In Horizon, it is now possible to download any transaction for offline storage. The received data download includes the entire branch from the root transaction of a united transaction bush to the current transaction. The download is self-sufficient, despite its small size (up to 100kb). Access to the entire public network is not required for integrity checking. You can download a transaction from the page of each transaction in the operation monitor of the Horizon public network - https://ankhorizon.com. An example of a transaction - https://ankhorizon.com/transaction/e0188db5-5de4-4cf5-8469-96a257fc015b