Update checkpoints to 1710000

Merge pull request 'Merge dev' (#5 ) from dev into main
Reviewed-on: https://git.hush.is/hush/hush-android-wallet-sdk/pulls/5
36 changed files with 851 additions and 184 deletions
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@ -9,7 +9,6 @@ Please read it before you start participating.
 * [Reporting Security Issues](#reporting-security-issues)
 * [Reporting Non Security Issues](#reporting-other-issues)
 * [Commit Messages](#commit-messages)
-* [Developers Certificate of Origin](#developers-certificate-of-origin)

 ## Asking Questions

@ -20,7 +19,7 @@ label.

 ## Reporting Security Issues

-If you have discovered an issue with this code that could present a security hazard or wish to discuss a sensitive issue with our security team, please contact security@z.cash [security.asc](https://z.cash/gpg-pubkeys/security.asc). Key fingerprint = AF85 0445 546C 18B7 86F9 2C62 88FB 8B86 D8B5 A68C
+If you have discovered an issue with this code that could present a security hazard or wish to discuss a sensitive issue with our security team, please contact us on [Telegram](https://hush.is/tg) or [Matrix](https://hush.is/matrix)

 ## Reporting Non Security Issues

@ -30,8 +29,6 @@ We always appreciate a well-written, thorough bug report.

 Check that the project issues database
 doesn't already include that problem or suggestion before submitting an issue.
-If you find a match, add a quick "+1" or "I have this problem too."
-Doing this helps prioritize the most common problems and requests.

 When reporting issues, please include the following:

@ -43,30 +40,11 @@ When reporting issues, please include the following:

 This information will help us review and fix your issue faster.

-## Pull Requests
-
-We **love** pull requests!
-
-All contributions _will_ be licensed under the MIT license.
-
-Code/comments should adhere to the following rules:
-
-* Every Pull request must have an Issue associated to it. PRs with not
-associated with an Issue will be closed
-* Code build and Code Lint must pass.
-* Names should be descriptive and concise.
-* Although they are not mandatory, PRs that include significant testing will be
-prioritized.
-* All enhancements and bug fixes need to be documented in the CHANGELOG.
-* When writing comments, use properly constructed sentences, including
-  punctuation.
-* When documenting APIs and/or source code, don't make assumptions or make
-  implications about race, gender, religion, political orientation or anything
-  else that isn't relevant to the project.
-* Remember that source code usually gets written once and read often: ensure
-  the reader doesn't have to make guesses. Make sure that the purpose and inner
-  logic are either obvious to a reasonably skilled professional, or add a
-  comment that explains it.
+## Code contributions
+
+We **love** contributions!
+
+All contributions _will_ be licensed under the GPLv3 license.
  
 ## Commit Messages

@ -92,16 +70,7 @@ issue following the criteria described in the preceeding sections.
 Every contribution must reference an existing Issue. This issue is important
 since it will be directly referenced in the title of your commit. 

-Although we prefer small PR's. We encourage our contributors to use Squash
-commits extensively. Maintainers prefer avoiding _merge commits_ when possible. 
-It is very much likely that _if accepted_, your contribution will be _squash merged_.
-
-When squashing commits, use your best judgement. In some situations, a refactoring may
-be done before actual behavior changes are implemented. It is reasonable to keep such
-a refactoring as a separate commit as it both makes review easier and allows for 
-these refactoring commit SHAs to be added to `.git-blame-ignore-revs`.
-
-### Structuring a PR Commit
+### Structuring a Commit

 #### Commit Title
 The first line of your commit message constitutes its _title_. Maintainers will 
@ -123,19 +92,13 @@ optionally you can append the PR # between parenthesis.
 #### Commit message's body

 Use the body of the commit to bring more context to the change. Usually the bulk
-of the problem might be explained in the GitHub Issue. It's a good long term strategy
+of the problem might be explained in an issue. It's a good long term strategy
 not to rely on such elements. If the project were to change its hosting, much of the
 associated "Issues" and "pull requests" will be lost, yet the commit history will
 probably be preserved and the context will also be.

