Minor change in JSON schema doesn't validate calculate ?

Hi

I’m struggling with a strange bug.

My code :

const schema2 = {
            "$schema": "http://json-schema.org/draft-07/schema",
            "description": "An abstract digital asset schema.",
            "properties": {
                "$evidence": {
                    "description": "A URI pointing to the evidence JSON with data needed to certify this asset.",
                    "type": "string"
                },
                "$schema": {
                    "description": "A path to JSON Schema definition file.",
                    "type": "string"
                },
                "name": {
                    "description": "A property that holds a name of an asset.",
                    "type": "string"
                },
                "description": {
                    "description": "A property that holds a detailed description of an asset.",
                    "type": "string"
                },
                "image": {
                    "description": "A public property that can be a valid URI pointing to a resource with mime type image/* representing the asset to which this digital assets represents. Consider making any images at a width between 320 and 1080 pixels and aspect ratio between 1.91:1 and 4:5 inclusive.",
                    "type": "string"
                },

                "pictures" : {
                    "type": "array",
                    "title": "Pictures",
                    "items": 
                      {
                        "type": "object",
                        "properties": {
                          "src": {
                            "type": "string",
                            "title": "Picture URL",
                            "description": "url",
         
                          }
                        }
                      }
                    
                  },
          
            },
            "title": "Asset",
            "type": "object",
            "required": ["$schema"]
          };

        const cert2 = new Cert({ schema: schema2 });

        const data2 = {
            "$evidence": "https://troopersgame.com/dog/evidence.json",
            "$schema": "https://conventions.0xcert.org/86-base-asset-schema.json",
            "description": "A weapon for the Troopers game which can severely injure the enemy.",
            "name": "Magic Sword"
          };

        var certif2 =  await cert2.imprint(data2);  
        console.log('Ximprint',certif2);

        const proofs2 = await cert2.notarize(data2);
        console.log('Xproofs',proofs2)

        // calculate imprint
        const imprint2_test = await cert2.calculate(data2, proofs2);
        console.log('Ximprint2',imprint2_test);

Console output : Ximprint 0d8e73fbf5f687cad2202ea112a05067273fd65509e721ef1e7cb76bc0d76966 Xproofs [{…}] Ximprint2 0d8e73fbf5f687cad2202ea112a05067273fd65509e721ef1e7cb76bc0d76966 ==> Same imprint, Good !

If I change the schema from “pictures” to something else for the last element, it validates only with random change

pictures => externalContent : not ok pictures => picture : ok pictures => pict : ok pictures => picturesExternal : ok pictures => ppicturesExternal : ok pictures => ext : not ok pictures => extpic : not ok pictures => picext : ok pictures => picturespictures : ok pictures => serutcip : ok pictures => p : ok pictures => e : not ok pictures => a : not ok pictures => b : not ok pictures => s : ok

I really really don’t understand what I’m missing here … of course, it will be something very simple 😃

Also, it seems that if element start with “e” it’s not working ?

Thanks !

[gnarco]

Thanks ! I really prefer using OxCert to have a nice imprint versus a simple hash function (and of course producthunt upvoted 😃 )

[fulldecent]

Reference: this is shipped in https://github.com/0xcert/framework/releases/tag/1.5.0