Per-transaction notes

[GoogleCodeExporter]

I run a number of pubs that accept Bitcoin over the counter.  The POS system 
produces a QR code for the customer to scan; this includes the address (a 
one-time address per transaction), amount, and a label describing the 
transaction.  It would be very helpful if the wallet could store this label in 
the transaction log without adding the address to the "Sending addresses" in 
the address book (since it will never be re-used).

(Submitting as a separate issue, as requested.)

Original issue reported on code.google.com by s...@individualpubs.co.uk on 29 Jun 2013 at 8:33

[GoogleCodeExporter]

Original comment by andreas....@gmail.com on 29 Jun 2013 at 8:59

• Changed state: Accepted
• Added labels: Type-Enhancement
• Removed labels: Type-Defect

[GoogleCodeExporter]

Its planned. There is already a "message" parameter defined in the BIP21 
Bitcoin URI scheme. The app could append additional information like a place 
that the amount was spent at.

However, what's missing is a facility to store private data with transactions. 
Mike mentioned he is planning to add this to bitcoinj. I guess its just that 
other things are more important.

If bitcoinj does not offer this, I will at some time add an auxilary database 
to the app, like I did for addresses. The downside of this approach is that 
auxilary databases are not persisted with wallets, so they are not backed up.

Original comment by andreas....@gmail.com on 29 Jun 2013 at 11:36