docs: update erc4361 docs

Author: Z4karia

README.md

@@ -57,66 +57,72 @@ For a smooth and quick integration:
         *   [Parameters](#parameters-9)
     *   [signWithdrawal](#signwithdrawal)
         *   [Parameters](#parameters-10)
+        *   [Examples](#examples-7)
+    *   [signERC4361Message](#signerc4361message)
+        *   [Parameters](#parameters-11)
+        *   [Examples](#examples-8)
 *   [AcreBtcNew](#acrebtcnew)
     *   [getWalletXpub](#getwalletxpub-1)
-        *   [Parameters](#parameters-11)
-    *   [getWalletPublicKey](#getwalletpublickey-1)
         *   [Parameters](#parameters-12)
-    *   [createPaymentTransaction](#createpaymenttransaction-1)
+    *   [getWalletPublicKey](#getwalletpublickey-1)
         *   [Parameters](#parameters-13)
-    *   [signMessage](#signmessage-1)
+    *   [createPaymentTransaction](#createpaymenttransaction-1)
         *   [Parameters](#parameters-14)
-    *   [signWithdrawal](#signwithdrawal-1)
+    *   [signMessage](#signmessage-1)
         *   [Parameters](#parameters-15)
+    *   [signWithdrawal](#signwithdrawal-1)
+        *   [Parameters](#parameters-16)
+    *   [signERC4361Message](#signerc4361message-1)
+        *   [Parameters](#parameters-17)
 *   [descrTemplFrom](#descrtemplfrom)
-    *   [Parameters](#parameters-16)
+    *   [Parameters](#parameters-18)
 *   [AcreBtcOld](#acrebtcold)
     *   [getWalletPublicKey](#getwalletpublickey-2)
-        *   [Parameters](#parameters-17)
-        *   [Examples](#examples-7)
+        *   [Parameters](#parameters-19)
+        *   [Examples](#examples-9)
     *   [createPaymentTransaction](#createpaymenttransaction-2)
-        *   [Parameters](#parameters-18)
-        *   [Examples](#examples-8)
+        *   [Parameters](#parameters-20)
+        *   [Examples](#examples-10)
 *   [CreateTransactionArg](#createtransactionarg)
     *   [Properties](#properties)
 *   [AddressFormat](#addressformat)
 *   [AcreWithdrawalData](#acrewithdrawaldata)
     *   [Properties](#properties-1)
 *   [AccountType](#accounttype)
     *   [spendingCondition](#spendingcondition)
-        *   [Parameters](#parameters-19)
+        *   [Parameters](#parameters-21)
     *   [setInput](#setinput)
-        *   [Parameters](#parameters-20)
+        *   [Parameters](#parameters-22)
     *   [setOwnOutput](#setownoutput)
-        *   [Parameters](#parameters-21)
+        *   [Parameters](#parameters-23)
     *   [getDescriptorTemplate](#getdescriptortemplate)
 *   [SingleKeyAccount](#singlekeyaccount)
 *   [getTaprootOutputKey](#gettaprootoutputkey)
-    *   [Parameters](#parameters-22)
+    *   [Parameters](#parameters-24)
 *   [AppClient](#appclient)
-    *   [Parameters](#parameters-23)
+    *   [Parameters](#parameters-25)
 *   [ClientCommandInterpreter](#clientcommandinterpreter)
-    *   [Parameters](#parameters-24)
+    *   [Parameters](#parameters-26)
 *   [MerkelizedPsbt](#merkelizedpsbt)
-    *   [Parameters](#parameters-25)
+    *   [Parameters](#parameters-27)
 *   [Merkle](#merkle)
-    *   [Parameters](#parameters-26)
+    *   [Parameters](#parameters-28)
 *   [MerkleMap](#merklemap)
-    *   [Parameters](#parameters-27)
+    *   [Parameters](#parameters-29)
 *   [WalletPolicy](#walletpolicy)
-    *   [Parameters](#parameters-28)
+    *   [Parameters](#parameters-30)
 *   [extract](#extract)
-    *   [Parameters](#parameters-29)
+    *   [Parameters](#parameters-31)
 *   [finalize](#finalize)
-    *   [Parameters](#parameters-30)
+    *   [Parameters](#parameters-32)
 *   [clearFinalizedInput](#clearfinalizedinput)
-    *   [Parameters](#parameters-31)
+    *   [Parameters](#parameters-33)
 *   [writePush](#writepush)
-    *   [Parameters](#parameters-32)
+    *   [Parameters](#parameters-34)
 *   [PsbtV2](#psbtv2)
 *   [serializeTransactionOutputs](#serializetransactionoutputs-1)
-    *   [Parameters](#parameters-33)
-    *   [Examples](#examples-9)
+    *   [Parameters](#parameters-35)
+    *   [Examples](#examples-11)
 *   [SignP2SHTransactionArg](#signp2shtransactionarg)
     *   [Properties](#properties-2)
 *   [TransactionInput](#transactioninput)
@@ -353,8 +359,6 @@ and returns v, r, s.
     *   `$0.path`  
     *   `$0.withdrawalData`  
 
