AUTHOR/DESCRIPTION
, a cryptographic top-hash (or hash of hashes) that uniquely identifies package contents, and a backing manifest.(LOGICAL_KEY, PHYSICAL_KEYS, HASH, METADATA)
"README.md"
. Physical keys are fully qualified paths to bytes on disk, or bytes in S3. A hash is a digest of the physical key's contents, usually SHA-256. Metadata are a dictionary that may contain user-defined keys for metadata like bounding boxes, labels, or provenance information (e.g. {"algorithm_version": "4.4.1"} to indicate how a given file was created).