I've written a couple of medium posts about the PAKET L1 scheme for cryptographically funding and insuring deliveries in a decentralized fashion. The first is a platform agnostic general explanation of how the scheme works, and second drills down into our specific implementation on the Stellar distributed ledger. I'd love to get your feedback!
General explanation: https://medium.com/paket-global/the-paket-scheme-5bd31efd531a
Stellar implementation: https://medium.com/paket-global/the-paket-scheme-on-stellar-160960237bb2