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Update references to the major version number and to Canopy activation in the README (#84) 

* README.md: update references to the major version.

Signed-off-by: Daira Emma Hopwood <daira@jacaranda.org>

* README.md: update the reference to Zcash Canopy activation.

Signed-off-by: Daira Emma Hopwood <daira@jacaranda.org>

---------

Signed-off-by: Daira Emma Hopwood <daira@jacaranda.org>
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Daira Hopwood 2023-06-12 09:45:19 -07:00 committed by GitHub
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@ -23,15 +23,15 @@ individual verification consistent with batch verification and are
backwards-compatible with all existing Ed25519 signatures. Any non-Zcash users
should use the ZIP215 rules:
```toml
ed25519-zebra = "3"
ed25519-zebra = "4"
```
## ZIP 215 and changes to Zcash-flavored Ed25519
[Zcash Improvement Proposal 215][ZIP215] changes validation criteria for
Ed25519 signatures in Zcash after its activation (currently scheduled for the
Canopy network upgrade at block height 1046400). These changes remove the
dependence on validation rules inherited from a specific point release of
Ed25519 signatures in Zcash after its activation (which occurred in the
Canopy network upgrade at mainnet block height 1046400). These changes remove
the dependence on validation rules inherited from a specific point release of
`libsodium` and make individual verification consistent with batch
verification. More details and motivation are available in the text of [ZIP215].
@ -41,7 +41,7 @@ validation criteria. Users (like Zebra or zcashd) who need to handle the
upgrade can use both versions simultaneously using cargo renaming, e.g.,
```toml
ed25519-zebra-legacy = { package = "ed25519-zebra", version = "1" }
ed25519-zebra-zip215 = { package = "ed25519-zebra", version = "3" }
ed25519-zebra-zip215 = { package = "ed25519-zebra", version = "4" }
```
## Example