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28 lines
1.9 KiB
Markdown
28 lines
1.9 KiB
Markdown
Release Notes
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=============
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This directory contains the release notes for each version of Blockstack Core. In particular, there are two types of changes in each release:
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* **Consensus-breaking Releases**: These are releases of Blockstack Core that change its consensus rules.
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Examples include adding new name opcodes, removing old ones, changing the types of transactions that are supported, which blockchain(s) are used, etc.
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Each consensus-breaking release is incompatible with all prior releases; old releases will not agree with new releases on the global name set.
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For this reason, **it is strongly recommended to run the latest Blockstack Core release.**
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* **Non-consenus-breaking Releases**: These are all other releases. They include bugfixes, reliability improvements, performance improvements, and so on.
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Notes on Consensus
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==================
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The Blockstack Developers do their best to avoid consensus-breaking releases whenever possible.
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However, certain improvements and bugfixes cannot be done without them.
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As such, the project tries to limit consensus-breaking releases to one per year (around mid-September), and only with extensive testing.
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Consensus-breaking changes are documented in the release notes, and will be publicly documented in the version's wish list file whenever possible.
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If a critical consensus-breaking bug or security vulnerability is found, a new consensus-breaking release may be made on the spot.
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If this happens, it will be documented here and announced publicly.
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A yearly consensus-breaking release is required in order to keep name and namespace prices reasonable.
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When Blockstack was first deployed, namespace prices were determined on a 1 BTC == $230 USD exchange.
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At a minimum, the consensus-breaking release must adjust the BTC prices to ensure that names and namespaces
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are neither too cheap (making squatting trivial) nor too expensive (making the system unusable).
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