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Author Topic: [PULL] Report immature coinbase txns in listtransactions  (Read 1987 times)
Gavin Andresen
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April 06, 2011, 01:53:15 PM

I think this is ready:
This patch adds immature generated blocks to listtransactions. They are reported just like mature blocks, except the category is 'immature' instead of 'generate'.

This functionality is needed by people creating alternative, JSON-RPC-based GUIs, and is useful for impatient miners who currently grep through debug.log or use unofficial patches to see not-yet-mature blocks they've generated.

I found one edge case during testing, and after discussion on #bitcoin-dev changed the information reported.  The edge case was reporting the coinbase transactions from orphaned blocks.  Here's the scenario:

+ As soon as you generate a block, the coinbase transaction goes into your wallet as a 1-confirmation transaction.  Before this patch, that transaction was not listed in the listtransactions output.  With this patch, it is (as "category" : "immature", "confirmations" : 1).

+ If that block is orphaned, the coinbase transaction is no longer valid.  With this patch, it will be reported at "category" : "orphan", "confirmations" : 0

+ When a coinbase transaction has 120 confirmations, it will be reported as "category" : "generate" (as before).

How often do you get the chance to work on a potentially world-changing project?
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April 18, 2011, 04:17:08 PM

Here is a patch that implements (in a hacky way) what I was trying to suggest on IRC:

Changing category of a transaction is rather ugly, especially when the same status concept applies to regular transactions as well.

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