diff --git a/.circleci/config.yml b/.circleci/config.yml
index fe9dcb9d..9e8b525e 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -27,7 +27,7 @@ jobs:
       - run:
           name: Verify files
           command: |
-            curl -sSL https://secchannel.rsk.co/release.asc | gpg2 --import -
+            curl -sSL https://secchannel.rsk.co/SUPPORT.asc | gpg2 --import -
             gpg2 --verify SHA256SUMS.asc && sha256sum --check SHA256SUMS.asc
       - run:
           name: Clone rskj repo
diff --git a/.github/workflows/reproducible.yml b/.github/workflows/reproducible.yml
index 7fdc5da4..7b415028 100644
--- a/.github/workflows/reproducible.yml
+++ b/.github/workflows/reproducible.yml
@@ -21,7 +21,7 @@ jobs:
 
       - name: Download Release key
         run: |
-          gpg --keyserver https://secchannel.rsk.co/release.asc --recv-keys 1A92D8942171AFA951A857365DECF4415E3B8FA4
+          gpg --keyserver https://secchannel.rsk.co/SUPPORT.asc --recv-keys 1DC9157991323D23FD37BAA7A6DBEAC640C5A14B
 
       - name: Verify files integrity
         run: |
diff --git a/README.md b/README.md
index 430ed7e8..4b2dd792 100644
--- a/README.md
+++ b/README.md
@@ -79,9 +79,8 @@ Before anything, you must ensure the security chain of the source code. For that
 1. Download sec channel public key
 
 ```bash
-$ gpg --keyserver https://secchannel.rsk.co/release.asc --recv-keys 5DECF4415E3B8FA4
-gpg: requesting key 5E3B8FA4 from https server secchannel.rsk.co
-gpg: key 5E3B8FA4: public key "RSK Release Signing Key <support@rsk.co>"      imported
+$ $ gpg --keyserver https://secchannel.rsk.co/SUPPORT.asc --recv-keys A6DBEAC640C5A14B
+gpg: key A6DBEAC640C5A14B: "IOV Labs Support <support@iovlabs.org>"      imported
 gpg: Total number processed: 1
 gpg:               imported: 1  (RSA: 1)
 ```
@@ -89,24 +88,25 @@ gpg:               imported: 1  (RSA: 1)
 2. Verify the downloaded key fingerprint
 
 ```bash
-$ gpg --finger 5DECF4415E3B8FA4
-pub   4096R/5E3B8FA4 2017-05-16 [expires: 2022-05-15]
-      Key fingerprint = 1A92 D894 2171 AFA9 51A8  5736 5DEC F441 5E3B 8FA4
-uid                  RSK Release Signing Key <support@rsk.co>
-sub   4096R/A44DCC86 2017-05-16 [expires: 2022-05-15]
-sub   4096R/5E488E87 2017-05-16 [expires: 2022-05-15]
-sub   4096R/9FC3E7C2 2017-05-16 [expires: 2022-05-15]
+$ $ gpg --finger A6DBEAC640C5A14B
+pub   rsa4096 2022-05-11 [C]
+      1DC9 1579 9132 3D23 FD37  BAA7 A6DB EAC6 40C5 A14B
+uid           [ unknown] IOV Labs Support <support@iovlabs.org>
+sub   rsa4096 2022-05-11 [S]
+sub   rsa4096 2022-05-11 [E]
 ```
 
 3. Verify the `SHA256SUMS.asc` signature
 
 ```bash
-$ gpg --verify SHA256SUMS.asc
-gpg: Signature made mar 16 may 2017 16:47:56 ART
-gpg:                using RSA key 0x67D06695A44DCC86
-gpg: Good signature from "RSK Release Signing Key <support@rsk.co>" [ultimate]
-Primary key fingerprint: 1A92 D894 2171 AFA9 51A8  5736 5DEC F441 5E3B 8FA4
-    Subkey fingerprint: D135 DDC0 B54D 6EF3 5901  52DF 67D0 6695 A44D CC86
+$ gpg --verify SHA256SUMS.asc 
+gpg: Signature made Wed May 11 10:50:48 2022 -03
+gpg:                using RSA key 1F1AA750373B90D9792DC3217997999EEA3A9079
+gpg: Good signature from "IOV Labs Support <support@iovlabs.org>" [unknown]
+gpg: WARNING: This key is not certified with a trusted signature!
+gpg:          There is no indication that the signature belongs to the owner.
+Primary key fingerprint: 1DC9 1579 9132 3D23 FD37  BAA7 A6DB EAC6 40C5 A14B
+    Subkey fingerprint: 1F1A A750 373B 90D9 792D  C321 7997 999E EA3A 9079
 ```
 
