[Openid-specs-ab] AB/C WG Pacific Meeting Notes (2025-08-04)

[george at practicalidentity.com]

Thanks Nat. Maybe the “trx” string in the notes is a typo and should instead be “txn”?

George Fletcher
Identity Standards Architect
Practical Identity LLC



> On Aug 5, 2025, at 9:06 PM, Nat Sakimura via Openid-specs-ab <openid-specs-ab at lists.openid.net> wrote:
> 
> As I understand, this proposal is to introduce the txn claim into ID Token, but I may be wrong. 
> 
> Nat Sakimura
> 
> 
> 2025年8月6日(水) 0:51 <george at practicalidentity.com <mailto:george at practicalidentity.com>>:
>> 
>> 
>>> On Aug 5, 2025, at 2:25 AM, Nat Sakimura via Openid-specs-ab <openid-specs-ab at lists.openid.net <mailto:openid-specs-ab at lists.openid.net>> wrote:
>>> 
>>> Transaction Identifier Claim
>>> Proposer: Dima Postnikov
>>> Background: trx Claim was removed from eKYC specification as too generic for identity assurance
>>> Use Case: Commercial ecosystems need to trace transactions after performance, especially for identity sharing
>>> Existing Work: References SEC events transaction identifier
>>> Proposal: Create a separate OpenID Connect specification to define usage in ID tokens
>>> Process: Michael offered to help create GitHub repository for the specification
>>> Precedent: Referenced unmet authentication requirements spec that defined only an error code
>>> 
>> How is this claim different from that being used in the OAuth Transaction Tokens spec as specified by the Security Event Token RFC 8417 section 2.2?
>> 
>> 
>>    "txn" (Transaction Identifier) Claim
>>       An OPTIONAL string value that represents a unique transaction
>>       identifier.  In cases in which multiple related JWTs are issued,
>>       the transaction identifier claim can be used to correlate these
>>       related JWTs.  Note that this claim can be used in JWTs that are
>>       SETs and also in JWTs using non-SET profiles.
>> 
>> 
>> 
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