{
  "schema": "studycommons.hero.provenance.v2",
  "asset_role": "Study Commons public Daily Read hero",
  "slug": "what-is-the-niagara-escarpment-caprock-cliffs-biosphere",
  "generation_id": "img-14ec4107df0feb1707704351",
  "generator": "QwenImage21Pipeline",
  "model": "Qwen/Qwen-Image-2.1-Turbo",
  "model_revision": "fc13ba1986fcb905854dc8de2f52eee395f49b5b",
  "model_license": "Qwen Research License, non-commercial research/evaluation only; commercial use requires separate permission",
  "model_index_sha256": "97e2febeb19d93cb41fa44807cde8bd42757950b5dffeacdb0331fb2d390cf20",
  "checkpoint_sha256": "37230cd77d377c0be0acc06d628fd8a6e978e23eb2c530b73fa98df54ef62557",
  "renderer_source_sha256": "9668ef4c512a6a71ad2a84ae250b936f143c43d321d1e5dd93967307d41edea2",
  "prompt": "Expansive realistic landscape of Ontario's Niagara Escarpment near the Bruce Peninsula: long exposed pale grey dolostone cliffs with horizontal natural rock ledges and steep forested slopes, dense autumn-red and green trees below and a soft blue Lake Huron shoreline in the distance. Distinct rocky ridge and resistant caprock, glacially shaped hills, wide atmospheric travel editorial photography, not Niagara Falls, no map, no people, no manmade buildings. Full-bleed wide 16:9 photorealistic editorial illustration for a Canadian Grade 3–5 reading article. Real-world proportions, plausible anatomy and physics, emotionally warm and visually clear. No text, labels, lettering, symbols, diagrams, logos, watermarks, collage, white border, or split panels.",
  "prompt_sha256": "3acc9abdbd7afc43ca2f16342778e9c92b9cfa15e7fcd8c0390eb9b84689d10f",
  "negative_prompt": "",
  "seed": 2026111012,
  "width": 1312,
  "height": 736,
  "num_inference_steps": 8,
  "true_cfg_scale": 1.0,
  "scheduler": "FlowMatchEulerDiscreteScheduler",
  "sampling": "explicit-checkpoint-8-sigma",
  "sample_sigmas": [
    1.0,
    0.978453,
    0.95418,
    0.926626,
    0.89508,
    0.845148,
    0.704534,
    0.414568
  ],
  "generator_device": "cpu",
  "generator_algorithm": "torch.Generator('cpu').manual_seed(seed)",
  "torch_dtype": "bfloat16",
  "cpu_offload": "model",
  "use_kv_cache": true,
  "vae_tiling": true,
  "lora": null,
  "reference_images": [],
  "gpu": "NVIDIA CUDA (hardware-specific machine details withheld)",
  "runtime": {
    "torch": "2.13.0+cu130",
    "diffusers": "0.41.0",
    "transformers": "5.17.0",
    "cuda": "13.0"
  },
  "job_completed_at": "2026-11-10T14:24:14.987331+00:00",
  "output_png_sha256": "14ec4107df0feb170770435109ae0a4cbaac191063414a59540ab64e146d42da",
  "output_png_dimensions": [
    1312,
    736
  ],
  "postprocess": {
    "format": "AVIF",
    "ffmpeg_version": "ffmpeg version 6.1.1-3ubuntu5 Copyright (c) 2000-2023 the FFmpeg developers",
    "filter": "scale=1280:720:force_original_aspect_ratio=increase:flags=lanczos,crop=1280:720",
    "encoder": "libaom-av1",
    "still_picture": 1,
    "crf": 16,
    "bitrate": "0",
    "cpu_used": 6,
    "pix_fmt": "yuv420p",
    "frames": 1,
    "source_png_sha256": "14ec4107df0feb170770435109ae0a4cbaac191063414a59540ab64e146d42da",
    "output_avif_sha256": "f46ea3cf28981877f8b72ae4d61608db1ea0a0df76ae8865b9e4e312cbbc8c7d",
    "output_avif_width": 1280,
    "output_avif_height": 720,
    "output_avif_bytes": 174957
  },
  "reproduce": {
    "recipe": "QwenImage21Pipeline.from_pretrained(model_path, dtype=torch.bfloat16); enable_model_cpu_offload(); vae.enable_tiling(); pipeline(prompt=prompt, width=width, height=height, true_cfg_scale=1.0, num_inference_steps=8, sigmas=sample_sigmas, use_kv_cache=True, generator=torch.Generator('cpu').manual_seed(seed)); encode PNG to AVIF using postprocess fields",
    "model_source": "Hugging Face model ID and exact model_revision above, subject to the stated license",
    "verification": "Compare generated PNG and AVIF against SHA-256 fields. Accelerator and software differences may prevent bit-for-bit equality."
  },
  "provenance_note": "Generation parameters and cryptographic integrity chain, not proof of legal ownership or absence of third-party rights. Private machine paths are excluded."
}