rm bip70 support

diff --git a/contrib/build-linux/sdist/README.md b/contrib/build-linux/sdist/README.md
index 1457b6a..96c203c 100644
--- a/contrib/build-linux/sdist/README.md
+++ b/contrib/build-linux/sdist/README.md
@@ -53,5 +53,3 @@ The differences are as follows:
 - the normal tarball includes compiled (.mo) locale files, the source-only tarball does not.
   Both tarballs contain (.po) source locale files. If you are packaging for a Linux distro,
   you probably want to compile the .mo locale files yourself (see `contrib/locale/build_locale.sh`).
-- the normal tarball includes generated `*_pb2.py` files. These are created
-  using `protobuf-compiler` from `.proto` files (see `contrib/generate_payreqpb2.sh`)
diff --git a/contrib/build-linux/sdist/make_sdist.sh b/contrib/build-linux/sdist/make_sdist.sh
index ecdf5b8..6404070 100755
--- a/contrib/build-linux/sdist/make_sdist.sh
+++ b/contrib/build-linux/sdist/make_sdist.sh
@@ -35,11 +35,6 @@ info "preparing electrum-locale."
     fi
 )
 
-if ([ "$OMIT_UNCLEAN_FILES" = 1 ]); then
-    # FIXME side-effecting repo... though in practice, this script probably runs in fresh_clone
-    rm -f "$PROJECT_ROOT/electrum/paymentrequest_pb2.py"
-fi
-
 (
     cd "$PROJECT_ROOT"
 
diff --git a/contrib/generate_payreqpb2.sh b/contrib/generate_payreqpb2.sh
deleted file mode 100755
index 959b24c..0000000
--- a/contrib/generate_payreqpb2.sh
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/bash
-# Generates the file paymentrequest_pb2.py
-
-set -e
-
-CONTRIB="$(dirname "$(readlink -e "$0")")"
-EL="$CONTRIB"/../electrum
-
-if ! which protoc > /dev/null 2>&1; then
-    echo "Please install 'protoc'"
-    echo "If you're on Debian, try 'sudo apt install protobuf-compiler'?"
-    exit 1
-fi
-
-protoc --proto_path="$EL" --python_out="$EL" "$EL"/paymentrequest.proto
diff --git a/electrum/commands.py b/electrum/commands.py
index dca66ed..701332d 100644
--- a/electrum/commands.py
+++ b/electrum/commands.py
@@ -2452,7 +2452,7 @@ def get_parser():
     subparsers = parser.add_subparsers(dest='cmd', metavar='<command>')
     # gui
     parser_gui = subparsers.add_parser('gui', description="Run Electrum's Graphical User Interface.", help="Run GUI (default)")
-    parser_gui.add_argument("url", nargs='?', default=None, help="bitcoin URI (or bip70 file)")
+    parser_gui.add_argument("url", nargs='?', default=None, help="bitcoin URI")
     parser_gui.add_argument("-g", "--gui", dest=SimpleConfig.GUI_NAME.key(), help="select graphical user interface", choices=['qt', 'text', 'stdio', 'qml'])
     parser_gui.add_argument("-m", action="store_true", dest=SimpleConfig.GUI_QT_HIDE_ON_STARTUP.key(), default=False, help="hide GUI on startup")
     parser_gui.add_argument("-L", "--lang", dest=SimpleConfig.LOCALIZATION_LANGUAGE.key(), default=None, help="default language used in GUI")
diff --git a/electrum/gui/qml/qeinvoice.py b/electrum/gui/qml/qeinvoice.py
index 18f5f14..395f4c7 100644
--- a/electrum/gui/qml/qeinvoice.py
+++ b/electrum/gui/qml/qeinvoice.py
@@ -16,7 +16,6 @@ from electrum.transaction import PartialTxOutput, TxOutput
 from electrum.lnutil import format_short_channel_id
 from electrum.lnurl import LNURL6Data
 from electrum.bitcoin import COIN, address_to_script
-from electrum.paymentrequest import PaymentRequest
 from electrum.payment_identifier import PaymentIdentifier, PaymentIdentifierState, PaymentIdentifierType
 from electrum.network import Network
 from electrum.util import event_listener
@@ -500,27 +499,12 @@ class QEInvoiceParser(QEInvoice):
         self._effectiveInvoice = None
         self.invoiceChanged.emit()
 
-    def create_onchain_invoice(self, outputs, message, payment_request, uri):
+    def create_onchain_invoice(self, *, outputs, message, uri):
         return self._wallet.wallet.create_invoice(
             outputs=outputs,
             message=message,
-            pr=payment_request,
-            URI=uri
-            )
-
-    def _bip70_payment_request_resolved(self, pr: 'PaymentRequest'):
-        self._logger.debug('resolved payment request')
-        if Network.run_from_another_thread(pr.verify()):
-            invoice = Invoice.from_bip70_payreq(pr, height=0)
-            if self._wallet.wallet.get_invoice_status(invoice) == PR_PAID:
-                self.validationError.emit('unknown', _('Invoice already paid'))
-            elif pr.has_expired():
-                self.validationError.emit('unknown', _('Payment request has expired'))
-            else:
-                self.setValidOnchainInvoice(invoice)
-                self.validationSuccess.emit()
-        else:
-            self.validationError.emit('unknown', f'invoice error:\n{pr.error}')
+            URI=uri,
+        )
 
     def validateRecipient(self, pi: PaymentIdentifier):
         if not pi:
@@ -530,7 +514,7 @@ class QEInvoiceParser(QEInvoice):
         self._pi = pi
         if not self._pi.is_valid() or self._pi.type not in [
             PaymentIdentifierType.SPK, PaymentIdentifierType.BIP21,
-            PaymentIdentifierType.BIP70, PaymentIdentifierType.BOLT11,
+            PaymentIdentifierType.BOLT11,
             PaymentIdentifierType.LNADDR, PaymentIdentifierType.LNURLP,
             PaymentIdentifierType.EMAILLIKE, PaymentIdentifierType.DOMAINLIKE,
             PaymentIdentifierType.OPENALIAS,
@@ -556,14 +540,10 @@ class QEInvoiceParser(QEInvoice):
             self.on_lnurl_pay(self._pi.lnurl_data)
             return
 
-        if self._pi.type == PaymentIdentifierType.BIP70:
-            self._bip70_payment_request_resolved(self._pi.bip70_data)
-            return
-
         if self._pi.is_available():
             if self._pi.type in [PaymentIdentifierType.SPK, PaymentIdentifierType.OPENALIAS]:
                 outputs = [PartialTxOutput(scriptpubkey=self._pi.spk, value=0)]
-                invoice = self.create_onchain_invoice(outputs, None, None, None)
+                invoice = self.create_onchain_invoice(outputs=outputs, message=None, uri=None)
                 self._logger.debug(repr(invoice))
                 self.setValidOnchainInvoice(invoice)
                 self.validationSuccess.emit()
@@ -597,7 +577,7 @@ class QEInvoiceParser(QEInvoice):
         outputs = [PartialTxOutput.from_address_and_value(bip21['address'], amount)]
         self._logger.debug(outputs)
         message = bip21.get('message', '')
-        invoice = self.create_onchain_invoice(outputs, message, None, bip21)
+        invoice = self.create_onchain_invoice(outputs=outputs, message=message, uri=bip21)
         self._logger.debug(repr(invoice))
         self.setValidOnchainInvoice(invoice)
         self.validationSuccess.emit()
diff --git a/electrum/gui/qml/qepiresolver.py b/electrum/gui/qml/qepiresolver.py
index ae3d9e7..e171f80 100644
--- a/electrum/gui/qml/qepiresolver.py
+++ b/electrum/gui/qml/qepiresolver.py
@@ -76,8 +76,6 @@ class QEPIResolver(QObject):
                     msg = _('Could not resolve address')
                 elif pi.type == PaymentIdentifierType.LNURL:
                     msg = _('Could not resolve LNURL') + "\n\n" + pi.get_error()
-                elif pi.type == PaymentIdentifierType.BIP70:
-                    msg = _('Could not resolve BIP70 payment request: {}').format(pi.error)
                 else:
                     msg = _('Could not resolve')
                 self.resolveError.emit('resolve', msg)
diff --git a/electrum/gui/qt/invoice_list.py b/electrum/gui/qt/invoice_list.py
index 2883d43..dd8bfb3 100644
--- a/electrum/gui/qt/invoice_list.py
+++ b/electrum/gui/qt/invoice_list.py
@@ -114,8 +114,6 @@ class InvoiceList(MyTreeView):
                 icon_name = 'lightning.png'
             else:
                 icon_name = 'bitcoin.png'
-                if item.bip70:
-                    icon_name = 'seal.png'
             status = self.wallet.get_invoice_status(item)
             amount = item.get_amount_sat()
             amount_str = self.main_window.format_amount(amount, whitespaces=True) if amount else ""
diff --git a/electrum/gui/qt/main_window.py b/electrum/gui/qt/main_window.py
index 993a216..d83ac47 100644
--- a/electrum/gui/qt/main_window.py
+++ b/electrum/gui/qt/main_window.py
@@ -50,7 +50,7 @@ import electrum_ecc as ecc
 import electrum
 from electrum.gui import messages
 from electrum import (keystore, constants, util, bitcoin, commands,
-                      paymentrequest, lnutil)
+                      lnutil)
 from electrum.bitcoin import COIN, is_address, DummyAddress
 from electrum.plugin import run_hook
 from electrum.i18n import _
@@ -1667,32 +1667,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger, QtEventListener):
         if invoice.exp:
             grid.addWidget(QLabel(_("Expires") + ':'), 4, 0)
             grid.addWidget(QLabel(format_time(invoice.exp + invoice.time)), 4, 1)
-        if invoice.bip70:
-            pr = paymentrequest.PaymentRequest(bytes.fromhex(invoice.bip70))
-            Network.run_from_another_thread(pr.verify())
-            grid.addWidget(QLabel(_("Requestor") + ':'), 5, 0)
-            grid.addWidget(QLabel(pr.get_requestor()), 5, 1)
-            grid.addWidget(QLabel(_("Signature") + ':'), 6, 0)
-            grid.addWidget(QLabel(pr.get_verify_status()), 6, 1)
-            def do_export():
-                name = pr.get_name_for_export() or "payment_request"
-                name = f"{name}.bip70"
-                fn = getSaveFileName(
-                    parent=self,
-                    title=_("Save invoice to file"),
-                    filename=name,
-                    filter="*.bip70",
-                    config=self.config,
-                )
-                if not fn:
-                    return
-                with open(fn, 'wb') as f:
-                    data = f.write(pr.raw)
-                self.show_message(_('BIP70 invoice saved as {}').format(fn))
-            exportButton = EnterButton(_('Export'), do_export)
-            buttons = Buttons(exportButton, CloseButton(d))
-        else:
-            buttons = Buttons(CloseButton(d))
+        buttons = Buttons(CloseButton(d))
         vbox.addLayout(grid)
         vbox.addLayout(buttons)
         d.exec()
diff --git a/electrum/gui/qt/send_tab.py b/electrum/gui/qt/send_tab.py
index fc02d07..10d2c3d 100644
--- a/electrum/gui/qt/send_tab.py
+++ b/electrum/gui/qt/send_tab.py
@@ -24,7 +24,7 @@ from electrum.transaction import Transaction, PartialTxInput, PartialTxOutput
 from electrum.network import TxBroadcastError, BestEffortRequestFailed
 from electrum.payment_identifier import (PaymentIdentifierType, PaymentIdentifier,
                                          invoice_from_payment_identifier,
-                                         payment_identifier_from_invoice, PaymentIdentifierState)
+                                         PaymentIdentifierState)
 from electrum.submarine_swaps import SwapServerError
 from electrum.fee_policy import FeePolicy, FixedFeePolicy
 from electrum.lnurl import LNURL3Data, request_lnurl_withdraw_callback, LNURLError
@@ -44,7 +44,6 @@ class SendTab(QWidget, MessageBoxMixin, Logger):
 
