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 730 <span id="727">727</span>
 731 </pre><div class="example-wrap"><pre class="rust ">
 732 <span class="comment">// Magical Bitcoin Library</span>
 733 <span class="comment">// Written in 2020 by</span>
 734 <span class="comment">//     Alekos Filini &lt;alekos.filini@gmail.com&gt;</span>
 735 <span class="comment">//</span>
 736 <span class="comment">// Copyright (c) 2020 Magical Bitcoin</span>
 737 <span class="comment">//</span>
 738 <span class="comment">// Permission is hereby granted, free of charge, to any person obtaining a copy</span>
 739 <span class="comment">// of this software and associated documentation files (the &quot;Software&quot;), to deal</span>
 740 <span class="comment">// in the Software without restriction, including without limitation the rights</span>
 741 <span class="comment">// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell</span>
 742 <span class="comment">// copies of the Software, and to permit persons to whom the Software is</span>
 743 <span class="comment">// furnished to do so, subject to the following conditions:</span>
 744 <span class="comment">//</span>
 745 <span class="comment">// The above copyright notice and this permission notice shall be included in all</span>
 746 <span class="comment">// copies or substantial portions of the Software.</span>
 747 <span class="comment">//</span>
 748 <span class="comment">// THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR</span>
 749 <span class="comment">// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span>
 750 <span class="comment">// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span>
 751 <span class="comment">// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span>
 752 <span class="comment">// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,</span>
 753 <span class="comment">// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span>
 754 <span class="comment">// SOFTWARE.</span>
 755
 756 <span class="doccomment">//! Descriptor templates</span>
 757 <span class="doccomment">//!</span>
 758 <span class="doccomment">//! This module contains the definition of various common script templates that are ready to be</span>
 759 <span class="doccomment">//! used. See the documentation of each template for an example.</span>
 760
 761 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>;
 762 <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">Network</span>;
 763
 764 <span class="kw">use</span> <span class="ident">miniscript</span>::{<span class="ident">Legacy</span>, <span class="ident">Segwitv0</span>};
 765
 766 <span class="kw">use</span> <span class="kw">super</span>::{<span class="ident">ExtendedDescriptor</span>, <span class="ident">KeyMap</span>, <span class="ident">ToWalletDescriptor</span>};
 767 <span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">keys</span>::{<span class="ident">DerivableKey</span>, <span class="ident">KeyError</span>, <span class="ident">ToDescriptorKey</span>, <span class="ident">ValidNetworks</span>};
 768 <span class="kw">use</span> <span class="kw">crate</span>::{<span class="ident">descriptor</span>, <span class="ident">KeychainKind</span>};
 769
 770 <span class="doccomment">/// Type alias for the return type of [`DescriptorTemplate`], [`descriptor!`](crate::descriptor!) and others</span>
 771 <span class="kw">pub</span> <span class="kw">type</span> <span class="ident">DescriptorTemplateOut</span> <span class="op">=</span> (<span class="ident">ExtendedDescriptor</span>, <span class="ident">KeyMap</span>, <span class="ident">ValidNetworks</span>);
 772
 773 <span class="doccomment">/// Trait for descriptor templates that can be built into a full descriptor</span>
 774 <span class="doccomment">///</span>
 775 <span class="doccomment">/// Since [`ToWalletDescriptor`] is implemented for any [`DescriptorTemplate`], they can also be</span>
 776 <span class="doccomment">/// passed directly to the [`Wallet`](crate::Wallet) constructor.</span>
 777 <span class="doccomment">///</span>
 778 <span class="doccomment">/// ## Example</span>
 779 <span class="doccomment">///</span>
 780 <span class="doccomment">/// ```</span>
 781 <span class="doccomment">/// use bdk::keys::{KeyError, ToDescriptorKey};</span>
 782 <span class="doccomment">/// use bdk::miniscript::Legacy;</span>
 783 <span class="doccomment">/// use bdk::template::{DescriptorTemplate, DescriptorTemplateOut};</span>
 784 <span class="doccomment">///</span>
 785 <span class="doccomment">/// struct MyP2PKH&lt;K: ToDescriptorKey&lt;Legacy&gt;&gt;(K);</span>
 786 <span class="doccomment">///</span>
 787 <span class="doccomment">/// impl&lt;K: ToDescriptorKey&lt;Legacy&gt;&gt; DescriptorTemplate for MyP2PKH&lt;K&gt; {</span>
 788 <span class="doccomment">///     fn build(self) -&gt; Result&lt;DescriptorTemplateOut, KeyError&gt; {</span>
 789 <span class="doccomment">///         Ok(bdk::descriptor!(pkh(self.0))?)</span>
 790 <span class="doccomment">///     }</span>
 791 <span class="doccomment">/// }</span>
 792 <span class="doccomment">/// ```</span>
 793 <span class="kw">pub</span> <span class="kw">trait</span> <span class="ident">DescriptorTemplate</span> {
 794     <span class="doccomment">/// Build the complete descriptor</span>
 795     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span>;
 796 }
 797
 798 <span class="doccomment">/// Turns a [`DescriptorTemplate`] into a valid wallet descriptor by calling its</span>
 799 <span class="doccomment">/// [`build`](DescriptorTemplate::build) method</span>
 800 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">T</span>: <span class="ident">DescriptorTemplate</span><span class="op">&gt;</span> <span class="ident">ToWalletDescriptor</span> <span class="kw">for</span> <span class="ident">T</span> {
 801     <span class="kw">fn</span> <span class="ident">to_wallet_descriptor</span>(
 802         <span class="self">self</span>,
 803         <span class="ident">network</span>: <span class="ident">Network</span>,
 804     ) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span>(<span class="ident">ExtendedDescriptor</span>, <span class="ident">KeyMap</span>), <span class="ident">KeyError</span><span class="op">&gt;</span> {
 805         <span class="prelude-val">Ok</span>(<span class="self">self</span>.<span class="ident">build</span>()<span class="question-mark">?</span>.<span class="ident">to_wallet_descriptor</span>(<span class="ident">network</span>)<span class="question-mark">?</span>)
 806     }
 807 }
 808
 809 <span class="doccomment">/// P2PKH template. Expands to a descriptor `pkh(key)`</span>
 810 <span class="doccomment">///</span>
 811 <span class="doccomment">/// ## Example</span>
 812 <span class="doccomment">///</span>
 813 <span class="doccomment">/// ```</span>
 814 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
 815 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet};</span>
 816 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
 817 <span class="doccomment">/// use bdk::template::P2PKH;</span>
 818 <span class="doccomment">///</span>
 819 <span class="doccomment">/// let key =</span>
 820 <span class="doccomment">///     bitcoin::PrivateKey::from_wif(&quot;cTc4vURSzdx6QE6KVynWGomDbLaA75dNALMNyfjh3p8DRRar84Um&quot;)?;</span>
 821 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
 822 <span class="doccomment">///     P2PKH(key),</span>
 823 <span class="doccomment">///     None,</span>
 824 <span class="doccomment">///     Network::Testnet,</span>
 825 <span class="doccomment">///     MemoryDatabase::default(),</span>
 826 <span class="doccomment">/// )?;</span>
 827 <span class="doccomment">///</span>
 828 <span class="doccomment">/// assert_eq!(</span>
 829 <span class="doccomment">///     wallet.get_new_address()?.to_string(),</span>
 830 <span class="doccomment">///     &quot;mwJ8hxFYW19JLuc65RCTaP4v1rzVU8cVMT&quot;</span>
 831 <span class="doccomment">/// );</span>
 832 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
 833 <span class="doccomment">/// ```</span>
 834 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">P2PKH</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">ToDescriptorKey</span><span class="op">&lt;</span><span class="ident">Legacy</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>);
 835