 If there are followup issues for this commit, consider referencing those as well.

-**Use the tools on your favor!**
-
-When opening a Pull Request, GitHub will take the title of your commit as the PR's
-title and the body of your PR its description. Having a proper structure on your
-commit will make your day shorter.
-

 ### Example:

@ -160,32 +123,3 @@ and the body will be added as the description of the PR.

 Adding the text `Closes #{issue_number}` will tell GitHub to close the issue when the PR is merged.

-Let the machines do their work.
-
-## Developer's Certificate of Origin 1.1
-
-By making a contribution to this project, I certify that:
-
- (a) The contribution was created in whole or in part by me and I
-      have the right to submit it under the open source license
-      indicated in the file; or
-
- (b) The contribution is based upon previous work that, to the best
-      of my knowledge, is covered under an appropriate open source
-      license and I have the right under that license to submit that
-      work with modifications, whether created in whole or in part
-      by me, under the same open source license (unless I am
-      permitted to submit under a different license), as indicated
-      in the file; or
-
- (c) The contribution was provided directly to me by some other
-      person who certified (a), (b) or (c) and I have not modified
-      it.
-
- (d) I understand and agree that this project and the contribution
-      are public and that a record of the contribution (including all
-      personal information I submit with it, including my sign-off) is
-      maintained indefinitely and may be redistributed consistent with
-      this project or the open source license(s) involved.
-
-This contribution guide is inspired on great projects like [AlamoFire](https://github.com/Alamofire/Foundation/blob/master/CONTRIBUTING.md) and [CocoaPods](https://github.com/CocoaPods/CocoaPods/blob/master/CONTRIBUTING.md)
--- a/640
+++ b/640
@ -1,21 +1,619 @@
-The MIT License (MIT)
-
-Copyright (c) 2017-2021 Electric Coin Company
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
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-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
+                    GENERAL GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+  11. Patents.
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+  Nothing in this License shall be construed as excluding or limiting
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+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
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+  The Free Software Foundation may publish revised and/or new versions of
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+
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+Foundation.  If the Program does not specify a version number of the
+GENERAL General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GENERAL General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
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+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
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+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
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+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
--- a/README.md
+++ b/README.md
@ -1,7 +1,7 @@
 This is a beta build and is currently under active development. Please be advised of the following:

 - This code currently is not audited by an external security auditor, use it at your own risk
- The code **has not been subjected to thorough review** by engineers at the Electric Coin Company
+- The code **has not been subjected to thorough review** 
 - We **are actively changing** the codebase and adding features where/when needed

 🔒 Security Warnings
@ -17,15 +17,14 @@ This lightweight SDK connects Android to Hush, allowing third-party Android apps

 Different sections of this repository documentation are oriented to different roles, specifically Consumers (you want to use the SDK) and Maintainers (you want to modify the SDK).

-Note: This SDK is designed to work with [lightwalletd](https://github.com/zcash-hackworks/lightwalletd).  As either a consumer of the SDK or developer, you'll need a lightwalletd instance to connect to.  These servers are maintained by the Hush community.
+Note: This SDK is designed to work with [lightwalletd](https://git.hush.is/hush/lightwalletd).  As either a consumer of the SDK or developer, you'll need a lightwalletd instance to connect to.  These servers are maintained by the Hush community.
+lightwalletd v0.1.2 or higher is required.

 Note: Because we have not deployed a non-beta release of the SDK yet, version numbers currently follow a variation of [semantic versioning](https://semver.org/).  Generally a non-breaking change will increment the beta number while a breaking change will increment the minor number.  1.0.0-beta01 -> 1.0.0-beta02 is non-breaking, while 1.0.0-beta01 -> 1.1.0-beta01 is breaking.  This is subject to change.

 # Hush Networks
 "mainnet" (main network) and "testnet" (test network) are terms used in the blockchain ecosystem to describe different blockchain networks.  Mainnet is responsible for executing actual transactions within the network and storing them on the blockchain. In contrast, the testnet provides an alternative environment that mimics the mainnet's functionality to allow developers to build and test projects without needing to facilitate live transactions or the use of cryptocurrencies, for example.

