| Internet-Draft | PSI-02 | October 2026 |
| Singh | Expires 16 April 2027 | [Page] |
This document defines PSI-02, a domain profile of Proof of Stateful Integrity (PSI) for measurement records supporting carbon sequestration claims, such as field sampling results, remote-sensing extracts, and calculation inputs. Each record is sealed as a PSI receipt so that later alteration, reordering, or removal is detectable. Only digests are sealed. PSI-02 shows integrity and ordering only; it does not show that the sequestration occurred, that a methodology was followed, or that any credit is valid.¶
Revision 00 carried this title over an abstract describing disability-services evidence. This revision makes the body match the title.¶
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This profile applies the receipt format of [PSI] to one record type. The key words "MUST", "MUST NOT", "SHOULD", and "MAY" in this document are to be interpreted as described in BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all capitals, as shown here.¶
A record is a JSON object that MUST contain the following members and MAY contain others:¶
The record holder computes the record digest per [PSI] and submits only the digest for sealing. Records SHOULD NOT contain personal data.¶
A verifier given a record and its receipt verifies the receipt per [PSI]. Verification reports digest match and signature validity only.¶
The considerations of [PSI] apply. A record that was false when sealed remains false; a record that was never sealed is not detected as missing unless records are chained.¶
This document has no IANA actions.¶