Is there any software available in the market to create copy-protected discs,so that none can burn it again?

Sorry, your only option is encryption at this point. However, if you go through the copyright process with the government you can claim damages for any who tamper with your data. It is difficult but doable. In the meanwhile, even with a copyright you will need to encrypt in order to keep others from tampering. Now, you can use a read only disk. Then they can read what is on it but they can not write from it to another CD. Just go in and click on Properties, then check the "read only" box. That way they can read but not write.

If you want a disk that cannot be rewriten the use a CD-R or DVD-R. It can be written to once. Then put them in a safe place away from the computer. If someone tries to write on them again, the computer will tell them it can't be written to and insert a new disk.

alcohol 120%

try an encrypting program.

Nope there's not yet....!