 836 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">ToDescriptorKey</span><span class="op">&lt;</span><span class="ident">Legacy</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">P2PKH</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
 837     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
 838         <span class="prelude-val">Ok</span>(<span class="macro">descriptor</span><span class="macro">!</span>(<span class="ident">pkh</span>(<span class="self">self</span>.<span class="number">0</span>))<span class="question-mark">?</span>)
 839     }
 840 }
 841
 842 <span class="doccomment">/// P2WPKH-P2SH template. Expands to a descriptor `sh(wpkh(key))`</span>
 843 <span class="doccomment">///</span>
 844 <span class="doccomment">/// ## Example</span>
 845 <span class="doccomment">///</span>
 846 <span class="doccomment">/// ```</span>
 847 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
 848 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet};</span>
 849 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
 850 <span class="doccomment">/// use bdk::template::P2WPKH_P2SH;</span>
 851 <span class="doccomment">///</span>
 852 <span class="doccomment">/// let key =</span>
 853 <span class="doccomment">///     bitcoin::PrivateKey::from_wif(&quot;cTc4vURSzdx6QE6KVynWGomDbLaA75dNALMNyfjh3p8DRRar84Um&quot;)?;</span>
 854 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
 855 <span class="doccomment">///     P2WPKH_P2SH(key),</span>
 856 <span class="doccomment">///     None,</span>
 857 <span class="doccomment">///     Network::Testnet,</span>
 858 <span class="doccomment">///     MemoryDatabase::default(),</span>
 859 <span class="doccomment">/// )?;</span>
 860 <span class="doccomment">///</span>
 861 <span class="doccomment">/// assert_eq!(</span>
 862 <span class="doccomment">///     wallet.get_new_address()?.to_string(),</span>
 863 <span class="doccomment">///     &quot;2NB4ox5VDRw1ecUv6SnT3VQHPXveYztRqk5&quot;</span>
 864 <span class="doccomment">/// );</span>
 865 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
 866 <span class="doccomment">/// ```</span>
 867 <span class="attribute">#[<span class="ident">allow</span>(<span class="ident">non_camel_case_types</span>)]</span>
 868 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">P2WPKH_P2SH</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">ToDescriptorKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>);
 869
 870 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">ToDescriptorKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">P2WPKH_P2SH</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
 871     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
 872         <span class="prelude-val">Ok</span>(<span class="macro">descriptor</span><span class="macro">!</span>(<span class="ident">sh</span>(<span class="ident">wpkh</span>(<span class="self">self</span>.<span class="number">0</span>)))<span class="question-mark">?</span>)
 873     }
 874 }
 875
 876 <span class="doccomment">/// P2WPKH template. Expands to a descriptor `wpkh(key)`</span>
 877 <span class="doccomment">///</span>
 878 <span class="doccomment">/// ## Example</span>
 879 <span class="doccomment">///</span>
 880 <span class="doccomment">/// ```</span>
 881 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
 882 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet};</span>
 883 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
 884 <span class="doccomment">/// use bdk::template::P2WPKH;</span>
 885 <span class="doccomment">///</span>
 886 <span class="doccomment">/// let key =</span>
 887 <span class="doccomment">///     bitcoin::PrivateKey::from_wif(&quot;cTc4vURSzdx6QE6KVynWGomDbLaA75dNALMNyfjh3p8DRRar84Um&quot;)?;</span>
 888 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
 889 <span class="doccomment">///     P2WPKH(key),</span>
 890 <span class="doccomment">///     None,</span>
 891 <span class="doccomment">///     Network::Testnet,</span>
 892 <span class="doccomment">///     MemoryDatabase::default(),</span>
 893 <span class="doccomment">/// )?;</span>
 894 <span class="doccomment">///</span>
 895 <span class="doccomment">/// assert_eq!(</span>
 896 <span class="doccomment">///     wallet.get_new_address()?.to_string(),</span>
 897 <span class="doccomment">///     &quot;tb1q4525hmgw265tl3drrl8jjta7ayffu6jf68ltjd&quot;</span>
 898 <span class="doccomment">/// );</span>
 899 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
 900 <span class="doccomment">/// ```</span>
 901 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">P2WPKH</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">ToDescriptorKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>);
 902
 903 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">ToDescriptorKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">P2WPKH</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
 904     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
 905         <span class="prelude-val">Ok</span>(<span class="macro">descriptor</span><span class="macro">!</span>(<span class="ident">wpkh</span>(<span class="self">self</span>.<span class="number">0</span>))<span class="question-mark">?</span>)
 906     }
 907 }
 908
 909 <span class="doccomment">/// BIP44 template. Expands to `pkh(key/44&#39;/0&#39;/0&#39;/{0,1}/*)`</span>
 910 <span class="doccomment">///</span>
 911 <span class="doccomment">/// Since there are hardened derivation steps, this template requires a private derivable key (generally a `xprv`/`tprv`).</span>
 912 <span class="doccomment">///</span>
 913 <span class="doccomment">/// See [`BIP44Public`] for a template that can work with a `xpub`/`tpub`.</span>
 914 <span class="doccomment">///</span>
 915 <span class="doccomment">/// ## Example</span>
 916 <span class="doccomment">///</span>
 917 <span class="doccomment">/// ```</span>
 918 <span class="doccomment">/// # use std::str::FromStr;</span>
 919 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
 920 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet, KeychainKind};</span>
 921 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
 922 <span class="doccomment">/// use bdk::template::BIP44;</span>
 923 <span class="doccomment">///</span>
 924 <span class="doccomment">/// let key = bitcoin::util::bip32::ExtendedPrivKey::from_str(&quot;tprv8ZgxMBicQKsPeZRHk4rTG6orPS2CRNFX3njhUXx5vj9qGog5ZMH4uGReDWN5kCkY3jmWEtWause41CDvBRXD1shKknAMKxT99o9qUTRVC6m&quot;)?;</span>
 925 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
 926 <span class="doccomment">///     BIP44(key.clone(), KeychainKind::External),</span>
 927 <span class="doccomment">///     Some(BIP44(key, KeychainKind::Internal)),</span>
 928 <span class="doccomment">///     Network::Testnet,</span>
 929 <span class="doccomment">///     MemoryDatabase::default()</span>
 930 <span class="doccomment">/// )?;</span>
 931 <span class="doccomment">///</span>
 932 <span class="doccomment">/// assert_eq!(wallet.get_new_address()?.to_string(), &quot;miNG7dJTzJqNbFS19svRdTCisC65dsubtR&quot;);</span>
 933 <span class="doccomment">/// assert_eq!(wallet.public_descriptor(KeychainKind::External)?.unwrap().to_string(), &quot;pkh([c55b303f/44&#39;/0&#39;/0&#39;]tpubDDDzQ31JkZB7VxUr9bjvBivDdqoFLrDPyLWtLapArAi51ftfmCb2DPxwLQzX65iNcXz1DGaVvyvo6JQ6rTU73r2gqdEo8uov9QKRb7nKCSU/0/*)&quot;);</span>
 934 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
 935 <span class="doccomment">/// ```</span>
 936 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BIP44</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Legacy</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>, <span class="kw">pub</span> <span class="ident">KeychainKind</span>);
 937
 938 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Legacy</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">BIP44</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
 939     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
 940         <span class="prelude-val">Ok</span>(<span class="ident">P2PKH</span>(<span class="ident">legacy</span>::<span class="ident">make_bipxx_private</span>(<span class="number">44</span>, <span class="self">self</span>.<span class="number">0</span>, <span class="self">self</span>.<span class="number">1</span>)<span class="question-mark">?</span>).<span class="ident">build</span>()<span class="question-mark">?</span>)
