diff --git a/CHANGELOG.md b/CHANGELOG.md
index 27bb9f01..20e7a520 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,29 @@ Possible errors:
 - `ZcashError.rustProposeTransferFromURI`
 - Other errors that `sentToAddress` can throw
 
+## Removed
+
+- `SDKSynchronizer.latestUTXOs`
+
+## Checkpoints
+
+Mainnet
+
+````
+Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2430000.json
+...
+Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2447500.json
+````
+
+
+Testnet
+
+````
+Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2750000.json
+...
+Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2770000.json
+````
+
 # 2.0.11 - 2024-03-08
 
 ## Changed
diff --git a/Example/ZcashLightClientSample/ZcashLightClientSample.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved b/Example/ZcashLightClientSample/ZcashLightClientSample.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
index 15d91fe3..4e776bb1 100644
--- a/Example/ZcashLightClientSample/ZcashLightClientSample.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
+++ b/Example/ZcashLightClientSample/ZcashLightClientSample.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved
@@ -176,8 +176,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/zcash-hackworks/zcash-light-client-ffi",
       "state" : {
-        "revision" : "7c801be1f445402a433b32835a50d832e8a50437",
-        "version" : "0.6.0"
+        "revision" : "c7e5158edf5e62af15492d30237163b78af35ce9",
+        "version" : "0.7.1"
       }
     }
   ],
diff --git a/Package.resolved b/Package.resolved
index 6ed2aaaf..cb45488b 100644
--- a/Package.resolved
+++ b/Package.resolved
@@ -122,8 +122,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/zcash-hackworks/zcash-light-client-ffi",
       "state" : {
-        "revision" : "7c801be1f445402a433b32835a50d832e8a50437",
-        "version" : "0.6.0"
+        "revision" : "c7e5158edf5e62af15492d30237163b78af35ce9",
+        "version" : "0.7.1"
       }
     }
   ],
diff --git a/Package.swift b/Package.swift
index f86b18e9..cf2b1d4c 100644
--- a/Package.swift
+++ b/Package.swift
@@ -16,7 +16,7 @@ let package = Package(
     dependencies: [
         .package(url: "https://github.com/grpc/grpc-swift.git", from: "1.19.1"),
         .package(url: "https://github.com/stephencelis/SQLite.swift.git", from: "0.14.1"),
-        .package(url: "https://github.com/zcash-hackworks/zcash-light-client-ffi", exact: "0.6.0")
+        .package(url: "https://github.com/zcash-hackworks/zcash-light-client-ffi", exact: "0.7.1")
     ],
     targets: [
         .target(
diff --git a/Sources/ZcashLightClientKit/Block/CompactBlockProcessor.swift b/Sources/ZcashLightClientKit/Block/CompactBlockProcessor.swift
index 4eb567ef..81f48917 100644
--- a/Sources/ZcashLightClientKit/Block/CompactBlockProcessor.swift
+++ b/Sources/ZcashLightClientKit/Block/CompactBlockProcessor.swift
@@ -28,7 +28,6 @@ actor CompactBlockProcessor {
     private let configProvider: ConfigProvider
     private var afterSyncHooksManager = AfterSyncHooksManager()
 
-    private let accountRepository: AccountRepository
     var blockDownloaderService: BlockDownloaderService
     private var latestBlocksDataProvider: LatestBlocksDataProvider
     private let logger: Logger
@@ -142,20 +141,6 @@ actor CompactBlockProcessor {
         }
     }
 
-    /// Initializes a CompactBlockProcessor instance
-    /// - Parameters:
-    ///  - service: concrete implementation of `LightWalletService` protocol
-    ///  - storage: concrete implementation of `CompactBlockRepository` protocol
-    ///  - backend: a class that complies to `ZcashRustBackendWelding`
-    ///  - config: `Configuration` struct for this processor
-    init(container: DIContainer, config: Configuration) {
-        self.init(
-            container: container,
-            config: config,
-            accountRepository: AccountRepositoryBuilder.build(dataDbURL: config.dataDb, readOnly: true, logger: container.resolve(Logger.self))
-        )
-    }
-
     /// Initializes a CompactBlockProcessor instance from an Initialized object
     /// - Parameters:
     ///     - initializer: an instance that complies to CompactBlockDownloading protocol
@@ -171,20 +156,23 @@ actor CompactBlockProcessor {
                 saplingParamsSourceURL: initializer.saplingParamsSourceURL,
                 walletBirthdayProvider: walletBirthdayProvider,
                 network: initializer.network
-            ),
-            accountRepository: initializer.accountRepository
+            )
         )
     }
 
+    /// Initializes a CompactBlockProcessor instance
+    /// - Parameters:
+    ///  - service: concrete implementation of `LightWalletService` protocol
+    ///  - storage: concrete implementation of `CompactBlockRepository` protocol
+    ///  - backend: a class that complies to `ZcashRustBackendWelding`
+    ///  - config: `Configuration` struct for this processor
     init(
         container: DIContainer,
-        config: Configuration,
-        accountRepository: AccountRepository
+        config: Configuration
     ) {
         Dependencies.setupCompactBlockProcessor(
             in: container,
-            config: config,
-            accountRepository: accountRepository
+            config: config
         )
 
         let configProvider = ConfigProvider(config: config)
@@ -200,7 +188,6 @@ actor CompactBlockProcessor {
         self.storage = container.resolve(CompactBlockRepository.self)
         self.config = config
         self.transactionRepository = container.resolve(TransactionRepository.self)
-        self.accountRepository = accountRepository
         self.fileManager = container.resolve(ZcashFileManager.self)
         self.configProvider = configProvider
     }
diff --git a/Sources/ZcashLightClientKit/Block/FetchUnspentTxOutputs/UTXOFetcher.swift b/Sources/ZcashLightClientKit/Block/FetchUnspentTxOutputs/UTXOFetcher.swift
index bbff3986..f9c51229 100644
--- a/Sources/ZcashLightClientKit/Block/FetchUnspentTxOutputs/UTXOFetcher.swift
+++ b/Sources/ZcashLightClientKit/Block/FetchUnspentTxOutputs/UTXOFetcher.swift
@@ -23,7 +23,6 @@ protocol UTXOFetcher {
 }
 
 struct UTXOFetcherImpl {
-    let accountRepository: AccountRepository
     let blockDownloaderService: BlockDownloaderService
     let config: UTXOFetcherConfig
     let rustBackend: ZcashRustBackendWelding
@@ -37,8 +36,7 @@ extension UTXOFetcherImpl: UTXOFetcher {
     ) async throws -> (inserted: [UnspentTransactionOutputEntity], skipped: [UnspentTransactionOutputEntity]) {
         try Task.checkCancellation()
 
-        let accounts = try accountRepository.getAll()
-            .map { $0.account }
+        let accounts = try await rustBackend.listAccounts()
 
         var tAddresses: [TransparentAddress] = []
         for account in accounts {
diff --git a/Sources/ZcashLightClientKit/Block/Scan/BlockScanner.swift b/Sources/ZcashLightClientKit/Block/Scan/BlockScanner.swift
index cf203f6b..48d38d4d 100644
--- a/Sources/ZcashLightClientKit/Block/Scan/BlockScanner.swift
+++ b/Sources/ZcashLightClientKit/Block/Scan/BlockScanner.swift
@@ -23,6 +23,7 @@ protocol BlockScanner {
 struct BlockScannerImpl {
     let config: BlockScannerConfig
     let rustBackend: ZcashRustBackendWelding
+    let service: LightWalletService
     let transactionRepository: TransactionRepository
     let metrics: SDKMetrics
     let logger: Logger
@@ -56,7 +57,9 @@ extension BlockScannerImpl: BlockScanner {
             let scanSummary: ScanSummary
             let scanStartTime = Date()
             do {
-                scanSummary = try await self.rustBackend.scanBlocks(fromHeight: Int32(startHeight), limit: batchSize)
+                let fromState = try await service.getTreeState(BlockID(height: startHeight - 1))
+
+                scanSummary = try await self.rustBackend.scanBlocks(fromHeight: Int32(startHeight), fromState: fromState, limit: batchSize)
             } catch {
                 logger.debug("block scanning failed with error: \(String(describing: error))")
                 throw error
diff --git a/Sources/ZcashLightClientKit/DAO/UnspentTransactionOutputDao.swift b/Sources/ZcashLightClientKit/DAO/UnspentTransactionOutputDao.swift
index e5561c74..ce3a32c4 100644
--- a/Sources/ZcashLightClientKit/DAO/UnspentTransactionOutputDao.swift
+++ b/Sources/ZcashLightClientKit/DAO/UnspentTransactionOutputDao.swift
@@ -8,25 +8,12 @@
 import Foundation
 
 struct UTXO: Decodable, Encodable {
-    enum CodingKeys: String, CodingKey {
-        case id = "id_utxo"
-        case address
-        case prevoutTxId = "prevout_txid"
-        case prevoutIndex = "prevout_idx"
-        case script
-        case valueZat = "value_zat"
-        case height
-        case spentInTx = "spent_in_tx"
-    }
-    
-    let id: Int?
     let address: String
     var prevoutTxId: Data
     var prevoutIndex: Int
     let script: Data
     let valueZat: Int
     let height: Int
-    let spentInTx: Int?
 }
 
