Let's extend your example - I have a bond that costs $1 today, but is worth $1,000 at maturity - except that maturity is in 1,000 years. So, can the bank claim

Let's extend your example - I have a bond that costs $1 today, but is worth $1,000 at maturity - except that maturity is in 1,000 years. So, can the bank claim it has $1,000 now?