The only thing you can provide is the physical share certificate or some correspondence with your lawyers regarding that ownership. There is no way that is a public info as of now.How do you mean? we supplied a physical document. But they don't accept. needs to be "online". Do you think the "register" will seriously change their website for us?(as they somehow ask for) Don't think thats realistic.
I'd treat that as the "modern-world-way" of saying: No - gtfo - Panama no mas.