     resolve_done_signal = pyqtSignal(object)
     finalize_done_signal = pyqtSignal(object)
-    notify_merchant_done_signal = pyqtSignal(object)
 
     def __init__(self, window: 'ElectrumWindow'):
         QWidget.__init__(self, window)
@@ -210,7 +209,6 @@ class SendTab(QWidget, MessageBoxMixin, Logger):
 
         self.resolve_done_signal.connect(self.on_resolve_done)
         self.finalize_done_signal.connect(self.on_finalize_done)
-        self.notify_merchant_done_signal.connect(self.on_notify_merchant_done)
         self.payto_e.paymentIdentifierChanged.connect(self._handle_payment_identifier)
 
         self.setTabOrder(self.send_button, self.invoice_list)
@@ -392,10 +390,6 @@ class SendTab(QWidget, MessageBoxMixin, Logger):
             btn.setEnabled(False)
         self.spinner.setVisible(True)
 
-    def payment_request_error(self, error):
-        self.show_message(error)
-        self.do_clear()
-
     def set_field_validated(self, w, *, validated: Optional[bool] = None):
         if validated is not None:
             w.setStyleSheet(ColorScheme.GREEN.as_stylesheet(True) if validated else ColorScheme.RED.as_stylesheet(True))
@@ -443,7 +437,7 @@ class SendTab(QWidget, MessageBoxMixin, Logger):
 
         lock_recipient = pi.type in [PaymentIdentifierType.LNURL, PaymentIdentifierType.LNURLW,
                                      PaymentIdentifierType.LNURLP, PaymentIdentifierType.LNADDR,
-                                     PaymentIdentifierType.OPENALIAS, PaymentIdentifierType.BIP70,
+                                     PaymentIdentifierType.OPENALIAS,
                                      PaymentIdentifierType.BIP21, PaymentIdentifierType.BOLT11] and not pi.need_resolve()
         lock_amount = pi.is_amount_locked()
         lock_max = lock_amount or pi.type not in [PaymentIdentifierType.SPK, PaymentIdentifierType.BIP21]
@@ -542,7 +536,7 @@ class SendTab(QWidget, MessageBoxMixin, Logger):
         if not self.wallet.has_lightning() and not invoice.can_be_paid_onchain():
             self.show_error(_('Lightning is disabled'))
         if self.wallet.get_invoice_status(invoice) == PR_PAID:
-            # fixme: this is only for bip70 and lightning
+            # fixme: this is only for lightning
             self.show_error(_('Invoice already paid'))
             return
         #if not invoice.is_lightning():
@@ -766,16 +760,6 @@ class SendTab(QWidget, MessageBoxMixin, Logger):
             except BestEffortRequestFailed as e:
                 return False, repr(e)
             # success
-            if invoice and invoice.bip70:
-                payment_identifier = payment_identifier_from_invoice(invoice)
-                # FIXME: this should move to backend
-                if payment_identifier and payment_identifier.need_merchant_notify():
-                    refund_address = self.wallet.get_receiving_address()
-                    payment_identifier.notify_merchant(
-                        tx=tx,
-                        refund_address=refund_address,
-                        on_finished=self.notify_merchant_done_signal.emit
-                    )
             return True, tx.txid()
 
         # Capture current TL window; override might be removed on return
@@ -800,14 +784,6 @@ class SendTab(QWidget, MessageBoxMixin, Logger):
         WaitingDialog(self, _('Broadcasting transaction...'),
                       broadcast_thread, broadcast_done, self.window.on_error)
 
-    def on_notify_merchant_done(self, pi: PaymentIdentifier):
-        if pi.is_error():
-            self.logger.debug(f'merchant notify error: {pi.get_error()}')
-        else:
-            self.logger.debug(f'merchant notify result: {pi.merchant_ack_status}: {pi.merchant_ack_message}')
-        # TODO: show user? if we broadcasted the tx successfully, do we care?
-        # BitPay complains with a NAK if tx is RbF
-
     def toggle_paytomany(self):
         self.payto_e.toggle_paytomany()
         if self.payto_e.is_paytomany():
diff --git a/electrum/gui/text.py b/electrum/gui/text.py
index 32da41c..09fc64c 100644
--- a/electrum/gui/text.py
+++ b/electrum/gui/text.py
@@ -638,8 +638,8 @@ class ElectrumGui(BaseElectrumGui, EventListener):
             invoice = self.wallet.create_invoice(
                 outputs=outputs,
                 message=self.str_description,
-                pr=None,
-                URI=None)
+                URI=None,
+            )
         else:
             self.show_message(_('Invalid Bitcoin address'))
             return None
diff --git a/electrum/invoices.py b/electrum/invoices.py
index eb55dfe..8f20166 100644
--- a/electrum/invoices.py
+++ b/electrum/invoices.py
@@ -16,8 +16,6 @@ from .bitcoin import address_to_script
 from .transaction import PartialTxOutput
 from .crypto import sha256d
 
-if TYPE_CHECKING:
-    from .paymentrequest import PaymentRequest
 
 # convention: 'invoices' = outgoing , 'request' = incoming
 
@@ -114,14 +112,15 @@ class BaseInvoice(StoredObject):
 
     # optional fields.
     # an request (incoming) can be satisfied onchain, using lightning or using a swap
-    # an invoice (outgoing) is constructed from a source: bip21, bip70, lnaddr
+    # an invoice (outgoing) is constructed from a source: bip21, lnaddr
 
     # onchain only
     outputs = attr.ib(kw_only=True, converter=_decode_outputs)  # type: Optional[List[PartialTxOutput]]
     height = attr.ib(  # only for receiving
         type=int, kw_only=True, validator=attr.validators.instance_of(int), on_setattr=attr.setters.validate)
-    bip70 = attr.ib(type=str, kw_only=True)  # type: Optional[str]
-    #bip70_requestor = attr.ib(type=str, kw_only=True)  # type: Optional[str]
+
+    # (unused) historical bip70 invoice data, for BIP70 invoices paid in the past
+    bip70 = attr.ib(type=str, kw_only=True, default=None)  # type: Optional[str]
 
     def is_lightning(self) -> bool:
         raise NotImplementedError()
@@ -227,24 +226,10 @@ class BaseInvoice(StoredObject):
             time=timestamp,
             exp=exp_delay,
             outputs=None,
-            bip70=None,
             height=0,
             lightning_invoice=invoice,
         )
 
