H.U.M.A.N

Draft working store for Project H.U.M.A.N. (High Utility Molecular Affinity Nexus): Dual Personality Fragment (DPF) trajectories, PDB-cluster static structures.

Trajectories are derived from ATLAS. Structures are PDB entries. Encoder inputs are OpenFold recycle-3 embeddings of AlphaFold2. If you use this data, cite the sources below.

Catalog member paths are rooted at /workspace/rbase_data.

The ensemble, moving

Every conformation submitted for CASP17 target E2460, played one at a time and coloured by per-residue confidence on the AlphaFold pLDDT bands: dark blue above 90, light blue 90-70, orange 70-50, yellow below 50. Domain 1 holds its shape across the whole ensemble while domain 2 swings; the tag and the termini are where confidence falls away.

Layout

path	what
Dual Personality Fragments/	86 ATLAS DPF families: 81 with protein/<id>.pdb + replica XTCs; 5 test families are topology-only PDBs
DPF_folding_repr/	OpenFold recycle-3 representations for the 81 train+val DPF sequences
run/splits/0.json	DPF family split (76 train / 5 val / 5 test)
catalog.json	DPF catalog (86 families)
PDB_Clusters/	Static PDB members used by the cluster fine-tune
PDB_Cluster_folding_rep/	OpenFold recycle-3 representations for the cluster families (4,831 files)
TrainSplit_pdbcluster.json	Cluster family split (1,442 train / 168 val / 68 test)
pdbcluster_catalog.json	Cluster catalog (1,678 families)
confrover_base/	Published base weights file confrover_base_20m_v1_0.pt (ConfRover-base-20M-v1.0)
confrover_base_atlas_train_ids.csv	1,080 ATLAS IDs already in the published base train set (excludelist)
Run 1 PDBCluster_from base weights checkpoints/	Full PDB-cluster-from-base checkpoint set (70 files)
Run 2 DPF_from Clusterbase checkpoints/	Best total/iid and best forward checkpoints from DPF-on-cluster-weights
Run 3 DPF from base weights checkpoints/	Best total, forward, and iid checkpoints from DPF-from-base
Run 4 Reverse time from DPFBase checkpoints/	Best total/forward and best iid checkpoints from reverse-time DPF
code/	RBase.tar.gz plus COMMIT
bundles/	Packed cluster PDBs (pdbc.tar.gz)
compare_training_runs_1_to_4.png	Overlay of Runs 1–4 (train / val / learning rate)
E2460_conformer_cloud_demo.mp4	Screen capture of the interactive viewer, stepping through all 1,000 submitted conformations
MANIFEST.sha256	Digests for the DPF payload files
CASP17 E2460 Submit/	The 1,000-conformation ensemble submitted for CASP17 target E2460, CASP identifiers removed

The five DPF test families keep topologies so the split fingerprint stays valid; fit never loads their trajectories.

Training curves

Runs 1–4 on a shared optimizer-step axis.

Box-run checkpoints

Four sequential box runs. Run 3 does not continue Run 2; it fine-tunes the published base in parallel with Run 1. Run 4 starts from Run 3's best-forward export.

folder	started from	what is stored
Run 1 PDBCluster_from base weights checkpoints/	published base	entire Run 1 checkpoint set
Run 2 DPF_from Clusterbase checkpoints/	Run 1 export at step 8364	dpf-bestfwd-step00008296.ckpt (best total and iid val) and dpf-bestfwd-step00035764.ckpt (best forward val)
Run 3 DPF from base weights checkpoints/	published base	dpfbase-stopped-step00005550.ckpt (best total), dpfbase-bestfwd-step00005722.ckpt (best forward), dpfbase-epoch008-step00002500.ckpt (nearest save to best iid)
Run 4 Reverse time from DPFBase checkpoints/	Run 3 export at step 5722	dpfrev4-bestfwd-step00000250.ckpt (best total and forward) and dpfrev4-bestfwd-step00000125.ckpt (best iid)

Those three val numbers are 9-frame windows.