 extension UTXO: UnspentTransactionOutputEntity {
@@ -48,145 +35,3 @@ extension UTXO: UnspentTransactionOutputEntity {
         }
     }
 }
-
-extension UnspentTransactionOutputEntity {
-    /**
-    As UTXO, with id and spentIntTx set to __nil__
-    */
-    func asUTXO() -> UTXO {
-        UTXO(
-            id: nil,
-            address: address,
-            prevoutTxId: txid,
-            prevoutIndex: index,
-            script: script,
-            valueZat: valueZat,
-            height: height,
-            spentInTx: nil
-        )
-    }
-}
-import SQLite
-class UnspentTransactionOutputSQLDAO: UnspentTransactionOutputRepository {
-    enum TableColumns {
-        static let id = Expression<Int>("id_utxo")
-        static let address = Expression<String>("address")
-        static let txid = Expression<Blob>("prevout_txid")
-        static let index = Expression<Int>("prevout_idx")
-        static let script = Expression<Blob>("script")
-        static let valueZat = Expression<Int>("value_zat")
-        static let height = Expression<Int>("height")
-        static let spentInTx = Expression<Int?>("spent_in_tx")
-    }
-
-    let table = Table("utxos")
-
-    let dbProvider: ConnectionProvider
-    
-    init(dbProvider: ConnectionProvider) {
-        self.dbProvider = dbProvider
-    }
-
-    /// - Throws: `unspentTransactionOutputDAOCreateTable` if creation table fails.
-    func initialise() async throws {
-        try await createTableIfNeeded()
-    }
-    
-    private func createTableIfNeeded() async throws {
-        let stringStatement =
-            """
-            CREATE TABLE IF NOT EXISTS utxos (
-                id_utxo INTEGER PRIMARY KEY,
-                address TEXT NOT NULL,
-                prevout_txid BLOB NOT NULL,
-                prevout_idx INTEGER NOT NULL,
-                script BLOB NOT NULL,
-                value_zat INTEGER NOT NULL,
-                height INTEGER NOT NULL,
-                spent_in_tx INTEGER,
-                FOREIGN KEY (spent_in_tx) REFERENCES transactions(id_tx),
-                CONSTRAINT tx_outpoint UNIQUE (prevout_txid, prevout_idx)
-            )
-            """
-        do {
-            globalDBLock.lock()
-            defer { globalDBLock.unlock() }
-            
-            try dbProvider.connection().run(stringStatement)
-        } catch {
-            throw ZcashError.unspentTransactionOutputDAOCreateTable(error)
-        }
-    }
-
-    /// - Throws: `unspentTransactionOutputDAOStore` if sqlite query fails.
-    func store(utxos: [UnspentTransactionOutputEntity]) async throws {
-        do {
-            globalDBLock.lock()
-            defer { globalDBLock.unlock() }
-
-            let db = try dbProvider.connection()
-            try db.transaction {
-                for utxo in utxos.map({ $0 as? UTXO ?? $0.asUTXO() }) {
-                    try db.run(table.insert(utxo))
-                }
-            }
-        } catch {
-            throw ZcashError.unspentTransactionOutputDAOStore(error)
-        }
-    }
-
-    /// - Throws: `unspentTransactionOutputDAOClearAll` if sqlite query fails.
-    func clearAll(address: String?) async throws {
-        do {
-            globalDBLock.lock()
-            defer { globalDBLock.unlock() }
-
-            if let tAddr = address {
-                try dbProvider.connection().run(table.filter(TableColumns.address == tAddr).delete())
-            } else {
-                try dbProvider.connection().run(table.delete())
-            }
-        } catch {
-            throw ZcashError.unspentTransactionOutputDAOClearAll(error)
-        }
-    }
-
-    ///  - Throws:
-    ///     - `unspentTransactionOutputDAOClearAll` if the data fetched from the DB can't be decoded to `UTXO` object.
-    ///     - `unspentTransactionOutputDAOGetAll` if sqlite query fails.
-    func getAll(address: String?) async throws -> [UnspentTransactionOutputEntity] {
-        do {
-            if let tAddress = address {
-                let allTxs: [UTXO] = try dbProvider.connection()
-                    .prepare(table.filter(TableColumns.address == tAddress))
-                    .map { row in
-                        do {
-                            return try row.decode()
-                        } catch {
-                            throw ZcashError.unspentTransactionOutputDAOGetAllCantDecode(error)
-                        }
-                    }
-                return allTxs
-            } else {
-                let allTxs: [UTXO] = try dbProvider.connection()
-                    .prepare(table)
-                    .map { row in
-                        try row.decode()
-                    }
-                return allTxs
-            }
-        } catch {
-            if let error = error as? ZcashError {
-                throw error
-            } else {
-                throw ZcashError.unspentTransactionOutputDAOGetAll(error)
-            }
-        }
-    }
-}
-
-enum UTXORepositoryBuilder {
-    static func build(initializer: Initializer) -> UnspentTransactionOutputRepository {
-        return UnspentTransactionOutputSQLDAO(dbProvider: SimpleConnectionProvider(path: initializer.dataDbURL.path))
-    }
-}
diff --git a/Sources/ZcashLightClientKit/Entity/AccountEntity.swift b/Sources/ZcashLightClientKit/Entity/AccountEntity.swift
index 32e7c710..17d83742 100644
--- a/Sources/ZcashLightClientKit/Entity/AccountEntity.swift
+++ b/Sources/ZcashLightClientKit/Entity/AccountEntity.swift
@@ -14,11 +14,6 @@ protocol AccountEntity {
 }
 
 struct DbAccount: AccountEntity, Encodable, Decodable {
-    enum CodingKeys: String, CodingKey {
-        case account
-        case ufvk
-    }
-    
     let account: Int
     let ufvk: String
 }
@@ -38,171 +33,3 @@ extension DbAccount: Hashable {
         return true
     }
 }
-
-protocol AccountRepository {
-    func getAll() throws -> [AccountEntity]
-    func findBy(account: Int) throws -> AccountEntity?
-    func update(_ account: AccountEntity) throws
-}
-
-class AccountSQDAO: AccountRepository {
-    enum TableColums {
-        static let account = Expression<Int>("account")
-        static let extfvk = Expression<String>("ufvk")
-    }
-
-    let table = Table("accounts")
-
-    let dbProvider: ConnectionProvider
-    let logger: Logger
-    
-    init(dbProvider: ConnectionProvider, logger: Logger) {
-        self.dbProvider = dbProvider
-        self.logger = logger
-    }
-
-    /// - Throws:
-    ///     - `accountDAOGetAllCantDecode` if account data fetched from the db can't be decoded to the `Account` object.
-    ///     - `accountDAOGetAll` if sqlite query fetching account data failed.
-    func getAll() throws -> [AccountEntity] {
-        do {
-            globalDBLock.lock()
-            defer { globalDBLock.unlock() }
-            
-            return try dbProvider.connection()
-                .prepare(table)
-                .map { row -> DbAccount in
-                    do {
-                        return try row.decode()
-                    } catch {
-                        throw ZcashError.accountDAOGetAllCantDecode(error)
-                    }
-                }
-        } catch {
-            if let error = error as? ZcashError {
-                throw error
-            } else {
-                throw ZcashError.accountDAOGetAll(error)
-            }
-        }
-    }
-
-    /// - Throws:
-    ///     - `accountDAOFindByCantDecode` if account data fetched from the db can't be decoded to the `Account` object.
-    ///     - `accountDAOFindBy` if sqlite query fetching account data failed.
-    func findBy(account: Int) throws -> AccountEntity? {
-        let query = table.filter(TableColums.account == account).limit(1)
-        do {
-            globalDBLock.lock()
-            defer { globalDBLock.unlock() }
-
-            return try dbProvider.connection()
-                .prepare(query)
-                .map {
-                    do {
-                        return try $0.decode() as DbAccount
-                    } catch {
-                        throw ZcashError.accountDAOFindByCantDecode(error)
-                    }
-                }
-                .first
-        } catch {
-            if let error = error as? ZcashError {
-                throw error
-            } else {
-                throw ZcashError.accountDAOFindBy(error)
-            }
-        }
-    }
-
-    /// - Throws:
-    ///     - `accountDAOUpdate` if sqlite query updating account failed.
-    ///     - `accountDAOUpdatedZeroRows` if sqlite query updating account pass but it affects 0 rows.
-    func update(_ account: AccountEntity) throws {
-        guard let acc = account as? DbAccount else {
-            throw ZcashError.accountDAOUpdateInvalidAccount
-        }
-
-        let updatedRows: Int
-        do {
-            globalDBLock.lock()
-            defer { globalDBLock.unlock() }
-
-            updatedRows = try dbProvider.connection().run(table.filter(TableColums.account == acc.account).update(acc))
-        } catch {
-            throw ZcashError.accountDAOUpdate(error)
-        }
-
-        if updatedRows == 0 {
-            logger.error("attempted to update pending transactions but no rows were updated")
-            throw ZcashError.accountDAOUpdatedZeroRows
-        }
-    }
-}
-
-class CachingAccountDao: AccountRepository {
-    let dao: AccountRepository
-    lazy var cache: [Int: AccountEntity] = {
-        var accountCache: [Int: AccountEntity] = [:]
-        guard let all = try? dao.getAll() else {
-            return accountCache
-        }
-
-        for acc in all {
-            accountCache[acc.account] = acc
-        }
-
-        return accountCache
-    }()
-    
-    init(dao: AccountRepository) {
-        self.dao = dao
-    }
-    
-    func getAll() throws -> [AccountEntity] {
-        guard cache.isEmpty else {
-            return cache.values.sorted(by: { $0.account < $1.account })
-        }
-
-        let all = try dao.getAll()
-        
-        for acc in all {
-            cache[acc.account] = acc
-        }
-
-        return all
-    }
-    
-    func findBy(account: Int) throws -> AccountEntity? {
-        if let acc = cache[account] {
-            return acc
-        }
-        
-        let acc = try dao.findBy(account: account)
-        cache[account] = acc
-
-        return acc
-    }
-        
-    func update(_ account: AccountEntity) throws {
-        try dao.update(account)
-    }
-}
-
-enum AccountRepositoryBuilder {
-    static func build(dataDbURL: URL, readOnly: Bool = false, caching: Bool = false, logger: Logger) -> AccountRepository {
-        if caching {
-            return CachingAccountDao(
-                dao: AccountSQDAO(
-                    dbProvider: SimpleConnectionProvider(path: dataDbURL.path, readonly: readOnly),
-                    logger: logger
-                )
-            )
-        } else {
-            return AccountSQDAO(
-                dbProvider: SimpleConnectionProvider(path: dataDbURL.path, readonly: readOnly),
-                logger: logger
-            )
-        }
-    }
-}
diff --git a/Sources/ZcashLightClientKit/Entity/TransactionEntity.swift b/Sources/ZcashLightClientKit/Entity/TransactionEntity.swift
index f52f816c..2a2189b5 100644
--- a/Sources/ZcashLightClientKit/Entity/TransactionEntity.swift
+++ b/Sources/ZcashLightClientKit/Entity/TransactionEntity.swift
@@ -65,6 +65,7 @@ public enum ZcashTransaction {
         public enum Pool {
             case transaparent
             case sapling
+            case orchard
             case other(Int)
             init(rawValue: Int) {
                 switch rawValue {
@@ -72,6 +73,8 @@ public enum ZcashTransaction {
                     self = .transaparent
                 case 2:
                     self = .sapling
+                case 3:
+                    self = .orchard
                 default:
                     self = .other(rawValue)
                 }
@@ -101,8 +104,8 @@ extension ZcashTransaction.Output {
         static let rawID = Expression<Blob>("txid")
         static let pool = Expression<Int>("output_pool")
         static let index = Expression<Int>("output_index")
-        static let toAccount = Expression<Int?>("to_account")
-        static let fromAccount = Expression<Int?>("from_account")
+        static let toAccount = Expression<Int?>("to_account_id")
+        static let fromAccount = Expression<Int?>("from_account_id")
         static let toAddress = Expression<String?>("to_address")
         static let value = Expression<Int64>("value")
         static let isChange = Expression<Bool>("is_change")
diff --git a/Sources/ZcashLightClientKit/Error/ZcashError.swift b/Sources/ZcashLightClientKit/Error/ZcashError.swift
index 069ef7c3..40a48134 100644
--- a/Sources/ZcashLightClientKit/Error/ZcashError.swift
+++ b/Sources/ZcashLightClientKit/Error/ZcashError.swift
@@ -325,6 +325,14 @@ public enum ZcashError: Equatable, Error {
     /// - `rustError` contains error generated by the rust layer.
     /// ZRUST0057
     case rustProposeTransferFromURI(_ rustError: String)
+    /// Error from rust layer when calling ZcashRustBackend.
+    /// - `rustError` contains error generated by the rust layer.
+    /// ZRUST0058
+    case rustListAccounts(_ rustError: String)
+    /// Error from rust layer when calling ZcashRustBackend.rustIsSeedRelevantToAnyDerivedAccount
+    /// - `rustError` contains error generated by the rust layer.
+    /// ZRUST0059
+    case rustIsSeedRelevantToAnyDerivedAccount(_ rustError: String)
     /// SQLite query failed when fetching all accounts from the database.
     /// - `sqliteError` is error produced by SQLite library.
     /// ZADAO0001
@@ -681,6 +689,8 @@ public enum ZcashError: Equatable, Error {
         case .rustScanProgressOutOfRange: return "Rust layer's call ZcashRustBackend.getScanProgress returned values that after computation are outside of allowed range 0-100%."
         case .rustGetWalletSummary: return "Error from rust layer when calling ZcashRustBackend.getWalletSummary"
         case .rustProposeTransferFromURI: return "Error from rust layer when calling ZcashRustBackend."
+        case .rustListAccounts: return "Error from rust layer when calling ZcashRustBackend."
+        case .rustIsSeedRelevantToAnyDerivedAccount: return "Error from rust layer when calling ZcashRustBackend.rustIsSeedRelevantToAnyDerivedAccount"
         case .accountDAOGetAll: return "SQLite query failed when fetching all accounts from the database."
         case .accountDAOGetAllCantDecode: return "Fetched accounts from SQLite but can't decode them."
         case .accountDAOFindBy: return "SQLite query failed when seaching for accounts in the database."
@@ -856,6 +866,8 @@ public enum ZcashError: Equatable, Error {
         case .rustScanProgressOutOfRange: return .rustScanProgressOutOfRange
         case .rustGetWalletSummary: return .rustGetWalletSummary
         case .rustProposeTransferFromURI: return .rustProposeTransferFromURI
+        case .rustListAccounts: return .rustListAccounts
+        case .rustIsSeedRelevantToAnyDerivedAccount: return .rustIsSeedRelevantToAnyDerivedAccount
         case .accountDAOGetAll: return .accountDAOGetAll
         case .accountDAOGetAllCantDecode: return .accountDAOGetAllCantDecode
         case .accountDAOFindBy: return .accountDAOFindBy
diff --git a/Sources/ZcashLightClientKit/Error/ZcashErrorCode.swift b/Sources/ZcashLightClientKit/Error/ZcashErrorCode.swift
index 8290036a..58203333 100644
--- a/Sources/ZcashLightClientKit/Error/ZcashErrorCode.swift
+++ b/Sources/ZcashLightClientKit/Error/ZcashErrorCode.swift
@@ -177,6 +177,10 @@ public enum ZcashErrorCode: String {
     case rustGetWalletSummary = "ZRUST0056"
     /// Error from rust layer when calling ZcashRustBackend.
     case rustProposeTransferFromURI = "ZRUST0057"
+    /// Error from rust layer when calling ZcashRustBackend.
+    case rustListAccounts = "ZRUST0058"
+    /// Error from rust layer when calling ZcashRustBackend.rustIsSeedRelevantToAnyDerivedAccount
+    case rustIsSeedRelevantToAnyDerivedAccount = "ZRUST0059"
     /// SQLite query failed when fetching all accounts from the database.
     case accountDAOGetAll = "ZADAO0001"
     /// Fetched accounts from SQLite but can't decode them.
diff --git a/Sources/ZcashLightClientKit/Error/ZcashErrorCodeDefinition.swift b/Sources/ZcashLightClientKit/Error/ZcashErrorCodeDefinition.swift
index de2c84b3..a5fde898 100644
--- a/Sources/ZcashLightClientKit/Error/ZcashErrorCodeDefinition.swift
+++ b/Sources/ZcashLightClientKit/Error/ZcashErrorCodeDefinition.swift
@@ -352,6 +352,14 @@ enum ZcashErrorDefinition {
     /// - `rustError` contains error generated by the rust layer.
     // sourcery: code="ZRUST0057"
     case rustProposeTransferFromURI(_ rustError: String)
+    /// Error from rust layer when calling ZcashRustBackend.
+    /// - `rustError` contains error generated by the rust layer.
+    // sourcery: code="ZRUST0058"
+    case rustListAccounts(_ rustError: String)
+    /// Error from rust layer when calling ZcashRustBackend.rustIsSeedRelevantToAnyDerivedAccount
+    /// - `rustError` contains error generated by the rust layer.
+    // sourcery: code="ZRUST0059"
+    case rustIsSeedRelevantToAnyDerivedAccount(_ rustError: String)
 