-    @classmethod
-    def from_bip70_payreq(cls, pr: 'PaymentRequest', *, height: int = 0) -> 'Invoice':
-        return Invoice(
-            amount_msat=pr.get_amount()*1000,
-            message=pr.get_memo(),
-            time=pr.get_time(),
-            exp=pr.get_expiration_date() - pr.get_time(),
-            outputs=pr.get_outputs(),
-            bip70=pr.raw.hex(),
-            height=height,
-            lightning_invoice=None,
-        )
-
     def get_id(self) -> str:
         if self.is_lightning():
             return self.rhash
diff --git a/electrum/payment_identifier.py b/electrum/payment_identifier.py
index 130907a..5883aad 100644
--- a/electrum/payment_identifier.py
+++ b/electrum/payment_identifier.py
@@ -22,7 +22,6 @@ from .lnaddr import LnInvoiceException
 from .lnutil import IncompatibleOrInsaneFeatures
 from .bip21 import parse_bip21_URI, InvalidBitcoinURI, LIGHTNING_URI_SCHEME, BITCOIN_BIP21_URI_SCHEME
 from .segwit_addr import bech32_decode
-from . import paymentrequest
 
 if TYPE_CHECKING:
     from .wallet import Abstract_Wallet
@@ -61,10 +60,6 @@ class PaymentIdentifierState(IntEnum):
     NEED_RESOLVE = 3        # PI contains a recognized destination format, but needs an online resolve step
     LNURLP_FINALIZE = 4     # PI contains a resolved LNURLp, but needs amount and comment to resolve to a bolt11
     LNURLW_FINALIZE = 5     # PI contains resolved LNURLw, user needs to enter amount and initiate withdraw
-    MERCHANT_NOTIFY = 6     # PI contains a valid payment request and on-chain destination. It should notify
-                            # the merchant payment processor of the tx after on-chain broadcast,
-                            # and supply a refund address (bip70)
-    MERCHANT_ACK = 7        # PI notified merchant. nothing to be done.
     ERROR = 50              # generic error
     NOT_FOUND = 51          # PI contains a recognized destination format, but resolve step was unsuccessful
     MERCHANT_ERROR = 52     # PI failed notifying the merchant after broadcasting onchain TX
@@ -75,7 +70,6 @@ class PaymentIdentifierType(IntEnum):
     UNKNOWN = 0
     SPK = 1
     BIP21 = 2
-    BIP70 = 3
     MULTILINE = 4
     BOLT11 = 5
     LNURL = 6  # before the resolve it's unknown if pi is LNURLP or LNURLW
@@ -131,11 +125,6 @@ class PaymentIdentifier(Logger):
         self.domainlike = None
         self.openalias_data = None
         #
-        self.bip70 = None
-        self.bip70_data = None
-        self.merchant_ack_status = None
-        self.merchant_ack_message = None
-        #
         self.lnurl = None  # type: Optional[str]
         self.lnurl_data = None # type: Optional[LNURLData]
 
@@ -159,9 +148,6 @@ class PaymentIdentifier(Logger):
     def need_finalize(self):
         return self._state == PaymentIdentifierState.LNURLP_FINALIZE
 
-    def need_merchant_notify(self):
-        return self._state == PaymentIdentifierState.MERCHANT_NOTIFY
-
     def is_valid(self):
         return self._state not in [PaymentIdentifierState.INVALID, PaymentIdentifierState.EMPTY]
 
@@ -172,7 +158,7 @@ class PaymentIdentifier(Logger):
         return bool(self.lnurl) or bool(self.bolt11)
 
     def is_onchain(self):
-        if self._type in [PaymentIdentifierType.SPK, PaymentIdentifierType.MULTILINE, PaymentIdentifierType.BIP70,
+        if self._type in [PaymentIdentifierType.SPK, PaymentIdentifierType.MULTILINE,
                           PaymentIdentifierType.OPENALIAS]:
             return True
         if self._type in [PaymentIdentifierType.LNURLP, PaymentIdentifierType.BOLT11, PaymentIdentifierType.LNADDR]:
@@ -189,8 +175,6 @@ class PaymentIdentifier(Logger):
     def is_amount_locked(self):
         if self._type == PaymentIdentifierType.BIP21:
             return bool(self.bip21.get('amount'))
-        elif self._type == PaymentIdentifierType.BIP70:
-            return not self.need_resolve()  # always fixed after resolve?
         elif self._type == PaymentIdentifierType.BOLT11:
             return bool(self.bolt11.get_amount_sat())
         elif self._type in [PaymentIdentifierType.LNURLP, PaymentIdentifierType.LNADDR]:
@@ -252,29 +236,24 @@ class PaymentIdentifier(Logger):
                 self.set_state(PaymentIdentifierState.INVALID)
                 return
             self.bip21 = out
-            self.bip70 = out.get('r')
-            if self.bip70:
-                self._type = PaymentIdentifierType.BIP70
-                self.set_state(PaymentIdentifierState.NEED_RESOLVE)
-            else:
-                self._type = PaymentIdentifierType.BIP21
-                # check optional lightning in bip21, set self.bolt11 if valid
-                bolt11 = out.get('lightning')
-                if bolt11:
-                    try:
-                        self.bolt11 = Invoice.from_bech32(bolt11)
-                        # carry BIP21 onchain address in Invoice.outputs in case bolt11 doesn't contain a fallback
-                        # address but the BIP21 URI has one.
-                        if bip21_address := self.bip21.get('address'):
-                            amount = self.bip21.get('amount', 0)
-                            self.bolt11.outputs = [PartialTxOutput.from_address_and_value(bip21_address, amount)]
-                    except InvoiceError as e:
-                        self.logger.debug(self._get_error_from_invoiceerror(e))
-                elif not self.bip21.get('address'):
-                    # no address and no bolt11, invalid
-                    self.set_state(PaymentIdentifierState.INVALID)
-                    return
-                self.set_state(PaymentIdentifierState.AVAILABLE)
+            self._type = PaymentIdentifierType.BIP21
+            # check optional lightning in bip21, set self.bolt11 if valid
+            bolt11 = out.get('lightning')
+            if bolt11:
+                try:
+                    self.bolt11 = Invoice.from_bech32(bolt11)
+                    # carry BIP21 onchain address in Invoice.outputs in case bolt11 doesn't contain a fallback
+                    # address but the BIP21 URI has one.
+                    if bip21_address := self.bip21.get('address'):
+                        amount = self.bip21.get('amount', 0)
+                        self.bolt11.outputs = [PartialTxOutput.from_address_and_value(bip21_address, amount)]
+                except InvoiceError as e:
+                    self.logger.debug(self._get_error_from_invoiceerror(e))
+            elif not self.bip21.get('address'):
+                # no address and no bolt11, invalid
+                self.set_state(PaymentIdentifierState.INVALID)
+                return
+            self.set_state(PaymentIdentifierState.AVAILABLE)
         elif self.parse_output(text)[0]:
             scriptpubkey, is_address = self.parse_output(text)
             self._type = PaymentIdentifierType.SPK
@@ -341,14 +320,6 @@ class PaymentIdentifier(Logger):
                         self.set_state(PaymentIdentifierState.NOT_FOUND)
                 else:
                     self.set_state(PaymentIdentifierState.NOT_FOUND)
-            elif self.bip70:
-                pr = await paymentrequest.get_payment_request(self.bip70)
-                if await pr.verify():
-                    self.bip70_data = pr
-                    self.set_state(PaymentIdentifierState.MERCHANT_NOTIFY)
-                else:
-                    self.error = pr.error
-                    self.set_state(PaymentIdentifierState.ERROR)
             elif self.lnurl:
                 data = await request_lnurl(self.lnurl)
                 self.lnurl_data = data
@@ -430,49 +401,8 @@ class PaymentIdentifier(Logger):
             if on_finished:
                 on_finished(self)
 
-    def notify_merchant(
-        self,
-        *,
-        tx: 'Transaction',
-        refund_address: str,
-        on_finished: Callable[['PaymentIdentifier'], None] = None,
-    ):
-        assert self._state == PaymentIdentifierState.MERCHANT_NOTIFY
-        assert tx
-        assert refund_address
-        coro = self._do_notify_merchant(tx, refund_address, on_finished=on_finished)
-        asyncio.run_coroutine_threadsafe(coro, get_asyncio_loop())
-
-    @log_exceptions
-    async def _do_notify_merchant(
-        self,
-        tx: 'Transaction',
-        refund_address: str,
-        *,
-        on_finished: Callable[['PaymentIdentifier'], None] = None,
-    ):
-        try:
-            if not self.bip70_data:
-                self.set_state(PaymentIdentifierState.ERROR)
-                return
-
-            ack_status, ack_msg = await self.bip70_data.send_payment_and_receive_paymentack(tx.serialize(), refund_address)
-            self.logger.info(f"Payment ACK: {ack_status}. Ack message: {ack_msg}")
-            self.merchant_ack_status = ack_status
-            self.merchant_ack_message = ack_msg
-            self.set_state(PaymentIdentifierState.MERCHANT_ACK)
-        except Exception as e:
-            self.error = str(e)
-            self.logger.error(f"_do_notify_merchant() got error: {e!r}")
-            self.set_state(PaymentIdentifierState.MERCHANT_ERROR)
-        finally:
-            if on_finished:
-                on_finished(self)
-
     def get_onchain_outputs(self, amount):
-        if self.bip70:
-            return self.bip70_data.get_outputs()
-        elif self.multiline_outputs:
+        if self.multiline_outputs:
             return self.multiline_outputs
         elif self.spk:
             return [PartialTxOutput(scriptpubkey=self.spk, value=amount)]
@@ -605,16 +535,6 @@ class PaymentIdentifier(Logger):
                 if self.lnurl_data.min_sendable_sat != self.lnurl_data.max_sendable_sat:
                     amount_range = (self.lnurl_data.min_sendable_sat, self.lnurl_data.max_sendable_sat)
 
-        elif self.bip70 and self.bip70_data:
-            pr = self.bip70_data
-            if pr.error:
-                self.error = pr.error
-            else:
-                recipient = pr.get_requestor()
-                amount = pr.get_amount()
-                description = pr.get_memo()
-                validated = not pr.has_expired()
-
         elif self.spk:
             pass
 
@@ -662,9 +582,7 @@ class PaymentIdentifier(Logger):
             return None
 
     def has_expired(self):
-        if self.bip70 and self.bip70_data:
-            return self.bip70_data.has_expired()
-        elif self.bolt11:
+        if self.bolt11:
             return self.bolt11.has_expired()
         elif self.bip21:
             expires = self.bip21.get('exp') + self.bip21.get('time') if self.bip21.get('exp') else 0
@@ -678,7 +596,7 @@ def invoice_from_payment_identifier(
     amount_sat: Union[int, str],
     message: str = None
 ) -> Optional[Invoice]:
-    assert pi.state in [PaymentIdentifierState.AVAILABLE, PaymentIdentifierState.MERCHANT_NOTIFY]
+    assert pi.state in [PaymentIdentifierState.AVAILABLE,]
     assert pi.is_onchain() if amount_sat == '!' else True  # MAX should only be allowed if pi has onchain destination
 
     if pi.is_lightning() and not amount_sat == '!':
@@ -691,49 +609,9 @@ def invoice_from_payment_identifier(
     else:
         outputs = pi.get_onchain_outputs(amount_sat)
         message = pi.bip21.get('message') if pi.bip21 else message
-        bip70_data = pi.bip70_data if pi.bip70 else None
         return wallet.create_invoice(
             outputs=outputs,
             message=message,
-            pr=bip70_data,
-            URI=pi.bip21)
+            URI=pi.bip21,
+        )
 
