can be used to optionally allow the bundler to find receipts for the operations. These receipts aren't of much use internally (as they can't directly be trusted), but these capabilities can still be exposed to consumers of the API.
The general idea is:
Add an operationReceipt API method.
It takes an operation hash and uses IPFS (or the internal mempool) to find the contents of the operation.
The following ERC (number not assigned yet):
https://github.com/ethereum/ERCs/pull/318
can be used to optionally allow the bundler to find receipts for the operations. These receipts aren't of much use internally (as they can't directly be trusted), but these capabilities can still be exposed to consumers of the API.
The general idea is:
operationReceiptAPI method.