     // MARK: - Account DAO
 
diff --git a/Sources/ZcashLightClientKit/Initializer.swift b/Sources/ZcashLightClientKit/Initializer.swift
index db4e3c2a..d8af044b 100644
--- a/Sources/ZcashLightClientKit/Initializer.swift
+++ b/Sources/ZcashLightClientKit/Initializer.swift
@@ -120,7 +120,6 @@ public class Initializer {
     let saplingParamsSourceURL: SaplingParamsSourceURL
     var lightWalletService: LightWalletService
     let transactionRepository: TransactionRepository
-    let accountRepository: AccountRepository
     let storage: CompactBlockRepository
     var blockDownloaderService: BlockDownloaderService
     let network: ZcashNetwork
@@ -272,12 +271,6 @@ public class Initializer {
         self.alias = alias
         self.lightWalletService = container.resolve(LightWalletService.self)
         self.transactionRepository = container.resolve(TransactionRepository.self)
-        self.accountRepository = AccountRepositoryBuilder.build(
-            dataDbURL: urls.dataDbURL,
-            readOnly: true,
-            caching: true,
-            logger: container.resolve(Logger.self)
-        )
         self.storage = container.resolve(CompactBlockRepository.self)
         self.blockDownloaderService = container.resolve(BlockDownloaderService.self)
         self.network = network
@@ -419,7 +412,7 @@ public class Initializer {
         self.walletBirthday = checkpoint.height
 
         // If there are no accounts it must be created, the default amount of accounts is 1
-        if let seed, try accountRepository.getAll().isEmpty {
+        if let seed, try await rustBackend.listAccounts().isEmpty {
             var chainTip: UInt32?
             
             if walletMode == .restoreWallet {
diff --git a/Sources/ZcashLightClientKit/Model/WalletSummary.swift b/Sources/ZcashLightClientKit/Model/WalletSummary.swift
index 6f837cea..c0c7a9ed 100644
--- a/Sources/ZcashLightClientKit/Model/WalletSummary.swift
+++ b/Sources/ZcashLightClientKit/Model/WalletSummary.swift
@@ -21,9 +21,10 @@ public struct PoolBalance: Equatable {
 
 public struct AccountBalance: Equatable {
     public let saplingBalance: PoolBalance
+    public let orchardBalance: PoolBalance
     public let unshielded: Zatoshi
     
-    static let zero = AccountBalance(saplingBalance: .zero, unshielded: .zero)
+    static let zero = AccountBalance(saplingBalance: .zero, orchardBalance: .zero, unshielded: .zero)
 }
 
 struct ScanProgress: Equatable {
@@ -53,4 +54,5 @@ struct WalletSummary: Equatable {
     let fullyScannedHeight: BlockHeight
     let scanProgress: ScanProgress?
     let nextSaplingSubtreeIndex: UInt32
+    let nextOrchardSubtreeIndex: UInt32
 }
diff --git a/Sources/ZcashLightClientKit/Modules/Service/GRPC/LightWalletGRPCService.swift b/Sources/ZcashLightClientKit/Modules/Service/GRPC/LightWalletGRPCService.swift
index c430786e..02d2b534 100644
--- a/Sources/ZcashLightClientKit/Modules/Service/GRPC/LightWalletGRPCService.swift
+++ b/Sources/ZcashLightClientKit/Modules/Service/GRPC/LightWalletGRPCService.swift
@@ -223,14 +223,12 @@ extension LightWalletGRPCService: LightWalletService {
             do {
                 guard let reply = try await iterator.next() else { return nil }
                 return UTXO(
-                    id: nil,
                     address: reply.address,
                     prevoutTxId: reply.txid,
                     prevoutIndex: Int(reply.index),
                     script: reply.script,
                     valueZat: Int(reply.valueZat),
-                    height: Int(reply.height),
-                    spentInTx: nil
+                    height: Int(reply.height)
                 )
             } catch {
                 let serviceError = error.mapToServiceError()
@@ -278,6 +276,10 @@ extension LightWalletGRPCService: LightWalletService {
         }
     }
 
