Bitcoin Q&A: Checkpointing in the BCHABC Chain
Channel: aantonop
Date: 2019-01-14

What do you think about the use of checkpointing in BCHABC? What kinds of checkpointing are there? Has Bitcoin ever had a re-organization event?

NOTE: The chain reorganization event in Bitcoin that I mentioned at 3:03 was actually in March 2013. You can read the post-mortem (BIP-50) here: https://github.com/bitcoin/bips/blob/master/bip-0050.mediawiki

Chapters
0:00 What do you think about the use of checkpointing in BCHABC? 
1:04 Secret mining
2:48 Chain reorganization
4:38 There is another type of checkpoint which is hard-coded inside the client software
5:31 Whether you think this is a valid change or not, you can express your role in consensus

More about checkpoints:
https://bitcoin.stackexchange.com/questions/1797/what-are-checkpoints/1798
https://bitcoin.stackexchange.com/questions/70718/how-does-bitcoin-implement-checkpoint-mechanism-to-finalize-the-blockchain-histo
https://bitcoin.stackexchange.com/questions/75733/why-does-bitcoin-no-longer-have-checkpoints

https://en.bitcoin.it/wiki/Chain_Reorganization

This question is from the December monthly subscriber session, which took place on December 15th 2018. If you want early-access to talks and a chance to participate in the monthly live Q&As with Andreas, become a patron: https://www.patreon.com/aantonop

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