Tempering chocolated fail!
It seems that everything went well and your chocolate is tempered after all. 

High quality chocolate has no other fat but cocoa butter, and couverture has much more cocoa butter than a chocolate bar. This is what it gives it the "snappy" feeling when bitten, and what makes it melt in the mouth (and in your fingers) instantly. The cocoa butter in tempered chocolate has a melting point of about 32 Celsius, 5 degrees lower than the human body, and you can't hold it in your fingers for long. 

If you don't want this to happen, you will have to use something else. Cheap baking chocolate should be a good substitute - it also has a very high fat content, but it uses vegetable fat, not cocoa butter, and it is harder and less melty. Bar chocolate can work as well, but depending on which one you choose it will either have too much non-fat solids, or added fat of the wrong (soft) type. Depending on where you live, it can also be waxy - that is common for example in the USA. 

Distempered chocolate is grainy, sandy, and has bloom (a dirty white powdery covering). As long as you don't have them, your chocolate is fine, no matter which kind you took.