-The Hush testnet is an alternative blockchain that attempts to mimic the mainnet (main Hush network) for testing purposes. Testnet coins are distinct from actual ZEC and do not have value. Developers and users can experiment with the testnet without having to use valuable currency. The testnet is also used to test network upgrades and their activation before committing to the upgrade on the main Hush network. For more information on how to add testnet funds visit [Testnet Guide](https://zcash.readthedocs.io/en/latest/rtd_pages/testnet_guide.html) or go right to the [Testnet Faucet](https://faucet.zecpages.com/).
-
 This SDK supports both mainnet and testnet.  Further details on switching networks are covered in the remaining documentation.

 # Consumers
@ -33,9 +32,9 @@ If you're a developer consuming this SDK in your own app, see [Consumers.md](doc

 A primitive example to exercise the SDK exists in this repo, under [Demo App](demo-app).

-There are also more comprehensive sample walletes:
- * [ECC Sample Wallet](https://github.com/zcash/zcash-android-wallet) — A basic sample application.
- * [Secant Sample Wallet](https://github.com/zcash/secant-android-wallet) — A more modern codebase written in Compose.  This repository is a work-in-progress and is not fully functional yet as of August 2022, although it will be our primary sample application in the future.
+There are also more comprehensive wallets:
+ * [SilentDragonAndroid](https://git.hush.is/hush/SilentDragonAndroid) — Official Hush lite wallet for Android
+

 # Maintainers and Contributors
 If you're building the SDK from source or modifying the SDK:
@ -44,9 +43,7 @@ If you're building the SDK from source or modifying the SDK:
 * [CI.md](docs/CI.md) to understand the Continuous Integration build scripts
 * [PUBLISHING.md](docs/PUBLISHING.md) to understand our deployment process

-Note that we aim for the main branch of this repository to be stable and releasable.  We continuously deploy snapshot builds after a merge to the main branch, then manually deploy release builds.  Our continuous deployment of snapshots implies two things:
- * A pull request containing API changes should also bump the version
- * Each pull request should be stable and ready to be consumed, to the best of your knowledge.  Gating unstable functionality behind a flag is perfectly acceptable
+Note that we aim for the main branch of this repository to be stable and releasable.

 ## Known Issues
 1. Intel-based machines may have trouble building in Android Studio.  The workaround is to add the following line to `~/.gradle/gradle.properties`: `ZCASH_IS_DEPENDENCY_LOCKING_ENABLED=false`
@ -64,3 +61,5 @@ We currently rely on mavenLocal publishing for the SDK. Run the following comman
 On Windows you may also need to manually create the following directory if build fails for it not existing:  
 `C:\Users\user\.cargo\git\checkouts\librustzcash-b77c20a46364385a\553c3f6\zcash_client_backend\src\proto`

+NOTE: the commit id above may need to be modified, as it changes.
+
--- a/docs/Architecture.md
+++ b/docs/Architecture.md
@ -1,5 +1,5 @@
 # Overview
-From an app developer's perspective, this SDK will encapsulate the most complex aspects of using Zcash, freeing the developer to focus on UI and UX, rather than scanning blockchains and building commitment trees! Internally, the SDK is structured as follows:
+From an app developer's perspective, this SDK will encapsulate the most complex aspects of using Hush, freeing the developer to focus on UI and UX, rather than scanning blockchains and building commitment trees! Internally, the SDK is structured as follows:

 ![SDK Diagram](assets/sdk_diagram_final.png?raw=true "SDK Diagram")

@ -20,16 +20,9 @@ Thankfully, the only thing an app developer has to be concerned with is the foll
 | **RustBackend**                        | Wraps and simplifies the rust library and exposes its functionality to the Kotlin SDK                                               |

 # Checkpoints
-To improve the speed of syncing with the Zcash network, the SDK contains a series of embedded checkpoints.  These should be updated periodically, as new transactions are added to the network.  Checkpoints are stored under the [sdk-lib's assets](../sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint) directory as JSON files.  Checkpoints for both mainnet and testnet are bundled into the SDK.
+To improve the speed of syncing with the Hush network, the SDK contains a series of embedded checkpoints.  These should be updated periodically, as new transactions are added to the network.  Checkpoints are stored under the [sdk-lib's assets](../sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint) directory as JSON files. 

