| skylog/core | Package core contains code for a scalable Merkle tree construction. |
| skylog/storage | Package storage contains Skylog storage API and helpers. |
| skylog/storage/gcp | |
| skylog/storage/gcp/cloudspanner | Package cloudspanner provides implementation of the Skylog storage API in Cloud Spanner. |
| skylog/storage/gcp/gcppb | Package gcppb contains proto messages for GCP-based Skylog storage. |
| skylog/storage/gcp/pubsub | Package contains a binary that sends Merkle tree building jobs to a collection of workers through a GCP Pub/Sub topic. |