I’ve asked around and got some information about recept validation:
- GitHub - interledger/receipt-verifier: Handles ILP STREAM receipts · GitHub (Recommended)
- ilp-torrent/src/verifier-service at main · sabineschaller/ilp-torrent · GitHub
- https://wilsonianb.github.io/diagrams/receipts
“The receipt is an optional field in the monetizationprogress event. Receipts will only be present if a receipt verifier’s payment pointer is used. The web monetization sequence diagram shows how a receipt verifier fits into the flow.”