 To update the checkpoints, see [Checkmate](https://github.com/zcash-hackworks/checkmate).

 We generally recommend adding new checkpoints every few weeks.  By convention, checkpoints are added in block increments of 10,000 which provides a reasonable tradeoff in terms of number of checkpoints versus performance.

-There are two special checkpoints, one for sapling activation and another for orchard activation.  These are mentioned because they don't follow the "round 10,000" rule.
- * Sapling activation
-     * Mainnet: 419200
-     * Testnet: 280000
- * Orchard activation
-     * Mainnet: 1687104
-     * Testnet: 1842420
--- a/responsible_disclosure.md
+++ b/responsible_disclosure.md
@ -1,63 +0,0 @@
-This page is copyright The Electric Coin Company, 2021. It is posted in order to conform to this standard: https://github.com/RD-Crypto-Spec/Responsible-Disclosure/tree/d47a5a3dafa5942c8849a93441745fdd186731e6
-
-# Security Disclosures
-## Receiving Disclosures
-
-The Electric Coin Company is committed to working with researchers who submit security vulnerability notifications to us to resolve those issues on an appropriate timeline and perform a coordinated release, giving credit to the reporter if they would like.
-
-Please submit issues to security@z.cash, using the following PGP key:
-
-```
-----BEGIN PGP PUBLIC KEY BLOCK-----
-
-mQENBFaegcoBCAC+G82ZBYYm1GoVn4dKa0WiLYD/Q+BuU89PS1X7A4eOOy8g9yS4
-wJKMzB0AxFsH/t85P7pPZwHw3i2gmiJKeIqEGhEBL08D3id2u6ZyCnwDuWs0i6My
-MXWTwK5shvE61ZI/KPbjemoOG6MPF5QdrouNqei2Vk+4RjbRCyyS0A59GQi2dNZX
-BMwTnHnUZ5qi6T0RFelqJ3dE5Nc/UwJPdAcg71c3b3dMOHjaDBMPB6+fTLBeidV6
-5B72nGO3eIYkMUNj+qCQmM/esRkmGmlDH/9WGMBOKCq7Yw3LyEoPOi5cba1m8SN2
-xFlNzkUGrlVrwZMF+1UdjvN7BGDypA3Dr/STABEBAAG0JVpjYXNoIFNlY3VyaXR5
-IFRlYW0gPHNlY3VyaXR5QHouY2FzaD6JATcEEwEIACEFAlaegcoCGwMFCwkIBwIG
-FQgJCgsCBBYCAwECHgECF4AACgkQiPuLhti1poxlRAf/bZ6fhUby5bAbViAO4TzQ
-yfbD0ksGeF8MHicPz7HqOYuXAE9GrKnVAOFptwRo94O+iRC5aXhW8OAP+38IWorv
-gsAuag7Y8k0nlfNdrJRqqJpjyxtiuv+cd2o5dre8E9PVNE5IPv9qEJA4Zag3snmC
-a+O4HAqKeXYddunFq2drLkTRlOwuFkGXJzwi3VSNVYCuuGyezFDuaD45ltmsXgid
-jZSdnnc6L1BrEd9LVzahvFV0+fT4bNKQHQDk+f0RTnHed+m9NqAoC9K8ftPTQ/i4
-5+W/dXJATztWDrJ7ZevHXGR+RAhMNsT1psvnQsJzMkUz1GMdQOtk4PfuZLGSIiTM
-ErkBDQRWnoHKAQgAp+w+xsPJWFdadE6Ok1aZC0Lk1J9xU/cqX1aBlkwi5SynwOkV
-Eg1xNHLJMelp13bgDjLRsvaMbsseaCVk3goNln4atNbZpqz6FoM/f8pJx52LFD0j
-CFFOVUlGEF0h+KdFr+3JHI+mg+3ifXTD4Dajj4lpu8kR/FQjftcxyttByz01wLRO
-sK5BDC856WzHXAJuX6TpX4sGJujzKoLXR5V0SkUopqn9g4aJGnWuNh4kyOQI6fd7
-YZyPZhWDrXdgInCKAKAgq8r6hgSDMYFvmflp6+reCfeOe1VFF8q3Foio02YPIrQW
-WjjH0w6nOvOKCEtxistz1sP6ZoYq4gR41LOwIQARAQABiQEfBBgBCAAJBQJWnoHK
-AhsMAAoJEIj7i4bYtaaMiA4IALIy4xP/Btu86yT3b53t8cfYZddFSO8Nlg+y3EMu
-1LchdSOpWgpXCvQ7d4ndWGsuBSmQ+jaRwU2UIkq2iIxf5cg63dJz9grAcF6MXCrO
-t5BSowFC4m3RFaEaG6G6SjDVIA0ZEdEMFd9Gzc1ikqbVLyNuJXKmzz0evvbAJgVO
-D0nht5ifwLjQxM4olvYHUwtT0wPhniH69ghFo8LQiMgncjaukDzbgANiuj07QYy/
-DlzhQUsp1qZvqZnVKqUJ3lFb86b6zoqoRNiUnvP9JB2v3kLG0T39UlcXUFnZJ/4H
-CDHCrwSovQRMHtoOWZijBNobO2y1d0FkUpzNlNw44Ssw0Vo=
-=6GYS
-----END PGP PUBLIC KEY BLOCK-----
-```
-
-## Sending Disclosures
-
-In the case where we become aware of security issues affecting other projects that have never affected Zcash, our intention is to inform those projects of security issues on a best-effort basis.
-
-In the case where we fix a security issue in Zcash that also affects the following neighboring projects, our intention is to engage in responsible disclosures with them as described in https://github.com/RD-Crypto-Spec/Responsible-Disclosure, subject to the deviations described in the section at the bottom of this document.
-
-## Bilateral Responsible Disclosure Agreements
-
-We have set up agreements with the following neighboring projects to share vulnerability information, subject to the deviations described in the next section.
-
-Specifically, we have agreed to engage in responsible disclosures for security issues affecting this repository and others we maintain for the same platform with the following contacts:
-
- Unstoppable wallet via PGP email to security.hs@protonmail.com
