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Competition
The hypothetical implementation of the BIP 109 should not be seen as a change from Bitcoin Core to Bitcoin Classic, but simply as a feature that would be implemented in Bitcoin by members of the Bitcoin Classic development team and agreed upon by the community. Miners will still be able to use an updated version of Bitcoin Core that will allow them to validate blocks larger than a 1MB and to stay on the right blockchain, in case a consensus to increase the block size limit is reached. In that sense, none of the teams should be seen as trying to take over one other, or bitcoin itself, in a competition. But are simply two teams that are working on different ways to achieve the same purpose, which is to ensure Bitcoin's functionality, security and scalability.
Bitcoin Core has also presented many solutions to the scalability problem, such as Segregated Witness (separating transaction data from cryptographic signatures), Sidechains and Lightning Network. The biggest concern regarding these solutions the creation of federations and fractional reserve systems, like the ones that have lead popular Bitcoin Exchanges to ruin and continue to do so for our current banking system. None of them are released, however, while Bitcoin Classic released the 2MB change in February.
Bitcoin Classic's main goal is, in this sense, to provide an on-chain solution to scalability and to allow users to make transactions in Bitcoin and not in Bitcoin substitutes.
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