 4. Verify the `configure.sh` script
diff --git a/SHA256SUMS.asc b/SHA256SUMS.asc
index 04582cbe..d83d73b1 100644
--- a/SHA256SUMS.asc
+++ b/SHA256SUMS.asc
@@ -1,20 +1,20 @@
 -----BEGIN PGP SIGNED MESSAGE-----
-Hash: SHA256
+Hash: SHA512
 
 271eadce610f19e92b5f8e66e291c4b25edf3696a67d297706a08ac13a6ca346  configure.sh
 -----BEGIN PGP SIGNATURE-----
 
-iQIzBAEBCAAdFiEE0TXdwLVNbvNZAVLfZ9BmlaRNzIYFAl+ApzoACgkQZ9BmlaRN
-zIbdQRAAnSjujbWsUeKyI4VCcgmrc1DE+UcK1+X9xKv4o1nzA2m4GqZeIY1mJOr7
-pib55O4lwyiYq0SwFYvPRGz9BoR+FXTGAZ5w0sjOaHSTy/6IjPjYEDGOM6dVXunW
-3YDAI4FRK8A79vSPo5EzW5JYIF3kK6/pWS59deoJ1GNmmgKI9rWg+Rp/cRprtUo0
-CuHu2ih1N6P2hq1Ux0k2DSbQb0MNHSt8kw92r9j63xB7Eh5/bVm/wqeujBMuorlz
-ZJ5AmAXpD/RL8N7hwMuqLDFY7gfn3ujGPlERUAKPRnYJ1ck/nfEBextNG257zsbZ
-QjCW3HneGQakl2Rw0jdD9/rUkT/F7MOJSN5zOnri2v6y7OkBjgBkTbzPEX9CMYEX
-oVzYznZSDiu05lhH5hzKxPZzYvJBYB48L30XIoOYEHYJzadqak/LmB379OKRNQ0V
-TKPMjfRKi3iUyVmNlgEHNg5ynvFw5Pl4qSD1+yxiitVNFYLVg+sQwKdhqjeJVNkt
-Zn/clLYEGq9phL18YUs+47h27aSb2WXhgBipHPn9ig4SyOZZP8jx7fk9OewAiCop
-z/9sgcjIOcc2ZkmLtIcx7SqeCrUkXC82W387XYBppnwnFKdZhKJpPvxGyvQwQu10
-D5P4BGwkWBdlnFSmvEjvHgTNnomLhdgg0Xm1IzL1SQ+gpKHmskQ=
-=Dirh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+=JPmX
 -----END PGP SIGNATURE-----
diff --git a/build.gradle b/build.gradle
index 0e7352ca..f2446a49 100644
--- a/build.gradle
+++ b/build.gradle
@@ -65,7 +65,7 @@ ext {
     junitVersion = '4.12'
     mockitoVersion = '2.23.4'
     powermockitoVersion = '2.0.2'
-    rskjcoreVersion = '3.3.0-SNAPSHOT'
+    rskjcoreVersion = '4.0.0-RC'
 }
 
 dependencies {
diff --git a/src/main/resources/version.properties b/src/main/resources/version.properties
index 0d0c9484..0f39347f 100644
--- a/src/main/resources/version.properties
+++ b/src/main/resources/version.properties
@@ -1,2 +1,2 @@
-versionNumber='3.4.0.0'
-modifier="SNAPSHOT"
+versionNumber='4.0.0.0'
+modifier="RC"