Function is_ctv_script 

pub fn is_ctv_script(script: &[u8]) -> bool

Spec-locked to Orange Paper Section 5.4.6: IsCtvScript

Function ‘IsCtvScript’ referenced but not yet in spec section 5.4 (Migration mode). Available: BIP119Check, Note, Validation, Mainnet Check if script uses CTV

Arguments

• script - The script to check

Returns

true if script contains OP_CHECKTEMPLATEVERIFY (0xba)