 941     }
 942 }
 943
 944 <span class="doccomment">/// BIP44 public template. Expands to `pkh(key/{0,1}/*)`</span>
 945 <span class="doccomment">///</span>
 946 <span class="doccomment">/// This assumes that the key used has already been derived with `m/44&#39;/0&#39;/0&#39;`.</span>
 947 <span class="doccomment">///</span>
 948 <span class="doccomment">/// This template requires the parent fingerprint to populate correctly the metadata of PSBTs.</span>
 949 <span class="doccomment">///</span>
 950 <span class="doccomment">/// See [`BIP44`] for a template that does the full derivation, but requires private data</span>
 951 <span class="doccomment">/// for the key.</span>
 952 <span class="doccomment">///</span>
 953 <span class="doccomment">/// ## Example</span>
 954 <span class="doccomment">///</span>
 955 <span class="doccomment">/// ```</span>
 956 <span class="doccomment">/// # use std::str::FromStr;</span>
 957 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
 958 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet, KeychainKind};</span>
 959 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
 960 <span class="doccomment">/// use bdk::template::BIP44Public;</span>
 961 <span class="doccomment">///</span>
 962 <span class="doccomment">/// let key = bitcoin::util::bip32::ExtendedPubKey::from_str(&quot;tpubDDDzQ31JkZB7VxUr9bjvBivDdqoFLrDPyLWtLapArAi51ftfmCb2DPxwLQzX65iNcXz1DGaVvyvo6JQ6rTU73r2gqdEo8uov9QKRb7nKCSU&quot;)?;</span>
 963 <span class="doccomment">/// let fingerprint = bitcoin::util::bip32::Fingerprint::from_str(&quot;c55b303f&quot;)?;</span>
 964 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
 965 <span class="doccomment">///     BIP44Public(key.clone(), fingerprint, KeychainKind::External),</span>
 966 <span class="doccomment">///     Some(BIP44Public(key, fingerprint, KeychainKind::Internal)),</span>
 967 <span class="doccomment">///     Network::Testnet,</span>
 968 <span class="doccomment">///     MemoryDatabase::default()</span>
 969 <span class="doccomment">/// )?;</span>
 970 <span class="doccomment">///</span>
 971 <span class="doccomment">/// assert_eq!(wallet.get_new_address()?.to_string(), &quot;miNG7dJTzJqNbFS19svRdTCisC65dsubtR&quot;);</span>
 972 <span class="doccomment">/// assert_eq!(wallet.public_descriptor(KeychainKind::External)?.unwrap().to_string(), &quot;pkh([c55b303f/44&#39;/0&#39;/0&#39;]tpubDDDzQ31JkZB7VxUr9bjvBivDdqoFLrDPyLWtLapArAi51ftfmCb2DPxwLQzX65iNcXz1DGaVvyvo6JQ6rTU73r2gqdEo8uov9QKRb7nKCSU/0/*)&quot;);</span>
 973 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
 974 <span class="doccomment">/// ```</span>
 975 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BIP44Public</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Legacy</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>, <span class="kw">pub</span> <span class="ident">bip32</span>::<span class="ident">Fingerprint</span>, <span class="kw">pub</span> <span class="ident">KeychainKind</span>);
 976
 977 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Legacy</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">BIP44Public</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
 978     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
 979         <span class="prelude-val">Ok</span>(<span class="ident">P2PKH</span>(<span class="ident">legacy</span>::<span class="ident">make_bipxx_public</span>(<span class="number">44</span>, <span class="self">self</span>.<span class="number">0</span>, <span class="self">self</span>.<span class="number">1</span>, <span class="self">self</span>.<span class="number">2</span>)<span class="question-mark">?</span>).<span class="ident">build</span>()<span class="question-mark">?</span>)
 980     }
 981 }
 982
 983 <span class="doccomment">/// BIP49 template. Expands to `sh(wpkh(key/49&#39;/0&#39;/0&#39;/{0,1}/*))`</span>
 984 <span class="doccomment">///</span>
 985 <span class="doccomment">/// Since there are hardened derivation steps, this template requires a private derivable key (generally a `xprv`/`tprv`).</span>
 986 <span class="doccomment">///</span>
 987 <span class="doccomment">/// See [`BIP49Public`] for a template that can work with a `xpub`/`tpub`.</span>
 988 <span class="doccomment">///</span>
 989 <span class="doccomment">/// ## Example</span>
 990 <span class="doccomment">///</span>
 991 <span class="doccomment">/// ```</span>
 992 <span class="doccomment">/// # use std::str::FromStr;</span>
 993 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
 994 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet, KeychainKind};</span>
 995 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
 996 <span class="doccomment">/// use bdk::template::BIP49;</span>
 997 <span class="doccomment">///</span>
 998 <span class="doccomment">/// let key = bitcoin::util::bip32::ExtendedPrivKey::from_str(&quot;tprv8ZgxMBicQKsPeZRHk4rTG6orPS2CRNFX3njhUXx5vj9qGog5ZMH4uGReDWN5kCkY3jmWEtWause41CDvBRXD1shKknAMKxT99o9qUTRVC6m&quot;)?;</span>
 999 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
1000 <span class="doccomment">///     BIP49(key.clone(), KeychainKind::External),</span>
1001 <span class="doccomment">///     Some(BIP49(key, KeychainKind::Internal)),</span>
1002 <span class="doccomment">///     Network::Testnet,</span>
1003 <span class="doccomment">///     MemoryDatabase::default()</span>
1004 <span class="doccomment">/// )?;</span>
1005 <span class="doccomment">///</span>
1006 <span class="doccomment">/// assert_eq!(wallet.get_new_address()?.to_string(), &quot;2N3K4xbVAHoiTQSwxkZjWDfKoNC27pLkYnt&quot;);</span>
1007 <span class="doccomment">/// assert_eq!(wallet.public_descriptor(KeychainKind::External)?.unwrap().to_string(), &quot;sh(wpkh([c55b303f/49\&#39;/0\&#39;/0\&#39;]tpubDC49r947KGK52X5rBWS4BLs5m9SRY3pYHnvRrm7HcybZ3BfdEsGFyzCMzayi1u58eT82ZeyFZwH7DD6Q83E3fM9CpfMtmnTygnLfP59jL9L/0/*))&quot;);</span>
1008 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
1009 <span class="doccomment">/// ```</span>
1010 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BIP49</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>, <span class="kw">pub</span> <span class="ident">KeychainKind</span>);
1011
1012 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">BIP49</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
1013     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
1014         <span class="prelude-val">Ok</span>(<span class="ident">P2WPKH_P2SH</span>(<span class="ident">segwit_v0</span>::<span class="ident">make_bipxx_private</span>(<span class="number">49</span>, <span class="self">self</span>.<span class="number">0</span>, <span class="self">self</span>.<span class="number">1</span>)<span class="question-mark">?</span>).<span class="ident">build</span>()<span class="question-mark">?</span>)
1015     }
1016 }
1017
1018 <span class="doccomment">/// BIP49 public template. Expands to `sh(wpkh(key/{0,1}/*))`</span>
1019 <span class="doccomment">///</span>
1020 <span class="doccomment">/// This assumes that the key used has already been derived with `m/49&#39;/0&#39;/0&#39;`.</span>
1021 <span class="doccomment">///</span>
1022 <span class="doccomment">/// This template requires the parent fingerprint to populate correctly the metadata of PSBTs.</span>
1023 <span class="doccomment">///</span>
1024 <span class="doccomment">/// See [`BIP49`] for a template that does the full derivation, but requires private data</span>
1025 <span class="doccomment">/// for the key.</span>
1026 <span class="doccomment">///</span>
1027 <span class="doccomment">/// ## Example</span>
1028 <span class="doccomment">///</span>
1029 <span class="doccomment">/// ```</span>
1030 <span class="doccomment">/// # use std::str::FromStr;</span>
1031 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
1032 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet, KeychainKind};</span>
1033 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
1034 <span class="doccomment">/// use bdk::template::BIP49Public;</span>
1035 <span class="doccomment">///</span>
1036 <span class="doccomment">/// let key = bitcoin::util::bip32::ExtendedPubKey::from_str(&quot;tpubDC49r947KGK52X5rBWS4BLs5m9SRY3pYHnvRrm7HcybZ3BfdEsGFyzCMzayi1u58eT82ZeyFZwH7DD6Q83E3fM9CpfMtmnTygnLfP59jL9L&quot;)?;</span>
1037 <span class="doccomment">/// let fingerprint = bitcoin::util::bip32::Fingerprint::from_str(&quot;c55b303f&quot;)?;</span>