Training notes

Practitioner notes from the four box runs. These are working observations that shaped the runs, not measured results from the evaluation suite.

Window size is hardware-bound, not method-bound. Training at 9 frames per protein per step holds one RTX PRO 6000 at 80-90 % utilisation with 128 GB of system RAM. Budget roughly one 6000 Pro Max-Q per 10 frames, which puts about 10 frames at the practical ceiling for a single card. More frames per window improves quality on large .XTC trajectory datasets, so the short window is a concession to hardware rather than a judgement that 9 frames is enough.

Epoch count compensates for the short window. Each epoch draws a different set of frames, so the frames a family contributes are re-sampled every pass. Total frame coverage therefore keeps growing with epochs even though the per-step window is fixed, which is why these runs use a large epoch count rather than a longer window.

20M parameters is a real capacity ceiling. At this size catastrophic forgetting is a live constraint and the network's ability to retain information across sequential fine-tuning stages is limited. That bounds how much a later stage can add before it starts displacing what the base model already holds. However inference can run on a single 4060 with 30GB(total used by system on Windows 11) of 128DDR5 generating around 250-1000 conformations in 3-4h depending on complexity. No results have been medically verified.

Reverse-time training cancels itself out unmodified. Run plainly, time-reversal training restores the previous weights: the reversed gradients undo the forward optimisation instead of adding to it. Run 4 behaves this way -- its forward validation loss never improved on step 250 across the remaining 1,935 steps and eight epochs, and its two bestfwd checkpoints both fall in the first epoch. The modified form takes the original optimizer state, compares it against the most likely negative value and adjusts the optimizer accordingly. It is very compute-heavy, but it is the route by which a limited training set might be made to go further.

Use

hf download AICanada/H.U.M.A.N --repo-type dataset --local-dir /workspace/rbase_data
python scripts/verify_remote_payload.py --root /workspace/rbase_data

From an RBase checkout: DPF scripts/vast_bootstrap_dpf.sh, cluster scripts/vast_bootstrap_pdbcluster.sh.

Citation

ATLAS

DPF trajectories in Dual Personality Fragments/ are derived from ATLAS.

Vander Meersche, Y., Cretin, G., Gheeraert, A., Gelly, J. C., & Galochkina, T. (2024). ATLAS: protein flexibility description from atomistic molecular dynamics simulations. Nucleic Acids Research, 52(D1), D384–D392. doi:10.1093/nar/gkad1084

@article{atlas2024,
  title={ATLAS: protein flexibility description from atomistic molecular dynamics simulations},
  author={Vander Meersche, Yann and Cretin, Gabriel and Gheeraert, Aria and Gelly, Jean-Christophe and Galochkina, Tatiana},
  journal={Nucleic Acids Research},
  volume={52},
  number={D1},
  pages={D384--D392},
  year={2024},
  doi={10.1093/nar/gkad1084}
}

PDB

Cluster members and DPF reference structures are Protein Data Bank entries.

Berman, H. M., Westbrook, J., Feng, Z., Gilliland, G., Bhat, T. N., Weissig, H., Shindyalov, I. N., & Bourne, P. E. (2000). The Protein Data Bank. Nucleic Acids Research, 28(1), 235–242. doi:10.1093/nar/28.1.235

wwPDB consortium (2019). Protein Data Bank: the single global archive for 3D macromolecular structure data. Nucleic Acids Research, 47(D1), D520–D528. doi:10.1093/nar/gky949

@article{berman2000pdb,
  title={The {Protein Data Bank}},
  author={Berman, Helen M. and Westbrook, John and Feng, Zukang and Gilliland, Gary and Bhat, T. N. and Weissig, Helge and Shindyalov, Ilya N. and Bourne, Philip E.},
  journal={Nucleic Acids Research},
  volume={28},
  number={1},
  pages={235--242},
  year={2000},
  doi={10.1093/nar/28.1.235}
}

