A simple automated script, hosted with LR's website could be made that isn't terribly complicated. One possible algorithm is to do this:
1. Website server receives seller messages from LR webpage (basic input text boxes that get submitted to server side script).
2. Script verifies messages from seller.
3. If verified, script verifies seller actually has bonds and sufficient quantity per some official copy of the ledger.
4. If verified, website market page is updated to reflect sellers quantity and ask price for market to see. *
5. Buyer see's price and clicks seller price. Immediately, that sell order is removed from the cue to avoid duplicate orders. Anyone subsequently clicking with a then stale webpage will simply get no record found.
6. Buyer is presented input options and submits message to purchase (including wallet address which the verified message depends upon - that is his account number - and also an optional wallet address for receiving dividends).
7. Script verifies buyer sent sufficient btc as per the blockchain (within say 1 hours and maybe at least 3 confirmations). If not received, then there is a problem on how to clear this...this could cause problems.
8. If verified, deduct quantity from seller account and add to buyers account (if that account already exists) on bond ledger. If buyers account does not yet exist, create one now and add to ledger with bought quantity.
* A couple other aspects need to be included. Such as allowing seller to cancel order. And making sure old messages are deleted to avoid an order being executed twice.
Note: Because there is no online buyers wallet involved that a seller can tap into without further buyer action, this is a seller's market page.
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I'm coder and was thinking to the simplest way to do that, and thought about a system in which the user was the btc address, address that LRM have with amount of shares owned. All can be public no login needed, a simple form to sell or buy, to sell a form with quantity, price and address, then the system genate a string with the operation, the same as we sign when operate with grnbrg, you must sign with your btc client and paste the signature, if signature is correct the operation is saved and this number of shares blocked (scrow).
I haven't thought too much the whole procedure, but must control how to add new users (addresses) , the buy offer procedure the same as sale, but how to control the payment? If the system is connected to a bitcoin client and wallet it can generate new addresses to receive the payment and then change the shares owner in system and retransfer the amount of sale to seller. If no btc client, maybe can monitorize blockchain to watch if seller's address receives an incoming transfer with same amount of sale (less secure).
To be simple you must buy or sell full offers, click a ask or bid and make the process, if you want to make a real stock exchange system with portions is more complicated.
There is no such volume and market speed that you can't contact the seller to modify his amount of ask, or maybe you can make a bid and the seller delete his ask and click in your bid.
This way is more anonymous and faster, no login, no mail account.
Regards