<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body style="overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><br>
<div><br><blockquote type="cite"><div>On Aug 5, 2025, at 2:25 AM, Nat Sakimura via Openid-specs-ab <openid-specs-ab@lists.openid.net> wrote:</div><br class="Apple-interchange-newline"><div><h3 dir="ltr" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant-caps: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; line-height: 1.38; margin-top: 14pt; margin-bottom: 4pt;"><span style="font-size: 13pt; font-family: Arial, sans-serif; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;">Transaction Identifier Claim</span></h3><ul style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; margin-top: 0px; margin-bottom: 0px;"><li dir="ltr" style="list-style-type: disc; font-size: 11pt; font-family: Arial, sans-serif; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline; white-space: pre;"><p dir="ltr" role="presentation" style="line-height: 1.38; margin-top: 12pt; margin-bottom: 0pt;"><span style="font-size: 11pt; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;">Proposer:</span><span style="font-size: 11pt; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;"> Dima Postnikov</span></p></li><li dir="ltr" style="list-style-type: disc; font-size: 11pt; font-family: Arial, sans-serif; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline; white-space: pre;"><div style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 11pt; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;">Background:</span><span style="font-size: 11pt; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;"> trx Claim was removed from eKYC specification as too generic for identity assurance</span></div></li><li dir="ltr" style="list-style-type: disc; font-size: 11pt; font-family: Arial, sans-serif; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline; white-space: pre;"><div style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 11pt; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;">Use Case:</span><span style="font-size: 11pt; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;"> Commercial ecosystems need to trace transactions after performance, especially for identity sharing</span></div></li><li dir="ltr" style="list-style-type: disc; font-size: 11pt; font-family: Arial, sans-serif; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline; white-space: pre;"><div style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 11pt; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;">Existing Work:</span><span style="font-size: 11pt; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;"> References SEC events transaction identifier</span></div></li><li dir="ltr" style="list-style-type: disc; font-size: 11pt; font-family: Arial, sans-serif; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline; white-space: pre;"><div style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 11pt; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;">Proposal:</span><span style="font-size: 11pt; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;"> Create a separate OpenID Connect specification to define usage in ID tokens</span></div></li><li dir="ltr" style="list-style-type: disc; font-size: 11pt; font-family: Arial, sans-serif; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline; white-space: pre;"><div style="line-height: 1.38; margin-top: 0pt; margin-bottom: 0pt;"><span style="font-size: 11pt; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;">Process:</span><span style="font-size: 11pt; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;"> Michael offered to help create GitHub repository for the specification</span></div></li><li dir="ltr" style="list-style-type: disc; font-size: 11pt; font-family: Arial, sans-serif; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline; white-space: pre;"><p dir="ltr" role="presentation" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 12pt;"><span style="font-size: 11pt; background-color: transparent; font-weight: 700; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;">Precedent:</span><span style="font-size: 11pt; background-color: transparent; font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; vertical-align: baseline;"> Referenced unmet authentication requirements spec that defined only an error code</span></p></li></ul></div></blockquote></div>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?<div><br><div><br></div><div><pre class="newpage" style="font-size: 16px; box-sizing: border-box; font-family: "Noto Sans Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; margin-top: -1.25em; margin-bottom: 0px; overflow: visible; padding: 0px; width: 80ch; text-wrap-mode: wrap; color: rgb(32, 37, 42); font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"> "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.</pre><pre class="newpage" style="font-size: 16px; box-sizing: border-box; font-family: "Noto Sans Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; margin-top: -1.25em; margin-bottom: 0px; overflow: visible; padding: 0px; width: 80ch; text-wrap-mode: wrap; color: rgb(32, 37, 42); font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><br></pre><pre class="newpage" style="font-size: 16px; box-sizing: border-box; font-family: "Noto Sans Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; margin-top: -1.25em; margin-bottom: 0px; overflow: visible; padding: 0px; width: 80ch; text-wrap-mode: wrap; color: rgb(32, 37, 42); font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><br></pre><pre class="newpage" style="font-size: 16px; box-sizing: border-box; font-family: "Noto Sans Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; margin-top: -1.25em; margin-bottom: 0px; overflow: visible; padding: 0px; width: 80ch; text-wrap-mode: wrap; color: rgb(32, 37, 42); font-variant-ligatures: normal; orphans: 2; widows: 2; background-color: rgb(255, 255, 255); text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;"><br></pre></div></div></body></html>