OCS: Attestations: Adding files

[neatonk]

Overview

When adding files, we want to capture authorship details and associate them with the work with minimal friction. This is done by creating an onchain attestation using the schema below:

string title,             // a short title
string metadataUri,       // uri for additional metadata
address[] authors,        // array of author addresses (ethereum)
bytes32[] contentHashes,  // sha256 hash of each file

Notes:

• Each file is stored offchain and may be public or private.
• Limit the number of characters in the title to keep gas costs down.
• The metadataUri (if provided) would refer to a JSON file stored offchain and could include description, "authorship types" and more, none of which really benefits from being directly onchain.
• Schema will be deployed to Base mainnent.

Schema Deployments

• #282 on Base Sepolia (Old Version: ~#279 on Base Sepolia~)

Requirements

• User can select one or more files to add to a project.
• The user can provide a title for the batch of files.
• The user can provide a list of author addresses.
• The user can issue an attestation using the above schema with the provided title, author addresses, and the file hashes.

Optional:

• Author addresses are suggested based on the project members.
• User can provide additional details to be stored as JSON and referenced via the metadataUri field. Details include:
  • description text
  • authorship types (e.g. "sound recording", "words and music", etc.)
  • file URIs