I am not taking a stance on if you are lying or not, however, it appears that your domain was registered the day the other thread was created and the Whois was last updated earlier this month.

I am not an expert in the value of domains, but I don’t think it would be a good idea for someone who is not an expert in valuing domains to accept your domain as collateral. If an expert believes in the value of your domain, they are free to risk their own money.