In GPL v3.0 paragraph 5a it says:
The work must carry prominent notices stating that you modified it, and giving a relevant date.
Is adding your copyright notice enough? (like described in this question)
/* * Some open source application * Component Foo * (C) 2019 by The guy who made a modification (firstname.lastname@example.org) * (C) 2018 by Original Author(email@example.com) * * This program 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 of the License, or * (at your option) any later version. * * This program 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 this program. If not, see <https://www.gnu.org/licenses/>. */
Or should there be a separate modification notice? And how should this notice look?
In particular, what is the recommended way of creating a "prominent notice" for a bigger project that includes a modified version of another smaller project licensed under GPL v3.0?