- Nighthawk wallet via their disclosure policy @ https://github.com/nighthawk-apps/nighthawk-wallet-android/blob/master/README.md 
-
-## Deviations from the Standard
-
-Zcash is a technology that provides strong privacy. Notes are encrypted to their destination, and then the monetary base is kept via zero-knowledge proofs intended to only be creatable by the real holder of Zcash. If this fails, and a counterfeiting bug results, that counterfeiting bug might be exploited without any way for blockchain analyzers to identify the perpetrator or which data in the blockchain has been used to exploit the bug. Rollbacks to before that point, such as have been executed in some other projects in such cases, are therefore impossible.
-
-The standard describes reporters of vulnerabilities including full details of an issue, in order to reproduce it. This is necessary for instance in the case of an external researcher both demonstrating and proving that there really is a security issue, and that security issue really has the impact that they say it has - allowing the development team to accurately prioritize and resolve the issue.
-
-In the case of a counterfeiting bug, however, just like in CVE-2019-7167, we might decide not to include those details with our reports to partners ahead of coordinated release, so long as we are sure that they are vulnerable.
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1430000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1430000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1430000",
+	"hash": "000000066375bf5edfb65bec45cfa47042b47e3aea87da9236da5b9f4ca70f84",
+	"time": 1689465399,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1440000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1440000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1440000",
+	"hash": "00000001025150e823cedbe98c30f09385017b229bc247420d43854ddb1c4ff0",
+	"time": 1690223450,
+	"saplingTree": "01c96fa25dd7e8d53195f97031006d2cb1f2758c4b12fef11b588de57c69784455001501d3c916889978629148d469916a9d9b5770ac23657d69989e3e4fde867ff6c04b016c46a62678cea4266cc095d7f287bb3f5bb5dcc0d408a921d210843cab43227201dc162e6835b6b9e5c930ae8bab60ecf12fe735ae20355e5681d6fb0d78a4254f0001a708465a549e5798486fe87a2dfb0732e35974248cf14ec7840cda4bf5424f6201935fcb60099ad7fdf6b06fe286c5d95e25210e4826ecfe432af130f7eb6da472000001c4954e9df77cc98c76c6ee8c266ddf7bb193e4284cd39f3f9288f55e72cd920300014b8ed9563d4cbd1fd3e278bc201509a95645ff5414ba8b5dc3734cd5dcd966210111921d0b1f05672fb165599bed630e0cf8267e832b4c4ec4e6154e880e100f3f00019309b9363ebf08e38aa5ba8a8937532af004fb2d0c77f0b306b1e928516f702800012a5cc87bee766002799c55ceb4811e7f7393a1e6a4cbec47deffc5f5545c0e630129e917c1084ce9790872926426d49c072d65efba4028dc1d29c4ff163f2f794001007357498cf229fb2aa34a72ecff748d7aa6f1a4e486f3eecf8a57673ad0ce340001708c9850eb440b259f233187662c5228804cb4500263949301b6fac8f6428f2301d6f84c424acdb1d10f8cef641662e0f63f954f07fe6199d504a61979c9ba3e13"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1450000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1450000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1450000",
+	"hash": "00000001ba8b62f62c313bad5f3e5e5b1068060e7b52855a703575e8b999e980",
+	"time": 1690981181,
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+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1460000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1460000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1460000",
+	"hash": "00000005153ae6e0e3f6dabd9ae9c3e02cbb2cdd61fc9cc697f94a943d3e7c31",
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+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1470000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1470000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1470000",
+	"hash": "00000001be9faf4c236b5925b9d82a843c98fdecb0db32a7b971c7f0e06ae686",
+	"time": 1692496311,
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+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1480000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1480000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1480000",
