code: function _isValidCoreURI(coreURI) {
    if (_isEmpty(coreURI) || !_isString(coreURI)) return false
  
    try {
      return isURL(coreURI, {
        protocols: ['https'],
        require_protocol: true,
        host_whitelist: [/^[a-z]\.chainpoint\.org$/]
      })
    } catch (error) {
      return false
    }
  }
docs: Check if valid Core URI
  
  @param {string} coreURI - The Core URI to test for validity
  @returns {bool} true if coreURI is a valid Core URI, otherwise false