-
-# Note: this is only really used for bip70 to handle MECHANT_NOTIFY state from
-# a saved bip70 invoice.
-# TODO: reflect bip70-only in function name, or implement other types as well.
-def payment_identifier_from_invoice(
-    wallet: 'Abstract_Wallet',
-    invoice: Invoice
-) -> Optional[PaymentIdentifier]:
-    if not invoice:
-        return
-    pi = PaymentIdentifier(wallet, '')
-    if invoice.bip70:
-        pi._type = PaymentIdentifierType.BIP70
-        pi.bip70_data = paymentrequest.PaymentRequest(bytes.fromhex(invoice.bip70))
-        pi.set_state(PaymentIdentifierState.MERCHANT_NOTIFY)
-        return pi
-    # else:
-    #     if invoice.outputs:
-    #         if len(invoice.outputs) > 1:
-    #             pi._type = PaymentIdentifierType.MULTILINE
-    #             pi.multiline_outputs = invoice.outputs
-    #             pi.set_state(PaymentIdentifierState.AVAILABLE)
-    #         else:
-    #             pi._type = PaymentIdentifierType.BIP21
-    #             params = {}
-    #             if invoice.exp:
-    #                 params['exp'] = str(invoice.exp)
-    #             if invoice.time:
-    #                 params['time'] = str(invoice.time)
-    #             pi.bip21 = create_bip21_uri(invoice.outputs[0].address, invoice.get_amount_sat(), invoice.message,
-    #                                         extra_query_params=params)
-    #             pi.set_state(PaymentIdentifierState.AVAILABLE)
-    #     elif invoice.is_lightning():
-    #         pi._type = PaymentIdentifierType.BOLT11
-    #         pi.bolt11 = invoice
-    #         pi.set_state(PaymentIdentifierState.AVAILABLE)
-    #     else:
-    #         return None
-    #     return pi
diff --git a/electrum/paymentrequest.proto b/electrum/paymentrequest.proto
deleted file mode 100644
index 5f9f0f4..0000000
--- a/electrum/paymentrequest.proto
+++ /dev/null
@@ -1,47 +0,0 @@
-//
-// Simple Bitcoin Payment Protocol messages
-//
-// Use fields 1000+ for extensions;
-// to avoid conflicts, register extensions via pull-req at
-// https://github.com/bitcoin/bips/blob/master/bip-0070/extensions.mediawiki
-//
-
-syntax = "proto2";
-package payments;
-option java_package = "org.bitcoin.protocols.payments";
-option java_outer_classname = "Protos";
-
-// Generalized form of "send payment to this/these bitcoin addresses"
-message Output {
-        optional uint64 amount = 1 [default = 0]; // amount is integer-number-of-satoshis
-        required bytes script = 2; // usually one of the standard Script forms
-}
-message PaymentDetails {
-        optional string network = 1 [default = "main"]; // "main" or "test"
-        repeated Output outputs = 2;        // Where payment should be sent
-        required uint64 time = 3;           // Timestamp; when payment request created
-        optional uint64 expires = 4;        // Timestamp; when this request should be considered invalid
-        optional string memo = 5;           // Human-readable description of request for the customer
-        optional string payment_url = 6;    // URL to send Payment and get PaymentACK
-        optional bytes merchant_data = 7;   // Arbitrary data to include in the Payment message
-}
-message PaymentRequest {
-        optional uint32 payment_details_version = 1 [default = 1];
-        optional string pki_type = 2 [default = "none"];  // none / x509+sha256 / x509+sha1
-        optional bytes pki_data = 3;                      // depends on pki_type
-        required bytes serialized_payment_details = 4;    // PaymentDetails
-        optional bytes signature = 5;                     // pki-dependent signature
-}
-message X509Certificates {
-        repeated bytes certificate = 1;    // DER-encoded X.509 certificate chain
-}
-message Payment {
-        optional bytes merchant_data = 1;  // From PaymentDetails.merchant_data
-        repeated bytes transactions = 2;   // Signed transactions that satisfy PaymentDetails.outputs
-        repeated Output refund_to = 3;     // Where to send refunds, if a refund is necessary
-        optional string memo = 4;          // Human-readable message for the merchant
-}
-message PaymentACK {
-        required Payment payment = 1;      // Payment message that triggered this ACK
-        optional string memo = 2;          // human-readable message for customer
-}
diff --git a/electrum/paymentrequest.py b/electrum/paymentrequest.py
deleted file mode 100644
index dcd9c79..0000000
--- a/electrum/paymentrequest.py
+++ /dev/null
@@ -1,468 +0,0 @@
-#!/usr/bin/env python
-#
-# Electrum - lightweight Bitcoin client
-# Copyright (C) 2014 Thomas Voegtlin
-#
-# Permission is hereby granted, free of charge, to any person
-# obtaining a copy of this software and associated documentation files
-# (the "Software"), to deal in the Software without restriction,
-# including without limitation the rights to use, copy, modify, merge,
-# publish, distribute, sublicense, and/or sell copies of the Software,
-# and to permit persons to whom the Software is furnished to do so,
-# subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
-# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
-import hashlib
-import sys
-import time
-from typing import Optional, List, TYPE_CHECKING
-import asyncio
-import urllib.parse
-
-import certifi
-import aiohttp
-import electrum_ecc as ecc
-
-
-try:
-    from . import paymentrequest_pb2 as pb2
-except ImportError:
-    sys.exit("Error: could not find paymentrequest_pb2.py. Create it with 'contrib/generate_payreqpb2.sh'")
-
-from . import bitcoin, constants, util, transaction, x509, rsakey
-from .util import (bfh, make_aiohttp_session, error_text_bytes_to_safe_str, get_running_loop,
-                   get_asyncio_loop)
-from .invoices import Invoice, get_id_from_onchain_outputs
-from .bitcoin import address_to_script
-from .transaction import PartialTxOutput
-from .network import Network
-from .logging import get_logger
-from .contacts import Contacts
-
-if TYPE_CHECKING:
-    from .simple_config import SimpleConfig
-
-
-_logger = get_logger(__name__)
-
-
-REQUEST_HEADERS = {'Accept': 'application/bitcoin-paymentrequest', 'User-Agent': 'Electrum'}
-ACK_HEADERS = {'Content-Type': 'application/bitcoin-payment', 'Accept': 'application/bitcoin-paymentack', 'User-Agent': 'Electrum'}
-
-ca_path = certifi.where()
-ca_list = None
-ca_keyID = None
-
-
-def load_ca_list():
-    global ca_list, ca_keyID
-    if ca_list is None:
-        ca_list, ca_keyID = x509.load_certificates(ca_path)
-
-
-async def get_payment_request(url: str) -> 'PaymentRequest':
-    u = urllib.parse.urlparse(url)
-    error = None
-    if u.scheme in ('http', 'https'):
-        resp_content = None
-        try:
-            proxy = Network.get_instance().proxy
-            async with make_aiohttp_session(proxy, headers=REQUEST_HEADERS) as session:
-                async with session.get(url) as response:
-                    resp_content = await response.read()
-                    response.raise_for_status()
-                    # Guard against `bitcoin:`-URIs with invalid payment request URLs
-                    if "Content-Type" not in response.headers \
-                    or response.headers["Content-Type"] != "application/bitcoin-paymentrequest":
-                        data = None
-                        error = "payment URL not pointing to a payment request handling server"
-                    else:
-                        data = resp_content
-                    data_len = len(data) if data is not None else None
-                    _logger.info(f'fetched payment request {url} {data_len}')
-        except (aiohttp.ClientError, asyncio.TimeoutError) as e:
-            error = f"Error while contacting payment URL: {url}.\nerror type: {type(e)}"
-            if isinstance(e, aiohttp.ClientResponseError):
-                error += f"\nGot HTTP status code {e.status}."
-                if resp_content:
-                    error_text_received = error_text_bytes_to_safe_str(resp_content)
-                    error_text_received = error_text_received[:400]
-                    error_oneline = ' -- '.join(error.split('\n'))
-                    _logger.info(f"{error_oneline} -- [DO NOT TRUST THIS MESSAGE] "
-                                 f"{repr(e)} text: {error_text_received}")
-            data = None
-    else:
-        data = None
-        error = f"Unknown scheme for payment request. URL: {url}"
-    pr = PaymentRequest(data, error=error)
-    # do x509/dnssec verification now. we still expect the caller to at least check pr.error!
-    await pr.verify()
-    return pr
-
-
-class PaymentRequest:
-
-    def __init__(self, data: bytes, *, error=None):
-        self.raw = data
-        self.error = error  # type: Optional[str]
-        self._verified_success = None  # caches result of _verify
-        self._verified_success_msg = None  # type: Optional[str]
-        self._parse(data)
-        self.requestor = None # known after verify
-        self.tx = None
-
-    def __str__(self):
-        return str(self.raw)
-
-    def _parse(self, r: bytes):
-        self.outputs = []  # type: List[PartialTxOutput]
-        if self.error:
-            return
-        try:
-            self.data = pb2.PaymentRequest()
-            self.data.ParseFromString(r)
-        except Exception:
-            self.error = "cannot parse payment request"
-            return
-        self.details = pb2.PaymentDetails()
-        self.details.ParseFromString(self.data.serialized_payment_details)
-        pr_network = self.details.network
-        client_network = 'test' if constants.net.TESTNET else 'main'
-        if pr_network != client_network:
-            self.error = (f'Payment request network "{pr_network}" does not'
-                          f' match client network "{client_network}".')
-            return
-        for o in self.details.outputs:
-            addr = transaction.get_address_from_output_script(o.script)
-            if not addr:
-                # TODO maybe rm restriction but then get_requestor and get_id need changes
-                self.error = "only addresses are allowed as outputs"
-                return
-            self.outputs.append(PartialTxOutput.from_address_and_value(addr, o.amount))
-        self.memo = self.details.memo
-        self.payment_url = self.details.payment_url
-
-    async def verify(self) -> bool:
-        # FIXME: we should enforce that this method was called before we attempt payment
-        # note: this method might do network requests (at least for verify_dnssec)
-        if self._verified_success is True:
-            return True
-        if self.error:
-            return False
-        if not self.raw:
-            self.error = "Empty request"
-            return False
-        pr = pb2.PaymentRequest()
-        try:
-            pr.ParseFromString(self.raw)
-        except Exception:
-            self.error = "Error: Cannot parse payment request"
-            return False
-        if not pr.signature:
-            # the address will be displayed as requestor
-            self.requestor = None
-            return True
-        if pr.pki_type in ["x509+sha256", "x509+sha1"]:
-            return self.verify_x509(pr)
-        elif pr.pki_type in ["dnssec+btc", "dnssec+ecdsa"]:
-            return await self.verify_dnssec(pr)
-        else:
-            self.error = "ERROR: Unsupported PKI Type for Message Signature"
-            return False
-
-    def verify_x509(self, paymntreq):
-        load_ca_list()
-        if not ca_list:
-            self.error = "Trusted certificate authorities list not found"
-            return False
-        cert = pb2.X509Certificates()
-        cert.ParseFromString(paymntreq.pki_data)
-        # verify the chain of certificates
-        try:
-            x, ca = verify_cert_chain(cert.certificate)
-        except BaseException as e:
-            _logger.exception('')
-            self.error = str(e)
-            return False
-        # get requestor name
-        self.requestor = x.get_common_name()
-        if self.requestor.startswith('*.'):
-            self.requestor = self.requestor[2:]
-        # verify the BIP70 signature
-        pubkey0 = rsakey.RSAKey(x.modulus, x.exponent)
-        sig = paymntreq.signature
-        paymntreq.signature = b''
-        s = paymntreq.SerializeToString()
-        sigBytes = bytearray(sig)
-        msgBytes = bytearray(s)
-        if paymntreq.pki_type == "x509+sha256":
-            hashBytes = bytearray(hashlib.sha256(msgBytes).digest())
-            verify = pubkey0.verify(sigBytes, x509.PREFIX_RSA_SHA256 + hashBytes)
-        elif paymntreq.pki_type == "x509+sha1":
-            verify = pubkey0.hashAndVerify(sigBytes, msgBytes)
-        else:
-            self.error = f"ERROR: unknown pki_type {paymntreq.pki_type} in Payment Request"
-            return False
-        if not verify:
-            self.error = "ERROR: Invalid Signature for Payment Request Data"
-            return False
-        ### SIG Verified
-        self._verified_success_msg = 'Signed by Trusted CA: ' + ca.get_common_name()
-        self._verified_success = True
-        return True
-
-    async def verify_dnssec(self, pr):
-        sig = pr.signature
-        alias = pr.pki_data
-        info: dict = await Contacts.resolve_openalias(alias)
-        if pr.pki_type == "dnssec+btc":
-            self.requestor = alias
-            address = info.get('address')
-            pr.signature = b''
-            message = pr.SerializeToString()
-            if bitcoin.verify_usermessage_with_address(address, sig, message):
-                self._verified_success_msg = 'Verified with DNSSEC'
-                self._verified_success = True
-                return True
-            else:
-                self.error = "verify failed"
-                return False
-        else:
-            self.error = "unknown algo"
-            return False
-
-    def has_expired(self) -> Optional[bool]:
-        if not hasattr(self, 'details'):
-            return None
-        return self.details.expires and self.details.expires < int(time.time())
-
-    def get_time(self):
-        return self.details.time
-
-    def get_expiration_date(self):
-        return self.details.expires
-
-    def get_amount(self):
-        return sum(map(lambda x:x.value, self.outputs))
-
-    def get_address(self):
-        o = self.outputs[0]
-        addr = o.address
-        assert addr
-        return addr
-
-    def get_requestor(self):
-        return self.requestor if self.requestor else self.get_address()
-
-    def get_verify_status(self) -> str:
-        return (self.error or self._verified_success_msg) if self.requestor else "No Signature"
-
-    def get_memo(self):
-        return self.memo
-
-    def get_name_for_export(self) -> Optional[str]:
-        if not hasattr(self, 'details'):
-            return None
-        return get_id_from_onchain_outputs(self.outputs, timestamp=self.get_time())
-
-    def get_outputs(self):
-        return self.outputs[:]
-
-    async def send_payment_and_receive_paymentack(self, raw_tx, refund_addr):
-        pay_det = self.details
-        if not self.details.payment_url:
-            return False, "no url"
-        paymnt = pb2.Payment()
-        paymnt.merchant_data = pay_det.merchant_data
-        paymnt.transactions.append(bfh(raw_tx))
-        ref_out = paymnt.refund_to.add()
-        ref_out.script = address_to_script(refund_addr)
-        paymnt.memo = "Paid using Electrum"
-        pm = paymnt.SerializeToString()
-        payurl = urllib.parse.urlparse(pay_det.payment_url)
-        resp_content = None
-        try:
-            proxy = Network.get_instance().proxy
-            async with make_aiohttp_session(proxy, headers=ACK_HEADERS) as session:
-                async with session.post(payurl.geturl(), data=pm) as response:
-                    resp_content = await response.read()
-                    response.raise_for_status()
-                    try:
-                        paymntack = pb2.PaymentACK()
-                        paymntack.ParseFromString(resp_content)
-                    except Exception:
-                        return False, "PaymentACK could not be processed. Payment was sent; please manually verify that payment was received."
-                    print(f"PaymentACK message received: {paymntack.memo}")
-                    return True, paymntack.memo
-        except aiohttp.ClientError as e:
-            error = f"Payment Message/PaymentACK Failed:\nerror type: {type(e)}"
-            if isinstance(e, aiohttp.ClientResponseError):
-                error += f"\nGot HTTP status code {e.status}."
-                if resp_content:
-                    error_text_received = error_text_bytes_to_safe_str(resp_content)
-                    error_text_received = error_text_received[:400]
-                    error_oneline = ' -- '.join(error.split('\n'))
-                    _logger.info(f"{error_oneline} -- [DO NOT TRUST THIS MESSAGE] "
-                                 f"{repr(e)} text: {error_text_received}")
-            return False, error
-
-
-def make_unsigned_request(req: 'Invoice'):
-    addr = req.get_address()
-    time = req.time
-    exp = req.exp
-    if time and type(time) != int:
-        time = 0
-    if exp and type(exp) != int:
-        exp = 0
-    amount = req.get_amount_sat()
-    if amount is None:
-        amount = 0
-    memo = req.message
-    script = address_to_script(addr)
-    outputs = [(script, amount)]
-    pd = pb2.PaymentDetails()
-    if constants.net.TESTNET:
-        pd.network = 'test'
-    for script, amount in outputs:
-        pd.outputs.add(amount=amount, script=script)
-    pd.time = time
-    pd.expires = time + exp if exp else 0
-    pd.memo = memo
-    pr = pb2.PaymentRequest()
-    pr.serialized_payment_details = pd.SerializeToString()
-    pr.signature = util.to_bytes('')
-    return pr
-
-
-def sign_request_with_alias(pr, alias, alias_privkey):
-    pr.pki_type = 'dnssec+btc'
-    pr.pki_data = str(alias)
-    message = pr.SerializeToString()
-    ec_key = ecc.ECPrivkey(alias_privkey)
-    compressed = bitcoin.is_compressed_privkey(alias_privkey)
-    pr.signature = bitcoin.ecdsa_sign_usermessage(ec_key, message, is_compressed=compressed)
-
-
-def verify_cert_chain(chain):
-    """ Verify a chain of certificates. The last certificate is the CA"""
-    load_ca_list()
-    # parse the chain
-    cert_num = len(chain)
-    x509_chain = []
-    for i in range(cert_num):
-        x = x509.X509(bytearray(chain[i]))
-        x509_chain.append(x)
-        if i == 0:
-            x.check_date()
-        else:
-            if not x.check_ca():
-                raise Exception("ERROR: Supplied CA Certificate Error")
-    if not cert_num > 1:
-        raise Exception("ERROR: CA Certificate Chain Not Provided by Payment Processor")
-    # if the root CA is not supplied, add it to the chain
-    ca = x509_chain[cert_num-1]
-    if ca.getFingerprint() not in ca_list:
-        keyID = ca.get_issuer_keyID()
-        f = ca_keyID.get(keyID)
-        if f:
-            root = ca_list[f]
-            x509_chain.append(root)
-        else:
-            raise Exception("Supplied CA Not Found in Trusted CA Store.")
-    # verify the chain of signatures
-    cert_num = len(x509_chain)
-    for i in range(1, cert_num):
-        x = x509_chain[i]
-        prev_x = x509_chain[i-1]
-        algo, sig, data = prev_x.get_signature()
-        sig = bytearray(sig)
-        pubkey = rsakey.RSAKey(x.modulus, x.exponent)
-        if algo == x509.ALGO_RSA_SHA1:
-            verify = pubkey.hashAndVerify(sig, data)
-        elif algo == x509.ALGO_RSA_SHA256:
-            hashBytes = bytearray(hashlib.sha256(data).digest())
-            verify = pubkey.verify(sig, x509.PREFIX_RSA_SHA256 + hashBytes)
-        elif algo == x509.ALGO_RSA_SHA384:
-            hashBytes = bytearray(hashlib.sha384(data).digest())
-            verify = pubkey.verify(sig, x509.PREFIX_RSA_SHA384 + hashBytes)
-        elif algo == x509.ALGO_RSA_SHA512:
-            hashBytes = bytearray(hashlib.sha512(data).digest())
-            verify = pubkey.verify(sig, x509.PREFIX_RSA_SHA512 + hashBytes)
-        else:
-            raise Exception(f"Algorithm not supported: {algo}")
-        if not verify:
-            raise Exception("Certificate not Signed by Provided CA Certificate Chain")
-
-    return x509_chain[0], ca
-
-
-def check_ssl_config(config: 'SimpleConfig'):
-    from . import pem
-    key_path = config.SSL_KEYFILE_PATH
-    cert_path = config.SSL_CERTFILE_PATH
-    with open(key_path, 'r', encoding='utf-8') as f:
-        params = pem.parse_private_key(f.read())
-    with open(cert_path, 'r', encoding='utf-8') as f:
-        s = f.read()
-    bList = pem.dePemList(s, "CERTIFICATE")
-    # verify chain
-    x, ca = verify_cert_chain(bList)
-    # verify that privkey and pubkey match
-    privkey = rsakey.RSAKey(*params)
-    pubkey = rsakey.RSAKey(x.modulus, x.exponent)
-    assert x.modulus == params[0]
-    assert x.exponent == params[1]
-    # return requestor
-    requestor = x.get_common_name()
-    if requestor.startswith('*.'):
-        requestor = requestor[2:]