@article{wwpdb2019,
  title={{Protein Data Bank}: the single global archive for {3D} macromolecular structure data},
  author={{wwPDB consortium}},
  journal={Nucleic Acids Research},
  volume={47},
  number={D1},
  pages={D520--D528},
  year={2019},
  doi={10.1093/nar/gky949}
}

UniProt

UniProt Consortium (2025). UniProt: the Universal Protein Knowledgebase in 2025. Nucleic Acids Research, 53(D1), D609–D617. doi:10.1093/nar/gkae1010

@article{uniprot2025,
  title={{UniProt}: the {Universal Protein Knowledgebase} in 2025},
  author={{UniProt Consortium}},
  journal={Nucleic Acids Research},
  volume={53},
  number={D1},
  pages={D609--D617},
  year={2025},
  doi={10.1093/nar/gkae1010}
}

OpenFold

Encoder representations are OpenFold recycle-3 embeddings.

Ahdritz, G., Bouatta, N., Floristean, C., et al. (2024). OpenFold: retraining AlphaFold2 yields new insights into its learning mechanisms and capacity for generalization. Nature Methods, 21, 1514–1524. doi:10.1038/s41592-024-02272-z

@article{ahdritz2024openfold,
  title={{OpenFold}: retraining {AlphaFold2} yields new insights into its learning mechanisms and capacity for generalization},
  author={Ahdritz, Gustaf and Bouatta, Nazim and Floristean, Christina and others},
  journal={Nature Methods},
  volume={21},
  pages={1514--1524},
  year={2024},
  doi={10.1038/s41592-024-02272-z}
}

AlphaFold

OpenFold implements AlphaFold2.

Jumper, J., Evans, R., Pritzel, A., et al. (2021). Highly accurate protein structure prediction with AlphaFold. Nature, 596(7873), 583–589. doi:10.1038/s41586-021-03819-2

@article{jumper2021alphafold,
  title={Highly accurate protein structure prediction with {AlphaFold}},
  author={Jumper, John and Evans, Richard and Pritzel, Alexander and others},
  journal={Nature},
  volume={596},
  number={7873},
  pages={583--589},
  year={2021},
  doi={10.1038/s41586-021-03819-2}
}

ConfRover

Published base weights ConfRover-base-20M-v1.0. and original inference code at https://github.com/ByteDance-Seed/ConfRover,
https://huggingface.co/papers/2505.17478, https://arxiv.org/abs/2505.17478,

@article{confrover2025,
  title={Simultaneous Modeling of Protein Conformation and Dynamics via Autoregression},
  author={Shen, Yuning and Wang, Lihao and Yuan, Huizhuo and Wang, Yan and Yang, Bangji and Gu, Quanquan},
  journal={arXiv preprint arXiv:2505.17478},
  year={2025}
}

Attribution-NonCommercial 4.0 International

=======================================================================

Creative Commons Corporation ("Creative Commons") is not a law firm and does not provide legal services or legal advice. Distribution of Creative Commons public licenses does not create a lawyer-client or other relationship. Creative Commons makes its licenses and related information available on an "as-is" basis. Creative Commons gives no warranties regarding its licenses, any material licensed under their terms and conditions, or any related information. Creative Commons disclaims all liability for damages resulting from their use to the fullest extent possible.

Using Creative Commons Public Licenses

Creative Commons public licenses provide a standard set of terms and conditions that creators and other rights holders may use to share original works of authorship and other material subject to copyright and certain other rights specified in the public license below. The following considerations are for informational purposes only, are not exhaustive, and do not form part of our licenses.

