{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:W63EDAH2XFGW5QAADYDOVTUYCW","short_pith_number":"pith:W63EDAH2","canonical_record":{"source":{"id":"2007.04401","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T20:02:26Z","cross_cats_sorted":[],"title_canon_sha256":"0d3735e84cc06d61c987906ec48f0b75ad614f690cb6647634b580ed40bd69d8","abstract_canon_sha256":"f0735cd5ee7598bcddc4fd3545020a93e47f32ff857daba8374ec8927d81292a"},"schema_version":"1.0"},"canonical_sha256":"b7b64180fab94d6ec0001e06eace981593a2e511e8d7a6e7f8822a24de616a5d","source":{"kind":"arxiv","id":"2007.04401","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.04401","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"arxiv_version","alias_value":"2007.04401v1","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.04401","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"pith_short_12","alias_value":"W63EDAH2XFGW","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"pith_short_16","alias_value":"W63EDAH2XFGW5QAA","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"pith_short_8","alias_value":"W63EDAH2","created_at":"2026-07-05T01:39:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:W63EDAH2XFGW5QAADYDOVTUYCW","target":"record","payload":{"canonical_record":{"source":{"id":"2007.04401","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T20:02:26Z","cross_cats_sorted":[],"title_canon_sha256":"0d3735e84cc06d61c987906ec48f0b75ad614f690cb6647634b580ed40bd69d8","abstract_canon_sha256":"f0735cd5ee7598bcddc4fd3545020a93e47f32ff857daba8374ec8927d81292a"},"schema_version":"1.0"},"canonical_sha256":"b7b64180fab94d6ec0001e06eace981593a2e511e8d7a6e7f8822a24de616a5d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:39:02.876465Z","signature_b64":"rQMlK/XuHaUl/hjB4moeAFdmf/T8+z92+7KTgzggisERud2699E11grdaRvsPKG3swKSzekE24Ahh+lOck+ADA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b7b64180fab94d6ec0001e06eace981593a2e511e8d7a6e7f8822a24de616a5d","last_reissued_at":"2026-07-05T01:39:02.875887Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:39:02.875887Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.04401","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":"2026-07-05T01:39:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yqppwWtWNtl45y165Hi6AVLKIs68ui/aLYA6pd19UfJ7OEsUEKOtrQo1Qu6whfeo48ngvPAPXc/Ym+n6W0KrCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T05:20:59.591300Z"},"content_sha256":"4b7c847ee2618726153ccc989578183d6ccc6baf2a2aeccc273db8b29317dec9","schema_version":"1.0","event_id":"sha256:4b7c847ee2618726153ccc989578183d6ccc6baf2a2aeccc273db8b29317dec9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:W63EDAH2XFGW5QAADYDOVTUYCW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"GALACTICNUCLEUS: A high-angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength dependence of the extinction curve in the near-infrared","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aurelia Teresa Gallego-Calvente, Banafsheh Shahzamanian, Eulalia Gallego-Cano, Francisco Najarro, Francisco Nogueras-Lara, Nadine Neumayer, Rainer Sch\\\"odel","submitted_at":"2020-07-08T20:02:26Z","abstract_excerpt":"The characterisation of the extinction curve in the near infrared (NIR) is fundamental to analyse the structure and stellar population of the Galactic centre (GC), whose analysis is hampered by the extreme interstellar extinction ($A_V\\sim 30$ mag) that varies on arc-second scales. Recent studies indicate that the behaviour of the extinction curve might be more complex than previously assumed, pointing towards a variation of the extinction curve as a function of wavelength. We aim at analysing the variations of the extinction index, $\\alpha$, with wavelength, line-of-sight, and absolute extinc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.04401","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/2007.04401/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":"2026-07-05T01:39:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jesOdtGE+1yqIrgRGK8v96vVjgIU3Xob6VvKjb2aVh8oOH9qhyTTkZRa1pHfMlntP1sUG7rGRwAOJAzawQ4pAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T05:20:59.591802Z"},"content_sha256":"0f00e809487e3da2500995b5b4bc5b5a80e478911c9ae04021b0f7dd86016d1f","schema_version":"1.0","event_id":"sha256:0f00e809487e3da2500995b5b4bc5b5a80e478911c9ae04021b0f7dd86016d1f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W63EDAH2XFGW5QAADYDOVTUYCW/bundle.json","state_url":"https://pith.science/pith/