1038 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
1039 <span class="doccomment">///     BIP49Public(key.clone(), fingerprint, KeychainKind::External),</span>
1040 <span class="doccomment">///     Some(BIP49Public(key, fingerprint, KeychainKind::Internal)),</span>
1041 <span class="doccomment">///     Network::Testnet,</span>
1042 <span class="doccomment">///     MemoryDatabase::default()</span>
1043 <span class="doccomment">/// )?;</span>
1044 <span class="doccomment">///</span>
1045 <span class="doccomment">/// assert_eq!(wallet.get_new_address()?.to_string(), &quot;2N3K4xbVAHoiTQSwxkZjWDfKoNC27pLkYnt&quot;);</span>
1046 <span class="doccomment">/// assert_eq!(wallet.public_descriptor(KeychainKind::External)?.unwrap().to_string(), &quot;sh(wpkh([c55b303f/49\&#39;/0\&#39;/0\&#39;]tpubDC49r947KGK52X5rBWS4BLs5m9SRY3pYHnvRrm7HcybZ3BfdEsGFyzCMzayi1u58eT82ZeyFZwH7DD6Q83E3fM9CpfMtmnTygnLfP59jL9L/0/*))&quot;);</span>
1047 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
1048 <span class="doccomment">/// ```</span>
1049 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BIP49Public</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>, <span class="kw">pub</span> <span class="ident">bip32</span>::<span class="ident">Fingerprint</span>, <span class="kw">pub</span> <span class="ident">KeychainKind</span>);
1050
1051 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">BIP49Public</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
1052     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
1053         <span class="prelude-val">Ok</span>(<span class="ident">P2WPKH_P2SH</span>(<span class="ident">segwit_v0</span>::<span class="ident">make_bipxx_public</span>(<span class="number">49</span>, <span class="self">self</span>.<span class="number">0</span>, <span class="self">self</span>.<span class="number">1</span>, <span class="self">self</span>.<span class="number">2</span>)<span class="question-mark">?</span>).<span class="ident">build</span>()<span class="question-mark">?</span>)
1054     }
1055 }
1056
1057 <span class="doccomment">/// BIP84 template. Expands to `wpkh(key/84&#39;/0&#39;/0&#39;/{0,1}/*)`</span>
1058 <span class="doccomment">///</span>
1059 <span class="doccomment">/// Since there are hardened derivation steps, this template requires a private derivable key (generally a `xprv`/`tprv`).</span>
1060 <span class="doccomment">///</span>
1061 <span class="doccomment">/// See [`BIP84Public`] for a template that can work with a `xpub`/`tpub`.</span>
1062 <span class="doccomment">///</span>
1063 <span class="doccomment">/// ## Example</span>
1064 <span class="doccomment">///</span>
1065 <span class="doccomment">/// ```</span>
1066 <span class="doccomment">/// # use std::str::FromStr;</span>
1067 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
1068 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet, KeychainKind};</span>
1069 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
1070 <span class="doccomment">/// use bdk::template::BIP84;</span>
1071 <span class="doccomment">///</span>
1072 <span class="doccomment">/// let key = bitcoin::util::bip32::ExtendedPrivKey::from_str(&quot;tprv8ZgxMBicQKsPeZRHk4rTG6orPS2CRNFX3njhUXx5vj9qGog5ZMH4uGReDWN5kCkY3jmWEtWause41CDvBRXD1shKknAMKxT99o9qUTRVC6m&quot;)?;</span>
1073 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
1074 <span class="doccomment">///     BIP84(key.clone(), KeychainKind::External),</span>
1075 <span class="doccomment">///     Some(BIP84(key, KeychainKind::Internal)),</span>
1076 <span class="doccomment">///     Network::Testnet,</span>
1077 <span class="doccomment">///     MemoryDatabase::default()</span>
1078 <span class="doccomment">/// )?;</span>
1079 <span class="doccomment">///</span>
1080 <span class="doccomment">/// assert_eq!(wallet.get_new_address()?.to_string(), &quot;tb1qedg9fdlf8cnnqfd5mks6uz5w4kgpk2pr6y4qc7&quot;);</span>
1081 <span class="doccomment">/// assert_eq!(wallet.public_descriptor(KeychainKind::External)?.unwrap().to_string(), &quot;wpkh([c55b303f/84\&#39;/0\&#39;/0\&#39;]tpubDC2Qwo2TFsaNC4ju8nrUJ9mqVT3eSgdmy1yPqhgkjwmke3PRXutNGRYAUo6RCHTcVQaDR3ohNU9we59brGHuEKPvH1ags2nevW5opEE9Z5Q/0/*)&quot;);</span>
1082 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
1083 <span class="doccomment">/// ```</span>
1084 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BIP84</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>, <span class="kw">pub</span> <span class="ident">KeychainKind</span>);
1085
1086 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">BIP84</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
1087     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
1088         <span class="prelude-val">Ok</span>(<span class="ident">P2WPKH</span>(<span class="ident">segwit_v0</span>::<span class="ident">make_bipxx_private</span>(<span class="number">84</span>, <span class="self">self</span>.<span class="number">0</span>, <span class="self">self</span>.<span class="number">1</span>)<span class="question-mark">?</span>).<span class="ident">build</span>()<span class="question-mark">?</span>)
1089     }
1090 }
1091
1092 <span class="doccomment">/// BIP84 public template. Expands to `wpkh(key/{0,1}/*)`</span>
1093 <span class="doccomment">///</span>
1094 <span class="doccomment">/// This assumes that the key used has already been derived with `m/84&#39;/0&#39;/0&#39;`.</span>
1095 <span class="doccomment">///</span>
1096 <span class="doccomment">/// This template requires the parent fingerprint to populate correctly the metadata of PSBTs.</span>
1097 <span class="doccomment">///</span>
1098 <span class="doccomment">/// See [`BIP84`] for a template that does the full derivation, but requires private data</span>
1099 <span class="doccomment">/// for the key.</span>
1100 <span class="doccomment">///</span>
1101 <span class="doccomment">/// ## Example</span>
1102 <span class="doccomment">///</span>
1103 <span class="doccomment">/// ```</span>
1104 <span class="doccomment">/// # use std::str::FromStr;</span>
1105 <span class="doccomment">/// # use bdk::bitcoin::{PrivateKey, Network};</span>
1106 <span class="doccomment">/// # use bdk::{Wallet, OfflineWallet, KeychainKind};</span>
1107 <span class="doccomment">/// # use bdk::database::MemoryDatabase;</span>
1108 <span class="doccomment">/// use bdk::template::BIP84Public;</span>
1109 <span class="doccomment">///</span>
1110 <span class="doccomment">/// let key = bitcoin::util::bip32::ExtendedPubKey::from_str(&quot;tpubDC2Qwo2TFsaNC4ju8nrUJ9mqVT3eSgdmy1yPqhgkjwmke3PRXutNGRYAUo6RCHTcVQaDR3ohNU9we59brGHuEKPvH1ags2nevW5opEE9Z5Q&quot;)?;</span>
1111 <span class="doccomment">/// let fingerprint = bitcoin::util::bip32::Fingerprint::from_str(&quot;c55b303f&quot;)?;</span>
1112 <span class="doccomment">/// let wallet: OfflineWallet&lt;_&gt; = Wallet::new_offline(</span>
1113 <span class="doccomment">///     BIP84Public(key.clone(), fingerprint, KeychainKind::External),</span>
1114 <span class="doccomment">///     Some(BIP84Public(key, fingerprint, KeychainKind::Internal)),</span>
1115 <span class="doccomment">///     Network::Testnet,</span>
1116 <span class="doccomment">///     MemoryDatabase::default()</span>
1117 <span class="doccomment">/// )?;</span>
1118 <span class="doccomment">///</span>
1119 <span class="doccomment">/// assert_eq!(wallet.get_new_address()?.to_string(), &quot;tb1qedg9fdlf8cnnqfd5mks6uz5w4kgpk2pr6y4qc7&quot;);</span>
1120 <span class="doccomment">/// assert_eq!(wallet.public_descriptor(KeychainKind::External)?.unwrap().to_string(), &quot;wpkh([c55b303f/84\&#39;/0\&#39;/0\&#39;]tpubDC2Qwo2TFsaNC4ju8nrUJ9mqVT3eSgdmy1yPqhgkjwmke3PRXutNGRYAUo6RCHTcVQaDR3ohNU9we59brGHuEKPvH1ags2nevW5opEE9Z5Q/0/*)&quot;);</span>
1121 <span class="doccomment">/// # Ok::&lt;_, Box&lt;dyn std::error::Error&gt;&gt;(())</span>
1122 <span class="doccomment">/// ```</span>
1123 <span class="kw">pub</span> <span class="kw">struct</span> <span class="ident">BIP84Public</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span>(<span class="kw">pub</span> <span class="ident">K</span>, <span class="kw">pub</span> <span class="ident">bip32</span>::<span class="ident">Fingerprint</span>, <span class="kw">pub</span> <span class="ident">KeychainKind</span>);
1124
