November BCH Upgrade Discussion Heats Up After Bitcoin SV Full Node Announcement

Will Bitcoin SV’s Proposal be Compatible With Bitcoin ABC?


Bitcoin SV’s Lead Developer Publishes Re-Enabling Old Opcode Specs
The Bitcoin SV client’s lead developer, Daniel Connolly, has published a document of specifications concerning the SV clients’ re-enabling old opcodes. The Bitcoin SV version 1.0 document details that in May of 2018 a few disabled opcodes were re-added to the Bitcoin Cash scripting engine, and this November SV will introduce four more opcodes. “The scope of that change was limited in order to focus developer attention rather than attempting to reintroduce all of the disabled opcodes at once,” explains the Bitcoin SV spec sheet published on August 17.The re-enabled opcodes will include:This specification expands upon that change by reintroducing additional opcodes — The specifications describe the opcodes that will be added in the November 2018 protocol upgrade.
- OP_MUL — Multiplies two numbers
- OP_RSHIFT — Right shift b by n bits
- OP_LSHIFT — Left shift b by n bits
- OP_INVERT — Bitwise NOT
The Ultimate Decision Will Be Made With Hashpower
Essentially the ultimate decision making will be in the hands of the miners if they want to upgrade the block space to 128MB, or follow through with ABC’s plans. At the moment there are many different takes on this situation from a wide variety of BCH supporters. Some agree with Coingeek and Nchain and want to raise the space available in blocks, while others believe there isn’t a need for the increase, because current 32MB blocks are not yet being filled. Discussions concerning the matter have increased exponentially on BCH-centric Slack and Telegram channels, Twitter, and Reddit forums. A lot of BCH supporters believe that ultimately those who have hash power will have the final say in this debate and miners will choose which client they plan to use. Some BCH proponents are not too concerned with the possibility of incompatible clients just yet, because as far as ABC v0.18.0 and SV 1.0 are concerned, neither client has finalized plans for November’s upgrade. As mentioned above the ABC code is not ready yet and the SV 1.0 codebase plans to launch this September.
What do you think about the Bitcoin SV client and the possibility of it being incompatible with Bitcoin ABC’s November upgrade? Which upgrade proposals would you like to see finalized? Let us know your opinion on this subject in the comment section below.Regarding consensus changes, our intention is to support what the majority of hashpower wants to do — We’re also thinking about how best to know what BCH miners actually want.
Images via Shutterstock, Coindance, the Nchain Bitcoin SV announcement, and Bitcoin ABC logo.
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