudo apt install -y curl
+      - name: Install Node.js
+        run: |
+          curl -fsSL https://deb.nodesource.com/setup_16.x | sudo bash -
+          sudo apt-get install -y nodejs
+      - name: Check Node.js version
+        run: node --version
+
+      - name: Checkout RSKj
+        uses: actions/checkout@v2
+
+      - name: Setup Java JDK
+        uses: actions/setup-java@v2
+        with:
+          java-version: '17'
+          distribution: 'temurin'
+
+      - name: Verify Java installation
+        run: java -version
+
+      - name: Checkout Mining Integration Tests Repository
+        uses: actions/checkout@v2
+        with:
+          repository: rsksmart/mining-integration-tests
+          ref: ${{ secrets.MINING_INTEGRATION_TESTS_REF }}
+          token: ${{ secrets.GITHUB_TOKEN }}
+          path: mining-integration-tests
+
+#      - uses: actions/cache@v4
+#        name: Restore gradle cache
+#        with:
+#          path: |
+#            .gradle/caches
+#            gradle/wrapper
+#          key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+#          restore-keys: |
+#            ${{ runner.os }}-gradle-
+#
+#      - name: Get Gradle jar
+#        run: |
+#          ./configure.sh
+
+      - name: Install Mining Integration Tests dependencies
+        working-directory: mining-integration-tests
+        run: |
+          npm install
+
+      - name: Start Bitcoin nodes
+        run: |
+          docker run -itd bitcoind01 /usr/local/bin/bitcoind -printtoconsole -regtest -debug -server -listen -port=31591 -connect=localhost:31592 -rpcbind=0.0.0.0:32591 -rpcallowip=0.0.0.0/0 -rpcuser=admin -rpcpassword=admin
+          docker run -itd bitcoind02 /usr/local/bin/bitcoind -printtoconsole -regtest -debug -server -listen -port=31592 -connect=localhost:31591 -rpcbind=0.0.0.0:32591 -rpcallowip=0.0.0.0/0 -rpcuser=admin -rpcpassword=admin
+
+
+      - name: Test bitcoin nodes
+        run: |
+          echo Test bitcoin node 1
+          curl -s -u admin:admin --data-binary '{"jsonrpc":"1.0","id":"curltext","method":"getblockchaininfo","params":[]}' -H 'content-type:text/plain;' http://localhost:32591
+          echo Test bitcoin node 2
+          curl -s -u admin:admin --data-binary '{"jsonrpc":"1.0","id":"curltext","method":"getblockchaininfo","params":[]}' -H 'content-type:text/plain;' http://localhost:32592
+
+      - name: Generate BTC blocks
+        working-directory: mining-integration-tests
+        run: |
+          node generateBtcBlocks.js
+
+      - uses: actions/cache@v4
+        name: Restore build
+        with:
+          path: |
+            build
+          key: ${{ runner.os }}-build-${{ hashFiles('build') }}
+          restore-keys: |
+            ${{ runner.os }}-build-
+
+      - name: Get RSKj version
+        run: |
+          version=$(tr -d "'\"" < rskj-core/src/main/resources/version.properties \
+              | cut -d = -f 2- | paste -sd - -)
+      - name: Start RSKj
+        run: |
+          java -Drsk.conf.file=./rsk-integration-test.conf -cp rskj-core/build/libs/rskj-core-"$version"-all.jar co.rsk.Start --regtest
+          rskpid=$!
+          echo "RSKj PID: $rskpid"
+          until nc -z 127.0.0.1 4444
+          do
+            echo "Waiting for RskJ..."
+            sleep 1
+          done
+      - name: Run Mining Integration Tests
+        working-directory: mining-integration-tests
+        run: |
+          npm test
+
+      - name: Stop RSKj
+        if: always()
+        run: |
+          kill $rskpid
+
+      - name: Stop and Remove Docker Containers
+        if: always()
+        run: |
+          /usr/bin/docker stop bitcoind01 bitcoind02
+          /usr/bin/docker rm bitcoind01 bitcoind02
\ No newline at end of file