Check if a certain PolicyId is burning only if exists in the minted value.

let is_policy_only_burn = check_policy_only_burn(minted_value, policy);

Check if the minted value contains only one distinct asset with particular PolicyId.

let is_only_minted_token = only_minted_token(minted_value, policy, name, quantity);

Check if the minted value contains a token with particular PolicyId, AssetName, and quantity.

let is_token_minted = token_minted(minted_value, policy, name, quantity);