All the right-to-use certificates would need to be registered with an RIR to validate them in the same way that land ownership is registered in a land registry office.
Fast forward to 2013: Will we have something akin to title insurance (and logically title searches) for address space? I hope ARIN's historic records are better than those in the domain space. Is the long-term liquidity introduced by ipv6 going to affect the marketability? Legacy assets are more often valued at a premium: Manhattan, IP Swamp space, .com domains, low-value ICQ and apparently even 4-digit ASn. Will IPv4 space be valued at a premium over IPv6 space? Sure it's 'just an integer', but it is an exclusive right-to-use some mutually agreed identity and that _has_ value. Intangible assets have values placed on them all the time. I wonder what/how PT Barnum would do... -- John Ferriby - PGP Key: www.ferriby.com/pgpkey Fingerprint: 3B78 10AF A1B2 20D0 A5D9 983F 96FF D5BB CF11 BA97