2019-05-15 08:56:01 -07:00
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Notable changes
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===============
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Sprout to Sapling Migration Tool
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--------------------------------
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This release includes the addition of a tool that will enable users to migrate
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shielded funds from the Sprout pool to the Sapling pool while minimizing
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information leakage.
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The migration can be enabled using the RPC `z_setmigration` or by including
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`migration=1` in the `zcash.conf` file. Unless otherwise specified funds will be
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migrated to the wallet's default Sapling address; it is also possible to set the
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receiving Sapling address using the `migrationdestaddress=<zaddr>` option in
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`zcash.conf`.
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See [ZIP308](https://github.com/zcash/zips/blob/master/zip-0308.rst) for full details.
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Sprout to Sapling Migration Tool Fixes
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--------------------------------------
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The 2.0.5-1 and 2.0.5-2 releases include fixes to the Sprout to Sapling
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Migration Tool found in testing.
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For a complete list of changes in 2.0.5, 2.0.5-1 and 2.0.5-2, see the [2.0.5 milestone](https://github.com/zcash/zcash/milestone/79?closed=1).
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New consensus rule: Reject blocks that violate turnstile
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--------------------------------------------------------
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In the 2.0.4 release the consensus rules were changed on testnet to enforce a
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consensus rule which marks blocks as invalid if they would lead to a turnstile
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violation in the Sprout or Shielded value pools.
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**This release enforces the consensus rule change on mainnet.**
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2019-05-15 09:45:25 -07:00
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The motivations and deployment details can be found in
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[ZIP209](https://github.com/zcash/zips/blob/master/zip-0209.rst) and
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2019-05-15 08:56:01 -07:00
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[PR 3968](https://github.com/zcash/zcash/pull/3968).
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Developers can use a new experimental feature `-developersetpoolsizezero` to test
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Sprout and Sapling turnstile violations. See [PR 3964](https://github.com/zcash/zcash/pull/3964) for more details.
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64-bit ARMv8 support
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--------------------
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Added ARMv8 (AArch64) support. This enables users to build zcash on even more
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devices.
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For information on how to build see the [User Guide](https://zcash.readthedocs.io/en/latest/rtd_pages/user_guide.html#build).
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Users on the Zcash forum have reported successes with both the Pine64 Rock64Pro
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and Odroid C2 which contain 4GB and 2GB of RAM respectively.
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Just released, the Odroid N2 looks like a great solution with 4GB of RAM. The
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newly released Jetson Nano Developer Kit from Nvidia (also 4GB of RAM) is also
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worth a look. The NanoPC-T3 Plus is another option but for the simplest/best
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experience choose a board with 4GB of RAM. Just make sure before purchase that
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the CPU supports the 64-bit ARMv8 architecture.
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Changelog
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=========
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Daira Hopwood (5):
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Generalize TransactionBuilder and CreateNewContextualCMutableTransaction to allow choosing the expiry delta.
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Repair calls to TransactionBuilder from tests.
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Change expiry delta for migration transactions to 450 blocks.
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Test the expiry height of migration transactions.
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Fix cosmetic spacing issue in z_setmigration help.
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Eirik0 (7):
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Do not automatically remove async migration operations and return txids
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Add logging for Sprout to Sapling migration transaction generation
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Fix LogPrint statements
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Notable changes for v2.0.5-2
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Release notes wording and punctuation
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make-release.py: Versioning changes for 2.0.5-2.
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make-release.py: Updated manpages for 2.0.5-2.
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Simon Liu (2):
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Remove unused specifier from format string.
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Don't allow migration when node is syncing at launch or after waking up.
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