+    func getTreeState(_ id: BlockID) async throws -> TreeState {
+        try await compactTxStreamer.getTreeState(id)
+    }
+
     func closeConnection() {
         _ = channel.close()
     }
diff --git a/Sources/ZcashLightClientKit/Modules/Service/LightWalletService.swift b/Sources/ZcashLightClientKit/Modules/Service/LightWalletService.swift
index b6f3cf60..9680588f 100644
--- a/Sources/ZcashLightClientKit/Modules/Service/LightWalletService.swift
+++ b/Sources/ZcashLightClientKit/Modules/Service/LightWalletService.swift
@@ -196,4 +196,6 @@ protocol LightWalletService: AnyObject {
     /// - Parameters:
     ///   - request: Request to send to GetSubtreeRoots.
     func getSubtreeRoots(_ request: GetSubtreeRootsArg) -> AsyncThrowingStream<SubtreeRoot, Error>
+
+    func getTreeState(_ id: BlockID) async throws -> TreeState
 }
diff --git a/Sources/ZcashLightClientKit/Repository/UnspentTransactionOutputRepository.swift b/Sources/ZcashLightClientKit/Repository/UnspentTransactionOutputRepository.swift
deleted file mode 100644
index 348a69aa..00000000
--- a/Sources/ZcashLightClientKit/Repository/UnspentTransactionOutputRepository.swift
+++ /dev/null
@@ -1,15 +0,0 @@
-//
-//  UnspentTransactionOutputRepository.swift
-//  ZcashLightClientKit
-//
-//  Created by Francisco Gindre on 12/11/20.
-//
-
-import Foundation
-
-protocol UnspentTransactionOutputRepository {
-    func initialise() async throws
-    func getAll(address: String?) async throws -> [UnspentTransactionOutputEntity]
-    func store(utxos: [UnspentTransactionOutputEntity]) async throws
-    func clearAll(address: String?) async throws
-}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2430000.json b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2430000.json
new file mode 100644
index 00000000..3ef2f6ed
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2430000.json
@@ -0,0 +1,8 @@
+{
+  "network": "main",
+  "height": "2430000",
+  "hash": "0000000000125ca44e9fcf4cc3dcca62ea97fe57675de5f4eefff14019da9c59",
+  "time": 1710019165,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2432500.json b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2432500.json
new file mode 100644
index 00000000..fdf433e5
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2432500.json
@@ -0,0 +1,8 @@
+{
+  "network": "main",
+  "height": "2432500",
+  "hash": "00000000006bab4115f085ee76d0db4f993a10be75d234718b13fdff118f592d",
+  "time": 1710207121,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2435000.json b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2435000.json
new file mode 100644
index 00000000..e2d15ee1
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2435000.json
@@ -0,0 +1,8 @@
+{
+  "network": "main",
+  "height": "2435000",
+  "hash": "00000000009bd2c651d8ae1c17d68044331d1fc31706e319653a6987f7ebf6ec",
+  "time": 1710395535,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2437500.json b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2437500.json
new file mode 100644
index 00000000..e13879ae
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2437500.json
@@ -0,0 +1,8 @@
+{
+  "network": "main",
+  "height": "2437500",
+  "hash": "0000000001660722f6b67144e7f46c6839bcf186fd271e9d8a2c9ee52c507141",
+  "time": 1710584940,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2440000.json b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2440000.json
new file mode 100644
index 00000000..c058a89a
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2440000.json
@@ -0,0 +1,8 @@
+{
+  "network": "main",
+  "height": "2440000",
+  "hash": "00000000018aa1792888e7f52aaa4a491f9fbc8b2b3cbf2f7c61bce55925fe1a",
+  "time": 1710773380,
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+  "orchardTree": "0147a6f9d105380685acaf06121f4a4e73255cf306c7489f47e4637d4bce0e350201d6de40cf0031826655d3f106cd06b0ecf624d37040e38ec3c06fbd55547fda251f00012b8bc0c564cd98f599d12a041ef1d914cbe56d9d9208485d5ebe9ccb580bc60201072a949f5f31122af6b80e1e62396506d6a5cbabf08345481e221e55ad05f23b0000013a8bd26f29c49b7c8f0aa02ef6f95284b145e1b281eaf357e0042f83a0430624000163efdc4ca36aec225b76e1a60a69faf152d119f78afc277979696b91ab1ec62d012d2d92046864657193f8957b2a17382634c4197cd6de95d316e721260c99193300000001b317414af14283ac9ab63130ea6700eda06ec5f0702aa83a4b168a0e4eba773d01dc8f099e807208a39136acdae660ffd7fa2c9fca740c623f73c152cf2958563d0001d386508c9fabdc60836bfe3c7251fcbdd4617180a804d40fa29dc25fb9c0aa3401cf3bf92f69798e68555548afcce1648add1fb2548d64fa9a1ec22a3e26e7890101e637281deb58dff0c44ba13149b784a95da1b493005efd057e6f4ac20ef5d81d000001cc2dcaa338b312112db04b435a706d63244dd435238f0aa1e9e1598d35470810012dcc4273c8a0ed2337ecf7879380a07e7d427c7f9d82e538002bd1442978402c01daf63debf5b40df902dae98dadc029f281474d190cddecef1b10653248a234150001e2bca6a8d987d668defba89dc082196a922634ed88e065c669e526bb8815ee1b000000000000"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2442500.json b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2442500.json
new file mode 100644
index 00000000..1f24f7f5
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2442500.json
@@ -0,0 +1,8 @@
+{
+  "network": "main",
+  "height": "2442500",
+  "hash": "0000000000e01a9fdf001f3e7ce37f97297dfda65565cee2a5647e1dabf6e58d",
+  "time": 1710961233,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2445000.json b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2445000.json
new file mode 100644
index 00000000..55de725e
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2445000.json
@@ -0,0 +1,8 @@
+{
+  "network": "main",
+  "height": "2445000",
+  "hash": "000000000032ba3efc3e8c1c10a6dad5ddc4db01889b5cf8c3b83287c00bc2ae",
+  "time": 1711150054,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2447500.json b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2447500.json
new file mode 100644
index 00000000..36bdc8c9
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/mainnet/2447500.json
@@ -0,0 +1,8 @@
+{
+  "network": "main",
+  "height": "2447500",
+  "hash": "00000000012db8b5bdd6c44c6fbeeee7b24bbb7f14a214cbf678510a59cadf3f",
+  "time": 1711338099,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2750000.json b/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2750000.json
new file mode 100644
index 00000000..1791b006
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2750000.json
@@ -0,0 +1,8 @@
+{
+  "network": "test",
+  "height": "2750000",
+  "hash": "0032ee34dff008317a8b7078198e3e62a30d41b041bc821c07f2481d93fbcb59",
+  "time": 1710015877,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2760000.json b/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2760000.json
new file mode 100644
index 00000000..02b4797e
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2760000.json
@@ -0,0 +1,8 @@
+{
+  "network": "test",
+  "height": "2760000",
+  "hash": "001e7783656e6d9801bbd49483da9798b321626ebdf606993a5c68b40f2e636f",
+  "time": 1710643466,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2770000.json b/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2770000.json
new file mode 100644
index 00000000..6c00a30b
--- /dev/null
+++ b/Sources/ZcashLightClientKit/Resources/checkpoints/testnet/2770000.json
@@ -0,0 +1,8 @@
+{
+  "network": "test",
+  "height": "2770000",
+  "hash": "00065215d6079640ddf94ac7414130f35efabc9d24c9fa8feefa86030f5e5dcf",
+  "time": 1711329173,
+  "saplingTree": "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",
+  "orchardTree": "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"
+}
diff --git a/Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift b/Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift
index bb169dfd..5eb048ef 100644
--- a/Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift
+++ b/Sources/ZcashLightClientKit/Rust/ZcashRustBackend.swift
@@ -49,6 +49,31 @@ actor ZcashRustBackend: ZcashRustBackendWelding {
         }
     }
 
+    func listAccounts() async throws -> [Int32] {
+        globalDBLock.lock()
+        let accountsPtr = zcashlc_list_accounts(
+            dbData.0,
+            dbData.1,
+            networkType.networkId
+        )
+        globalDBLock.unlock()
+
+        guard let accountsPtr else {
+            throw ZcashError.rustListAccounts(lastErrorMessage(fallback: "`listAccounts` failed with unknown error"))
+        }
+
+        defer { zcashlc_free_accounts(accountsPtr) }
+
+        var accounts: [Int32] = []
+
+        for i in (0 ..< Int(accountsPtr.pointee.len)) {
+            let account = accountsPtr.pointee.ptr.advanced(by: i).pointee
+            accounts.append(Int32(account.account_index))
+        }
+
+        return accounts
+    }
+
     func createAccount(seed: [UInt8], treeState: TreeState, recoverUntil: UInt32?) async throws -> UnifiedSpendingKey {
         var rUntil: Int64 = -1
         
@@ -80,6 +105,26 @@ actor ZcashRustBackend: ZcashRustBackendWelding {
         return ffiBinaryKeyPtr.pointee.unsafeToUnifiedSpendingKey(network: networkType)
     }
 
+    func isSeedRelevantToAnyDerivedAccount(seed: [UInt8]) async throws -> Bool {
+        globalDBLock.lock()
+        let result = zcashlc_is_seed_relevant_to_any_derived_account(
+            dbData.0,
+            dbData.1,
+            seed,
+            UInt(seed.count),
+            networkType.networkId
+        )
+        globalDBLock.unlock()
+
+        // -1 is the error sentinel.
+        guard result >= 0 else {
+            throw ZcashError.rustIsSeedRelevantToAnyDerivedAccount(lastErrorMessage(fallback: "`isSeedRelevantToAnyDerivedAccount` failed with unknown error"))
+        }
+
+        // 0 is false, 1 is true.
+        return result != 0
+    }
+
     func proposeTransfer(
         account: Int32,
         to address: String,
@@ -298,6 +343,8 @@ actor ZcashRustBackend: ZcashRustBackendWelding {
             return DbInitResult.success
         case 1:
             return DbInitResult.seedRequired
+        case 2:
+            return DbInitResult.seedNotRelevant
         default:
             throw ZcashError.rustInitDataDb(lastErrorMessage(fallback: "`initDataDb` failed with unknown error"))
         }
@@ -589,7 +636,8 @@ actor ZcashRustBackend: ZcashRustBackendWelding {
             chainTipHeight: BlockHeight(summaryPtr.pointee.chain_tip_height),
             fullyScannedHeight: BlockHeight(summaryPtr.pointee.fully_scanned_height),
             scanProgress: summaryPtr.pointee.scan_progress?.pointee.toScanProgress(),
-            nextSaplingSubtreeIndex: UInt32(summaryPtr.pointee.next_sapling_subtree_index)
+            nextSaplingSubtreeIndex: UInt32(summaryPtr.pointee.next_sapling_subtree_index),
+            nextOrchardSubtreeIndex: UInt32(summaryPtr.pointee.next_orchard_subtree_index)
         )
     }
 
@@ -623,9 +671,20 @@ actor ZcashRustBackend: ZcashRustBackendWelding {
         return scanRanges
     }
 
-    func scanBlocks(fromHeight: Int32, limit: UInt32 = 0) async throws -> ScanSummary {
+    func scanBlocks(fromHeight: Int32, fromState: TreeState, limit: UInt32 = 0) async throws -> ScanSummary {
+        let fromStateBytes = try fromState.serializedData(partial: false).bytes
+
         globalDBLock.lock()
-        let summaryPtr = zcashlc_scan_blocks(fsBlockDbRoot.0, fsBlockDbRoot.1, dbData.0, dbData.1, fromHeight, limit, networkType.networkId)
+        let summaryPtr = zcashlc_scan_blocks(
+            fsBlockDbRoot.0,
+            fsBlockDbRoot.1,
+            dbData.0,
+            dbData.1,
+            fromHeight,
+            fromStateBytes,
+            UInt(fromStateBytes.count),
+            limit,
+            networkType.networkId)
         globalDBLock.unlock()
 
         guard let summaryPtr else {
@@ -841,6 +900,7 @@ extension FfiAccountBalance {
     func toAccountBalance() -> AccountBalance {
         .init(
             saplingBalance: self.sapling_balance.toPoolBalance(),
+            orchardBalance: self.orchard_balance.toPoolBalance(),
             unshielded: Zatoshi(self.unshielded)
         )
     }
@@ -856,6 +916,7 @@ extension FfiScanProgress {
     }
 }
 
