Updated on 2026-08-14
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Tangem
parent
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3 changed files with 414 additions and 26 deletions
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@ -4,22 +4,44 @@ import com.tangem.blockchain.common.Blockchain
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import com.tangem.blockchain.common.isUTXO
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import com.tangem.crypto.hdWallet.DerivationPath
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import com.tangem.domain.models.network.Network
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import timber.log.Timber
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/**
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* Utility class to recognize the account node in a derivation path based on the blockchain type.
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* Derivation path schema: [ m / purpose' / coin_type' / account' / change / address_index ].
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*
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* @param blockchain the blockchain for which the account node is to be recognized
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* @property blockchain the blockchain for which the account node is to be recognized
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*
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* @see [iOS](https://github.com/tangem-developments/tangem-app-ios/blob/f5312a8177afbebda2ff2ed93771f11fae4837bb/Tangem/Domain/Accounts/Common/AccountDerivationPathHelper.swift)
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[REDACTED_AUTHOR]
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*/
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class AccountNodeRecognizer(blockchain: Blockchain) {
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class AccountNodeRecognizer(private val blockchain: Blockchain) {
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/** Index of the account node in the derivation path */
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val accountNodeIndex: Int = if (blockchain.isUTXO) {
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UTXO_BLOCKCHAIN_NODE_INDEX
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} else {
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NON_UTXO_BLOCKCHAIN_NODE_INDEX
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/**
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* Index of the account node in the [derivationPath]
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*/
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@Suppress("MagicNumber")
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fun getAccountNodeIndex(derivationPath: DerivationPath): Int? {
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val nodesCount = derivationPath.nodes.size
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val index = when {
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blockchain == Blockchain.Tezos -> {
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UTXO_BLOCKCHAIN_NODE_INDEX.takeIf { nodesCount == 4 }
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}
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blockchain == Blockchain.Quai || blockchain.isUTXO -> {
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UTXO_BLOCKCHAIN_NODE_INDEX.takeIf { nodesCount == 5 }
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}
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!blockchain.isUTXO -> {
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(nodesCount - 1).takeIf { nodesCount == 3 || nodesCount == 5 }
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}
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else -> null
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}
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if (index == null) {
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Timber.e("Cannot determine account node index for ${blockchain.fullName}: ${derivationPath.rawPath}")
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}
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return index
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}
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/** Recognizes the account node value from the given [derivationPath] */
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@ -42,6 +64,12 @@ class AccountNodeRecognizer(blockchain: Blockchain) {
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/** Recognizes the account node value from the given [derivationPath] */
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fun recognize(derivationPath: DerivationPath): Long? {
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return runCatching {
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if (!blockchain.isAccountsSupported()) {
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Timber.e("Account derivation is not supported for blockchain: ${blockchain.fullName}")
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return null
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}
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val accountNodeIndex = getAccountNodeIndex(derivationPath) ?: return null
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val accountNode = derivationPath.nodes.getOrNull(accountNodeIndex)
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accountNode?.getIndex(includeHardened = false)
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@ -49,8 +77,180 @@ class AccountNodeRecognizer(blockchain: Blockchain) {
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.getOrNull()
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}
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@Suppress("LongMethod")
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private fun Blockchain.isAccountsSupported(): Boolean {
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return when (this) {
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Blockchain.Bitcoin,
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Blockchain.Litecoin,
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Blockchain.Stellar,
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Blockchain.Ethereum,
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Blockchain.EthereumPow,
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Blockchain.Dischain,
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Blockchain.EthereumClassic,
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Blockchain.RSK,
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Blockchain.BitcoinCash,
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Blockchain.Binance,
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Blockchain.Cardano,
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Blockchain.XRP,
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Blockchain.Ducatus,
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Blockchain.Tezos,
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Blockchain.Dogecoin,
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Blockchain.BSC,
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Blockchain.Polygon,
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Blockchain.Avalanche,
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Blockchain.Solana,
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Blockchain.Fantom,
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Blockchain.Polkadot,
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Blockchain.Kusama,
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Blockchain.AlephZero,
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Blockchain.Tron,
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Blockchain.Arbitrum,
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Blockchain.Dash,
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Blockchain.Gnosis,
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Blockchain.Optimism,
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Blockchain.TON,
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Blockchain.Kava,
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Blockchain.Kaspa,
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Blockchain.Ravencoin,
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Blockchain.Cosmos,
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Blockchain.TerraV1,
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Blockchain.TerraV2,
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Blockchain.Cronos,
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Blockchain.Telos,
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Blockchain.OctaSpace,
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Blockchain.Near,
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Blockchain.Decimal,
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Blockchain.VeChain,
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Blockchain.XDC,
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Blockchain.Algorand,
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Blockchain.Shibarium,
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Blockchain.Aptos,
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Blockchain.Hedera,
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Blockchain.Areon,
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Blockchain.Playa3ull,
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Blockchain.PulseChain,
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Blockchain.Aurora,
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Blockchain.Manta,
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Blockchain.ZkSyncEra,
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Blockchain.Moonbeam,
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Blockchain.PolygonZkEVM,
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Blockchain.Moonriver,
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Blockchain.Mantle,