-    return requestor
-
-
-def sign_request_with_x509(pr, key_path, cert_path):
-    from . import pem
-    with open(key_path, 'r', encoding='utf-8') as f:
-        params = pem.parse_private_key(f.read())
-        privkey = rsakey.RSAKey(*params)
-    with open(cert_path, 'r', encoding='utf-8') as f:
-        s = f.read()
-        bList = pem.dePemList(s, "CERTIFICATE")
-    certificates = pb2.X509Certificates()
-    certificates.certificate.extend(map(bytes, bList))
-    pr.pki_type = 'x509+sha256'
-    pr.pki_data = certificates.SerializeToString()
-    msgBytes = bytearray(pr.SerializeToString())
-    hashBytes = bytearray(hashlib.sha256(msgBytes).digest())
-    sig = privkey.sign(x509.PREFIX_RSA_SHA256 + hashBytes)
-    pr.signature = bytes(sig)
-
-
-def serialize_request(req):  # FIXME this is broken
-    pr = make_unsigned_request(req)
-    signature = req.get('sig')
-    requestor = req.get('name')
-    if requestor and signature:
-        pr.signature = bfh(signature)
-        pr.pki_type = 'dnssec+btc'
-        pr.pki_data = str(requestor)
-    return pr
-
-
-def make_request(config: 'SimpleConfig', req: 'Invoice'):
-    pr = make_unsigned_request(req)
-    key_path = config.SSL_KEYFILE_PATH
-    cert_path = config.SSL_CERTFILE_PATH
-    if key_path and cert_path:
-        sign_request_with_x509(pr, key_path, cert_path)
-    return pr
diff --git a/electrum/paymentrequest_pb2.py b/electrum/paymentrequest_pb2.py
deleted file mode 100644
index fe5c53b..0000000
--- a/electrum/paymentrequest_pb2.py
+++ /dev/null
@@ -1,36 +0,0 @@
-# -*- coding: utf-8 -*-
-# Generated by the protocol buffer compiler.  DO NOT EDIT!
-# source: paymentrequest.proto
-"""Generated protocol buffer code."""
-from google.protobuf.internal import builder as _builder
-from google.protobuf import descriptor as _descriptor
-from google.protobuf import descriptor_pool as _descriptor_pool
-from google.protobuf import symbol_database as _symbol_database
-# @@protoc_insertion_point(imports)
-
-_sym_db = _symbol_database.Default()
-
-
-
-
-DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x14paymentrequest.proto\x12\x08payments\"+\n\x06Output\x12\x11\n\x06\x61mount\x18\x01 \x01(\x04:\x01\x30\x12\x0e\n\x06script\x18\x02 \x02(\x0c\"\xa3\x01\n\x0ePaymentDetails\x12\x15\n\x07network\x18\x01 \x01(\t:\x04main\x12!\n\x07outputs\x18\x02 \x03(\x0b\x32\x10.payments.Output\x12\x0c\n\x04time\x18\x03 \x02(\x04\x12\x0f\n\x07\x65xpires\x18\x04 \x01(\x04\x12\x0c\n\x04memo\x18\x05 \x01(\t\x12\x13\n\x0bpayment_url\x18\x06 \x01(\t\x12\x15\n\rmerchant_data\x18\x07 \x01(\x0c\"\x95\x01\n\x0ePaymentRequest\x12\"\n\x17payment_details_version\x18\x01 \x01(\r:\x01\x31\x12\x16\n\x08pki_type\x18\x02 \x01(\t:\x04none\x12\x10\n\x08pki_data\x18\x03 \x01(\x0c\x12\"\n\x1aserialized_payment_details\x18\x04 \x02(\x0c\x12\x11\n\tsignature\x18\x05 \x01(\x0c\"\'\n\x10X509Certificates\x12\x13\n\x0b\x63\x65rtificate\x18\x01 \x03(\x0c\"i\n\x07Payment\x12\x15\n\rmerchant_data\x18\x01 \x01(\x0c\x12\x14\n\x0ctransactions\x18\x02 \x03(\x0c\x12#\n\trefund_to\x18\x03 \x03(\x0b\x32\x10.payments.Output\x12\x0c\n\x04memo\x18\x04 \x01(\t\">\n\nPaymentACK\x12\"\n\x07payment\x18\x01 \x02(\x0b\x32\x11.payments.Payment\x12\x0c\n\x04memo\x18\x02 \x01(\tB(\n\x1eorg.bitcoin.protocols.paymentsB\x06Protos')
-
-_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, globals())
-_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'paymentrequest_pb2', globals())
-if _descriptor._USE_C_DESCRIPTORS == False:
-
-  DESCRIPTOR._options = None
-  DESCRIPTOR._serialized_options = b'\n\036org.bitcoin.protocols.paymentsB\006Protos'
-  _OUTPUT._serialized_start=34
-  _OUTPUT._serialized_end=77
-  _PAYMENTDETAILS._serialized_start=80
-  _PAYMENTDETAILS._serialized_end=243
-  _PAYMENTREQUEST._serialized_start=246
-  _PAYMENTREQUEST._serialized_end=395
-  _X509CERTIFICATES._serialized_start=397
-  _X509CERTIFICATES._serialized_end=436
-  _PAYMENT._serialized_start=438
-  _PAYMENT._serialized_end=543
-  _PAYMENTACK._serialized_start=545
-  _PAYMENTACK._serialized_end=607
-# @@protoc_insertion_point(module_scope)
diff --git a/electrum/rsakey.py b/electrum/rsakey.py
deleted file mode 100644
index 5266e9c..0000000
--- a/electrum/rsakey.py
+++ /dev/null
@@ -1,535 +0,0 @@
-#!/usr/bin/env python
-#
-# Electrum - lightweight Bitcoin client
-# Copyright (C) 2015 Thomas Voegtlin
-#
-# Permission is hereby granted, free of charge, to any person
-# obtaining a copy of this software and associated documentation files
-# (the "Software"), to deal in the Software without restriction,
-# including without limitation the rights to use, copy, modify, merge,
-# publish, distribute, sublicense, and/or sell copies of the Software,
-# and to permit persons to whom the Software is furnished to do so,
-# subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
-# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
-# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-# SOFTWARE.
-
-# This module uses functions from TLSLite (public domain)
-#
-# TLSLite Authors:
-#   Trevor Perrin
-#   Martin von Loewis - python 3 port
-#   Yngve Pettersen (ported by Paul Sokolovsky) - TLS 1.2
-#
-
-"""Pure-Python RSA implementation."""
-
-import os
-import math
-import hashlib
-
-
-def SHA1(x):
-    return hashlib.sha1(x).digest()
-
-
-# **************************************************************************
-# PRNG Functions
-# **************************************************************************
-
-
-def getRandomBytes(howMany):
-    b = bytearray(os.urandom(howMany))
-    assert len(b) == howMany
-    return b
-
-prngName = "os.urandom"
-
-
-# **************************************************************************
-# Converter Functions
-# **************************************************************************
-
-def bytesToNumber(b):
-    total = 0
-    multiplier = 1
-    for count in range(len(b)-1, -1, -1):
-        byte = b[count]
-        total += multiplier * byte
-        multiplier *= 256
-    return total
-
-def numberToByteArray(n, howManyBytes=None):
-    """Convert an integer into a bytearray, zero-pad to howManyBytes.
-
-    The returned bytearray may be smaller than howManyBytes, but will
-    not be larger.  The returned bytearray will contain a big-endian
-    encoding of the input integer (n).
-    """
-    if howManyBytes is None:
-        howManyBytes = numBytes(n)
-    b = bytearray(howManyBytes)
-    for count in range(howManyBytes-1, -1, -1):
-        b[count] = int(n % 256)
-        n >>= 8
-    return b
-
-def mpiToNumber(mpi): #mpi is an openssl-format bignum string
-    if (ord(mpi[4]) & 0x80) !=0: #Make sure this is a positive number
-        raise AssertionError()
-    b = bytearray(mpi[4:])
-    return bytesToNumber(b)
-
-def numberToMPI(n):
-    b = numberToByteArray(n)
-    ext = 0
-    #If the high-order bit is going to be set,
-    #add an extra byte of zeros
-    if (numBits(n) & 0x7)==0:
-        ext = 1
-    length = numBytes(n) + ext
-    b = bytearray(4+ext) + b
-    b[0] = (length >> 24) & 0xFF
-    b[1] = (length >> 16) & 0xFF
-    b[2] = (length >> 8) & 0xFF
-    b[3] = length & 0xFF
-    return bytes(b)
-
-
-# **************************************************************************
-# Misc. Utility Functions
-# **************************************************************************
-
-def numBits(n):
-    if n==0:
-        return 0
-    s = "%x" % n
-    return ((len(s)-1)*4) + \
-    {'0':0, '1':1, '2':2, '3':2,
-     '4':3, '5':3, '6':3, '7':3,
-     '8':4, '9':4, 'a':4, 'b':4,
-     'c':4, 'd':4, 'e':4, 'f':4,
-     }[s[0]]
-
-def numBytes(n):
-    if n==0:
-        return 0
-    bits = numBits(n)
-    return int(math.ceil(bits / 8.0))
-
-# **************************************************************************
-# Big Number Math
-# **************************************************************************
-
-def getRandomNumber(low, high):
-    if low >= high:
-        raise AssertionError()
-    howManyBits = numBits(high)
-    howManyBytes = numBytes(high)
-    lastBits = howManyBits % 8
-    while 1:
-        bytes = getRandomBytes(howManyBytes)
-        if lastBits:
-            bytes[0] = bytes[0] % (1 << lastBits)
-        n = bytesToNumber(bytes)
-        if n >= low and n < high:
-            return n
-
-def gcd(a,b):
-    a, b = max(a,b), min(a,b)
-    while b:
-        a, b = b, a % b
-    return a
-
-def lcm(a, b):
-    return (a * b) // gcd(a, b)
-
-#Returns inverse of a mod b, zero if none
-#Uses Extended Euclidean Algorithm
-def invMod(a, b):
-    c, d = a, b
-    uc, ud = 1, 0
-    while c != 0:
-        q = d // c
-        c, d = d-(q*c), c
-        uc, ud = ud - (q * uc), uc
-    if d == 1:
-        return ud % b
-    return 0
-
-
-def powMod(base, power, modulus):
-    if power < 0:
-        result = pow(base, power*-1, modulus)
-        result = invMod(result, modulus)
-        return result
-    else:
-        return pow(base, power, modulus)
-
-#Pre-calculate a sieve of the ~100 primes < 1000:
-def makeSieve(n):
-    sieve = list(range(n))
-    for count in range(2, int(math.sqrt(n))+1):
-        if sieve[count] == 0:
-            continue
-        x = sieve[count] * 2
-        while x < len(sieve):
-            sieve[x] = 0
-            x += sieve[count]
-    sieve = [x for x in sieve[2:] if x]
-    return sieve
-
-sieve = makeSieve(1000)
-
-def isPrime(n, iterations=5, display=False):
-    #Trial division with sieve
-    for x in sieve:
-        if x >= n: return True
-        if n % x == 0: return False
-    #Passed trial division, proceed to Rabin-Miller
-    #Rabin-Miller implemented per Ferguson & Schneier
-    #Compute s, t for Rabin-Miller
-    if display: print("*", end=' ')
-    s, t = n-1, 0
-    while s % 2 == 0:
-        s, t = s//2, t+1
-    #Repeat Rabin-Miller x times
-    a = 2 #Use 2 as a base for first iteration speedup, per HAC
-    for count in range(iterations):
-        v = powMod(a, s, n)
-        if v==1:
-            continue
-        i = 0
-        while v != n-1:
-            if i == t-1:
-                return False
-            else:
-                v, i = powMod(v, 2, n), i+1
-        a = getRandomNumber(2, n)
-    return True
-
-def getRandomPrime(bits, display=False):
-    if bits < 10:
-        raise AssertionError()
-    #The 1.5 ensures the 2 MSBs are set
-    #Thus, when used for p,q in RSA, n will have its MSB set
-    #
-    #Since 30 is lcm(2,3,5), we'll set our test numbers to
-    #29 % 30 and keep them there
-    low = ((2 ** (bits-1)) * 3) // 2
-    high = 2 ** bits - 30
-    p = getRandomNumber(low, high)