+// swiftlint:disable large_tuple line_length
 struct FfiTxId {
     var tuple: (UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8, UInt8)
     var array: [UInt8] {
diff --git a/Sources/ZcashLightClientKit/Rust/ZcashRustBackendWelding.swift b/Sources/ZcashLightClientKit/Rust/ZcashRustBackendWelding.swift
index 64e9793b..5f0fb115 100644
--- a/Sources/ZcashLightClientKit/Rust/ZcashRustBackendWelding.swift
+++ b/Sources/ZcashLightClientKit/Rust/ZcashRustBackendWelding.swift
@@ -11,15 +11,21 @@ import Foundation
 enum ZcashRustBackendWeldingConstants {
     static let validChain: Int32 = -1
 }
-/// Enumeration of potential return states for database initialization. If `seedRequired`
-/// is returned, the caller must re-attempt initialization providing the seed
+
+/// Enumeration of potential return states for database initialization.
+///
+/// If `seedRequired` is returned, the caller must re-attempt initialization providing the seed.
 public enum DbInitResult {
     case success
     case seedRequired
+    case seedNotRelevant
 }
 
 // sourcery: mockActor
 protocol ZcashRustBackendWelding {
+    /// Returns a list of the accounts in the wallet.
+    func listAccounts() async throws -> [Int32]
+
     /// Adds the next available account-level spend authority, given the current set of [ZIP 316]
     /// account identifiers known, to the wallet database.
     ///
@@ -41,6 +47,11 @@ protocol ZcashRustBackendWelding {
     /// - Throws: `rustCreateAccount`.
     func createAccount(seed: [UInt8], treeState: TreeState, recoverUntil: UInt32?) async throws -> UnifiedSpendingKey
 
+    /// Checks whether the given seed is relevant to any of the derived accounts in the wallet.
+    ///
+    /// - parameter seed: byte array of the seed
+    func isSeedRelevantToAnyDerivedAccount(seed: [UInt8]) async throws -> Bool
+
     /// Scans a transaction for any information that can be decrypted by the accounts in the wallet, and saves it to the wallet.
     /// - parameter tx:     the transaction to decrypt
     /// - parameter minedHeight: height on which this transaction was mined. this is used to fetch the consensus branch ID.
@@ -173,9 +184,10 @@ protocol ZcashRustBackendWelding {
     /// cache, an error will be signalled.
     ///
     /// - parameter fromHeight: scan starting from the given height.
+    /// - parameter fromState: The TreeState Protobuf object for the height prior to `fromHeight`
     /// - parameter limit: scan up to limit blocks.
     /// - Throws: `rustScanBlocks` if rust layer returns error.
-    func scanBlocks(fromHeight: Int32, limit: UInt32) async throws -> ScanSummary
+    func scanBlocks(fromHeight: Int32, fromState: TreeState, limit: UInt32) async throws -> ScanSummary
 
     /// Upserts a UTXO into the data db database
     /// - parameter txid: the txid bytes for the UTXO
diff --git a/Sources/ZcashLightClientKit/Synchronizer.swift b/Sources/ZcashLightClientKit/Synchronizer.swift
index 2e1788c6..0fae1a29 100644
--- a/Sources/ZcashLightClientKit/Synchronizer.swift
+++ b/Sources/ZcashLightClientKit/Synchronizer.swift
@@ -351,6 +351,11 @@ public protocol Synchronizer: AnyObject {
     /// - Throws: ZcashError when failures occur and related to `synchronizer.start(retry: Bool)`, it's the only throwing operation
     /// during the whole endpoint change.
     func switchTo(endpoint: LightWalletEndpoint) async throws
+
+    /// Checks whether the given seed is relevant to any of the derived accounts in the wallet.
+    ///
+    /// - parameter seed: byte array of the seed
+    func isSeedRelevantToAnyDerivedAccount(seed: [UInt8]) async throws -> Bool
 }
 
 public enum SyncStatus: Equatable {
diff --git a/Sources/ZcashLightClientKit/Synchronizer/Dependencies.swift b/Sources/ZcashLightClientKit/Synchronizer/Dependencies.swift
index 05c48053..dd32a14f 100644
--- a/Sources/ZcashLightClientKit/Synchronizer/Dependencies.swift
+++ b/Sources/ZcashLightClientKit/Synchronizer/Dependencies.swift
@@ -100,8 +100,7 @@ enum Dependencies {
     
     static func setupCompactBlockProcessor(
         in container: DIContainer,
-        config: CompactBlockProcessor.Configuration,
-        accountRepository: AccountRepository
+        config: CompactBlockProcessor.Configuration
     ) {
         container.register(type: BlockDownloader.self, isSingleton: true) { di in
             let service = di.resolve(LightWalletService.self)
@@ -120,6 +119,7 @@ enum Dependencies {
         }
 
         container.register(type: BlockScanner.self, isSingleton: true) { di in
+            let service = di.resolve(LightWalletService.self)
             let rustBackend = di.resolve(ZcashRustBackendWelding.self)
             let transactionRepository = di.resolve(TransactionRepository.self)
             let metrics = di.resolve(SDKMetrics.self)
@@ -133,6 +133,7 @@ enum Dependencies {
             return BlockScannerImpl(
                 config: blockScannerConfig,
                 rustBackend: rustBackend,
+                service: service,
                 transactionRepository: transactionRepository,
                 metrics: metrics,
                 logger: logger
@@ -163,7 +164,6 @@ enum Dependencies {
             let logger = di.resolve(Logger.self)
             
             return UTXOFetcherImpl(
-                accountRepository: accountRepository,
                 blockDownloaderService: blockDownloaderService,
                 config: utxoFetcherConfig,
                 rustBackend: rustBackend,
diff --git a/Sources/ZcashLightClientKit/Synchronizer/SDKSynchronizer.swift b/Sources/ZcashLightClientKit/Synchronizer/SDKSynchronizer.swift
index 8025d9e0..ea80173e 100644
--- a/Sources/ZcashLightClientKit/Synchronizer/SDKSynchronizer.swift
+++ b/Sources/ZcashLightClientKit/Synchronizer/SDKSynchronizer.swift
@@ -40,7 +40,6 @@ public class SDKSynchronizer: Synchronizer {
     public let network: ZcashNetwork
     private let transactionEncoder: TransactionEncoder
     private let transactionRepository: TransactionRepository
-    private let utxoRepository: UnspentTransactionOutputRepository
 
     private let syncSessionIDGenerator: SyncSessionIDGenerator
     private let syncSession: SyncSession
@@ -55,7 +54,6 @@ public class SDKSynchronizer: Synchronizer {
             initializer: initializer,
             transactionEncoder: WalletTransactionEncoder(initializer: initializer),
             transactionRepository: initializer.transactionRepository,
-            utxoRepository: UTXORepositoryBuilder.build(initializer: initializer),
             blockProcessor: CompactBlockProcessor(
                 initializer: initializer,
                 walletBirthdayProvider: { initializer.walletBirthday }
@@ -69,7 +67,6 @@ public class SDKSynchronizer: Synchronizer {
         initializer: Initializer,
         transactionEncoder: TransactionEncoder,
         transactionRepository: TransactionRepository,
-        utxoRepository: UnspentTransactionOutputRepository,
         blockProcessor: CompactBlockProcessor,
         syncSessionTicker: SessionTicker
     ) {
@@ -78,7 +75,6 @@ public class SDKSynchronizer: Synchronizer {
         self.initializer = initializer
         self.transactionEncoder = transactionEncoder
         self.transactionRepository = transactionRepository
-        self.utxoRepository = utxoRepository
         self.blockProcessor = blockProcessor
         self.network = initializer.network
         self.metrics = initializer.container.resolve(SDKMetrics.self)
@@ -137,8 +133,6 @@ public class SDKSynchronizer: Synchronizer {
             throw error
         }
 
-        try await utxoRepository.initialise()
-
         if case .seedRequired = try await self.initializer.initialize(with: seed, walletBirthday: walletBirthday, for: walletMode) {
             return .seedRequired
         }
@@ -309,8 +303,8 @@ public class SDKSynchronizer: Synchronizer {
                uri,
                accountIndex: accountIndex
            )
-        } catch ZcashError.rustCreateToAddress(let e) {
-            throw ZcashError.rustProposeTransferFromURI(e)
+        } catch ZcashError.rustCreateToAddress(let error) {
+            throw ZcashError.rustProposeTransferFromURI(error)
         } catch {
             throw error
         }
@@ -502,25 +496,6 @@ public class SDKSynchronizer: Synchronizer {
         try await blockProcessor.latestHeight()
     }
 
-    public func latestUTXOs(address: String) async throws -> [UnspentTransactionOutputEntity] {
-        try throwIfUnprepared()
-
-        guard initializer.isValidTransparentAddress(address) else {
-            throw ZcashError.synchronizerLatestUTXOsInvalidTAddress
-        }
-        
-        let stream = initializer.lightWalletService.fetchUTXOs(for: address, height: network.constants.saplingActivationHeight)
-        
-        // swiftlint:disable:next array_constructor
-        var utxos: [UnspentTransactionOutputEntity] = []
-        for try await transactionEntity in stream {
-            utxos.append(transactionEntity)
-        }
-        try await self.utxoRepository.clearAll(address: address)
-        try await self.utxoRepository.store(utxos: utxos)
-        return utxos
-    }
-
     public func refreshUTXOs(address: TransparentAddress, from height: BlockHeight) async throws -> RefreshedUTXOs {
         try throwIfUnprepared()
         return try await blockProcessor.refreshUTXOs(tAddress: address, startHeight: height)
@@ -628,7 +603,11 @@ public class SDKSynchronizer: Synchronizer {
 
         return subject.eraseToAnyPublisher()
     }
-    
+
+    public func isSeedRelevantToAnyDerivedAccount(seed: [UInt8]) async throws -> Bool {
+        try await initializer.rustBackend.isSeedRelevantToAnyDerivedAccount(seed: seed)
+    }
+
     // MARK: Server switch
 
     public func switchTo(endpoint: LightWalletEndpoint) async throws {
@@ -692,8 +671,7 @@ public class SDKSynchronizer: Synchronizer {
         // CompactBlockProcessor dependency update
         Dependencies.setupCompactBlockProcessor(
             in: initializer.container,
-            config: await blockProcessor.config,
-            accountRepository: initializer.accountRepository
+            config: await blockProcessor.config
         )
         