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Blockchain.Flare,
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Blockchain.Taraxa,
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Blockchain.Radiant,
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Blockchain.Base,
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Blockchain.Joystream,
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Blockchain.Bittensor,
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Blockchain.Koinos,
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Blockchain.InternetComputer,
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Blockchain.Cyber,
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Blockchain.Blast,
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Blockchain.Sui,
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Blockchain.Filecoin,
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Blockchain.Sei,
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Blockchain.EnergyWebChain,
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Blockchain.EnergyWebX,
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Blockchain.Core,
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Blockchain.Canxium,
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Blockchain.Casper,
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Blockchain.Chiliz,
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Blockchain.Xodex,
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Blockchain.Clore,
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Blockchain.Fact0rn,
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Blockchain.OdysseyChain,
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Blockchain.Bitrock,
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Blockchain.ApeChain,
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Blockchain.Sonic,
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Blockchain.Alephium,
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Blockchain.VanarChain,
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Blockchain.ZkLinkNova,
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Blockchain.Pepecoin,
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Blockchain.Hyperliquid,
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Blockchain.Scroll,
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Blockchain.Linea,
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Blockchain.ArbitrumNova,
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Blockchain.Quai,
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-> true
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Blockchain.Nexa, // unsupported network
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Blockchain.Chia,
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-> false
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// region Testnet
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Blockchain.Unknown,
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Blockchain.ArbitrumTestnet,
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Blockchain.AvalancheTestnet,
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Blockchain.BinanceTestnet,
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Blockchain.BSCTestnet,
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Blockchain.BitcoinTestnet,
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Blockchain.BitcoinCashTestnet,
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Blockchain.CosmosTestnet,
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Blockchain.EthereumTestnet,
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Blockchain.EthereumClassicTestnet,
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Blockchain.FantomTestnet,
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Blockchain.NearTestnet,
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Blockchain.PolkadotTestnet,
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Blockchain.KavaTestnet,
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Blockchain.PolygonTestnet,
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Blockchain.SeiTestnet,
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Blockchain.StellarTestnet,
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Blockchain.SolanaTestnet,
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Blockchain.TronTestnet,
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Blockchain.OptimismTestnet,
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Blockchain.EthereumPowTestnet,
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Blockchain.KaspaTestnet,
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Blockchain.TelosTestnet,
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Blockchain.TONTestnet,
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Blockchain.RavencoinTestnet,
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Blockchain.AlephZeroTestnet,
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Blockchain.OctaSpaceTestnet,
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Blockchain.ChiaTestnet,
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Blockchain.DecimalTestnet,
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Blockchain.XDCTestnet,
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Blockchain.VeChainTestnet,
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Blockchain.AptosTestnet,
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Blockchain.ShibariumTestnet,
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Blockchain.AlgorandTestnet,
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Blockchain.HederaTestnet,
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Blockchain.AuroraTestnet,
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Blockchain.AreonTestnet,
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Blockchain.PulseChainTestnet,
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Blockchain.ZkSyncEraTestnet,
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Blockchain.NexaTestnet,
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Blockchain.MoonbeamTestnet,
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Blockchain.MantaTestnet,
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Blockchain.PolygonZkEVMTestnet,
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Blockchain.BaseTestnet,
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Blockchain.MoonriverTestnet,
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Blockchain.MantleTestnet,
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Blockchain.FlareTestnet,
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Blockchain.TaraxaTestnet,
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Blockchain.KoinosTestnet,
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Blockchain.BlastTestnet,
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Blockchain.CyberTestnet,
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Blockchain.SuiTestnet,
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Blockchain.EnergyWebChainTestnet,
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Blockchain.EnergyWebXTestnet,
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Blockchain.CasperTestnet,
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Blockchain.CoreTestnet,
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Blockchain.ChilizTestnet,
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Blockchain.AlephiumTestnet,
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Blockchain.VanarChainTestnet,
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Blockchain.OdysseyChainTestnet,
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Blockchain.BitrockTestnet,
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Blockchain.SonicTestnet,
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Blockchain.ApeChainTestnet,
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Blockchain.ScrollTestnet,
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Blockchain.ZkLinkNovaTestnet,
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Blockchain.PepecoinTestnet,
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Blockchain.HyperliquidTestnet,
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Blockchain.QuaiTestnet,
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Blockchain.LineaTestnet,
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-> false
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// endregion
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}
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}
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private companion object {
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const val UTXO_BLOCKCHAIN_NODE_INDEX = 2
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const val NON_UTXO_BLOCKCHAIN_NODE_INDEX = 4
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}
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}
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@ -24,8 +24,8 @@ class MutableDerivationPath internal constructor(val value: DerivationPath) {
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fun replaceAccountNode(value: Long, blockchain: Blockchain): MutableDerivationPath {
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val mutableNodes = this@MutableDerivationPath.value.nodes.toMutableList()
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val accountNodeIndex = AccountNodeRecognizer(blockchain).accountNodeIndex
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val accountNode = mutableNodes.getOrNull(accountNodeIndex)
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val accountNodeIndex = AccountNodeRecognizer(blockchain).getAccountNodeIndex(this@MutableDerivationPath.value)
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val accountNode = accountNodeIndex?.let(mutableNodes::getOrNull)
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if (accountNode != null) {
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mutableNodes[accountNodeIndex] = when (accountNode) {
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