• Read debian/copyright in full: DEP-5 with the exact 1.0 Format URL, Files: * (MIT, 2021 Greg Heartsfield) and Files: debian/* (MIT), and a stand-alone MIT License paragraph; the text matches upstream LICENSE.
• Grepped the whole tree (gitignore: false, .pc and debian excluded) for Copyright, (C), ©, SPDX-License-Identifier, Licensed under, Permission is hereby granted, GNU GPL/LGPL, Apache, MPL, public domain, All rights reserved, non-commercial: the only hits are in LICENSE. No other LICENCE/COPYING/NOTICE/AUTHORS file exists.
• src/nauthz.rs is hand-written and uses tonic::include_proto!; the protobuf code is generated at build time from proto/nauthz.proto by build.rs, so no generated source without its input is shipped.
• The only build-generated files are the two man pages (debian/clean removes them); their markdown sources are in debian/man/, and the man sources carry a fixed date, so the generation is deterministic.
• debian/ files read in full: changelog, control, rules, clean, install, service, sysusers, preset, README.Debian, docs, examples, manpages, lintian-overrides, debcargo.toml, tests/control, upstream/metadata, source/format, patches/series and all nine patch headers. All patches carry DEP-3 Description/Author/Forwarded/Last-Update.
• The /etc/nostr-rs-relay/config.toml installed by dh_install is registered as a dpkg conffile automatically: dh_installdeb registers every file under the package's etc/ (checked in /usr/bin/dh_installdeb, "Automatic conffiles registration: If it is in /etc, it is a conffile"), so README.Debian's claim is correct.
• dh_installsysusers is not in the dh sequence at compat 13, but the dh-sequence-installsysusers Build-Depends (provided by debhelper 14.5) adds it; sysusers 'u' implicitly creates the same-name group (sysusers.d(5)), so the unit's User= is created at install.
• Build/runtime package names checked with apt-cache: dh-cargo 34 provides dh-sequence-cargo (autopkgtest needs >= 33~); librust-tonic-prost-{0.14,build-0.14}+default-dev are provided by librust-tonic-dev/librust-tonic-build-dev; protobuf-compiler comes in through librust-prost-build-dev's Depends, so build.rs's protoc call is satisfied; Debian's librust-rusqlite-dev provides the +limits/+modern-sqlite/+trace features used.
• Standards-Version 4.7.4 against Policy 4.7.4.1: current (first two components). Testsuite: autopkgtest is added to the .dsc by dpkg automatically (policy 5.6.30), so its absence from debian/control is not a fault.
• Manual pages exist for both shipped binaries (nostr-rs-relay.1 and bulkloader.1) and the unit's Documentation=man:nostr-rs-relay(1) is valid; the unit installs to /usr/lib/systemd/system and the preset to /usr/lib/systemd/system-preset, matching debhelper 13 and sysusers.d conventions.
• The lintian override for the libyaml embedded-library tag is plausible: config is built with its default features, so yaml-rust2 is linked in and emits the libyaml error strings; no C libyaml is present.
• Prescan author check reported no holder missing from debian/copyright; the tree carries no per-file notices, so the single upstream holder is the complete evidence.
• uscan found the packaged version as the newest upstream release (upstream 0.8.12, packaged 0.8.12).

• The patch headers' Origin: upstream/Origin: backport claims cannot be checked against upstream's history from the package alone; only the DEP-3 fields themselves were verified.
• File modes are not visible to the read-only tools used, so whether debian/nostr-rs-relay.install is executable (needed for its dh-exec shebang to be run) would only be proven by a build; the package is assumed to build.

None.