1125 <span class="kw">impl</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="ident">Segwitv0</span><span class="op">&gt;</span><span class="op">&gt;</span> <span class="ident">DescriptorTemplate</span> <span class="kw">for</span> <span class="ident">BIP84Public</span><span class="op">&lt;</span><span class="ident">K</span><span class="op">&gt;</span> {
1126     <span class="kw">fn</span> <span class="ident">build</span>(<span class="self">self</span>) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="ident">DescriptorTemplateOut</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
1127         <span class="prelude-val">Ok</span>(<span class="ident">P2WPKH</span>(<span class="ident">segwit_v0</span>::<span class="ident">make_bipxx_public</span>(<span class="number">84</span>, <span class="self">self</span>.<span class="number">0</span>, <span class="self">self</span>.<span class="number">1</span>, <span class="self">self</span>.<span class="number">2</span>)<span class="question-mark">?</span>).<span class="ident">build</span>()<span class="question-mark">?</span>)
1128     }
1129 }
1130
1131 <span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">expand_make_bipxx</span> {
1132     ( <span class="macro-nonterminal">$</span><span class="macro-nonterminal">mod_name</span>:<span class="ident">ident</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">ctx</span>:<span class="ident">ty</span> ) <span class="op">=</span><span class="op">&gt;</span> {
1133         <span class="kw">mod</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">mod_name</span> {
1134             <span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;
1135
1136             <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn</span> <span class="ident">make_bipxx_private</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">ctx</span><span class="op">&gt;</span><span class="op">&gt;</span>(
1137                 <span class="ident">bip</span>: <span class="ident">u32</span>,
1138                 <span class="ident">key</span>: <span class="ident">K</span>,
1139                 <span class="ident">keychain</span>: <span class="ident">KeychainKind</span>,
1140             ) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="kw">impl</span> <span class="ident">ToDescriptorKey</span><span class="op">&lt;</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">ctx</span><span class="op">&gt;</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
1141                 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">derivation_path</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="number">4</span>);
1142                 <span class="ident">derivation_path</span>.<span class="ident">push</span>(<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_hardened_idx</span>(<span class="ident">bip</span>)<span class="question-mark">?</span>);
1143                 <span class="ident">derivation_path</span>.<span class="ident">push</span>(<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_hardened_idx</span>(<span class="number">0</span>)<span class="question-mark">?</span>);
1144                 <span class="ident">derivation_path</span>.<span class="ident">push</span>(<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_hardened_idx</span>(<span class="number">0</span>)<span class="question-mark">?</span>);
1145
1146                 <span class="kw">match</span> <span class="ident">keychain</span> {
1147                     <span class="ident">KeychainKind</span>::<span class="ident">External</span> <span class="op">=</span><span class="op">&gt;</span> {
1148                         <span class="ident">derivation_path</span>.<span class="ident">push</span>(<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_normal_idx</span>(<span class="number">0</span>)<span class="question-mark">?</span>)
1149                     }
1150                     <span class="ident">KeychainKind</span>::<span class="ident">Internal</span> <span class="op">=</span><span class="op">&gt;</span> {
1151                         <span class="ident">derivation_path</span>.<span class="ident">push</span>(<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_normal_idx</span>(<span class="number">1</span>)<span class="question-mark">?</span>)
1152                     }
1153                 };
1154
1155                 <span class="kw">let</span> <span class="ident">derivation_path</span>: <span class="ident">bip32</span>::<span class="ident">DerivationPath</span> <span class="op">=</span> <span class="ident">derivation_path</span>.<span class="ident">into</span>();
1156
1157                 <span class="prelude-val">Ok</span>((<span class="ident">key</span>, <span class="ident">derivation_path</span>))
1158             }
1159             <span class="kw">pub</span>(<span class="kw">super</span>) <span class="kw">fn</span> <span class="ident">make_bipxx_public</span><span class="op">&lt;</span><span class="ident">K</span>: <span class="ident">DerivableKey</span><span class="op">&lt;</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">ctx</span><span class="op">&gt;</span><span class="op">&gt;</span>(
1160                 <span class="ident">bip</span>: <span class="ident">u32</span>,
1161                 <span class="ident">key</span>: <span class="ident">K</span>,
1162                 <span class="ident">parent_fingerprint</span>: <span class="ident">bip32</span>::<span class="ident">Fingerprint</span>,
1163                 <span class="ident">keychain</span>: <span class="ident">KeychainKind</span>,
1164             ) <span class="op">-</span><span class="op">&gt;</span> <span class="prelude-ty">Result</span><span class="op">&lt;</span><span class="kw">impl</span> <span class="ident">ToDescriptorKey</span><span class="op">&lt;</span><span class="macro-nonterminal">$</span><span class="macro-nonterminal">ctx</span><span class="op">&gt;</span>, <span class="ident">KeyError</span><span class="op">&gt;</span> {
1165                 <span class="kw">let</span> <span class="ident">derivation_path</span>: <span class="ident">bip32</span>::<span class="ident">DerivationPath</span> <span class="op">=</span> <span class="kw">match</span> <span class="ident">keychain</span> {
1166                     <span class="ident">KeychainKind</span>::<span class="ident">External</span> <span class="op">=</span><span class="op">&gt;</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_normal_idx</span>(<span class="number">0</span>)<span class="question-mark">?</span>].<span class="ident">into</span>(),
1167                     <span class="ident">KeychainKind</span>::<span class="ident">Internal</span> <span class="op">=</span><span class="op">&gt;</span> <span class="macro">vec</span><span class="macro">!</span>[<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_normal_idx</span>(<span class="number">1</span>)<span class="question-mark">?</span>].<span class="ident">into</span>(),
1168                 };
1169
1170                 <span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">source_path</span> <span class="op">=</span> <span class="ident">Vec</span>::<span class="ident">with_capacity</span>(<span class="number">3</span>);
1171                 <span class="ident">source_path</span>.<span class="ident">push</span>(<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_hardened_idx</span>(<span class="ident">bip</span>)<span class="question-mark">?</span>);
1172                 <span class="ident">source_path</span>.<span class="ident">push</span>(<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_hardened_idx</span>(<span class="number">0</span>)<span class="question-mark">?</span>);
1173                 <span class="ident">source_path</span>.<span class="ident">push</span>(<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>::<span class="ident">from_hardened_idx</span>(<span class="number">0</span>)<span class="question-mark">?</span>);
1174                 <span class="kw">let</span> <span class="ident">source_path</span>: <span class="ident">bip32</span>::<span class="ident">DerivationPath</span> <span class="op">=</span> <span class="ident">source_path</span>.<span class="ident">into</span>();
1175
1176                 <span class="prelude-val">Ok</span>((<span class="ident">key</span>, (<span class="ident">parent_fingerprint</span>, <span class="ident">source_path</span>), <span class="ident">derivation_path</span>))
