Extension Maturity Classification: Proposal
Provides a way to specify file checksums (e.g. BLAKE2, MD5, SHA1, SHA2, SHA3) for assets and links in STAC Items, STAC Catalogs and STAC Collections. The hashes are self-identifying hashes as described in the Multihash specification.
Link Object and Asset Object fields
| Field Name | Type | Description |
|---|---|---|
| checksum:multihash | string | Multihash for the corresponding file, encoded as hexadecimal (base 16) string with lowercase letters. |
Checksum for a text file with file content test.
| Field Name | Algorithm | Example |
|---|---|---|
| checksum:multihash | sha1 (160 bits) | 1114a94a8fe5ccb19ba61c4c0873d391e987982fbbd3 |
| checksum:multihash | sha2 (256 bits) | 12209f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08 |
| checksum:multihash | sha2 (256 bits truncated to 160 bits) | 12149f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b |
| checksum:multihash | blake2b-128 | 90e4021044a8995dd50b6657a037a7839304535b |
None yet, still in proposal stage.