{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:ZSHNKUFDH2HRM735FA5WYJTJ6H","short_pith_number":"pith:ZSHNKUFD","canonical_record":{"source":{"id":"2004.12996","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-04-27T17:59:28Z","cross_cats_sorted":[],"title_canon_sha256":"7e87bcae4999d924d2eb152951b6efd67f4b69fb9079eea99d6b3d419e075846","abstract_canon_sha256":"e830cbf25f60bcd317e7829320e189e9bf233206efcdfdd636e0f538eb7cc714"},"schema_version":"1.0"},"canonical_sha256":"cc8ed550a33e8f167f7d283b6c2669f1f3a5a5aa38d4ccfe0af70aeb2e5f9731","source":{"kind":"arxiv","id":"2004.12996","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.12996","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"arxiv_version","alias_value":"2004.12996v1","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.12996","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"pith_short_12","alias_value":"ZSHNKUFDH2HR","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"pith_short_16","alias_value":"ZSHNKUFDH2HRM735","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"pith_short_8","alias_value":"ZSHNKUFD","created_at":"2026-07-05T00:58:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:ZSHNKUFDH2HRM735FA5WYJTJ6H","target":"record","payload":{"canonical_record":{"source":{"id":"2004.12996","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-04-27T17:59:28Z","cross_cats_sorted":[],"title_canon_sha256":"7e87bcae4999d924d2eb152951b6efd67f4b69fb9079eea99d6b3d419e075846","abstract_canon_sha256":"e830cbf25f60bcd317e7829320e189e9bf233206efcdfdd636e0f538eb7cc714"},"schema_version":"1.0"},"canonical_sha256":"cc8ed550a33e8f167f7d283b6c2669f1f3a5a5aa38d4ccfe0af70aeb2e5f9731","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:58:29.366612Z","signature_b64":"deAqb/MhZw1ESZ2aUpO2CRaoAhCBXGHA4+tnEQSv+fmQ+32sHJW0HBaCG8rWsYUPO1hg9YMMpJ3aWn8DfpDUCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cc8ed550a33e8f167f7d283b6c2669f1f3a5a5aa38d4ccfe0af70aeb2e5f9731","last_reissued_at":"2026-07-05T00:58:29.366136Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:58:29.366136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2004.12996","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:58:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xPQ3AWcllU/FgqYxsdG9qfSRNECfrbdEp6zR6vAp9gg6vpZJyT1nv/p0EtYH7dDBBt4TrumLkaQfJm9ddjrFAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T20:03:58.428020Z"},"content_sha256":"78f8d067bd9d80c75af2e7fd51de139b4c52f19fbc1ec3d3ef2e9c3ca588b07e","schema_version":"1.0","event_id":"sha256:78f8d067bd9d80c75af2e7fd51de139b4c52f19fbc1ec3d3ef2e9c3ca588b07e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:ZSHNKUFDH2HRM735FA5WYJTJ6H","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Col-OSSOS: Compositional homogeneity of three Kuiper belt binaries","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Brett J. Gladman, Jean-Marc Petit, J. J. Kavelaars, Kathryn Volk, Megan E. Schwamb, Michael Marsset, Michele T. Bannister, Mike Alexandersen, Rosemary E. Pike, Stephen D. J. Gwyn, Susan Benecchi, Wesley C. Fraser, Ying-Tung Chen","submitted_at":"2020-04-27T17:59:28Z","abstract_excerpt":"The surface characterization of Trans-Neptunian Binaries (TNBs) is key to understanding the properties of the disk of planetesimals from which these objects formed. In the optical wavelengths, it has been demonstrated that most equal-sized component systems share similar colors, suggesting they have a similar composition. The color homogeneity of binary pairs contrasts with the overall diversity of colors in the Kuiper belt, which was interpreted as evidence that Trans-Neptunian Objects (TNOs) formed from a locally homogeneous and globally heterogeneous protoplanetary disk. In this paradigm, b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.12996","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2004.12996/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:58:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"le/EcqKDRXYMCFv4V8IHxi5pS4eAlfauFWsj31KD3hmAKOEWQtnFWYA8SU7kf+nGvNh0cPFQVzB90owxK6zABQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T20:03:58.428942Z"},"content_sha256":"282291525d608349ea80f59de107af5266dfe9b7d3a98eb81809771722589a63","schema_version":"1.0","event_id":"sha256:282291525d608349ea80f59de107af5266dfe9b7d3a98eb81809771722589a63"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZSHNKUFDH2HRM735FA5WYJTJ6H/bundle.json","state_url":"https://pith.science/pith/ZSHNKUFDH2HRM735FA5WYJTJ6H/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZSHNKUFDH2HRM735FA5WYJTJ6H/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-04T20:03:58Z","links":{"resolver":"https://pith.science/pith/ZSHNKUFDH2HRM735FA5WYJTJ6H","bundle":"https://pith.science/pith/ZSHNKUFDH2HRM735FA5WYJTJ6H/bundle.json","state":"https://pith.science/pith/ZSHNKUFDH2HRM735FA5WYJTJ6H/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZSHNKUFDH2HRM735FA5WYJTJ6H/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:ZSHNKUFDH2HRM735FA5WYJTJ6H","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"e830cbf25f60bcd317e7829320e189e9bf233206efcdfdd636e0f538eb7cc714","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-04-27T17:59:28Z","title_canon_sha256":"7e87bcae4999d924d2eb152951b6efd67f4b69fb9079eea99d6b3d419e075846"},"schema_version":"1.0","source":{"id":"2004.12996","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2004.12996","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"arxiv_version","alias_value":"2004.12996v1","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2004.12996","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"pith_short_12","alias_value":"ZSHNKUFDH2HR","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"pith_short_16","alias_value":"ZSHNKUFDH2HRM735","created_at":"2026-07-05T00:58:29Z"},{"alias_kind":"pith_short_8","alias_value":"ZSHNKUFD","created_at":"2026-07-05T00:58:29Z"}],"graph_snapshots":[{"event_id":"sha256:282291525d608349ea80f59de107af5266dfe9b7d3a98eb81809771722589a63","target":"graph","created_at":"2026-07-05T00:58:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2004.12996/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The surface characterization of Trans-Neptunian Binaries (TNBs) is key to understanding the properties of the disk of planetesimals from which these objects formed. In the optical wavelengths, it has been demonstrated that most equal-sized component systems share similar colors, suggesting they have a similar composition. The color homogeneity of binary pairs contrasts with the overall diversity of colors in the Kuiper belt, which was interpreted as evidence that Trans-Neptunian Objects (TNOs) formed from a locally homogeneous and globally heterogeneous protoplanetary disk. In this paradigm, b","authors_text":"Brett J. Gladman, Jean-Marc Petit, J. J. Kavelaars, Kathryn Volk, Megan E. Schwamb, Michael Marsset, Michele T. Bannister, Mike Alexandersen, Rosemary E. Pike, Stephen D. J. Gwyn, Susan Benecchi, Wesley C. Fraser, Ying-Tung Chen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-04-27T17:59:28Z","title":"Col-OSSOS: Compositional homogeneity of three Kuiper belt binaries"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2004.12996","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:78f8d067bd9d80c75af2e7fd51de139b4c52f19fbc1ec3d3ef2e9c3ca588b07e","target":"record","created_at":"2026-07-05T00:58:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"e830cbf25f60bcd317e7829320e189e9bf233206efcdfdd636e0f538eb7cc714","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2020-04-27T17:59:28Z","title_canon_sha256":"7e87bcae4999d924d2eb152951b6efd67f4b69fb9079eea99d6b3d419e075846"},"schema_version":"1.0","source":{"id":"2004.12996","kind":"arxiv","version":1}},"canonical_sha256":"cc8ed550a33e8f167f7d283b6c2669f1f3a5a5aa38d4ccfe0af70aeb2e5f9731","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc8ed550a33e8f167f7d283b6c2669f1f3a5a5aa38d4ccfe0af70aeb2e5f9731","first_computed_at":"2026-07-05T00:58:29.366136Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:58:29.366136Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"deAqb/MhZw1ESZ2aUpO2CRaoAhCBXGHA4+tnEQSv+fmQ+32sHJW0HBaCG8rWsYUPO1hg9YMMpJ3aWn8DfpDUCw==","signature_status":"signed_v1","signed_at":"2026-07-05T00:58:29.366612Z","signed_message":"canonical_sha256_bytes"},"source_id":"2004.12996","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:78f8d067bd9d80c75af2e7fd51de139b4c52f19fbc1ec3d3ef2e9c3ca588b07e","sha256:282291525d608349ea80f59de107af5266dfe9b7d3a98eb81809771722589a63"],"state_sha256":"963637090007668fbb0106c20d8d8cadaf3409e5a2e59be574bb895b6e51ad56"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iOd0W9YioDuzYwlISZ+ZULRbqtBa0NMFFs6CIykMH0qOyClecm6EIu/9bLPaz2xaVpqkaV+gO4paz9HCyAmjBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T20:03:58.439549Z","bundle_sha256":"39957577dcf8ea2039a6efa0df42cfb03e3ee092a9810eb1d9fd9c31c73d5b08"}}