1. Transport-aware stego encoding: --transport flag (whatsapp/signal/
telegram/discord/email/direct) auto-selects DCT mode, pre-resizes
carrier to platform max dimension, prevents payload destruction
by messaging app recompression.
2. Standalone verification bundle: chain export ZIP now includes
verify_chain.py (zero-dep verification script) and README.txt
with instructions for courts and fact-checkers.
3. Channel-key-only export/import: export_channel_key() and
import_channel_key() with Argon2id encryption (64MB, lighter
than full bundle). channel_key_to_qr_data() for in-person
QR code exchange between collaborators.
4. Duress/cover mode: configurable SSL cert CN via cover_name
config (defaults to "localhost" instead of "SooSeF Local").
SOOSEF_DATA_DIR already supports directory renaming. Killswitch
PurgeScope.ALL now self-uninstalls the pip package.
5. Identity recovery from chain: find_signer_pubkey() searches chain
by fingerprint prefix. append_key_recovery() creates a recovery
record signed by new key with old fingerprint + cosigner list.
verify_chain() accepts recovery records.
6. Batch verification: /verify/batch web endpoint accepts multiple
files, returns per-file status (verified/unverified/error) with
exact vs perceptual match breakdown.
7. Chain position proof in receipt: verification receipts (now
schema v3) include chain_proof with chain_id, chain_index,
prev_hash, and record_hash for court admissibility.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
7967d4b419