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@ -19,18 +19,16 @@ This page specifies metadata attributes that _must_ be included, and that _may_
The publisher publishes an asset DDO (including metadata) onto the chain. The publisher publishes an asset DDO (including metadata) onto the chain.
Asset DDO metadata is stored in plaintext by default. File URLs are stored encrypted on the chain. All metadata may be encrypted, though at a severe cost to discoverability.
The publisher may be the asset owner, or a marketplace acting on behalf of the owner. The publisher may be the asset owner, or a marketplace acting on behalf of the owner.
Most metadata fields may be modified after creation. The blockchain records the provenance of changes. Most metadata fields may be modified after creation. The blockchain records the provenance of changes.
DDOs (including metadata) are found in two places: DDOs (including metadata) are found in two places:
- _Remote_ - main storage, on-chain. Some fields are encrypted. - _Remote_ - main storage, on-chain. File URLs are always encrypted. One may actually encrypt all metadata, at a severe cost to discoverability.
- _Local_ - local cache. Example: Aquarius. All fields are in plaintext. - _Local_ - local cache. All fields are in plaintext.
Aquarius can be used to help read and write data to the chain. Its local cache has decrypted information that was encrypted on-chain. Ocean Aquarius helps manage metadata. It can be used to write DDOs to the chain, read from the chain, and has a local cache of the DDO in plaintext with fast search.
## Fields for Metadata ## Fields for Metadata