 Considerations for licensors: Our public licenses are
 intended for use by those authorized to give the public
 permission to use material in ways otherwise restricted by
 copyright and certain other rights. Our licenses are
 irrevocable. Licensors should read and understand the terms
 and conditions of the license they choose before applying it.
 Licensors should also secure all rights necessary before
 applying our licenses so that the public can reuse the
 material as expected. Licensors should clearly mark any
 material not subject to the license. This includes other CC-
 licensed material, or material used under an exception or
 limitation to copyright. More considerations for licensors:
wiki.creativecommons.org/Considerations_for_licensors

 Considerations for the public: By using one of our public
 licenses, a licensor grants the public permission to use the
 licensed material under specified terms and conditions. If
 the licensor's permission is not necessary for any reason--for
 example, because of any applicable exception or limitation to
 copyright--then that use is not regulated by the license. Our
 licenses grant only permissions under copyright and certain
 other rights that a licensor has authority to grant. Use of
 the licensed material may still be restricted for other
 reasons, including because others have copyright or other
 rights in the material. A licensor may make special requests,
 such as asking that all changes be marked or described.
 Although not required by our licenses, you are encouraged to
 respect those requests where reasonable. More considerations
 for the public:
wiki.creativecommons.org/Considerations_for_licensees

=======================================================================

Creative Commons Attribution-NonCommercial 4.0 International Public License

By exercising the Licensed Rights (defined below), You accept and agree to be bound by the terms and conditions of this Creative Commons Attribution-NonCommercial 4.0 International Public License ("Public License"). To the extent this Public License may be interpreted as a contract, You are granted the Licensed Rights in consideration of Your acceptance of these terms and conditions, and the Licensor grants You such rights in consideration of benefits the Licensor receives from making the Licensed Material available under these terms and conditions.

Section 1 -- Definitions.

a. Adapted Material means material subject to Copyright and Similar Rights that is derived from or based upon the Licensed Material and in which the Licensed Material is translated, altered, arranged, transformed, or otherwise modified in a manner requiring permission under the Copyright and Similar Rights held by the Licensor. For purposes of this Public License, where the Licensed Material is a musical work, performance, or sound recording, Adapted Material is always produced where the Licensed Material is synched in timed relation with a moving image.

b. Adapter's License means the license You apply to Your Copyright and Similar Rights in Your contributions to Adapted Material in accordance with the terms and conditions of this Public License.

c. Copyright and Similar Rights means copyright and/or similar rights closely related to copyright including, without limitation, performance, broadcast, sound recording, and Sui Generis Database Rights, without regard to how the rights are labeled or categorized. For purposes of this Public License, the rights specified in Section 2(b)(1)-(2) are not Copyright and Similar Rights. d. Effective Technological Measures means those measures that, in the absence of proper authority, may not be circumvented under laws fulfilling obligations under Article 11 of the WIPO Copyright Treaty adopted on December 20, 1996, and/or similar international agreements.

e. Exceptions and Limitations means fair use, fair dealing, and/or any other exception or limitation to Copyright and Similar Rights that applies to Your use of the Licensed Material.

f. Licensed Material means the artistic or literary work, database, or other material to which the Licensor applied this Public License.

g. Licensed Rights means the rights granted to You subject to the terms and conditions of this Public License, which are limited to all Copyright and Similar Rights that apply to Your use of the Licensed Material and that the Licensor has authority to license.

h. Licensor means the individual(s) or entity(ies) granting rights under this Public License.

i. NonCommercial means not primarily intended for or directed towards commercial advantage or monetary compensation. For purposes of this Public License, the exchange of the Licensed Material for other material subject to Copyright and Similar Rights by digital file-sharing or similar means is NonCommercial provided there is no payment of monetary compensation in connection with the exchange.

j. Share means to provide material to the public by any means or process that requires permission under the Licensed Rights, such as reproduction, public display, public performance, distribution, dissemination, communication, or importation, and to make material available to the public including in ways that members of the public may access the material from a place and at a time individually chosen by them.

k. Sui Generis Database Rights means rights other than copyright resulting from Directive 96/9/EC of the European Parliament and of the Council of 11 March 1996 on the legal protection of databases, as amended and/or succeeded, as well as other essentially equivalent rights anywhere in the world.

l. You means the individual or entity exercising the Licensed Rights under this Public License. Your has a corresponding meaning.

Section 2 -- Scope.

a. License grant.

