Reviewed-By Trailer: Sovereign-Portable Peer-Review Attribution for Content-Hash-Bound Artefacts

This document defines a trailer grammar for sovereign-portable peer review as an extension of the identity-attributed commit grammar in [COMMITS]. The grammar introduces one required trailer (Reviewed- By:) and three optional companion trailers (Review-Stance:, Review- Of:, Witnessed-By:) that bind a Sovereign-tier ~handle to a specific act of review over a specific content artefact, cryptographically signed using the Ed25519 mechanism of [COMMITS]. The mechanism applies uniformly to git commits, document manifests, pre-prints, patent disclosures, and any other content-addressable artefact. Reviewer reputation accumulates on the sovereign handle rather than on a publisher's platform, making reviewer trust portable across journals, pre-print servers, and private review contexts. Pseudonymous review for anonymous peer-review processes is supported by permitting a Sovereign handle whose underlying party is concealed through out-of-band key custody, preserving full cryptographic verifiability of the review act without disclosing the reviewer's underlying identity. The grammar is positioned as complementary to CRediT [CREDIT], ORCID [ORCID], and DOI [DOI] attribution infrastructure, not as a replacement for them.