+	"hash": "000000061fc1275ef78b285aec0a73edc82861a0d390503c3b4c5455d8242acc",
+	"time": 1693253685,
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+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1490000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1490000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1490000",
+	"hash": "00000002271c1f284ad47cfc27332ea820045602f62381dd10cdfe77cbf73cce",
+	"time": 1694011030,
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+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1500000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1500000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1500000",
+	"hash": "0000000015757461b6c1169980a8be062898c1aca4861e45290bb2f07edac0fa",
+	"time": 1694769330,
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+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1510000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1510000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1510000",
+	"hash": "00000003a10174289817f24b4c8f60378e2f075e6bba3fce06e766e5f6eb90f1",
+	"time": 1695526960,
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+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1520000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1520000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1520000",
+	"hash": "00000007fba88eea7c09076fa7693b7ef39feb161bd7d96299deff6f16887ce7",
+	"time": 1696283960,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1530000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1530000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1530000",
+	"hash": "000000027efbba859044503a52fd35ea1a1fac64e6b159dbdcebcf861f521396",
+	"time": 1697038908,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1540000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1540000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1540000",
+	"hash": "000000093b7b4861ec7cf9c1262ac89815b515160e383819383ae2bce4d9d15a",
+	"time": 1697795052,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1550000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1550000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1550000",
+	"hash": "00000000b6414f92b836b1a6400976ea986216b28ab041ea038844d3c56683b7",
+	"time": 1698556455,
+	"saplingTree": "012959a80b2361c3caf552ac681ac8ee53d4f7d7918d7efecf241b955cddffae06001501f854b0728fdb8b83e14988ae5c6f7a152bb8815e3b56b2ac44c07df8644f512e000000000001c5211557d874cad6c86442b2d6ab582ad40b504f50839684939d06fe0542793d0138f66e9b6eb361417a9004c6d7fff767873e697d12a1e16ffb5cd347327e650d015bf7b25e2d937ca6903efcb779bfb0a523bbf5d6498be86d07e80ef6207e331200000000000125c334cd519e383870df442ed17c7472f684244fffd16f3b98210b6166dfde4400000001491139c6c100cdd9176607c63fa695709727d919634d2983a9412c3010ed6d3d01708c9850eb440b259f233187662c5228804cb4500263949301b6fac8f6428f2301d6f84c424acdb1d10f8cef641662e0f63f954f07fe6199d504a61979c9ba3e13"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1560000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1560000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1560000",
+	"hash": "0000000b6295fcf534ba222c7d68b5ee14445e2519a62c512cfd3010778d044a",
+	"time": 1699312762,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1570000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1570000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1570000",
+	"hash": "000000069f9bdf236df00a42975f1ec785fb915e900e044352043c6ecb1cb34d",
+	"time": 1700068836,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1580000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1580000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1580000",
+	"hash": "0000000897f1f891389334c3cc14841378246bd7666232b52a1a755ac092f8a5",
+	"time": 1700827904,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1590000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1590000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1590000",
+	"hash": "0000000124680145c0bef5178b36aab191b7e59a456d7df83c4696eaaec17beb",
