This is not an altcoin spam post.
I have been looking at the issue of pensions and bitcoin for a about a month now.
The main issues I have found (my thinking might be considered flawed on this but its my view) is:
* index linking to maintain the value of a pension; and
* having restricted access to funds in order for them to qualify for pension tax and contribution top-up status by governments and employers.
Bitcoin in its infancy will have volatility. As one gets older, one would want more certainty in order to plan for the years when there is no income other than from pensions.
What Bitcoin needs to do is cross the divide to stockmarkets.
Once this divide is crossed, a Bitcoin pension fund can be index linked to an ETF which smooths out the risks of investing in specific stocks and uncertain currency markets, of any shape or nature, but still provides a return.
My approach to the issue was to use Peter Todd's future lock to prove an individual can't access their bitcoins until a future date that qualifies as a pension accessibility date for tax and pension contribution status.
However, between the current period and the future accessibility period, those Bitcoin funds would need to be invested in an ETF, with dividends either being exchanged back for Bitcoin or reinvested into the ETF.
When the pension approaches the unlock date, the ETF investments could be wound down with proceeds being converted back to Bitcoin. If Bitcoin should fail by the time they reach retirement, the ETF can be liquidated into fiat.
This approach doesn't necessarily mean the that beneficiary has to rely on a company to invest their Bitcoin in an ETF. They can do their own investing and the time lock, in addition to the blockchain, could be used as proof of accessibility but within the pension qualification rules.
The main issue to doing all this was the mechanism. That is where (just for the sake of the discussion let this altcoin intervention be used) decentralised nodes with services running come in to play. The services they can run include multi-sig and escrow.
The enabling mechanism then becomes an escrow to your future self, and a multi-sig party that can lock the funds in trust until a future date but allow them to move to a stockmaket brokerage account (your own or managed). The ETF execution orders can then also be handled by the same client which gives instructions to move funds between the ETF and specific Bitcoin addresses that are locked until a future date, else to Fiat.
Actually, what got me started down this line of thinking of using multiple services to link to a pension pot was a way to encourage those under 20-30 to use a Bitcoin change tip to send small daily amounts to a pension pot that they couldn't touch.
An average of $5/day in change over 50 years, when invested via an ETF, can yield between $90k to $200k, in BTC.
More on the nodes concept here
https://bitcointalksearch.org/topic/m.10656234