Setting global block attribute value

I have a scenario where I will have to use the same API key for all the blocks of the same namespace that is present and that will be created new. So when user inputs on one block through a form, it will update on all the blocks of the particular namespace instantly.

Currently when register_block_type() and props.setAttributes method is used, the values for each attribute is unique for each of the block. I have seen the documentation. I couldn't see a standard way for sharing the same value across blocks.

Register code:

registerBlockType("namespace", {
  title: "Plugin title",
  category: "common",
  attributes: {
    apiKey: { type: "string" },

Handling submit from the form inside InspectorControls:

<InspectorControls>
      <PanelBody>
        <form id="api-key-input" onSubmit={(e) => handleSubmit(e)}>
          <input
            type="password"
            ref={inputRef}
            defaultValue={props.attributes.apiKey}
          />
          <input type="submit" />
        </form>
 </InspectorControls>

function handleSubmit(e) {
  e.preventDefault();
  props.setAttributes({ apiKey: inputRef.current.value });
}

The methods that I have looked at so far.

1. Storing the attributes in the database using update_option but I did not see any get_option for the Gutenberg block.
2. wp.data.subscribe way of dispatching to the blocks required.
3. Creating a registry store and managing the overall value using states.

Is there an easiest/safest way of doing this that I am missing, like setting an option or supports value?