+	"time": 1701578363,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1600000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1600000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1600000",
+	"hash": "0000000e4dfb00523f8535e5bbc66401dc0aed33ffcba721c275ca0a35f2477b",
+	"time": 1702338930,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1610000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1610000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1610000",
+	"hash": "00000000318ea4aea52e334b9b3f8bf91e63fe485468936bba68485ae1095a46",
+	"time": 1703092716,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1620000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1620000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1620000",
+	"hash": "000000048c6667a8724512cbd999bc491ec8522b1f3817001c7ba485dec46d10",
+	"time": 1703846198,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1630000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1630000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1630000",
+	"hash": "000000032c724b40a4fb6d3e613aed9f294f22b76fc30b6caaa3bfe7ce3b01ad",
+	"time": 1704599326,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1640000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1640000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1640000",
+	"hash": "00000000d6605a8a213fa134a2bf74cc901a42d0706718090788d6915c7ebbfd",
+	"time": 1705353446,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1650000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1650000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1650000",
+	"hash": "00000000922fca1c2ab235f6592387433c0622665408caf1a689d588acd7ef4a",
+	"time": 1706106725,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1660000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1660000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1660000",
+	"hash": "000000049e13deb195724e2a64bf4d7a476b44d67d9779a321cdc32f2363c691",
+	"time": 1706860241,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1670000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1670000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1670000",
+	"hash": "00000001d70644f12e0ed97832baea5d8d52b4109c3eb6d13628ca61c6983af6",
+	"time": 1707613638,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1680000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1680000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1680000",
+	"hash": "00000005910f9f52c1b2c386a051811f11d3eaa4c737dcce58ab3cc37fcd62fb",
+	"time": 1708369566,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1690000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1690000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1690000",
+	"hash": "00000002dbbef67d168a562e36ba850e15acfad1172d1134df4f1f4288c9d865",
+	"time": 1709123120,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1700000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1700000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1700000",
+	"hash": "00000001c8a7698cd8594605fed3594a8a576535d94f3440ba69b2ec01706e2f",
+	"time": 1709876193,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1710000.json
+++ b/sdk-lib/src/main/assets/co.electriccoin.zcash/checkpoint/mainnet/1710000.json
@ -0,0 +1,7 @@
+{
+	"network": "main",
+	"height": "1710000",
+	"hash": "00000003b17400949f2f3c82142eca4c6590e863f657b64a3dbe7f79fccf38d0",
+	"time": 1710630223,
+	"saplingTree": "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"
+}
--- a/sdk-lib/src/main/java/cash/z/ecc/android/sdk/ext/ZcashSdk.kt
+++ b/sdk-lib/src/main/java/cash/z/ecc/android/sdk/ext/ZcashSdk.kt
@ -37,19 +37,19 @@ object ZcashSdk {
    // Because blocks are buffered in memory upon download and storage into SQLite, there is an upper bound
    // above which OutOfMemoryError is thrown. Experimentally, this value is below 50 blocks.
    // Back of the envelope calculation says the maximum block size is ~100kb.
-    const val DOWNLOAD_BATCH_SIZE = 10
+    const val DOWNLOAD_BATCH_SIZE = 50