   1. Subject to the terms and conditions of this Public License,
      the Licensor hereby grants You a worldwide, royalty-free,
      non-sublicensable, non-exclusive, irrevocable license to
      exercise the Licensed Rights in the Licensed Material to:

        a. reproduce and Share the Licensed Material, in whole or
           in part, for NonCommercial purposes only; and

        b. produce, reproduce, and Share Adapted Material for
           NonCommercial purposes only.

   2. Exceptions and Limitations. For the avoidance of doubt, where
      Exceptions and Limitations apply to Your use, this Public
      License does not apply, and You do not need to comply with
      its terms and conditions.

   3. Term. The term of this Public License is specified in Section
      6(a).

   4. Media and formats; technical modifications allowed. The
      Licensor authorizes You to exercise the Licensed Rights in
      all media and formats whether now known or hereafter created,
      and to make technical modifications necessary to do so. The
      Licensor waives and/or agrees not to assert any right or
      authority to forbid You from making technical modifications
      necessary to exercise the Licensed Rights, including
      technical modifications necessary to circumvent Effective
      Technological Measures. For purposes of this Public License,
      simply making modifications authorized by this Section 2(a)
      (4) never produces Adapted Material.

   5. Downstream recipients.

        a. Offer from the Licensor -- Licensed Material. Every
           recipient of the Licensed Material automatically
           receives an offer from the Licensor to exercise the
           Licensed Rights under the terms and conditions of this
           Public License.

        b. No downstream restrictions. You may not offer or impose
           any additional or different terms or conditions on, or
           apply any Effective Technological Measures to, the
           Licensed Material if doing so restricts exercise of the
           Licensed Rights by any recipient of the Licensed
           Material.

   6. No endorsement. Nothing in this Public License constitutes or
      may be construed as permission to assert or imply that You
      are, or that Your use of the Licensed Material is, connected
      with, or sponsored, endorsed, or granted official status by,
      the Licensor or others designated to receive attribution as
      provided in Section 3(a)(1)(A)(i).

b. Other rights.

   1. Moral rights, such as the right of integrity, are not
      licensed under this Public License, nor are publicity,
      privacy, and/or other similar personality rights; however, to
      the extent possible, the Licensor waives and/or agrees not to
      assert any such rights held by the Licensor to the limited
      extent necessary to allow You to exercise the Licensed
      Rights, but not otherwise.

   2. Patent and trademark rights are not licensed under this
      Public License.

   3. To the extent possible, the Licensor waives any right to
      collect royalties from You for the exercise of the Licensed
      Rights, whether directly or through a collecting society
      under any voluntary or waivable statutory or compulsory
      licensing scheme. In all other cases the Licensor expressly
      reserves any right to collect such royalties, including when
      the Licensed Material is used other than for NonCommercial
      purposes.

Section 3 -- License Conditions.

Your exercise of the Licensed Rights is expressly made subject to the following conditions.

a. Attribution.

   1. If You Share the Licensed Material (including in modified
      form), You must:

        a. retain the following if it is supplied by the Licensor
           with the Licensed Material:

             i. identification of the creator(s) of the Licensed
                Material and any others designated to receive
                attribution, in any reasonable manner requested by
                the Licensor (including by pseudonym if
                designated);

            ii. a copyright notice;

           iii. a notice that refers to this Public License;

            iv. a notice that refers to the disclaimer of
                warranties;

             v. a URI or hyperlink to the Licensed Material to the
                extent reasonably practicable;

        b. indicate if You modified the Licensed Material and
           retain an indication of any previous modifications; and

        c. indicate the Licensed Material is licensed under this
           Public License, and include the text of, or the URI or
           hyperlink to, this Public License.

   2. You may satisfy the conditions in Section 3(a)(1) in any
      reasonable manner based on the medium, means, and context in
      which You Share the Licensed Material. For example, it may be
      reasonable to satisfy the conditions by providing a URI or
      hyperlink to a resource that includes the required
      information.

   3. If requested by the Licensor, You must remove any of the
      information required by Section 3(a)(1)(A) to the extent
      reasonably practicable.

