Terminology: Registry & Transparency Service

[SteveLasker]

Copied over from: ietf-scitt/draft-birkholz-scitt-architecture#38

The architecture I-D, and other docs use Registry and Transparency Service (TS) interchangeably.

This issue is about consistent naming, and what we should use for an implementation that hosts the SCITT standards.
As we've discussed various terms, I'm pasting a "thousand words" to highlight conceptual components.

How do we finish this sentence:
The user will submit a signed statement/claim (see issue #34) to the ___

1. The thing we're trying to name here, which is an implementation of a service.
2. The eNotary component that evaluates the Registration Policy (3) before proceeding
3. The Registration Policy, as the gatekeeper for what may be submitted to the ledger.
4. The eNotary counter signing key/service
5. The ledger, where statements/claims are persisted
6. The ledger of a ___ (1) may be implemented through various "ledger databases", such as Azure CCF, QLDB, Trillian

This issue is to discuss what we call (1)
Please "vote" with a comment, representing a number, and any supporting thoughts:

1. Transparency Service (with no acronym)
2. Registry
3. SCITT Implementation
4. Transparency Service (TS as a acronym)
5. write in your own

[fournet]

4. Transparency Service (TS as a acronym)

Please look at the existing terminology section before proposing global substitutions.

[henkbirkholz]

The substitution of TS to Transparency Services was due to comments that highlighted a possible confusion with Timestamp that might be not intuitive to the generic reader.

Maybe let us split that decision out to the list and then fix this with a %s/foo/bar/g?

[rjb4standards]

IMO a "Transparency Service" operates a SCITT Registry that contains authenticated statements expressing trust in an artifact. A SCITT Registry may employ multiple technologies to provide its services, i.e. blockchain ledger, relational database, evidence locker, REST API to query the Registry for statements, API's to submit new statements and evidence, etc. The operator of a Transparency Service serves as the Registry Gatekeeper to ensure the integrity of the Registry.

[SteveLasker]

Adding a link to a higher level overview @raylutz
assembled: https://docs.google.com/document/d/1qYljgugcraiamGjrhldQ1ZEoa4i_TkM3tzBg8yNzE_E/edit#

[SteveLasker]

#16 mostly converges on Transparency Service. However, #8 is also open as additional discussions commence.
I'm leaving open to keep discussions with all the history, including updates to @raylutz's doc.

[SteveLasker]

Assigning to @raylutz for confirmation and update.

[SteveLasker]

Closing, due to inactivity and #16 and #8 cover open topics.