I never thought about doing coffee filters and since I have a lot of those I can use those... Thanks for that idea :)

I am a first time seed grower my self and I did what you are doing and the first time I didn't soak them in water perioxide mix and they molded on me. So I still need a month or two to see if I did it right :)

Howdy,
First time sower of rose seeds here, too. I religiously followed the hydrogen peroxide method on rose hips of 'Madame Isaac Pereire' and afterwards performed two experiments--one seed batch went straight into moist paper towels at 70F; the other batch underwent cold moist stratification in my fridge at 40F. Today I am beginning to have massive germination in the warm batch, but so far none in the cold, moist batch. I pricked out the germinating seeds and will grow them on in a warm greenhouse. FWIW.

First off, I tried the coffee filters and they disintegrated really quickly so I'm back to a good sturdy paper towel.

Second, don't worry about the mold. That doesn't mean they won't germinate. There are some studies that show that the mold may even aid in germination. So don't throw them away. Keep checking them!

Don't be afraid to really scrub those seeds! You want to get all of the hip material off of them and that's tough. But so are the seeds so you don't need to be gentle about it. I SCRUB mine against the sides of a fine mesh sieve. It's thought that the hip material has some kind of enzyme in it that inhibits germination so get it all off.

Mine go into the fridge too but I start to check them at about 2 to 3 weeks because they will start germinating in the fridge. If you wait 2 months you'll lose some of them because that's too long for them to go. After that I check them once a week until I stop seeing germinations. I also rotate the seeds in and out of the fridge a week at a time and sometimes that will jump start germination.

The germinated seeds go into starter trays filled with seed starting soil and under lights. When they get 2 sets of real leaves I pot them up into cups and if it's warm out they go outside. If not they stay under the lights until it is warm enough outside but I get them outside as soon as possible. Roses hate the conditions inside most homes. If it's hot outside put them in morning sun only or in a place that gets dappled shade most of the day. Do not let them dry out completely. Keep them moist but not soggy and they should do fine for you.

My rose hybridizing information is at the link below.

I recomment sand rather than paper. The reasons for using moist sand instead of moist paper are: 1) that the sand changes color when drying out, 2) the root of the sprouted seed is not as easily damaged when removed from sand as when removed from paper, 3) the sand does not decompose and 4) the seeds are easily separated from the sand by using a kitchen wire strainer with a mesh large enough to pass the sand particles but not the seeds. The last is important as some seeds leach out inhibitor chemicals. A "freshen up" every once in a while with the strainer gets rid of the leached out inhibitor. The leaching away of inhibitor is one of the possible reasons given for an explosion of seed germination outside after a heavy rain.

Here is a link that might be useful: link for rose hybridizing info