No, a copyright symbol (©) next to a signature does not necessarily indicate that a painting is an original. The symbol signifies that the work is protected by copyright law, which applies to both original works and reproductions. To confirm if a painting is an original, one would need to consider additional factors like provenance, authenticity certificates, or the artist's statements.
If you mean this: © then it means 'copyright'.
Copyright is symbolised with a little c in a circle.
copyright symbol is c with circle ©
A c in a circle.
Copyright
A c inside a circle.
A c with a circle around it.
A c with a circle around it is the 'copyright' symbol.
The little c in a circle is the symbol for copyright.
The Magic Circle - Waterhouse painting - was created in 1886.
4/4 For The circle of Life
The letter "c" refers to "copyright". The circle-C symbol is easily recognized, even by people who do not understand English.