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May 05, 2013, 01:23:07 PM |
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Hi, I'm trying to track incomming transactions using bitcoind RPC API, --blocknotify and listsinceblock:
0. wait for --blocknotify hint
1. execute listsinceblock blockhash, 6 (target-confirmations), where blockhash is empty if running for the first time or lastblock returned by listsinceblock last time (step 3)
2. save to database transactions with confirmations >= 6 and with txid not already in database
3. remember lastblock returned by listsinceblock
4. goto 0
It is working fine and thanks to listsinceblock target-confirmation parameter lastblock is correctly shifted by 6 so I don't ommit any transactions.
If I understand correctly during chain fork blocks are lost and listsinceblock will return all transactions again because lastblock won't exist in new blockchain.
Questions:
A. Is it safe to rely on txid while ignoring already imported transactions in such situation?
B. I should also delete already imported transactions not existing in new blockchain, how to detect block chain fork easily using bitcoind RPC API?
C. Should I worry about it if accepting only txs with 6 confirmations?
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