   4. If You Share Adapted Material You produce, the Adapter's
      License You apply must not prevent recipients of the Adapted
      Material from complying with this Public License.

Section 4 -- Sui Generis Database Rights.

Where the Licensed Rights include Sui Generis Database Rights that apply to Your use of the Licensed Material:

a. for the avoidance of doubt, Section 2(a)(1) grants You the right to extract, reuse, reproduce, and Share all or a substantial portion of the contents of the database for NonCommercial purposes only;

b. if You include all or a substantial portion of the database contents in a database in which You have Sui Generis Database Rights, then the database in which You have Sui Generis Database Rights (but not its individual contents) is Adapted Material; and

c. You must comply with the conditions in Section 3(a) if You Share all or a substantial portion of the contents of the database.

For the avoidance of doubt, this Section 4 supplements and does not replace Your obligations under this Public License where the Licensed Rights include other Copyright and Similar Rights.

Section 5 -- Disclaimer of Warranties and Limitation of Liability.

a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS, IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION, WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS, ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.

b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION, NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT, INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES, COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.

c. The disclaimer of warranties and limitation of liability provided above shall be interpreted in a manner that, to the extent possible, most closely approximates an absolute disclaimer and waiver of all liability.

Section 6 -- Term and Termination.

a. This Public License applies for the term of the Copyright and Similar Rights licensed here. However, if You fail to comply with this Public License, then Your rights under this Public License terminate automatically.

b. Where Your right to use the Licensed Material has terminated under Section 6(a), it reinstates:

   1. automatically as of the date the violation is cured, provided
      it is cured within 30 days of Your discovery of the
      violation; or

   2. upon express reinstatement by the Licensor.

 For the avoidance of doubt, this Section 6(b) does not affect any
 right the Licensor may have to seek remedies for Your violations
 of this Public License.

c. For the avoidance of doubt, the Licensor may also offer the Licensed Material under separate terms or conditions or stop distributing the Licensed Material at any time; however, doing so will not terminate this Public License.

d. Sections 1, 5, 6, 7, and 8 survive termination of this Public License.

Section 7 -- Other Terms and Conditions.

a. The Licensor shall not be bound by any additional or different terms or conditions communicated by You unless expressly agreed.

b. Any arrangements, understandings, or agreements regarding the Licensed Material not stated herein are separate from and independent of the terms and conditions of this Public License.

Section 8 -- Interpretation.

a. For the avoidance of doubt, this Public License does not, and shall not be interpreted to, reduce, limit, restrict, or impose conditions on any use of the Licensed Material that could lawfully be made without permission under this Public License.

b. To the extent possible, if any provision of this Public License is deemed unenforceable, it shall be automatically reformed to the minimum extent necessary to make it enforceable. If the provision cannot be reformed, it shall be severed from this Public License without affecting the enforceability of the remaining terms and conditions.

c. No term or condition of this Public License will be waived and no failure to comply consented to unless expressly agreed to by the Licensor.

d. Nothing in this Public License constitutes or may be interpreted as a limitation upon, or waiver of, any privileges and immunities that apply to the Licensor or You, including from the legal processes of any jurisdiction or authority.

=======================================================================

Creative Commons is not a party to its public licenses. Notwithstanding, Creative Commons may elect to apply one of its public licenses to material it publishes and in those instances will be considered the “Licensor.” The text of the Creative Commons public licenses is dedicated to the public domain under the CC0 Public Domain Dedication. Except for the limited purpose of indicating that material is shared under a Creative Commons public license or as otherwise permitted by the Creative Commons policies published at creativecommons.org/policies, Creative Commons does not authorize the use of the trademark "Creative Commons" or any other trademark or logo of Creative Commons without its prior written consent including, without limitation, in connection with any unauthorized modifications to any of its public licenses or any other arrangements, understandings, or agreements concerning use of licensed material. For the avoidance of doubt, this paragraph does not form part of the public licenses.

Creative Commons may be contacted at creativecommons.org.