Release 4.4.0

SN34's earlier identity: Filed under SN34 from a source its on-chain identity named before. The identity has changed and no longer names this source, so the item is not listed as news of the subnet on SN34 now.

Summary Fix generator reward logic for sharper penalties when generative miners stop responding to queries Improve media format detection with proper ftyp-based MP4 detection and support for additional formats Fix file format handling - detect actual format from magic bytes instead of hardcoding extensions/content-types Add dynamic escrow address fetching from the API with fallback to defaults Add prompt modality tracking to ensure prompts are matched to their intended modality Add prompt cache cleanup to delete prompts after use, preventing unbounded cache growth Add detailed error responses for generative callback failures so miners can debug issues Add webhook stats tracking for miners to monitor success/failure rates per validator Add C2PA verification CLI for testing C2PA credentials on local files Remove LocalService from registry (since it doesn't produce C2PA-signed content) Changes Generator Miner Rewards Fix Fixed bug where include_all=True was double-counting already-rewarded media in verification stats Changed reward eligibility from union to intersection: miners must now have both local verified submissions and benchmark results to receive rewards Changed base reward default from 1e-4 to 0 for generators without verified submissions Increased EMA alpha from 0.2 to 0.5 for more aggressive score decay on inactive miners Added hard cutoff to zero out scores for generators not active within the liveness window Media Format Detection (#311) Fixed MP4 detection by checking for ftyp at offset 4 instead of hardcoded box sizes Consolidated all ftyp-based format detection to fix unreachable M4A code path Added support for new image formats: HEIC/HEIF, AVIF, GIF, BMP, TIFF Added support for new video formats: MOV, 3GP, AVI Added support for audio formats: MP3, WAV, FLAC, OGG, M4A Added length checks to prevent index errors on short data Improved JPEG detection with 3-byte signature Dynamic Escrow Addresses (#322) Added new get_escrow_addresses() function to fetch

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