         // INITIALIZER
diff --git a/Tests/DarksideTests/PaymentURIFulfillmentTests.swift b/Tests/DarksideTests/PaymentURIFulfillmentTests.swift
index 22f54394..3da93841 100644
--- a/Tests/DarksideTests/PaymentURIFulfillmentTests.swift
+++ b/Tests/DarksideTests/PaymentURIFulfillmentTests.swift
@@ -315,6 +315,7 @@ class PaymentURIFulfillmentTests: ZcashTestCase {
          */
 
         let memo = "VGhpcyBpcyBhIHNpbXBsZSBtZW1vLg" // "This is a simple memo."
+        // swiftlint:disable:next line_length
         let paymentURI = "zcash:zecIsGreat17mg40levjezevuhdp5pqrd52zere7r7vrjgdwn5sj4xsqtm20euwahv9anxmwr3y3kmwuz8k55a?amount=0.0002&memo=\(memo)&message=Thank%20you%20for%20your%20purchase&label=Your%20Purchase"
 
         do {
diff --git a/Tests/OfflineTests/ClosureSynchronizerOfflineTests.swift b/Tests/OfflineTests/ClosureSynchronizerOfflineTests.swift
index c54e631b..9be8c336 100644
--- a/Tests/OfflineTests/ClosureSynchronizerOfflineTests.swift
+++ b/Tests/OfflineTests/ClosureSynchronizerOfflineTests.swift
@@ -638,7 +638,7 @@ class ClosureSynchronizerOfflineTests: XCTestCase {
     }
 
     func testGetTransparentBalanceSucceed() {
-        let expectedBalance = AccountBalance(saplingBalance: .zero, unshielded: Zatoshi(200))
+        let expectedBalance = AccountBalance(saplingBalance: .zero, orchardBalance: .zero, unshielded: Zatoshi(200))
 
         synchronizerMock.getAccountBalanceAccountIndexClosure = { receivedAccountIndex in
             XCTAssertEqual(receivedAccountIndex, 3)
@@ -685,7 +685,13 @@ class ClosureSynchronizerOfflineTests: XCTestCase {
                 PoolBalance(
                     spendableValue: Zatoshi(333),
                     changePendingConfirmation: .zero,
-                    valuePendingSpendability: .zero), unshielded: .zero
+                    valuePendingSpendability: .zero),
+            orchardBalance:
+                PoolBalance(
+                    spendableValue: Zatoshi(333),
+                    changePendingConfirmation: .zero,
+                    valuePendingSpendability: .zero),
+            unshielded: .zero
         )
         
         synchronizerMock.getAccountBalanceAccountIndexClosure = { receivedAccountIndex in
@@ -733,7 +739,13 @@ class ClosureSynchronizerOfflineTests: XCTestCase {
                 PoolBalance(
                     spendableValue: .zero,
                     changePendingConfirmation: Zatoshi(333),
-                    valuePendingSpendability: .zero), unshielded: .zero
+                    valuePendingSpendability: .zero),
+            orchardBalance:
+                PoolBalance(
+                    spendableValue: .zero,
+                    changePendingConfirmation: Zatoshi(333),
+                    valuePendingSpendability: .zero),
+            unshielded: .zero
         )
         
         synchronizerMock.getAccountBalanceAccountIndexClosure = { receivedAccountIndex in
diff --git a/Tests/OfflineTests/CombineSynchronizerOfflineTests.swift b/Tests/OfflineTests/CombineSynchronizerOfflineTests.swift
index 07cec75a..b12a4e7f 100644
--- a/Tests/OfflineTests/CombineSynchronizerOfflineTests.swift
+++ b/Tests/OfflineTests/CombineSynchronizerOfflineTests.swift
@@ -748,7 +748,7 @@ class CombineSynchronizerOfflineTests: XCTestCase {
     }
 
     func testGetTransparentBalanceSucceed() {
-        let expectedBalance = AccountBalance(saplingBalance: .zero, unshielded: Zatoshi(100))
+        let expectedBalance = AccountBalance(saplingBalance: .zero, orchardBalance: .zero, unshielded: Zatoshi(100))
 
         synchronizerMock.getAccountBalanceAccountIndexClosure = { receivedAccountIndex in
             XCTAssertEqual(receivedAccountIndex, 3)
@@ -809,6 +809,11 @@ class CombineSynchronizerOfflineTests: XCTestCase {
                     spendableValue: .zero,
                     changePendingConfirmation: Zatoshi(333),
                     valuePendingSpendability: .zero),
+            orchardBalance:
+                PoolBalance(
+                    spendableValue: .zero,
+                    changePendingConfirmation: Zatoshi(333),
+                    valuePendingSpendability: .zero),
             unshielded: .zero
         )
         
@@ -871,6 +876,11 @@ class CombineSynchronizerOfflineTests: XCTestCase {
                     spendableValue: Zatoshi(333),
                     changePendingConfirmation: .zero,
                     valuePendingSpendability: .zero),
+            orchardBalance:
+                PoolBalance(
+                    spendableValue: Zatoshi(333),
+                    changePendingConfirmation: .zero,
+                    valuePendingSpendability: .zero),
             unshielded: .zero
         )
         
diff --git a/Tests/OfflineTests/SynchronizerOfflineTests.swift b/Tests/OfflineTests/SynchronizerOfflineTests.swift
index 826e98ae..3d701a14 100644
--- a/Tests/OfflineTests/SynchronizerOfflineTests.swift
+++ b/Tests/OfflineTests/SynchronizerOfflineTests.swift
@@ -29,10 +29,13 @@ class SynchronizerOfflineTests: ZcashTestCase {
     }
 
     func testCallPrepareWithAlreadyUsedAliasThrowsError() async throws {
+        // Pick a testnet height for which both Sapling and Orchard are active.
+        let walletBirthday = 1900000
+
         let firstTestCoordinator = try await TestCoordinator(
             alias: .custom("alias"),
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -40,7 +43,7 @@ class SynchronizerOfflineTests: ZcashTestCase {
         let secondTestCoordinator = try await TestCoordinator(
             alias: .custom("alias"),
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -58,10 +61,13 @@ class SynchronizerOfflineTests: ZcashTestCase {
     }
 
     func testWhenSynchronizerIsDeallocatedAliasIsntUsedAnymore() async throws {
+        // Pick a testnet height for which both Sapling and Orchard are active.
+        let walletBirthday = 1900000
+
         var testCoordinator: TestCoordinator! = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -75,7 +81,7 @@ class SynchronizerOfflineTests: ZcashTestCase {
         testCoordinator = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -88,10 +94,13 @@ class SynchronizerOfflineTests: ZcashTestCase {
     }
 
     func testCallWipeWithAlreadyUsedAliasThrowsError() async throws {
+        // Pick a testnet height for which both Sapling and Orchard are active.
+        let walletBirthday = 1900000
+
         let firstTestCoordinator = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -99,7 +108,7 @@ class SynchronizerOfflineTests: ZcashTestCase {
         let secondTestCoordinator = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -146,10 +155,13 @@ class SynchronizerOfflineTests: ZcashTestCase {
     }
 
     func testPrepareCanBeCalledAfterWipeWithSameInstanceOfSDKSynchronizer() async throws {
+        // Pick a testnet height for which both Sapling and Orchard are active.
+        let walletBirthday = 1900000
+
         let testCoordinator = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -180,10 +192,13 @@ class SynchronizerOfflineTests: ZcashTestCase {
     }
 
     func testSendToAddressCalledWithoutPrepareThrowsError() async throws {
+        // Pick a testnet height for which both Sapling and Orchard are active.
+        let walletBirthday = 1900000
+
         let testCoordinator = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -205,10 +220,13 @@ class SynchronizerOfflineTests: ZcashTestCase {
     }
 
     func testShieldFundsCalledWithoutPrepareThrowsError() async throws {
+        // Pick a testnet height for which both Sapling and Orchard are active.
+        let walletBirthday = 1900000
+
         let testCoordinator = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -229,10 +247,13 @@ class SynchronizerOfflineTests: ZcashTestCase {
     }
 
     func testRefreshUTXOCalledWithoutPrepareThrowsError() async throws {
+        // Pick a testnet height for which both Sapling and Orchard are active.
+        let walletBirthday = 1900000
+
         let testCoordinator = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
@@ -249,10 +270,13 @@ class SynchronizerOfflineTests: ZcashTestCase {
     }
 
     func testRewindCalledWithoutPrepareThrowsError() async throws {
+        // Pick a testnet height for which both Sapling and Orchard are active.
+        let walletBirthday = 1900000
+
         let testCoordinator = try await TestCoordinator(
             alias: .default,
             container: mockContainer,
-            walletBirthday: 10,
+            walletBirthday: walletBirthday,
             network: network,
             callPrepareInConstructor: false
         )
diff --git a/Tests/OfflineTests/UnifiedTypecodesTests.swift b/Tests/OfflineTests/UnifiedTypecodesTests.swift
index d93345a2..7ff58307 100644
--- a/Tests/OfflineTests/UnifiedTypecodesTests.swift
+++ b/Tests/OfflineTests/UnifiedTypecodesTests.swift
@@ -32,7 +32,7 @@ final class UnifiedTypecodesTests: XCTestCase {
 
         let typecodes = try DerivationTool(networkType: .testnet).receiverTypecodesFromUnifiedAddress(address)
 
