My 2 cents...
If they are black black give them a squeeze. If they are hard, give it a try. If mushy, time to start new ones.
An overnite soak is a great indicator of seed viability. If it does not sink, it is most likely dead.
I always use paper towel and then place my sprouts in go cups. I put damp paper towel on a plate and place in a large ziplock bag. This time of year I have to sit them on a heat mat (dry out fast be careful), they just wont sprout without it. Not even the top of the fridge. My house is just too cold I think.
Planting straight in dirt, They seem to pop slower, I find seeds go too shallow in the cup and watering can displace them. They can move to the side or surface, but if they have a bit of a tap root they will stay in place.
In past summers, if I start 6 seeds in solo cups. 4 may pop. Dig thru other 2 cups and usually cant even find the other seeds. Can be frustrating.
Vegetable seeds go straight in dirt. Most pot seeds are too dear to me to take the chance.
stays in place.
one of the towels dried out too much on heatmat and slowed these three C99s, but constant 100% germination. 2 days usaully does it.
Aug. Timewarp 6/6, C99 Timewarp 6/6, C99s plus 3 above 6/6. Spring is a comin.
cuttings at back are pretty fresh and look a bit sickly. They do that. Not to worry.
P.S. what do giving and receiving likes, do for us?