NativeScriptType

class cometa.scripts.native_scripts.native_script_type.NativeScriptType(value)[source]

Bases: IntEnum

Enumerates the different types of native scripts in Cardano.

Native scripts form an expression tree where each node evaluates to either true or false. The script type determines how the evaluation is performed.

REQUIRE_PUBKEY = 0

Requires a signature from a specific public key.

This script evaluates to true if the transaction includes a valid key witness where the witness verification key hashes to the given hash.

REQUIRE_ALL_OF = 1

Requires all sub-scripts to evaluate to true.

This script evaluates to true if all the sub-scripts evaluate to true. If the list of sub-scripts is empty, this script evaluates to true.

REQUIRE_ANY_OF = 2

Requires at least one sub-script to evaluate to true.

This script evaluates to true if any of the sub-scripts evaluate to true. If the list of sub-scripts is empty, this script evaluates to false.

REQUIRE_N_OF_K = 3

Requires at least N of K sub-scripts to evaluate to true.

This script evaluates to true if at least N (required field) of the sub-scripts evaluate to true.

INVALID_BEFORE = 4

Time-lock that activates at a specific slot.

This script evaluates to true if the lower bound of the transaction validity interval is greater than or equal to the specified slot.

INVALID_AFTER = 5

Time-lock that expires at a specific slot.

This script evaluates to true if the upper bound of the transaction validity interval is less than or equal to the specified slot.