"param" must be JSON given by "start" like: { "uncompletedProof": [ "push aa1a8c054aaa13f5f3043021c9eafafa0a85e557a4fc309cce97af9aa6152914", "set hashesGiven", "append 0000019828fd10fb", "sha256", "prepend d690c160ca800c472aadaa511258d7b7cc284df72783885c72410510b30f0fac", "sha256", "prepend 90eba569dc2b7c823d3960a8d2e7d0119693ea03b56875bfd8593b196465d330", "sha256", "set rootCalculated" ], "ots": "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" }