-        XCTAssertEqual(typecodes, [.sapling, .p2pkh])
+        XCTAssertEqual(typecodes, [.orchard, .sapling, .p2pkh])
     }
 
     func testUnifiedAddressHasTransparentSaplingReceivers() throws {
@@ -51,6 +51,7 @@ final class UnifiedTypecodesTests: XCTestCase {
         XCTAssertEqual(
             Set<UnifiedAddress.ReceiverTypecodes>(typecodes),
             Set([
+                .orchard,
                 .sapling,
                 .p2pkh
             ])
diff --git a/Tests/OfflineTests/ZcashRustBackendTests.swift b/Tests/OfflineTests/ZcashRustBackendTests.swift
index 4b77e426..8293facb 100644
--- a/Tests/OfflineTests/ZcashRustBackendTests.swift
+++ b/Tests/OfflineTests/ZcashRustBackendTests.swift
@@ -126,6 +126,11 @@ class ZcashRustBackendTests: XCTestCase {
             XCTFail("not enough transparent receivers")
             return
         }
+
+        // The first address in the wallet is created when the account is created, using
+        // the default receivers specified inside `zcash_client_sqlite`. The remaining
+        // addresses are generated here, using the receivers specified in the Swift SDK's
+        // FFI backend.
         var uAddresses: [UnifiedAddress] = []
         for i in 0...2 {
             uAddresses.append(
diff --git a/Tests/TestUtils/DarkSideWalletService.swift b/Tests/TestUtils/DarkSideWalletService.swift
index 60e3f90e..2b1fbb56 100644
--- a/Tests/TestUtils/DarkSideWalletService.swift
+++ b/Tests/TestUtils/DarkSideWalletService.swift
@@ -190,6 +190,10 @@ class DarksideWalletService: LightWalletService {
     func getSubtreeRoots(_ request: ZcashLightClientKit.GetSubtreeRootsArg) -> AsyncThrowingStream<ZcashLightClientKit.SubtreeRoot, Error> {
         service.getSubtreeRoots(request)
     }
+
+    func getTreeState(_ id: BlockID) async throws -> TreeState {
+        try await service.getTreeState(id)
+    }
 }
 
 enum DarksideWalletDConstants: NetworkConstants {
diff --git a/Tests/TestUtils/FakeService.swift b/Tests/TestUtils/FakeService.swift
index 07e2d74b..3358f519 100644
--- a/Tests/TestUtils/FakeService.swift
+++ b/Tests/TestUtils/FakeService.swift
@@ -82,4 +82,8 @@ class MockLightWalletService: LightWalletService {
     func getSubtreeRoots(_ request: ZcashLightClientKit.GetSubtreeRootsArg) -> AsyncThrowingStream<ZcashLightClientKit.SubtreeRoot, Error> {
         service.getSubtreeRoots(request)
     }
+    
+    func getTreeState(_ id: BlockID) async throws -> TreeState {
+        try await service.getTreeState(id)
+    }
 }
diff --git a/Tests/TestUtils/Sourcery/GeneratedMocks/AutoMockable.generated.swift b/Tests/TestUtils/Sourcery/GeneratedMocks/AutoMockable.generated.swift
index 51612a02..f99690a5 100644
--- a/Tests/TestUtils/Sourcery/GeneratedMocks/AutoMockable.generated.swift
+++ b/Tests/TestUtils/Sourcery/GeneratedMocks/AutoMockable.generated.swift
@@ -963,6 +963,30 @@ class LightWalletServiceMock: LightWalletService {
         }
     }
 
+    // MARK: - getTreeState
+
+    var getTreeStateThrowableError: Error?
+    var getTreeStateCallsCount = 0
+    var getTreeStateCalled: Bool {
+        return getTreeStateCallsCount > 0
+    }
+    var getTreeStateReceivedId: BlockID?
+    var getTreeStateReturnValue: TreeState!
+    var getTreeStateClosure: ((BlockID) async throws -> TreeState)?
+
+    func getTreeState(_ id: BlockID) async throws -> TreeState {
+        if let error = getTreeStateThrowableError {
+            throw error
+        }
+        getTreeStateCallsCount += 1
+        getTreeStateReceivedId = id
+        if let closure = getTreeStateClosure {
+            return try await closure(id)
+        } else {
+            return getTreeStateReturnValue
+        }
+    }
+
 }
 class LightWalletdInfoMock: LightWalletdInfo {
 
@@ -1776,6 +1800,30 @@ class SynchronizerMock: Synchronizer {
         try await switchToEndpointClosure!(endpoint)
     }
 
+    // MARK: - isSeedRelevantToAnyDerivedAccount
+
+    var isSeedRelevantToAnyDerivedAccountSeedThrowableError: Error?
+    var isSeedRelevantToAnyDerivedAccountSeedCallsCount = 0
+    var isSeedRelevantToAnyDerivedAccountSeedCalled: Bool {
+        return isSeedRelevantToAnyDerivedAccountSeedCallsCount > 0
+    }
+    var isSeedRelevantToAnyDerivedAccountSeedReceivedSeed: [UInt8]?
+    var isSeedRelevantToAnyDerivedAccountSeedReturnValue: Bool!
+    var isSeedRelevantToAnyDerivedAccountSeedClosure: (([UInt8]) async throws -> Bool)?
+
+    func isSeedRelevantToAnyDerivedAccount(seed: [UInt8]) async throws -> Bool {
+        if let error = isSeedRelevantToAnyDerivedAccountSeedThrowableError {
+            throw error
+        }
+        isSeedRelevantToAnyDerivedAccountSeedCallsCount += 1
+        isSeedRelevantToAnyDerivedAccountSeedReceivedSeed = seed
+        if let closure = isSeedRelevantToAnyDerivedAccountSeedClosure {
+            return try await closure(seed)
+        } else {
+            return isSeedRelevantToAnyDerivedAccountSeedReturnValue
+        }
+    }
+
 }
 class TransactionRepositoryMock: TransactionRepository {
 
@@ -2213,6 +2261,37 @@ actor ZcashRustBackendWeldingMock: ZcashRustBackendWelding {
         self.consensusBranchIdForHeightClosure = consensusBranchIdForHeightClosure
     }
 
+    // MARK: - listAccounts
+
+    var listAccountsThrowableError: Error?
+    func setListAccountsThrowableError(_ param: Error?) async {
+        listAccountsThrowableError = param
+    }
+    var listAccountsCallsCount = 0
+    var listAccountsCalled: Bool {
+        return listAccountsCallsCount > 0
+    }
+    var listAccountsReturnValue: [Int32]!
+    func setListAccountsReturnValue(_ param: [Int32]) async {
+        listAccountsReturnValue = param
+    }
+    var listAccountsClosure: (() async throws -> [Int32])?
+    func setListAccountsClosure(_ param: (() async throws -> [Int32])?) async {
+        listAccountsClosure = param
+    }
+
+    func listAccounts() async throws -> [Int32] {
+        if let error = listAccountsThrowableError {
+            throw error
+        }
+        listAccountsCallsCount += 1
+        if let closure = listAccountsClosure {
+            return try await closure()
+        } else {
+            return listAccountsReturnValue
+        }
+    }
+
     // MARK: - createAccount
 
     var createAccountSeedTreeStateRecoverUntilThrowableError: Error?
@@ -2246,6 +2325,39 @@ actor ZcashRustBackendWeldingMock: ZcashRustBackendWelding {
         }
     }
 
+    // MARK: - isSeedRelevantToAnyDerivedAccount
+
+    var isSeedRelevantToAnyDerivedAccountSeedThrowableError: Error?
+    func setIsSeedRelevantToAnyDerivedAccountSeedThrowableError(_ param: Error?) async {
+        isSeedRelevantToAnyDerivedAccountSeedThrowableError = param
+    }
+    var isSeedRelevantToAnyDerivedAccountSeedCallsCount = 0
+    var isSeedRelevantToAnyDerivedAccountSeedCalled: Bool {
+        return isSeedRelevantToAnyDerivedAccountSeedCallsCount > 0
+    }
+    var isSeedRelevantToAnyDerivedAccountSeedReceivedSeed: [UInt8]?
+    var isSeedRelevantToAnyDerivedAccountSeedReturnValue: Bool!
+    func setIsSeedRelevantToAnyDerivedAccountSeedReturnValue(_ param: Bool) async {
+        isSeedRelevantToAnyDerivedAccountSeedReturnValue = param
+    }
+    var isSeedRelevantToAnyDerivedAccountSeedClosure: (([UInt8]) async throws -> Bool)?
+    func setIsSeedRelevantToAnyDerivedAccountSeedClosure(_ param: (([UInt8]) async throws -> Bool)?) async {
+        isSeedRelevantToAnyDerivedAccountSeedClosure = param
+    }
+
+    func isSeedRelevantToAnyDerivedAccount(seed: [UInt8]) async throws -> Bool {
+        if let error = isSeedRelevantToAnyDerivedAccountSeedThrowableError {
+            throw error
+        }
+        isSeedRelevantToAnyDerivedAccountSeedCallsCount += 1
+        isSeedRelevantToAnyDerivedAccountSeedReceivedSeed = seed
+        if let closure = isSeedRelevantToAnyDerivedAccountSeedClosure {
+            return try await closure(seed)
+        } else {
+            return isSeedRelevantToAnyDerivedAccountSeedReturnValue
+        }
+    }
+
     // MARK: - decryptAndStoreTransaction
 
     var decryptAndStoreTransactionTxBytesMinedHeightThrowableError: Error?
@@ -2761,34 +2873,34 @@ actor ZcashRustBackendWeldingMock: ZcashRustBackendWelding {
 
     // MARK: - scanBlocks
 
-    var scanBlocksFromHeightLimitThrowableError: Error?
-    func setScanBlocksFromHeightLimitThrowableError(_ param: Error?) async {
-        scanBlocksFromHeightLimitThrowableError = param
+    var scanBlocksFromHeightFromStateLimitThrowableError: Error?
+    func setScanBlocksFromHeightFromStateLimitThrowableError(_ param: Error?) async {
+        scanBlocksFromHeightFromStateLimitThrowableError = param
     }
-    var scanBlocksFromHeightLimitCallsCount = 0
-    var scanBlocksFromHeightLimitCalled: Bool {
-        return scanBlocksFromHeightLimitCallsCount > 0
+    var scanBlocksFromHeightFromStateLimitCallsCount = 0
+    var scanBlocksFromHeightFromStateLimitCalled: Bool {
+        return scanBlocksFromHeightFromStateLimitCallsCount > 0
     }
-    var scanBlocksFromHeightLimitReceivedArguments: (fromHeight: Int32, limit: UInt32)?
-    var scanBlocksFromHeightLimitReturnValue: ScanSummary!
-    func setScanBlocksFromHeightLimitReturnValue(_ param: ScanSummary) async {
-        scanBlocksFromHeightLimitReturnValue = param
+    var scanBlocksFromHeightFromStateLimitReceivedArguments: (fromHeight: Int32, fromState: TreeState, limit: UInt32)?
+    var scanBlocksFromHeightFromStateLimitReturnValue: ScanSummary!
+    func setScanBlocksFromHeightFromStateLimitReturnValue(_ param: ScanSummary) async {
+        scanBlocksFromHeightFromStateLimitReturnValue = param
     }
-    var scanBlocksFromHeightLimitClosure: ((Int32, UInt32) async throws -> ScanSummary)?
-    func setScanBlocksFromHeightLimitClosure(_ param: ((Int32, UInt32) async throws -> ScanSummary)?) async {
-        scanBlocksFromHeightLimitClosure = param
+    var scanBlocksFromHeightFromStateLimitClosure: ((Int32, TreeState, UInt32) async throws -> ScanSummary)?
+    func setScanBlocksFromHeightFromStateLimitClosure(_ param: ((Int32, TreeState, UInt32) async throws -> ScanSummary)?) async {
+        scanBlocksFromHeightFromStateLimitClosure = param
     }
 