-Returns **[Promise](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)<{v: [number](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number), r: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String), s: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)}>**&#x20;
-
 ##### Examples
 
 ```javascript
@@ -377,6 +381,31 @@ Returns **[Promise](https://developer.mozilla.org/docs/Web/JavaScript/Reference/
         }).catch(function(ex) {console.log(ex);});
 ```
 
+#### signERC4361Message
+
+Signs an Ethereum Sign-In (ERC-4361) message with the private key at
+the provided derivation path according to the Bitcoin Signature format
+and returns v, r, s.
+
+##### Parameters
+
+*   `path` **[string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)**&#x20;
+*   `messageHex` **[string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)**&#x20;
+
+##### Examples
+
+```javascript
+acre.signERC4361Message("44'/60'/0'/0'/0", Buffer.from("Example ERC-4361 message").toString("hex")).then(function(result) {
+  const v = result['v'] + 27 + 4;
+  const signature = Buffer.from(v.toString(16) + result['r'] + result['s'], 'hex').toString('base64');
+  console.log("Signature : " + signature);
+}).catch(function(ex) {console.log(ex);});
+```
+
+Returns **[Promise](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)<{v: [number](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number), r: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String), s: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)}>**&#x20;
+
+**Note:** The message is restricted to maximum 128 character lines.
+
 Returns **[Promise](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)<{v: [number](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number), r: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String), s: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)}>**&#x20;
 
 
@@ -492,27 +521,28 @@ and returns v, r, s.
 
 Returns **[Promise](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)<{v: [number](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number), r: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String), s: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)}>**&#x20;
 
-### descrTemplFrom
+#### signERC4361Message
 
-This function returns a descriptor template based on the address format.
-See <https://github.com/blooo-io/app-acre/blob/develop/doc/wallet.md> for details of
-the bitcoin descriptor template.
+Signs an ERC-4361 (Sign-In with Ethereum) formatted message with the private key at
+the provided derivation path according to the Bitcoin Signature format
+and returns v, r, s.
 
-#### Parameters
+##### Parameters
 
-*   `addressFormat` **[AddressFormat](#addressformat)**&#x20;
+*   `$0` **{path: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String), messageHex: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)}**
 
-Returns **DefaultDescriptorTemplate**&#x20;
+    *   `$0.path` The BIP32 derivation path of the key to use for signing
+    *   `$0.messageHex` The ERC-4361 formatted message to sign, in hexadecimal format
 
-### AcreBtcOld
+Returns **[Promise](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Promise)<{v: [number](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Number), r: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String), s: [string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)}>**&#x20;
 
-This old API is compatible with versions of the Bitcoin nano app that are earlier than 2.1.0 .
-It is never used by Acre, that is based on the latest Bitcoin nano app (2.1.0+).
-This class is kept for compatibility purposes.
+### descrTemplFrom
 
-#### getWalletPublicKey
+This function returns a descriptor template based on the address format.
+See <https://github.com/blooo-io/app-acre/blob/develop/doc/wallet.md> for details of
+the bitcoin descriptor template.
 
-##### Parameters
+#### Parameters
 
 *   `path` **[string](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/String)** a BIP 32 path
 *   `opts` **{verify: [boolean](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Boolean)?, format: [AddressFormat](#addressformat)?}?**&#x20;