Function merkle_add 

pub(crate) fn merkle_add(
    ctx: FunctionEnvMut<'_, Env>,
    ptr: WasmPtr<u8>,
    ptr_len: u32,
) -> i64

Add data to an on-chain Merkle tree.

Expects:

• db_info: Handle where the Merkle tree is stored
• db_roots: Handle where all new Merkle roots are stored
• root_key: Serialized key pointing to latest root in db_info
• tree_key: Serialized key pointing to the Merkle tree in db_info
• coins: Items we want to add to the Merkle tree

Permissions

• ContractSection::Update