Eip4 update

common/src/main/java/org/ergoplatform/appkit/Eip4Token.java

@@ -71,12 +71,6 @@ public Eip4Token(@Nonnull String id, long amount, @Nonnull String name,
         this.description = description;
         this.decimals = decimals;
 
-        // check if EIP4 specification is fulfilled. It defines that R7 to R9 are null, or
-        // R7 and R8 are set with R9 being optional. Other combinations are not valid.
-        if (!(r7 != null && r8 != null || r7 == null && r8 == null && r9 == null)) {
-            throw new IllegalArgumentException("Either define all of R7 to R9 or none of them");
-        }
-
         this.r7 = r7;
         this.r8 = r8;
         this.r9 = r9;
@@ -274,6 +268,10 @@ public enum AssetType {
          * NFT - video artwork
          */
         NFT_VIDEO,
+        /**
+         * NFT - Artwork collection
+         */
+        ARTWORK_COLLECTION,
         /**
          * Membership token - threshold signature
          */
@@ -294,6 +292,8 @@ public byte[] getR7ByteArrayForType() {
                     return new byte[]{1, 2};
                 case NFT_VIDEO:
                     return new byte[]{1, 3};
+                case ARTWORK_COLLECTION:
+                    return new byte[] {1, 4};
                 case MEMBERSHIP_THRESHOLD_SIG:
                     return new byte[]{2, 1};
                 default:

lib-impl/src/main/java/org/ergoplatform/appkit/impl/Eip4TokenBuilder.java

@@ -245,4 +245,11 @@ else if (linkToContent != null && linkToCoverImage != null)
 
         return eip4Token;
     }
+
+
+    public static Eip4Token buildNftArtworkCollectionToken(@Nonnull String id, long amount, @Nonnull String name,
+                                                           @Nonnull String description, int decimals) {
+
+        return new Eip4Token(id, amount, name, description, decimals, ErgoValue.of(Eip4Token.AssetType.NFT_AUDIO.getR7ByteArrayForType()), null, null);
+    }
 }

lib-impl/src/main/java/org/ergoplatform/appkit/impl/OutBoxBuilderImpl.scala

@@ -39,13 +39,20 @@ class OutBoxBuilderImpl(_txB: UnsignedTransactionBuilderImpl) extends OutBoxBuil
     val tokenNumOfDecVal = token.getMintingBoxR6
     _registers ++= Array(tokenNameVal, tokenDescVal, tokenNumOfDecVal)
 
-    // optional registers, but either all of them or none
-    if (token.getMintingBoxR7 != null && token.getMintingBoxR8 != null) {
-      _registers ++= Array(token.getMintingBoxR7, token.getMintingBoxR8)
-      if (token.getMintingBoxR9 != null)
-        _registers += token.getMintingBoxR9
-    }
+    if(token.getMintingBoxR7 != null){
+      _registers ++= Array(token.getMintingBoxR7)
+
+      if(token.getMintingBoxR8 != null){
+        _registers ++= Array(token.getMintingBoxR8)
+
 
+        if(token.getMintingBoxR9 != null){
+          _registers ++= Array(token.getMintingBoxR9)
+        }
+
+      }
+
+    }
     _tokens += token
     this
   }