1177             }
1178         }
1179     };
1180 }
1181
1182 <span class="macro">expand_make_bipxx</span><span class="macro">!</span>(<span class="ident">legacy</span>, <span class="ident">Legacy</span>);
1183 <span class="macro">expand_make_bipxx</span><span class="macro">!</span>(<span class="ident">segwit_v0</span>, <span class="ident">Segwitv0</span>);
1184
1185 <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
1186 <span class="kw">mod</span> <span class="ident">test</span> {
1187     <span class="comment">// test existing descriptor templates, make sure they are expanded to the right descriptors</span>
1188
1189     <span class="kw">use</span> <span class="kw">super</span>::<span class="kw-2">*</span>;
1190     <span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">descriptor</span>::<span class="ident">DescriptorMeta</span>;
1191     <span class="kw">use</span> <span class="kw">crate</span>::<span class="ident">keys</span>::{<span class="ident">KeyError</span>, <span class="ident">ValidNetworks</span>};
1192     <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">hashes</span>::<span class="ident">core</span>::<span class="ident">str</span>::<span class="ident">FromStr</span>;
1193     <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">network</span>::<span class="ident">constants</span>::<span class="ident">Network</span>::<span class="ident">Regtest</span>;
1194     <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">secp256k1</span>::<span class="ident">Secp256k1</span>;
1195     <span class="kw">use</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">ChildNumber</span>;
1196     <span class="kw">use</span> <span class="ident">miniscript</span>::<span class="ident">descriptor</span>::{<span class="ident">DescriptorPublicKey</span>, <span class="ident">DescriptorPublicKeyCtx</span>, <span class="ident">KeyMap</span>};
1197     <span class="kw">use</span> <span class="ident">miniscript</span>::<span class="ident">Descriptor</span>;
1198
1199     <span class="comment">// verify template descriptor generates expected address(es)</span>
1200     <span class="kw">fn</span> <span class="ident">check</span>(
1201         <span class="ident">desc</span>: <span class="prelude-ty">Result</span><span class="op">&lt;</span>(<span class="ident">Descriptor</span><span class="op">&lt;</span><span class="ident">DescriptorPublicKey</span><span class="op">&gt;</span>, <span class="ident">KeyMap</span>, <span class="ident">ValidNetworks</span>), <span class="ident">KeyError</span><span class="op">&gt;</span>,
1202         <span class="ident">is_witness</span>: <span class="ident">bool</span>,
1203         <span class="ident">is_fixed</span>: <span class="ident">bool</span>,
1204         <span class="ident">expected</span>: <span class="kw-2">&amp;</span>[<span class="kw-2">&amp;</span><span class="ident">str</span>],
1205     ) {
1206         <span class="kw">let</span> <span class="ident">secp</span> <span class="op">=</span> <span class="ident">Secp256k1</span>::<span class="ident">new</span>();
1207         <span class="kw">let</span> <span class="ident">deriv_ctx</span> <span class="op">=</span>
1208             <span class="ident">DescriptorPublicKeyCtx</span>::<span class="ident">new</span>(<span class="kw-2">&amp;</span><span class="ident">secp</span>, <span class="ident">ChildNumber</span>::<span class="ident">from_normal_idx</span>(<span class="number">0</span>).<span class="ident">unwrap</span>());
1209
1210         <span class="kw">let</span> (<span class="ident">desc</span>, <span class="ident">_key_map</span>, <span class="ident">_networks</span>) <span class="op">=</span> <span class="ident">desc</span>.<span class="ident">unwrap</span>();
1211         <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">desc</span>.<span class="ident">is_witness</span>(), <span class="ident">is_witness</span>);
1212         <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">desc</span>.<span class="ident">is_fixed</span>(), <span class="ident">is_fixed</span>);
1213         <span class="kw">for</span> <span class="ident">i</span> <span class="kw">in</span> <span class="number">0</span>..<span class="ident">expected</span>.<span class="ident">len</span>() {
1214             <span class="kw">let</span> <span class="ident">index</span> <span class="op">=</span> <span class="ident">i</span> <span class="kw">as</span> <span class="ident">u32</span>;
1215             <span class="kw">let</span> <span class="ident">child_desc</span> <span class="op">=</span> <span class="kw">if</span> <span class="ident">desc</span>.<span class="ident">is_fixed</span>() {
1216                 <span class="ident">desc</span>.<span class="ident">clone</span>()
1217             } <span class="kw">else</span> {
1218                 <span class="ident">desc</span>.<span class="ident">derive</span>(<span class="ident">ChildNumber</span>::<span class="ident">from_normal_idx</span>(<span class="ident">index</span>).<span class="ident">unwrap</span>())
1219             };
1220             <span class="kw">let</span> <span class="ident">address</span> <span class="op">=</span> <span class="ident">child_desc</span>.<span class="ident">address</span>(<span class="ident">Regtest</span>, <span class="ident">deriv_ctx</span>).<span class="ident">unwrap</span>();
1221             <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">address</span>.<span class="ident">to_string</span>(), <span class="kw-2">*</span><span class="ident">expected</span>.<span class="ident">get</span>(<span class="ident">i</span>).<span class="ident">unwrap</span>());
1222         }
1223     }
1224
1225     <span class="comment">// P2PKH</span>
1226     <span class="attribute">#[<span class="ident">test</span>]</span>
1227     <span class="kw">fn</span> <span class="ident">test_p2ph_template</span>() {
1228         <span class="kw">let</span> <span class="ident">prvkey</span> <span class="op">=</span>
1229             <span class="ident">bitcoin</span>::<span class="ident">PrivateKey</span>::<span class="ident">from_wif</span>(<span class="string">&quot;cTc4vURSzdx6QE6KVynWGomDbLaA75dNALMNyfjh3p8DRRar84Um&quot;</span>)
1230                 .<span class="ident">unwrap</span>();
1231         <span class="ident">check</span>(
1232             <span class="ident">P2PKH</span>(<span class="ident">prvkey</span>).<span class="ident">build</span>(),
1233             <span class="bool-val">false</span>,
1234             <span class="bool-val">true</span>,
1235             <span class="kw-2">&amp;</span>[<span class="string">&quot;mwJ8hxFYW19JLuc65RCTaP4v1rzVU8cVMT&quot;</span>],
1236         );
1237
1238         <span class="kw">let</span> <span class="ident">pubkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">PublicKey</span>::<span class="ident">from_str</span>(
1239             <span class="string">&quot;03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd&quot;</span>,
1240         )
1241         .<span class="ident">unwrap</span>();
1242         <span class="ident">check</span>(
1243             <span class="ident">P2PKH</span>(<span class="ident">pubkey</span>).<span class="ident">build</span>(),
1244             <span class="bool-val">false</span>,
1245             <span class="bool-val">true</span>,
1246             <span class="kw-2">&amp;</span>[<span class="string">&quot;muZpTpBYhxmRFuCjLc7C6BBDF32C8XVJUi&quot;</span>],
1247         );
1248     }
1249
1250     <span class="comment">// P2WPKH-P2SH `sh(wpkh(key))`</span>
1251     <span class="attribute">#[<span class="ident">test</span>]</span>
1252     <span class="kw">fn</span> <span class="ident">test_p2wphp2sh_template</span>() {
1253         <span class="kw">let</span> <span class="ident">prvkey</span> <span class="op">=</span>
1254             <span class="ident">bitcoin</span>::<span class="ident">PrivateKey</span>::<span class="ident">from_wif</span>(<span class="string">&quot;cTc4vURSzdx6QE6KVynWGomDbLaA75dNALMNyfjh3p8DRRar84Um&quot;</span>)
1255                 .<span class="ident">unwrap</span>();
1256         <span class="ident">check</span>(
1257             <span class="ident">P2WPKH_P2SH</span>(<span class="ident">prvkey</span>).<span class="ident">build</span>(),
1258             <span class="bool-val">true</span>,
1259             <span class="bool-val">true</span>,
