"Scriptless scripts" are cryptographic protocols that enable complex smart contracts to be executed on the Bitcoin network without the need for additional scripting capabilities. These protocols leverage advanced cryptographic techniques, such as zero-knowledge proofs and Schnorr signatures, to create secure and efficient ways for parties to interact and execute smart contracts without revealing sensitive information on the blockchain. By using scriptless scripts, more complex and versatile smart contracts can be implemented on the Bitcoin network while maintaining privacy, scalability, and security.