// ACC-Custody: 资产托管协议
// NAC 原生协议 - Charter 语言定义
// UID: nac.acc.ACCCustodyProtocol.v1

protocol ACCCustodyProtocol {
    // 创建托管记录
    fn create_custody(
        asset_id: Hash, owner: Address, custodian: Address,
        custody_type: CustodyType, constitutional_receipt: Hash
    ) -> Result<Hash, Error>;
    // 转移托管人
    fn transfer_custody(
        custody_id: Hash, new_custodian: Address, constitutional_receipt: Hash
    ) -> Result<(), Error>;
    // 释放托管
    fn release_custody(custody_id: Hash, constitutional_receipt: Hash) -> Result<(), Error>;
    // 查询托管记录
    fn get_custody(custody_id: Hash) -> Option<CustodyRecord>;
    // 查询资产的所有托管记录
    fn get_asset_custodies(asset_id: Hash) -> Vec<CustodyRecord>;
}