-    p += 29 - (p % 30)
-    while 1:
-        if display: print(".", end=' ')
-        p += 30
-        if p >= high:
-            p = getRandomNumber(low, high)
-            p += 29 - (p % 30)
-        if isPrime(p, display=display):
-            return p
-
-#Unused at the moment...
-def getRandomSafePrime(bits, display=False):
-    if bits < 10:
-        raise AssertionError()
-    #The 1.5 ensures the 2 MSBs are set
-    #Thus, when used for p,q in RSA, n will have its MSB set
-    #
-    #Since 30 is lcm(2,3,5), we'll set our test numbers to
-    #29 % 30 and keep them there
-    low = (2 ** (bits-2)) * 3//2
-    high = (2 ** (bits-1)) - 30
-    q = getRandomNumber(low, high)
-    q += 29 - (q % 30)
-    while 1:
-        if display: print(".", end=' ')
-        q += 30
-        if (q >= high):
-            q = getRandomNumber(low, high)
-            q += 29 - (q % 30)
-        #Ideas from Tom Wu's SRP code
-        #Do trial division on p and q before Rabin-Miller
-        if isPrime(q, 0, display=display):
-            p = (2 * q) + 1
-            if isPrime(p, display=display):
-                if isPrime(q, display=display):
-                    return p
-
-
-class RSAKey(object):
-
-    def __init__(self, n=0, e=0, d=0, p=0, q=0, dP=0, dQ=0, qInv=0):
-        if (n and not e) or (e and not n):
-            raise AssertionError()
-        self.n = n
-        self.e = e
-        self.d = d
-        self.p = p
-        self.q = q
-        self.dP = dP
-        self.dQ = dQ
-        self.qInv = qInv
-        self.blinder = 0
-        self.unblinder = 0
-
-    def __len__(self):
-        """Return the length of this key in bits.
-
-        @rtype: int
-        """
-        return numBits(self.n)
-
-    def hasPrivateKey(self):
-        return self.d != 0
-
-    def hashAndSign(self, bytes):
-        """Hash and sign the passed-in bytes.
-
-        This requires the key to have a private component.  It performs
-        a PKCS1-SHA1 signature on the passed-in data.
-
-        @type bytes: str or L{bytearray} of unsigned bytes
-        @param bytes: The value which will be hashed and signed.
-
-        @rtype: L{bytearray} of unsigned bytes.
-        @return: A PKCS1-SHA1 signature on the passed-in data.
-        """
-        hashBytes = SHA1(bytearray(bytes))
-        prefixedHashBytes = self._addPKCS1SHA1Prefix(hashBytes)
-        sigBytes = self.sign(prefixedHashBytes)
-        return sigBytes
-
-    def hashAndVerify(self, sigBytes, bytes):
-        """Hash and verify the passed-in bytes with the signature.
-
-        This verifies a PKCS1-SHA1 signature on the passed-in data.
-
-        @type sigBytes: L{bytearray} of unsigned bytes
-        @param sigBytes: A PKCS1-SHA1 signature.
-
-        @type bytes: str or L{bytearray} of unsigned bytes
-        @param bytes: The value which will be hashed and verified.
-
-        @rtype: bool
-        @return: Whether the signature matches the passed-in data.
-        """
-        hashBytes = SHA1(bytearray(bytes))
-
-        # Try it with/without the embedded NULL
-        prefixedHashBytes1 = self._addPKCS1SHA1Prefix(hashBytes, False)
-        prefixedHashBytes2 = self._addPKCS1SHA1Prefix(hashBytes, True)
-        result1 = self.verify(sigBytes, prefixedHashBytes1)
-        result2 = self.verify(sigBytes, prefixedHashBytes2)
-        return (result1 or result2)
-
-    def sign(self, bytes):
-        """Sign the passed-in bytes.
-
-        This requires the key to have a private component.  It performs
-        a PKCS1 signature on the passed-in data.
-
-        @type bytes: L{bytearray} of unsigned bytes
-        @param bytes: The value which will be signed.
-
-        @rtype: L{bytearray} of unsigned bytes.
-        @return: A PKCS1 signature on the passed-in data.
-        """
-        if not self.hasPrivateKey():
-            raise AssertionError()
-        paddedBytes = self._addPKCS1Padding(bytes, 1)
-        m = bytesToNumber(paddedBytes)
-        if m >= self.n:
-            raise ValueError()
-        c = self._rawPrivateKeyOp(m)
-        sigBytes = numberToByteArray(c, numBytes(self.n))
-        return sigBytes
-
-    def verify(self, sigBytes, bytes):
-        """Verify the passed-in bytes with the signature.
-
-        This verifies a PKCS1 signature on the passed-in data.
-
-        @type sigBytes: L{bytearray} of unsigned bytes
-        @param sigBytes: A PKCS1 signature.
-
-        @type bytes: L{bytearray} of unsigned bytes
-        @param bytes: The value which will be verified.
-
-        @rtype: bool
-        @return: Whether the signature matches the passed-in data.
-        """
-        if len(sigBytes) != numBytes(self.n):
-            return False
-        paddedBytes = self._addPKCS1Padding(bytes, 1)
-        c = bytesToNumber(sigBytes)
-        if c >= self.n:
-            return False
-        m = self._rawPublicKeyOp(c)
-        checkBytes = numberToByteArray(m, numBytes(self.n))
-        return checkBytes == paddedBytes
-
-    def encrypt(self, bytes):
-        """Encrypt the passed-in bytes.
-
-        This performs PKCS1 encryption of the passed-in data.
-
-        @type bytes: L{bytearray} of unsigned bytes
-        @param bytes: The value which will be encrypted.
-
-        @rtype: L{bytearray} of unsigned bytes.
-        @return: A PKCS1 encryption of the passed-in data.
-        """
-        paddedBytes = self._addPKCS1Padding(bytes, 2)
-        m = bytesToNumber(paddedBytes)
-        if m >= self.n:
-            raise ValueError()
-        c = self._rawPublicKeyOp(m)
-        encBytes = numberToByteArray(c, numBytes(self.n))
-        return encBytes
-
-    def decrypt(self, encBytes):
-        """Decrypt the passed-in bytes.
-
-        This requires the key to have a private component.  It performs
-        PKCS1 decryption of the passed-in data.
-
-        @type encBytes: L{bytearray} of unsigned bytes
-        @param encBytes: The value which will be decrypted.
-
-        @rtype: L{bytearray} of unsigned bytes or None.
-        @return: A PKCS1 decryption of the passed-in data or None if
-        the data is not properly formatted.
-        """
-        if not self.hasPrivateKey():
-            raise AssertionError()
-        if len(encBytes) != numBytes(self.n):
-            return None
-        c = bytesToNumber(encBytes)
-        if c >= self.n:
-            return None
-        m = self._rawPrivateKeyOp(c)
-        decBytes = numberToByteArray(m, numBytes(self.n))
-        #Check first two bytes
-        if decBytes[0] != 0 or decBytes[1] != 2:
-            return None
-        #Scan through for zero separator
-        for x in range(1, len(decBytes)-1):
-            if decBytes[x]== 0:
-                break
-        else:
-            return None
-        return decBytes[x+1:] #Return everything after the separator
-
-
-
-
-    # **************************************************************************
-    # Helper Functions for RSA Keys
-    # **************************************************************************
-
-    def _addPKCS1SHA1Prefix(self, bytes, withNULL=True):
-        # There is a long history of confusion over whether the SHA1
-        # algorithmIdentifier should be encoded with a NULL parameter or
-        # with the parameter omitted.  While the original intention was
-        # apparently to omit it, many toolkits went the other way.  TLS 1.2
-        # specifies the NULL should be included, and this behavior is also
-        # mandated in recent versions of PKCS #1, and is what tlslite has
-        # always implemented.  Anyways, verification code should probably
-        # accept both.  However, nothing uses this code yet, so this is
-        # all fairly moot.
-        if not withNULL:
-            prefixBytes = bytearray(\
-            [0x30,0x1f,0x30,0x07,0x06,0x05,0x2b,0x0e,0x03,0x02,0x1a,0x04,0x14])
-        else:
-            prefixBytes = bytearray(\
-            [0x30,0x21,0x30,0x09,0x06,0x05,0x2b,0x0e,0x03,0x02,0x1a,0x05,0x00,0x04,0x14])
-        prefixedBytes = prefixBytes + bytes
-        return prefixedBytes
-
-    def _addPKCS1Padding(self, bytes, blockType):
-        padLength = (numBytes(self.n) - (len(bytes)+3))
-        if blockType == 1: #Signature padding
-            pad = [0xFF] * padLength
-        elif blockType == 2: #Encryption padding
-            pad = bytearray(0)
-            while len(pad) < padLength:
-                padBytes = getRandomBytes(padLength * 2)
-                pad = [b for b in padBytes if b != 0]
-                pad = pad[:padLength]
-        else:
-            raise AssertionError()
-
-        padding = bytearray([0,blockType] + pad + [0])
-        paddedBytes = padding + bytes
-        return paddedBytes
-
-
-
-
-    def _rawPrivateKeyOp(self, m):
-        #Create blinding values, on the first pass:
-        if not self.blinder:
-            self.unblinder = getRandomNumber(2, self.n)
-            self.blinder = powMod(invMod(self.unblinder, self.n), self.e,
-                                  self.n)
-
-        #Blind the input
-        m = (m * self.blinder) % self.n
-
-        #Perform the RSA operation
-        c = self._rawPrivateKeyOpHelper(m)
-
-        #Unblind the output
-        c = (c * self.unblinder) % self.n
-
-        #Update blinding values
-        self.blinder = (self.blinder * self.blinder) % self.n
-        self.unblinder = (self.unblinder * self.unblinder) % self.n
-
-        #Return the output
-        return c
-
-
-    def _rawPrivateKeyOpHelper(self, m):
-        #Non-CRT version
-        #c = powMod(m, self.d, self.n)
-
-        #CRT version  (~3x faster)
-        s1 = powMod(m, self.dP, self.p)
-        s2 = powMod(m, self.dQ, self.q)
-        h = ((s1 - s2) * self.qInv) % self.p
-        c = s2 + self.q * h
-        return c
-
-    def _rawPublicKeyOp(self, c):
-        m = powMod(c, self.e, self.n)
-        return m
-
-    def acceptsPassword(self):
-        return False
-
-    def generate(bits):
-        key = RSAKey()
-        p = getRandomPrime(bits//2, False)
-        q = getRandomPrime(bits//2, False)
-        t = lcm(p-1, q-1)
-        key.n = p * q
-        key.e = 65537
-        key.d = invMod(key.e, t)
-        key.p = p
-        key.q = q
-        key.dP = key.d % (p-1)
-        key.dQ = key.d % (q-1)
-        key.qInv = invMod(q, p)
-        return key
-    generate = staticmethod(generate)
diff --git a/electrum/wallet.py b/electrum/wallet.py
index de34105..3529403 100644
--- a/electrum/wallet.py
+++ b/electrum/wallet.py
@@ -1252,10 +1252,8 @@ class Abstract_Wallet(ABC, Logger, EventListener):
 
