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diff --git a/src/exchangedb/0002-cs_nonce_locks.sql b/src/exchangedb/0002-cs_nonce_locks.sql
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+--
+-- This file is part of TALER
+-- Copyright (C) 2014--2022 Taler Systems SA
+--
+-- TALER is free software; you can redistribute it and/or modify it under the
+-- terms of the GNU General Public License as published by the Free Software
+-- Foundation; either version 3, or (at your option) any later version.
+--
+-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+-- A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License along with
+-- TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
+--
+
+CREATE FUNCTION create_table_cs_nonce_locks(
+ partition_suffix TEXT DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+BEGIN
+ PERFORM create_partitioned_table(
+ 'CREATE TABLE %I'
+ '(cs_nonce_lock_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY'
+ ',nonce BYTEA PRIMARY KEY CHECK (LENGTH(nonce)=32)'
+ ',op_hash BYTEA NOT NULL CHECK (LENGTH(op_hash)=64)'
+ ',max_denomination_serial INT8 NOT NULL'
+ ') %s ;'
+ ,'cs_nonce_locks'
+ ,'PARTITION BY HASH (nonce)'
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_table(
+ 'ensures a Clause Schnorr client nonce is locked for use with an operation identified by a hash'
+ ,'cs_nonce_locks'
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'actual nonce submitted by the client'
+ ,'nonce'
+ ,'cs_nonce_locks'
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'hash (RC for refresh, blind coin hash for withdraw) the nonce may be used with'
+ ,'op_hash'
+ ,'cs_nonce_locks'
+ ,partition_suffix
+ );
+ PERFORM comment_partitioned_column(
+ 'Maximum number of a CS denomination serial the nonce could be used with, for GC'
+ ,'max_denomination_serial'
+ ,'cs_nonce_locks'
+ ,partition_suffix
+ );
+END
+$$;
+
+
+CREATE FUNCTION constrain_table_cs_nonce_locks(
+ IN partition_suffix TEXT
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+ table_name TEXT DEFAULT 'cs_nonce_locks';
+BEGIN
+ table_name = concat_ws('_', table_name, partition_suffix);
+ EXECUTE FORMAT (
+ 'ALTER TABLE ' || table_name ||
+ ' ADD CONSTRAINT ' || table_name || '_cs_nonce_lock_serial_id_key'
+ ' UNIQUE (cs_nonce_lock_serial_id)'
+ );
+END
+$$;
+
+
+INSERT INTO exchange_tables
+ (name
+ ,version
+ ,action
+ ,partitioned
+ ,by_range)
+ VALUES
+ ('cs_nonce_locks'
+ ,'exchange-0002'
+ ,'create'
+ ,TRUE
+ ,FALSE),
+ ('cs_nonce_locks'
+ ,'exchange-0002'
+ ,'constrain'
+ ,TRUE
+ ,FALSE);