[FAQ] What is BIP34 Hash, coinbase Height and nVersion?

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BIP34 Hash and coinbase Height

The nVersion setting in the software defines the database version / binary structure …

[Quote : ] Gavin Andresen BIP 34 : block height in the coinbase
July 10, 2012, 01:29:10 PM

In case you don’t subscribe to the bitcoin-development mailing list, we’ve been talking about a new BIP:

“Bitcoin blocks and transactions are versioned binary structures. Both currently use version 1. This BIP introduces an upgrade path for versioned transactions and blocks. A unique value is added to newly produced coinbase transactions, and blocks are updated to version 2.”

Full BIP: https://en.bitcoin.it/wiki/BIP_0034
Mailing list discussion: http://sourceforge.net/mailarchive/message.php?msg_id=29505990
Pull request that implements BIP 34: https://github.com/bitcoin/bitcoin/pull/1526
BIP16 “Lessons learned” : https://gist.github.com/2355445