    /**
     * Default size of batches of blocks to scan via librustzcash. The smaller this number the more granular information
     * can be provided about scan state. Unfortunately, it may also lead to a lot of overhead during scanning.
     */
-    val SCAN_BATCH_SIZE = 150
+    val SCAN_BATCH_SIZE = 500

    /**
     * Default amount of time, in milliseconds, to poll for new blocks. Typically, this should be about half the average
     * block time.
     */
-    val POLL_INTERVAL = 20_000L
+    val POLL_INTERVAL = 38_000L

    /**
     * Estimate of the time between blocks.
@ -87,11 +87,13 @@ object ZcashSdk {
    val OUTPUT_PARAM_FILE_NAME = "sapling-output.params"

    /**
-     * The Url that is used by default in zcashd.
+     * The Url that is used by default in hushd.
     * We'll want to make this externally configurable, rather than baking it into the SDK but
-     * this will do for now, since we're using a cloudfront URL that already redirects.
+     * this will do for now
     */
-    val CLOUD_PARAM_DIR_URL = "https://z.cash/downloads/"
+    val CLOUD_PARAM_DIR_URL = listOf("https://storage.hush.land/hush3/",
+        "https://git.hush.is/hush/hush3/raw/branch/master/",
+        "https://github.com/hushmirror/hush3/raw/dev/")

    /**
     * The default memo to use when shielding transparent funds.
--- a/sdk-lib/src/main/java/cash/z/ecc/android/sdk/internal/SaplingParamTool.kt
+++ b/sdk-lib/src/main/java/cash/z/ecc/android/sdk/internal/SaplingParamTool.kt
@ -57,7 +57,8 @@ class SaplingParamTool {
                ZcashSdk.SPEND_PARAM_FILE_NAME,
                ZcashSdk.OUTPUT_PARAM_FILE_NAME
            ).forEach { paramFileName ->
-                val url = "${ZcashSdk.CLOUD_PARAM_DIR_URL}/$paramFileName"
+                val url = "${ZcashSdk.CLOUD_PARAM_DIR_URL.random()}/$paramFileName"
+                twig("Downloading Sapling params from ${url}...")
                val request = Request.Builder().url(url).build()
                val response = withContext(Dispatchers.IO) { client.newCall(request).execute() }
                if (response.isSuccessful) {
Author	SHA1	Message	Date
fekt	e4e37e54e1	Update checkpoints to 1710000	2 months ago
fekt	37308230a9	Merge pull request 'Merge dev' (#5 ) from dev into main Reviewed-on: https://git.hush.is/hush/hush-android-wallet-sdk/pulls/5	7 months ago
fekt	43b101dfff	Updated checkpoints to 1540000	7 months ago
fekt	98b2a8c298	Additional params URL	8 months ago
fekt	2cf8b68d75	Checkpoints	8 months ago
fekt	15e3f063d0	Performance and param URL tweaks	8 months ago
fekt	c97205fb4e	Merge pull request 'main' (#3 ) from fekt/hush-android-wallet-sdk:main into main Reviewed-on: https://git.hush.is/hush/hush-android-wallet-sdk/pulls/3	10 months ago
fekt	2a21e70030	Merge pull request Reviewed-on: https://git.hush.is/hush/hush-android-wallet-sdk/pulls/2	1 year ago
duke	653b8d2f5b	Update 'docs/Architecture.md'	1 year ago
duke	01c51a2c4f	Delete 'responsible_disclosure.md'	1 year ago
duke	74e4ce8e90	Update 'CONTRIBUTING.md'	1 year ago
duke	1ee5c6c585	Update license to GPLv3	1 year ago
duke	7dcd527aff	Update 'README.md'	1 year ago