         return transactions
 
-    def create_invoice(self, *, outputs: List[PartialTxOutput], message, pr, URI) -> Invoice:
+    def create_invoice(self, *, outputs: List[PartialTxOutput], message, URI) -> Invoice:
         height = self.adb.get_local_height()
-        if pr:
-            return Invoice.from_bip70_payreq(pr, height=height)
         amount_msat = 0
         for x in outputs:
             if parse_max_spend(x.value):
@@ -1277,7 +1275,6 @@ class Abstract_Wallet(ABC, Logger, EventListener):
             time=timestamp,
             exp=exp,
             outputs=outputs,
-            bip70=None,
             height=height,
             lightning_invoice=None,
         )
@@ -2970,8 +2967,6 @@ class Abstract_Wallet(ABC, Logger, EventListener):
             amount_sat = x.get_amount_sat()
             assert isinstance(amount_sat, (int, str, type(None)))
             d['outputs'] = [y.to_legacy_tuple() for y in x.get_outputs()]
-            if x.bip70:
-                d['bip70'] = x.bip70
         return d
 
     def get_invoices_and_requests_touched_by_tx(self, tx):
@@ -3055,7 +3050,6 @@ class Abstract_Wallet(ABC, Logger, EventListener):
             amount_msat=amount_msat,
             exp=exp_delay,
             height=height,
-            bip70=None,
             payment_hash=payment_hash,
         )
         key = self.add_payment_request(req)
diff --git a/tests/qml/test_qml_types.py b/tests/qml/test_qml_types.py
index b578888..ba14fe1 100644
--- a/tests/qml/test_qml_types.py
+++ b/tests/qml/test_qml_types.py
@@ -108,7 +108,6 @@ class TestTypes(QETestCase):
             time=1692716965,
             exp=LN_EXPIRY_NEVER,
             outputs=outputs,
-            bip70=None,
             height=0,
             lightning_invoice=None,
         )
@@ -124,7 +123,6 @@ class TestTypes(QETestCase):
             time=1692716965,
             exp=LN_EXPIRY_NEVER,
             outputs=outputs,
-            bip70=None,
             height=0,
             lightning_invoice=None,
         )
diff --git a/tests/test_invoices.py b/tests/test_invoices.py
index 2677802..89a7fda 100644
--- a/tests/test_invoices.py
+++ b/tests/test_invoices.py
@@ -233,7 +233,6 @@ class TestBaseInvoice(ElectrumTestCase):
             time=1692716965,
             exp=LN_EXPIRY_NEVER,
             outputs=outputs,
-            bip70=None,
             height=0,
             lightning_invoice=None,
         )
@@ -248,7 +247,6 @@ class TestBaseInvoice(ElectrumTestCase):
                 time=1692716965,
                 exp=LN_EXPIRY_NEVER,
                 outputs=outputs,
-                bip70=None,
                 height=0,
                 lightning_invoice=None,
             )
diff --git a/tests/test_payment_identifier.py b/tests/test_payment_identifier.py
index 0f3a3bf..046f5ba 100644
--- a/tests/test_payment_identifier.py
+++ b/tests/test_payment_identifier.py
@@ -391,16 +391,6 @@ class TestPaymentIdentifier(ElectrumTestCase):
             self.assertFalse(pi.is_available())
             self.assertTrue(pi.need_resolve())
 
-    def test_bip70(self):
-        pi_str = 'bitcoin:?r=https://test.bitpay.com/i/87iLJoaYVyJwFXtdassQJv'
-        pi = PaymentIdentifier(None, pi_str)
-        self.assertTrue(pi.is_valid())
-        self.assertEqual(PaymentIdentifierType.BIP70, pi.type)
-        self.assertFalse(pi.is_available())
-        self.assertTrue(pi.need_resolve())
-
-        # TODO resolve mock
-
     async def test_invoice_from_payment_identifier(self):
         # amount, expired, message, lightning w matching amount
         bip21 = 'bitcoin:1RustyRX2oai4EYYDpQGWvEL62BBGqN9T?amount=0.02&message=unit_test&time=1707382023&exp=3600&lightning=lnbc20m1pvjluezpp5qqqsyqcyq5rqwzqfqqqsyqcyq5rqwzqfqqqsyqcyq5rqwzqfqypqhp58yjmdan79s6qqdhdzgynm4zwqd5d7xmw5fk98klysy043l2ahrqsfpp3qjmp7lwpagxun9pygexvgpjdc4jdj85fr9yq20q82gphp2nflc7jtzrcazrra7wwgzxqc8u7754cdlpfrmccae92qgzqvzq2ps8pqqqqqqpqqqqq9qqqvpeuqafqxu92d8lr6fvg0r5gv0heeeqgcrqlnm6jhphu9y00rrhy4grqszsvpcgpy9qqqqqqgqqqqq7qqzqj9n4evl6mr5aj9f58zp6fyjzup6ywn3x6sk8akg5v4tgn2q8g4fhx05wf6juaxu9760yp46454gpg5mtzgerlzezqcqvjnhjh8z3g2qqdhhwkj'