W63EDAH2XFGW5QAADYDOVTUYCW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W63EDAH2XFGW5QAADYDOVTUYCW/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":"2026-08-04T05:20:59Z","links":{"resolver":"https://pith.science/pith/W63EDAH2XFGW5QAADYDOVTUYCW","bundle":"https://pith.science/pith/W63EDAH2XFGW5QAADYDOVTUYCW/bundle.json","state":"https://pith.science/pith/W63EDAH2XFGW5QAADYDOVTUYCW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W63EDAH2XFGW5QAADYDOVTUYCW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:W63EDAH2XFGW5QAADYDOVTUYCW","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":"f0735cd5ee7598bcddc4fd3545020a93e47f32ff857daba8374ec8927d81292a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T20:02:26Z","title_canon_sha256":"0d3735e84cc06d61c987906ec48f0b75ad614f690cb6647634b580ed40bd69d8"},"schema_version":"1.0","source":{"id":"2007.04401","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.04401","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"arxiv_version","alias_value":"2007.04401v1","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.04401","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"pith_short_12","alias_value":"W63EDAH2XFGW","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"pith_short_16","alias_value":"W63EDAH2XFGW5QAA","created_at":"2026-07-05T01:39:02Z"},{"alias_kind":"pith_short_8","alias_value":"W63EDAH2","created_at":"2026-07-05T01:39:02Z"}],"graph_snapshots":[{"event_id":"sha256:0f00e809487e3da2500995b5b4bc5b5a80e478911c9ae04021b0f7dd86016d1f","target":"graph","created_at":"2026-07-05T01:39:02Z","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/2007.04401/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The characterisation of the extinction curve in the near infrared (NIR) is fundamental to analyse the structure and stellar population of the Galactic centre (GC), whose analysis is hampered by the extreme interstellar extinction ($A_V\\sim 30$ mag) that varies on arc-second scales. Recent studies indicate that the behaviour of the extinction curve might be more complex than previously assumed, pointing towards a variation of the extinction curve as a function of wavelength. We aim at analysing the variations of the extinction index, $\\alpha$, with wavelength, line-of-sight, and absolute extinc","authors_text":"Aurelia Teresa Gallego-Calvente, Banafsheh Shahzamanian, Eulalia Gallego-Cano, Francisco Najarro, Francisco Nogueras-Lara, Nadine Neumayer, Rainer Sch\\\"odel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T20:02:26Z","title":"GALACTICNUCLEUS: A high-angular-resolution JHKs imaging survey of the Galactic centre III. Evidence for wavelength dependence of the extinction curve in the near-infrared"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.04401","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":"sha256:4b7c847ee2618726153ccc989578183d6ccc6baf2a2aeccc273db8b29317dec9","target":"record","created_at":"2026-07-05T01:39:02Z","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":"f0735cd5ee7598bcddc4fd3545020a93e47f32ff857daba8374ec8927d81292a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2020-07-08T20:02:26Z","title_canon_sha256":"0d3735e84cc06d61c987906ec48f0b75ad614f690cb6647634b580ed40bd69d8"},"schema_version":"1.0","source":{"id":"2007.04401","kind":"arxiv","version":1}},"canonical_sha256":"b7b64180fab94d6ec0001e06eace981593a2e511e8d7a6e7f8822a24de616a5d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b7b64180fab94d6ec0001e06eace981593a2e511e8d7a6e7f8822a24de616a5d","first_computed_at":"2026-07-05T01:39:02.875887Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:39:02.875887Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rQMlK/XuHaUl/hjB4moeAFdmf/T8+z92+7KTgzggisERud2699E11grdaRvsPKG3swKSzekE24Ahh+lOck+ADA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:39:02.876465Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.04401","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4b7c847ee2618726153ccc989578183d6ccc6baf2a2aeccc273db8b29317dec9","sha256:0f00e809487e3da2500995b5b4bc5b5a80e478911c9ae04021b0f7dd86016d1f"],"state_sha256":"9f37235f01546ffa7de3f30f2115473ffaf39bc2fde3082cf4e967e7070f24a4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d29TjNRyN1lQK/GzTiAOmOvHaxrhgOz+wWLHcChrVMxzKuqiCOXtK9feV8ChpF5EgCeHwT23B/mgUQcVfliLDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T05:20:59.596511Z","bundle_sha256":"dd9cca5761ed286fb0588df5450b33362daf03206fb8c5ccb81841597235c713"}}