1260             <span class="kw-2">&amp;</span>[<span class="string">&quot;2NB4ox5VDRw1ecUv6SnT3VQHPXveYztRqk5&quot;</span>],
1261         );
1262
1263         <span class="kw">let</span> <span class="ident">pubkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">PublicKey</span>::<span class="ident">from_str</span>(
1264             <span class="string">&quot;03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd&quot;</span>,
1265         )
1266         .<span class="ident">unwrap</span>();
1267         <span class="ident">check</span>(
1268             <span class="ident">P2WPKH_P2SH</span>(<span class="ident">pubkey</span>).<span class="ident">build</span>(),
1269             <span class="bool-val">true</span>,
1270             <span class="bool-val">true</span>,
1271             <span class="kw-2">&amp;</span>[<span class="string">&quot;2N5LiC3CqzxDamRTPG1kiNv1FpNJQ7x28sb&quot;</span>],
1272         );
1273     }
1274
1275     <span class="comment">// P2WPKH `wpkh(key)`</span>
1276     <span class="attribute">#[<span class="ident">test</span>]</span>
1277     <span class="kw">fn</span> <span class="ident">test_p2wph_template</span>() {
1278         <span class="kw">let</span> <span class="ident">prvkey</span> <span class="op">=</span>
1279             <span class="ident">bitcoin</span>::<span class="ident">PrivateKey</span>::<span class="ident">from_wif</span>(<span class="string">&quot;cTc4vURSzdx6QE6KVynWGomDbLaA75dNALMNyfjh3p8DRRar84Um&quot;</span>)
1280                 .<span class="ident">unwrap</span>();
1281         <span class="ident">check</span>(
1282             <span class="ident">P2WPKH</span>(<span class="ident">prvkey</span>).<span class="ident">build</span>(),
1283             <span class="bool-val">true</span>,
1284             <span class="bool-val">true</span>,
1285             <span class="kw-2">&amp;</span>[<span class="string">&quot;bcrt1q4525hmgw265tl3drrl8jjta7ayffu6jfcwxx9y&quot;</span>],
1286         );
1287
1288         <span class="kw">let</span> <span class="ident">pubkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">PublicKey</span>::<span class="ident">from_str</span>(
1289             <span class="string">&quot;03a34b99f22c790c4e36b2b3c2c35a36db06226e41c692fc82b8b56ac1c540c5bd&quot;</span>,
1290         )
1291         .<span class="ident">unwrap</span>();
1292         <span class="ident">check</span>(
1293             <span class="ident">P2WPKH</span>(<span class="ident">pubkey</span>).<span class="ident">build</span>(),
1294             <span class="bool-val">true</span>,
1295             <span class="bool-val">true</span>,
1296             <span class="kw-2">&amp;</span>[<span class="string">&quot;bcrt1qngw83fg8dz0k749cg7k3emc7v98wy0c7azaa6h&quot;</span>],
1297         );
1298     }
1299
1300     <span class="comment">// BIP44 `pkh(key/44&#39;/0&#39;/0&#39;/{0,1}/*)`</span>
1301     <span class="attribute">#[<span class="ident">test</span>]</span>
1302     <span class="kw">fn</span> <span class="ident">test_bip44_template</span>() {
1303         <span class="kw">let</span> <span class="ident">prvkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">ExtendedPrivKey</span>::<span class="ident">from_str</span>(<span class="string">&quot;tprv8ZgxMBicQKsPcx5nBGsR63Pe8KnRUqmbJNENAfGftF3yuXoMMoVJJcYeUw5eVkm9WBPjWYt6HMWYJNesB5HaNVBaFc1M6dRjWSYnmewUMYy&quot;</span>).<span class="ident">unwrap</span>();
1304         <span class="ident">check</span>(
1305             <span class="ident">BIP44</span>(<span class="ident">prvkey</span>, <span class="ident">KeychainKind</span>::<span class="ident">External</span>).<span class="ident">build</span>(),
1306             <span class="bool-val">false</span>,
1307             <span class="bool-val">false</span>,
1308             <span class="kw-2">&amp;</span>[
1309                 <span class="string">&quot;n453VtnjDHPyDt2fDstKSu7A3YCJoHZ5g5&quot;</span>,
1310                 <span class="string">&quot;mvfrrumXgTtwFPWDNUecBBgzuMXhYM7KRP&quot;</span>,
1311                 <span class="string">&quot;mzYvhRAuQqbdSKMVVzXNYyqihgNdRadAUQ&quot;</span>,
1312             ],
1313         );
1314         <span class="ident">check</span>(
1315             <span class="ident">BIP44</span>(<span class="ident">prvkey</span>, <span class="ident">KeychainKind</span>::<span class="ident">Internal</span>).<span class="ident">build</span>(),
1316             <span class="bool-val">false</span>,
1317             <span class="bool-val">false</span>,
1318             <span class="kw-2">&amp;</span>[
1319                 <span class="string">&quot;muHF98X9KxEzdKrnFAX85KeHv96eXopaip&quot;</span>,
1320                 <span class="string">&quot;n4hpyLJE5ub6B5Bymv4eqFxS5KjrewSmYR&quot;</span>,
1321                 <span class="string">&quot;mgvkdv1ffmsXd2B1sRKQ5dByK3SzpG42rA&quot;</span>,
1322             ],
1323         );
1324     }
1325
1326     <span class="comment">// BIP44 public `pkh(key/{0,1}/*)`</span>
1327     <span class="attribute">#[<span class="ident">test</span>]</span>
1328     <span class="kw">fn</span> <span class="ident">test_bip44_public_template</span>() {
1329         <span class="kw">let</span> <span class="ident">pubkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">ExtendedPubKey</span>::<span class="ident">from_str</span>(<span class="string">&quot;tpubDDDzQ31JkZB7VxUr9bjvBivDdqoFLrDPyLWtLapArAi51ftfmCb2DPxwLQzX65iNcXz1DGaVvyvo6JQ6rTU73r2gqdEo8uov9QKRb7nKCSU&quot;</span>).<span class="ident">unwrap</span>();
1330         <span class="kw">let</span> <span class="ident">fingerprint</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">Fingerprint</span>::<span class="ident">from_str</span>(<span class="string">&quot;c55b303f&quot;</span>).<span class="ident">unwrap</span>();
1331         <span class="ident">check</span>(
1332             <span class="ident">BIP44Public</span>(<span class="ident">pubkey</span>, <span class="ident">fingerprint</span>, <span class="ident">KeychainKind</span>::<span class="ident">External</span>).<span class="ident">build</span>(),
1333             <span class="bool-val">false</span>,
1334             <span class="bool-val">false</span>,
1335             <span class="kw-2">&amp;</span>[
1336                 <span class="string">&quot;miNG7dJTzJqNbFS19svRdTCisC65dsubtR&quot;</span>,
1337                 <span class="string">&quot;n2UqaDbCjWSFJvpC84m3FjUk5UaeibCzYg&quot;</span>,
1338                 <span class="string">&quot;muCPpS6Ue7nkzeJMWDViw7Lkwr92Yc4K8g&quot;</span>,
1339             ],
1340         );
1341         <span class="ident">check</span>(
1342             <span class="ident">BIP44Public</span>(<span class="ident">pubkey</span>, <span class="ident">fingerprint</span>, <span class="ident">KeychainKind</span>::<span class="ident">Internal</span>).<span class="ident">build</span>(),
1343             <span class="bool-val">false</span>,
1344             <span class="bool-val">false</span>,
1345             <span class="kw-2">&amp;</span>[
1346                 <span class="string">&quot;moDr3vJ8wpt5nNxSK55MPq797nXJb2Ru9H&quot;</span>,
1347                 <span class="string">&quot;ms7A1Yt4uTezT2XkefW12AvLoko8WfNJMG&quot;</span>,
1348                 <span class="string">&quot;mhYiyat2rtEnV77cFfQsW32y1m2ceCGHPo&quot;</span>,
1349             ],
1350         );
1351     }
1352
1353     <span class="comment">// BIP49 `sh(wpkh(key/49&#39;/0&#39;/0&#39;/{0,1}/*))`</span>
1354     <span class="attribute">#[<span class="ident">test</span>]</span>
1355     <span class="kw">fn</span> <span class="ident">test_bip49_template</span>() {
1356         <span class="kw">let</span> <span class="ident">prvkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">ExtendedPrivKey</span>::<span class="ident">from_str</span>(<span class="string">&quot;tprv8ZgxMBicQKsPcx5nBGsR63Pe8KnRUqmbJNENAfGftF3yuXoMMoVJJcYeUw5eVkm9WBPjWYt6HMWYJNesB5HaNVBaFc1M6dRjWSYnmewUMYy&quot;</span>).<span class="ident">unwrap</span>();
1357         <span class="ident">check</span>(
1358             <span class="ident">BIP49</span>(<span class="ident">prvkey</span>, <span class="ident">KeychainKind</span>::<span class="ident">External</span>).<span class="ident">build</span>(),
1359             <span class="bool-val">true</span>,
1360             <span class="bool-val">false</span>,
1361             <span class="kw-2">&amp;</span>[