-    func scanBlocks(fromHeight: Int32, limit: UInt32) async throws -> ScanSummary {
-        if let error = scanBlocksFromHeightLimitThrowableError {
+    func scanBlocks(fromHeight: Int32, fromState: TreeState, limit: UInt32) async throws -> ScanSummary {
+        if let error = scanBlocksFromHeightFromStateLimitThrowableError {
             throw error
         }
-        scanBlocksFromHeightLimitCallsCount += 1
-        scanBlocksFromHeightLimitReceivedArguments = (fromHeight: fromHeight, limit: limit)
-        if let closure = scanBlocksFromHeightLimitClosure {
-            return try await closure(fromHeight, limit)
+        scanBlocksFromHeightFromStateLimitCallsCount += 1
+        scanBlocksFromHeightFromStateLimitReceivedArguments = (fromHeight: fromHeight, fromState: fromState, limit: limit)
+        if let closure = scanBlocksFromHeightFromStateLimitClosure {
+            return try await closure(fromHeight, fromState, limit)
         } else {
-            return scanBlocksFromHeightLimitReturnValue
+            return scanBlocksFromHeightFromStateLimitReturnValue
         }
     }
 
diff --git a/Tests/TestUtils/Stubs.swift b/Tests/TestUtils/Stubs.swift
index f5f33521..69a118ee 100644
--- a/Tests/TestUtils/Stubs.swift
+++ b/Tests/TestUtils/Stubs.swift
@@ -102,8 +102,8 @@ class RustBackendMockHelper {
             try await rustBackend.suggestScanRanges()
         }
 
-        await rustBackendMock.setScanBlocksFromHeightLimitClosure() { fromHeight, limit in
-            try await rustBackend.scanBlocks(fromHeight: fromHeight, limit: limit)
+        await rustBackendMock.setScanBlocksFromHeightFromStateLimitClosure { fromHeight, fromState, limit in
+            try await rustBackend.scanBlocks(fromHeight: fromHeight, fromState: fromState, limit: limit)
         }
     }
 
@@ -145,7 +145,7 @@ extension SynchronizerState {
     static var mock: SynchronizerState {
         SynchronizerState(
             syncSessionID: .nullID,
-            accountBalance: AccountBalance(saplingBalance: .zero, unshielded: Zatoshi(200)),
+            accountBalance: AccountBalance(saplingBalance: .zero, orchardBalance: .zero, unshielded: Zatoshi(200)),
             internalSyncStatus: .syncing(0),
             latestBlockHeight: 222222
         )
diff --git a/Tests/TestUtils/TestDbBuilder.swift b/Tests/TestUtils/TestDbBuilder.swift
index 46082fc7..1f6b2d3a 100644
--- a/Tests/TestUtils/TestDbBuilder.swift
+++ b/Tests/TestUtils/TestDbBuilder.swift
@@ -63,6 +63,8 @@ enum TestDbBuilder {
         case .success: return provider
         case .seedRequired:
             throw ZcashError.compactBlockProcessorDataDbInitFailed("Seed value required to initialize the wallet database")
+        case .seedNotRelevant:
+            throw ZcashError.compactBlockProcessorDataDbInitFailed("Relevant seed value required")
         }
     }
     
diff --git a/Tests/TestUtils/TestVector.swift b/Tests/TestUtils/TestVector.swift
index 7edf0071..4407c4c0 100644
--- a/Tests/TestUtils/TestVector.swift
+++ b/Tests/TestUtils/TestVector.swift
@@ -169,9 +169,9 @@ public let testVector: [[Any?]] =
 [
     ["From https://github.com/zcash-hackworks/zcash-test-vectors/blob/master/unified_address.py"],
     ["p2pkh_bytes, p2sh_bytes, sapling_raw_addr, orchard_raw_addr, unknown_typecode, unknown_bytes, unified_addr, root_seed, account, diversifier_index"],
-    ["7bb83570b8fae146e03c5331a020b1e0892f631d", nil, "d8ef8293d26de832e7193f296ba1922d90f122c6135bc231eebd91efdb03b1a8606771cd4fd6480574d43e", nil, nil, nil, "u1l8xunezsvhq8fgzfl7404m450nwnd76zshscn6nfys7vyz2ywyh4cc5daaq0c7q2su5lqfh23sp7fkf3kt27ve5948mzpfdvckzaect2jtte308mkwlycj2u0eac077wu70vqcetkxf", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 0, 0],
-    ["a7244a362f49f29644a955cf0039b88a61657861", nil, "435b0bbc95b5b7d52531a3944f2b85603ee22aaf850963bc156eb561edf2cbe7cf0e770e393ae5d7049026", nil, nil, nil, "u1fl5mprj0t9p4jg92hjjy8q5myvwc60c9wv0xachauqpn3c3k4xwzlaueafq27dcg7tzzzaz5jl8tyj93wgs983y0jq0qfhzu6n4r8rakpv5f4gg2lrw4z6pyqqcrcqx04d38yunc6je", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 0, 3],
-    ["e256dcb03e05dde7c91212b47a7461311c415059", nil, "69a25a38699708e5f6e76e54e6a7a2ab84dcf288df0d1f2563670168d6c44ace0ef11155c60d5c225e9dec", nil, nil, nil, "u1qxqf8ctkxlsdh7xdcgkdtyw4mku7dxma8tsz45xd6ttgs322gdk7kazg3sdn52z7na3tzcrzf7lt3xrdtfp9d4pccderalchvvxk8hghduxrky5guzqlw65fmgp6x7aj4k8v5jkgwuw", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 0, 4],
+    ["7bb83570b8fae146e03c5331a020b1e0892f631d", nil, "d8ef8293d26de832e7193f296ba1922d90f122c6135bc231eebd91efdb03b1a8606771cd4fd6480574d43e", nil, nil, nil, "u1m2p65qdnhexpfcmejjf6hjqd485xwfsrlf3cvc6wx5xhwrcq8myrdlqyhdpklz5d87ct0epfty0cr9d6q9fqtycx0j3vdhc2tzmkeejhtdqj3zrjqk3dd5ufpqkmueg89e6a6alvpaaxcx4fxsxqk4yj7g8dayn94d3afrsx66m3vq4rk03hc0ufmtkcm8wca7xja42f9kjau9708z7", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 0, 0],
+    ["a7244a362f49f29644a955cf0039b88a61657861", nil, "435b0bbc95b5b7d52531a3944f2b85603ee22aaf850963bc156eb561edf2cbe7cf0e770e393ae5d7049026", nil, nil, nil, "u196qfugjlzacex3pnhj5hgkj7ppjxeg3egcwkn364rnt59nx7p2f4pp35h4v677hla3negz4w0quy9ul6an2azqv0lt7f5n4dz5pspk0uvhkqfft4ntarat6mf0zfc46s5rsvmrd63lvnp2y8kyyes2r0k439de6je9ugy85qkq9ldc7hkkvjav69gzyfl5sen8kfxk3gyhjpzn39xj0", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 0, 3],
+    ["e256dcb03e05dde7c91212b47a7461311c415059", nil, "69a25a38699708e5f6e76e54e6a7a2ab84dcf288df0d1f2563670168d6c44ace0ef11155c60d5c225e9dec", nil, nil, nil, "u1vs0kanmdm4vtp2jy5lfsfspty0l7umph3ny6v9xwqpamvw2adshzsh24ukvc2hamwd8wky7sfalzv4szttsrss26m5yvxnh2r0h9u5vtksr0puhw89h7gm202h5qhn53cm2pt9uj7cwnymmgp26jxe9c0lt5z3egvl03hmdrg6r923t5xudetg2f6kzzn5h6xhaye8wmufnguaj8pws", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 0, 4],
     ["cad268758c5e71493066446b98e71df9d1d6a5ca", nil, "9f6e0bf90a18fc0b9b83ae9f23ad4358648638482b5def8975635b66fd8a708335f9235a3186ec0f033f84", "cecbe5e689a453a3fe10ccf7617e6c1fb382819d7fc9200a1f42092ac84a30378f8c1fb90dff71a6d5042d", nil, nil, "u1pg2aaph7jp8rpf6yhsza25722sg5fcn3vaca6ze27hqjw7jvvhhuxkpcg0ge9xh6drsgdkda8qjq5chpehkcpxf87rnjryjqwymdheptpvnljqqrjqzjwkc2ma6hcq666kgwfytxwac8eyex6ndgr6ezte66706e3vaqrd25dzvzkc69kw0jgywtd0cmq52q5lkw6uh7hyvzjse8ksx", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 1, 3],
     ["8d653347a0fd3cd0842a790a5eaf89d8e3854659", nil, "e1adf156a07d56bcac91bdb2f7bb3ea7c44569dcfee54273c09e8065807b6823faa94a77219554d0f6e017", "24f8a60cbd97e012618d56054ad39241411a28fdd50ee35efa91152f60d5fa21172e5d458ddbcb6b709896", nil, nil, "u19mzuf4l37ny393m59v4mxx4t3uyxkh7qpqjdfvlfk9f504cv9w4fpl7cql0kqvssz8jay8mgl8lnrtvg6yzh9pranjj963acc3h2z2qt7007du0lsmdf862dyy40c3wmt0kq35k5z836tfljgzsqtdsccchayfjpygqzkx24l77ga3ngfgskqddyepz8we7ny4ggmt7q48cgvgu57mz", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 1, 7],
     ["e511f439b5f96cf824cd5e0e6b2eb8ee1bc83cb7", nil, "60ba572f8e379312d86897025decdd64b4b95e2c4afa9d13726b8cc393edb4988c51b976028f890f108bd2", "1f24294ed1b405c7b3b1c3f13db5b9b27b5d0f2aca9d589a69e5be00eb978621e6776e87ea326d47a34c1a", nil, nil, "u1mtxw5nras5glkxz093282sv3n2h8qs7cpxcmmaxj96vtzjzl6rmdaxs4e9es7mxwmd0h3k5wz3ce4ll5g4jz2pn9su4pufq74pxhp4t235n6j7aed3hh8ss7pf3sekf7apsf6vtg84ue5zcq2k9q3xv5yth3q50fu4czdm8sn8q4de3m5k76g2vwwyjsf50hqfxgmwxqxu0rsy22ktw", "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f", 1, 8],