Add verified Cosmos3-Nano S1/S3 release bundle

Upload the evaluated S1 step-25000 and S3 EMA700 FP32 exports with matching metadata, checksums, licenses and finalized model card. DL3DV ours: 28 scored scenes, 9619 held-out frames; H100 80 GB BF16 inference.

SHA256SUMS

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+4f65503d77f27aa12ac1e6ca50c68320e52d2d9b184b48e13dd2e07c83d98544  artifixer-cosmos3-nano.metadata.json
+3e5a648411794413d91cc78131261eea51fdba54fa8789a5bb298e460f27725a  artifixer-cosmos3-nano.pt
+c7990466ad1f0a4a060e61ee54674d2d218605ec1bd652a1c4ddabc64e87cb83  artifixer-s1-cosmos3-nano.metadata.json
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+90238f0aa41aadd4b4fd65ddb15efbefc42291cf23adc81033c5d68d7567e745  licenses/NOTICE.txt
+4ff203c3f7997c7fed287a463d733f794934a79cfabb2936008fca0bcc8ad3d6  licenses/NVIDIA-OneWay-Noncommercial-License-22Mar2022.pdf
+be21b29b1c69af5b4a4e60a6bd7bc933eec374e52be29d1ebb9e6a17a6588491  licenses/OpenMDW-1.1.txt

artifixer-cosmos3-nano.metadata.json

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+{
+  "base_model_revision": "23314034b82f46b45339035dba67c3ee9bbcb8ba",
+  "camera_pose_alignment": "last",
+  "camera_ray_reference": "first",
+  "checkpoint": 700,
+  "commit": "60baa342ae0f049748cf1cbcb93384504d6dcbdf",
+  "export_date": "2026-10-21T04:47:41.238085+00:00",
+  "inference_pipeline": "kv_cache",
+  "model_id": "nvidia/Cosmos3-Nano",
+  "num_inference_steps": 4,
+  "run_id": "809a7f78",
+  "slot": "pytorch_model_fsdp_2",
+  "training_stage": "dmd",
+  "weight_type": "ema"
+}

artifixer-cosmos3-nano.pt

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+version https://git-lfs.github.com/spec/v1
+oid sha256:3e5a648411794413d91cc78131261eea51fdba54fa8789a5bb298e460f27725a
+size 63212165917

artifixer-s1-cosmos3-nano.metadata.json

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+{
+  "base_model_revision": "23314034b82f46b45339035dba67c3ee9bbcb8ba",
+  "camera_pose_alignment": "last",
+  "camera_ray_reference": "first",
+  "checkpoint": 25000,
+  "commit": "60baa342ae0f049748cf1cbcb93384504d6dcbdf",
+  "export_date": "2026-10-21T04:33:05.795365+00:00",
+  "inference_pipeline": "bidirectional",
+  "model_id": "nvidia/Cosmos3-Nano",
+  "num_inference_steps": 50,
+  "run_id": "836d8e9e",
+  "slot": "pytorch_model_fsdp_0",
+  "training_stage": "bidirectional",
+  "weight_type": "raw"
+}

artifixer-s1-cosmos3-nano.pt

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+version https://git-lfs.github.com/spec/v1
+oid sha256:9388aeb9bc1b3b6ff2d566c255c3a8308415d706f6d55477df335e879ae8d95c
+size 63212170125

licenses/NOTICE.txt

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+ArtiFixer Cosmos3-Nano S1 and S3 checkpoints
+
+Use of these models is governed by the NVIDIA License included in
+NVIDIA-OneWay-Noncommercial-License-22Mar2022.pdf.
+
+These models are based on NVIDIA Cosmos3-Nano, governed by the OpenMDW
+License Agreement, version 1.1, included in OpenMDW-1.1.txt.
+Base model: https://huggingface.co/nvidia/Cosmos3-Nano
+Base revision: 23314034b82f46b45339035dba67c3ee9bbcb8ba

licenses/OpenMDW-1.1.txt

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+OpenMDW License Agreement, version 1.1 (OpenMDW-1.1)
+
+By exercising rights granted to you under this agreement, you accept and agree to its terms.
+
+As used in this agreement, “Model Materials” means the materials provided to you under this agreement, consisting of: (1) one or more machine learning models (including architecture and parameters); and (2) all related artifacts (including associated data, documentation and software) that are provided to you hereunder.
+
+Subject to your compliance with this agreement, permission is hereby granted, free of charge, to deal in the Model Materials without restriction, including under all copyright, patent, database, and trade secret rights included or embodied therein.
+
+If you distribute any portion of the Model Materials, you shall retain in your distribution (1) a copy of this agreement, and (2) all copyright notices and other notices of origin included in the Model Materials that are applicable to your distribution.
+
+If you file, maintain, or voluntarily participate in a lawsuit against any person or entity asserting that the Model Materials directly or indirectly infringe any patent or copyright, then all rights and grants made to you hereunder are terminated, unless that lawsuit was in response to a corresponding lawsuit first brought against you.
+
+This agreement does not impose any restrictions or obligations with respect to any use, modification, or sharing of any outputs generated by using the Model Materials.
+
+THE MODEL MATERIALS ARE PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, NONINFRINGEMENT, ACCURACY, OR THE ABSENCE OF LATENT OR OTHER DEFECTS OR ERRORS, WHETHER OR NOT DISCOVERABLE, ALL TO THE GREATEST EXTENT PERMISSIBLE UNDER APPLICABLE LAW.
+
+YOU ARE SOLELY RESPONSIBLE FOR (1) CLEARING RIGHTS OF OTHER PERSONS THAT MAY APPLY TO THE MODEL MATERIALS OR ANY USE THEREOF, INCLUDING WITHOUT LIMITATION ANY PERSON’S COPYRIGHTS OR OTHER RIGHTS INCLUDED OR EMBODIED IN THE MODEL MATERIALS; (2) OBTAINING ANY NECESSARY CONSENTS, PERMISSIONS OR OTHER RIGHTS REQUIRED FOR ANY USE OF THE MODEL MATERIALS; OR (3) PERFORMING ANY DUE DILIGENCE OR UNDERTAKING ANY OTHER INVESTIGATIONS INTO THE MODEL MATERIALS OR ANYTHING INCORPORATED OR EMBODIED THEREIN.
+
+IN NO EVENT SHALL THE PROVIDERS OF THE MODEL MATERIALS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MODEL MATERIALS, THE USE THEREOF OR OTHER DEALINGS THEREIN.