1362                 <span class="string">&quot;2N9bCAJXGm168MjVwpkBdNt6ucka3PKVoUV&quot;</span>,
1363                 <span class="string">&quot;2NDckYkqrYyDMtttEav5hB3Bfw9EGAW5HtS&quot;</span>,
1364                 <span class="string">&quot;2NAFTVtksF9T4a97M7nyCjwUBD24QevZ5Z4&quot;</span>,
1365             ],
1366         );
1367         <span class="ident">check</span>(
1368             <span class="ident">BIP49</span>(<span class="ident">prvkey</span>, <span class="ident">KeychainKind</span>::<span class="ident">Internal</span>).<span class="ident">build</span>(),
1369             <span class="bool-val">true</span>,
1370             <span class="bool-val">false</span>,
1371             <span class="kw-2">&amp;</span>[
1372                 <span class="string">&quot;2NB3pA8PnzJLGV8YEKNDFpbViZv3Bm1K6CG&quot;</span>,
1373                 <span class="string">&quot;2NBiX2Wzxngb5rPiWpUiJQ2uLVB4HBjFD4p&quot;</span>,
1374                 <span class="string">&quot;2NA8ek4CdQ6aMkveYF6AYuEYNrftB47QGTn&quot;</span>,
1375             ],
1376         );
1377     }
1378
1379     <span class="comment">// BIP49 public `sh(wpkh(key/{0,1}/*))`</span>
1380     <span class="attribute">#[<span class="ident">test</span>]</span>
1381     <span class="kw">fn</span> <span class="ident">test_bip49_public_template</span>() {
1382         <span class="kw">let</span> <span class="ident">pubkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">ExtendedPubKey</span>::<span class="ident">from_str</span>(<span class="string">&quot;tpubDC49r947KGK52X5rBWS4BLs5m9SRY3pYHnvRrm7HcybZ3BfdEsGFyzCMzayi1u58eT82ZeyFZwH7DD6Q83E3fM9CpfMtmnTygnLfP59jL9L&quot;</span>).<span class="ident">unwrap</span>();
1383         <span class="kw">let</span> <span class="ident">fingerprint</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">Fingerprint</span>::<span class="ident">from_str</span>(<span class="string">&quot;c55b303f&quot;</span>).<span class="ident">unwrap</span>();
1384         <span class="ident">check</span>(
1385             <span class="ident">BIP49Public</span>(<span class="ident">pubkey</span>, <span class="ident">fingerprint</span>, <span class="ident">KeychainKind</span>::<span class="ident">External</span>).<span class="ident">build</span>(),
1386             <span class="bool-val">true</span>,
1387             <span class="bool-val">false</span>,
1388             <span class="kw-2">&amp;</span>[
1389                 <span class="string">&quot;2N3K4xbVAHoiTQSwxkZjWDfKoNC27pLkYnt&quot;</span>,
1390                 <span class="string">&quot;2NCTQfJ1sZa3wQ3pPseYRHbaNEpC3AquEfX&quot;</span>,
1391                 <span class="string">&quot;2MveFxAuC8BYPzTybx7FxSzW8HSd8ATT4z7&quot;</span>,
1392             ],
1393         );
1394         <span class="ident">check</span>(
1395             <span class="ident">BIP49Public</span>(<span class="ident">pubkey</span>, <span class="ident">fingerprint</span>, <span class="ident">KeychainKind</span>::<span class="ident">Internal</span>).<span class="ident">build</span>(),
1396             <span class="bool-val">true</span>,
1397             <span class="bool-val">false</span>,
1398             <span class="kw-2">&amp;</span>[
1399                 <span class="string">&quot;2NF2vttKibwyxigxtx95Zw8K7JhDbo5zPVJ&quot;</span>,
1400                 <span class="string">&quot;2Mtmyd8taksxNVWCJ4wVvaiss7QPZGcAJuH&quot;</span>,
1401                 <span class="string">&quot;2NBs3CTVYPr1HCzjB4YFsnWCPCtNg8uMEfp&quot;</span>,
1402             ],
1403         );
1404     }
1405
1406     <span class="comment">// BIP84 `wpkh(key/84&#39;/0&#39;/0&#39;/{0,1}/*)`</span>
1407     <span class="attribute">#[<span class="ident">test</span>]</span>
1408     <span class="kw">fn</span> <span class="ident">test_bip84_template</span>() {
1409         <span class="kw">let</span> <span class="ident">prvkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">ExtendedPrivKey</span>::<span class="ident">from_str</span>(<span class="string">&quot;tprv8ZgxMBicQKsPcx5nBGsR63Pe8KnRUqmbJNENAfGftF3yuXoMMoVJJcYeUw5eVkm9WBPjWYt6HMWYJNesB5HaNVBaFc1M6dRjWSYnmewUMYy&quot;</span>).<span class="ident">unwrap</span>();
1410         <span class="ident">check</span>(
1411             <span class="ident">BIP84</span>(<span class="ident">prvkey</span>, <span class="ident">KeychainKind</span>::<span class="ident">External</span>).<span class="ident">build</span>(),
1412             <span class="bool-val">true</span>,
1413             <span class="bool-val">false</span>,
1414             <span class="kw-2">&amp;</span>[
1415                 <span class="string">&quot;bcrt1qkmvk2nadgplmd57ztld8nf8v2yxkzmdvwtjf8s&quot;</span>,
1416                 <span class="string">&quot;bcrt1qx0v6zgfwe50m4kqc58cqzcyem7ay2sfl3gvqhp&quot;</span>,
1417                 <span class="string">&quot;bcrt1q4h7fq9zhxst6e69p3n882nfj649l7w9g3zccfp&quot;</span>,
1418             ],
1419         );
1420         <span class="ident">check</span>(
1421             <span class="ident">BIP84</span>(<span class="ident">prvkey</span>, <span class="ident">KeychainKind</span>::<span class="ident">Internal</span>).<span class="ident">build</span>(),
1422             <span class="bool-val">true</span>,
1423             <span class="bool-val">false</span>,
1424             <span class="kw-2">&amp;</span>[
1425                 <span class="string">&quot;bcrt1qtrwtz00wxl69e5xex7amy4xzlxkaefg3gfdkxa&quot;</span>,
1426                 <span class="string">&quot;bcrt1qqqasfhxpkkf7zrxqnkr2sfhn74dgsrc3e3ky45&quot;</span>,
1427                 <span class="string">&quot;bcrt1qpks7n0gq74hsgsz3phn5vuazjjq0f5eqhsgyce&quot;</span>,
1428             ],
1429         );
1430     }
1431
1432     <span class="comment">// BIP84 public `wpkh(key/{0,1}/*)`</span>
1433     <span class="attribute">#[<span class="ident">test</span>]</span>
1434     <span class="kw">fn</span> <span class="ident">test_bip84_public_template</span>() {
1435         <span class="kw">let</span> <span class="ident">pubkey</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">ExtendedPubKey</span>::<span class="ident">from_str</span>(<span class="string">&quot;tpubDC2Qwo2TFsaNC4ju8nrUJ9mqVT3eSgdmy1yPqhgkjwmke3PRXutNGRYAUo6RCHTcVQaDR3ohNU9we59brGHuEKPvH1ags2nevW5opEE9Z5Q&quot;</span>).<span class="ident">unwrap</span>();
1436         <span class="kw">let</span> <span class="ident">fingerprint</span> <span class="op">=</span> <span class="ident">bitcoin</span>::<span class="ident">util</span>::<span class="ident">bip32</span>::<span class="ident">Fingerprint</span>::<span class="ident">from_str</span>(<span class="string">&quot;c55b303f&quot;</span>).<span class="ident">unwrap</span>();
1437         <span class="ident">check</span>(
1438             <span class="ident">BIP84Public</span>(<span class="ident">pubkey</span>, <span class="ident">fingerprint</span>, <span class="ident">KeychainKind</span>::<span class="ident">External</span>).<span class="ident">build</span>(),
1439             <span class="bool-val">true</span>,
1440             <span class="bool-val">false</span>,
1441             <span class="kw-2">&amp;</span>[
1442                 <span class="string">&quot;bcrt1qedg9fdlf8cnnqfd5mks6uz5w4kgpk2prcdvd0h&quot;</span>,
1443                 <span class="string">&quot;bcrt1q3lncdlwq3lgcaaeyruynjnlccr0ve0kakh6ana&quot;</span>,
1444                 <span class="string">&quot;bcrt1qt9800y6xl3922jy3uyl0z33jh5wfpycyhcylr9&quot;</span>,
1445             ],
1446         );
1447         <span class="ident">check</span>(
1448             <span class="ident">BIP84Public</span>(<span class="ident">pubkey</span>, <span class="ident">fingerprint</span>, <span class="ident">KeychainKind</span>::<span class="ident">Internal</span>).<span class="ident">build</span>(),
1449             <span class="bool-val">true</span>,
1450             <span class="bool-val">false</span>,
1451             <span class="kw-2">&amp;</span>[
1452                 <span class="string">&quot;bcrt1qm6wqukenh7guu792lj2njgw9n78cmwsy8xy3z2&quot;</span>,
1453                 <span class="string">&quot;bcrt1q694twxtjn4nnrvnyvra769j0a23rllj5c6cgwp&quot;</span>,
1454                 <span class="string">&quot;bcrt1qhlac3c5ranv5w5emlnqs7wxhkxt8maelylcarp&quot;</span>,
1455             ],
1456         );
1457     }
1458 }
1459 </pre></div>
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