"api/address/" + address;
        let nonjson = await getData(url);
        if (!isValidJson(nonjson)) return false;
        let json = JSON.parse(nonjson);
        if (json["chain_stats"]["tx_count"] > 0 || (includeMempool && json["mempool_stats"]["tx_count"] > 0)) {
            return true;
        }
        return false;
    }

    async function probeAddress(address) {
        let url = "https://mempool.space/" + mempoolNetwork + "api/address/" + address;
        let nonjson = await getData(url);
      