• The prescan listed no files of its own; its author check scanned 111 files and found every copyright holder named in debian/copyright. I re-checked the holder list myself against every header in src/ and examples/ and found no holder outside the file (Yuki Kishimoto, Paul Miller, Thomas (0xtlt), Rust Nostr Developers, Nostr Dev Kit Developers).
• Licence evidence collected with grep over the whole tree (Copyright, (C), ©, SPDX-License-Identifier, Licensed under, GNU/Apache/MPL, public domain, All rights reserved): only MIT notices and one SPDX line, in src/nips/nip06/bip32.rs. The prescan's non-free-wording and built-file categories found nothing.
• src/nips/nip06/bip32.rs is the only non-MIT file, // SPDX-License-Identifier: CC0-1.0, and has its own stanza; the licence text is referenced from /usr/share/common-licenses/CC0-1.0, which is present on the reviewing system.
• Ten upstream .rs files have no per-file header (src/error.rs, src/util/ct_eq.rs, src/util/json.rs, src/util/sha256.rs, src/nips/util.rs, src/nips/nip01/tags.rs, src/event/signature.rs, src/nips/nip13/{blocking_wrapper,multi_thread,single_thread}.rs); each is compiled into the same crate, whose root LICENSE and Cargo.toml license = "MIT" cover them, so they are not unlicensed.
• src/nips/nip44/nip44.vectors.json is NIP-44 test-vector data (not generated code, no generator needed), covered by Files: *.
• debian/copyright is DEP-5 with the canonical Format URL, one catch-all, three specific Files stanzas (later ones override Files: * as intended), one stand-alone MIT paragraph and a CC0-1.0 paragraph; Files: debian/* covers the packaging.
• Dependencies checked with apt-cache: librust-aes-0.8+default-dev (0.8.4), librust-base64-0.22-dev (0.22.1), librust-bech32 (0.11.0), librust-bip39 (3.0.0), librust-bitcoin-hashes (1.0.0), librust-cbc-0.1+{alloc,default,std} (0.1.2), librust-chacha20-0.9+{default,std} (0.9.1), librust-chacha20poly1305-0.10+{alloc,std} (0.10.1), librust-faster-hex (1.0.0), librust-opaquerr (0.2.0), librust-rand 0.10.3+ds (provides +alloc/+std/+sys-rng), librust-scrypt (0.12.0), librust-secp256k1 (0.33.1), librust-unicode-normalization (0.1.26), librust-universal-time (0.3.1), librust-url (2.5.8), librust-zeroize (1.9.0), and the autopkgtest-only librust-reqwest-0.12+rustls-tls-dev and librust-tokio+macros-dev all exist.
• Build-Depends-Arch names exactly what the default feature set (std -> alloc) needs plus the optional-feature entries carried by alloc/std; aes, scrypt, cbc+default, chacha20+default and rand+sys-rng are absent because dh-cargo's test step (/usr/share/perl5/Debian/Debhelper/Buildsystem/cargo.pm, sub test) runs plain cargo build, i.e. default features only. The autopkgtests get those packages through @, which the autopkgtest specification expands to the binary package generated by the source package, i.e. librust-nostr-dev and its Depends.
• Patches: three, all with Description/Forwarded/Author/Last-Update; 0001 relaxes bech32, bip39, bitcoin_hashes, faster-hex and secp256k1 minimums to the versions the archive has (bech32 0.11, bip39 3.0, bitcoin-hashes 1.0, faster-hex 1.0, secp256k1 0.33), and 0002/0003 adapt the code to the secp256k1 0.33 and faster-hex 1.0 APIs that are the only versions packaged, so the widened ranges resolve to versions the patched code targets.
• Every non-@ autopkgtest carries Restrictions: allow-stderr, flaky, which is debcargo's marker for the test_is_broken settings in debian/debcargo.toml; the all-features run is the one left unmarked, and the tests still execute.
• Standards-Version 4.7.4 equals the Policy version on the reviewing system (A10 lists 4.7.4 as the newest), so it is current. Vcs-Git/Vcs-Browser point at debcargo-conf src/nostr, matching X-Cargo-Crate nostr.
• Tree contains no build artifacts, vendored third-party crates or binaries; .pc/ and debian/cargo-checksum.json were left out as instructed.
• uscan found the packaged version as the newest upstream release (upstream 0.45.6, packaged 0.45.6).
• Every pointer of debian/copyright to /usr/share/common-licenses names a file that is there (CC0-1.0).

• Whether the feature-gated code compiles against the versions the archive has for the two crates whose upstream target differs most: bip39 3.0.0 (upstream asks 2.1) and bech32 0.11.0 (upstream asks 0.12). No crate sources are installed under /usr to compare APIs, and the build only compiles the default feature set, so a mismatch would show up only in the all-features autopkgtest.
• Whether an ITP bug exists for rust-nostr: the changelog closes none (* Package nostr 0.45.6 from crates.io using debcargo 2.8.3), which is what debcargo's template produces.

None.