diff --git a/pollux/lib/anoncreds/README_anoncreds.md b/pollux/lib/anoncreds/README_anoncreds.md
index dadc9ef5b9..80fc891694 100644
--- a/pollux/lib/anoncreds/README_anoncreds.md
+++ b/pollux/lib/anoncreds/README_anoncreds.md
@@ -12,6 +12,19 @@ https://github.com/hyperledger/anoncreds-rs/releases/tag/v0.1.0-dev.15
 The file `anoncreds.udl` describes the warp interface generated with Uniffi.
 The file can be found in the IOHK's anoncreds-rs repository [https://github.com/input-output-hk/anoncreds-rs/blob/main/uniffi/src/anoncreds.udl](https://github.com/input-output-hk/anoncreds-rs/blob/main/uniffi/src/anoncreds.udl)
 
+
+## Build Jar lib
+
+Build the NATIVE anoncred lib from IOHK's fork of the anoncreds-rs [https://github.com/input-output-hk/anoncreds-rs](https://github.com/input-output-hk/anoncreds-rs)
+
+Go into the folder `uniffi` and generate the file `anoncreds.kt`
+
+Assuming uniffi_bindgen is install. Install with `cargo install uniffi_bindgen --version $(cargo pkgid uniffi | cut -f 2 -d '@')`
+
+Replace the `anoncreds.kt` file in the UniffiPOC project (`UniffiPOC/src/main/uniffi/anoncreds/anoncreds.kt`)
+
+Generate the Jar with `./gradlew jar` in the UniffiPOC project
+
 ## Build the NATIVE lib 
 
 Build the NATIVE anoncred lib from IOHK's fork of the anoncreds-rs [https://github.com/input-output-hk/anoncreds-rs](https://github.com/input-output-hk/anoncreds-rs)
diff --git a/pollux/lib/anoncreds/UniffiPOC-1.0-SNAPSHOT.jar b/pollux/lib/anoncreds/UniffiPOC-1.0-SNAPSHOT.jar
index e9522f9e26..7b9d6fe6a3 100644
Binary files a/pollux/lib/anoncreds/UniffiPOC-1.0-SNAPSHOT.jar and b/pollux/lib/anoncreds/UniffiPOC-1.0-SNAPSHOT.jar differ
diff --git a/pollux/lib/anoncreds/native-lib/NATIVE/linux/amd64/libuniffi_anoncreds.so b/pollux/lib/anoncreds/native-lib/NATIVE/linux/amd64/libuniffi_anoncreds.so
index 865d0c0cd2..2856fe52a5 100755
Binary files a/pollux/lib/anoncreds/native-lib/NATIVE/linux/amd64/libuniffi_anoncreds.so and b/pollux/lib/anoncreds/native-lib/NATIVE/linux/amd64/libuniffi_anoncreds.so differ
diff --git a/pollux/lib/anoncredsTest/src/test/scala/io/iohk/atala/pollux/anoncreds/PoCNewLib.scala b/pollux/lib/anoncredsTest/src/test/scala/io/iohk/atala/pollux/anoncreds/PoCNewLib.scala
index d363a216ca..f09e4d2803 100644
--- a/pollux/lib/anoncredsTest/src/test/scala/io/iohk/atala/pollux/anoncreds/PoCNewLib.scala
+++ b/pollux/lib/anoncredsTest/src/test/scala/io/iohk/atala/pollux/anoncreds/PoCNewLib.scala
@@ -52,7 +52,7 @@ class PoCNewLib extends AnyFlatSpec {
 
     println(credentialDefinition)
 
-    println(credentialDefinition.getCredentialDefinition())
+    println(credentialDefinition.getCredentialDefinition().getJson())
     println(credentialDefinition.getCredentialDefinitionPrivate().getJson())
     println(credentialDefinition.getCredentialKeyCorrectnessProof().getJson())
 
@@ -71,8 +71,7 @@ class PoCNewLib extends AnyFlatSpec {
     )
 
     println("CreateOffer")
-    println(tmp)
-    // println(AnonCredsAPI.getJson(tmp.ref.getValue()))
+    println(tmp.getJson())
     tmp
   }
 
@@ -82,30 +81,19 @@ class PoCNewLib extends AnyFlatSpec {
       credentialOffer: CredentialOffer
   ) = {
 
-    // string? entropy,
-    // string? prover_did,
-    // CredentialDefinition cred_def,
-    // LinkSecret link_secret,
-    // string link_secret_id,
-    // CredentialOffer credential_offer
-
     val credentialRequest = Prover().createCredentialRequest(
-      "entropy",
-      null,
-      credentialDefinition,
-      linkSecret,
-      "linkSecretId",
-      credentialOffer,
+      "entropy", // string? entropy,
+      null, // string? prover_did,
+      credentialDefinition, // CredentialDefinition cred_def,
+      linkSecret, // LinkSecret link_secret,
+      "linkSecretId", // string link_secret_id,
+      credentialOffer, // CredentialOffer credential_offer
     )
 
-    print("Request: ")
+    println("Request: ")
     println(credentialRequest.getRequest().getJson())
-    print("Metadata: ")
-    println(credentialRequest.getMetadata())
-    // println(AnonCredsAPI.getJson(credentialRequest.ref.getValue()))
-    // print("cred_req_meta_p: ")
-    // println(credentialRequest.meta_ref)
-    // println(AnonCredsAPI.getJson(credentialRequest.meta_ref.getValue()))
+    println("Metadata: ")
+    println(credentialRequest.getMetadata()) // FIXME Do we also need a getJson method?
     credentialRequest
   }
 
@@ -139,6 +127,7 @@ class PoCNewLib extends AnyFlatSpec {
       null,
     )
 
+    println("issuer_createCredential:")
     println(cred.getJson())
     cred
   }
@@ -154,7 +143,10 @@ class PoCNewLib extends AnyFlatSpec {
     println("*** holder " + ("*" * 100))
 
     val linkSecret = LinkSecret()
-    println(linkSecret.getBigNumber())
+    println(linkSecret.getBigNumber()) // TODO REMOVE
+    println(
+      linkSecret.getJson()
+    ) // FIXME this printing 5FCC7E4BC91B265C59E059369E5C49901AB38E50DF20C218F7B2135E165BAE3C and should have '"' like: "5FCC7E4BC91B265C59E059369E5C49901AB38E50DF20C218F7B2135E165BAE3C"
 
     val credentialRequest =
       holder_createCredentialRequest(linkSecret, credentialDefinition.getCredentialDefinition(), credentialOffer)