{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:MZEQFX6SN6KABPI56UV5T5FE77","short_pith_number":"pith:MZEQFX6S","canonical_record":{"source":{"id":"1407.3065","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-11T08:42:33Z","cross_cats_sorted":[],"title_canon_sha256":"43a1ab7450b7016b81f75edf3999d8c89f964983651262b80dd116663b839b6c","abstract_canon_sha256":"f8812980390249b3f4cbafd14a620fa83e5308062d8c5e79ccfc098cf59b2f84"},"schema_version":"1.0"},"canonical_sha256":"664902dfd26f9400bd1df52bd9f4a4ffe24b6429356df196cc888e3e76bc5aa9","source":{"kind":"arxiv","id":"1407.3065","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.3065","created_at":"2026-05-18T02:47:52Z"},{"alias_kind":"arxiv_version","alias_value":"1407.3065v1","created_at":"2026-05-18T02:47:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.3065","created_at":"2026-05-18T02:47:52Z"},{"alias_kind":"pith_short_12","alias_value":"MZEQFX6SN6KA","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"MZEQFX6SN6KABPI5","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"MZEQFX6S","created_at":"2026-05-18T12:28:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:MZEQFX6SN6KABPI56UV5T5FE77","target":"record","payload":{"canonical_record":{"source":{"id":"1407.3065","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-11T08:42:33Z","cross_cats_sorted":[],"title_canon_sha256":"43a1ab7450b7016b81f75edf3999d8c89f964983651262b80dd116663b839b6c","abstract_canon_sha256":"f8812980390249b3f4cbafd14a620fa83e5308062d8c5e79ccfc098cf59b2f84"},"schema_version":"1.0"},"canonical_sha256":"664902dfd26f9400bd1df52bd9f4a4ffe24b6429356df196cc888e3e76bc5aa9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:47:52.139801Z","signature_b64":"Wj9pvONcadEMOdh86HizURSqnDSTqV5E+EWsU9Z2HmfHB0fbMK2Y433uw6GitJWeXY8VhqEVdgbr4IDCo5wICw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"664902dfd26f9400bd1df52bd9f4a4ffe24b6429356df196cc888e3e76bc5aa9","last_reissued_at":"2026-05-18T02:47:52.139272Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:47:52.139272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.3065","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":"2026-05-18T02:47:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0YWRohbUUUnCAcIG8avOfkd3VBxBe051lZgjHHBJaAGu1NQGiNd7VJNINHLhy8yTPaqV99hrBAq1166schUvBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:26:57.505601Z"},"content_sha256":"e6737d3af6e4d1e701d0137eb10e7c16734722bb317a26244b456b0eaa3f1a97","schema_version":"1.0","event_id":"sha256:e6737d3af6e4d1e701d0137eb10e7c16734722bb317a26244b456b0eaa3f1a97"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:MZEQFX6SN6KABPI56UV5T5FE77","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dust Evolution in the Dwarf Galaxy Holmberg II","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"D.S. Wiebe, M.S. Khramtsova, O.V. Egorov, T.A. Lozinskaya","submitted_at":"2014-07-11T08:42:33Z","abstract_excerpt":"A detailed photometric study of star-forming regions (SFRs) in the galaxy Holmberg II has been carried out using archival observational data from the far infrared to ultraviolet obtained with the GALEX, Spitzer, and Herschel telescopes. Spectroscopic observations with the 6-m telescope of Special Astrophysical Observatory of the Russian Academy of Sciences are used to estimate ages and metallicities of SFRs. For the first time, the ages of SFRs have been related to their emission parameters in a wide spectral range and with the physical parameters determined by fitting the observed spectra. It"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.3065","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":""},"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":"2026-05-18T02:47:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hzynqSnQa1vsz0ah21HScZzlurdAnYIYXjKbM/qAzMqHrEaOm1PqbVg4k7zIjgbgX93mqhdC1BiUCibWUWsrAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T06:26:57.506206Z"},"content_sha256":"f9fd0bba6f9dbc3cf00cef1df48378cc6a84f3875cea64cfa6e77230c0c71963","schema_version":"1.0","event_id":"sha256:f9fd0bba6f9dbc3cf00cef1df48378cc6a84f3875cea64cfa6e77230c0c71963"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MZEQFX6SN6KABPI56UV5T5FE77/bundle.json","state_url":"https://pith.science/pith/MZEQFX6SN6KABPI56UV5T5FE77/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MZEQFX6SN6KABPI56UV5T5FE77/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":"2026-05-28T06:26:57Z","links":{"resolver":"https://pith.science/pith/MZEQFX6SN6KABPI56UV5T5FE77","bundle":"https://pith.science/pith/MZEQFX6SN6KABPI56UV5T5FE77/bundle.json","state":"https://pith.science/pith/MZEQFX6SN6KABPI56UV5T5FE77/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MZEQFX6SN6KABPI56UV5T5FE77/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:MZEQFX6SN6KABPI56UV5T5FE77","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":"f8812980390249b3f4cbafd14a620fa83e5308062d8c5e79ccfc098cf59b2f84","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-11T08:42:33Z","title_canon_sha256":"43a1ab7450b7016b81f75edf3999d8c89f964983651262b80dd116663b839b6c"},"schema_version":"1.0","source":{"id":"1407.3065","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.3065","created_at":"2026-05-18T02:47:52Z"},{"alias_kind":"arxiv_version","alias_value":"1407.3065v1","created_at":"2026-05-18T02:47:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.3065","created_at":"2026-05-18T02:47:52Z"},{"alias_kind":"pith_short_12","alias_value":"MZEQFX6SN6KA","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_16","alias_value":"MZEQFX6SN6KABPI5","created_at":"2026-05-18T12:28:41Z"},{"alias_kind":"pith_short_8","alias_value":"MZEQFX6S","created_at":"2026-05-18T12:28:41Z"}],"graph_snapshots":[{"event_id":"sha256:f9fd0bba6f9dbc3cf00cef1df48378cc6a84f3875cea64cfa6e77230c0c71963","target":"graph","created_at":"2026-05-18T02:47:52Z","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"},"paper":{"abstract_excerpt":"A detailed photometric study of star-forming regions (SFRs) in the galaxy Holmberg II has been carried out using archival observational data from the far infrared to ultraviolet obtained with the GALEX, Spitzer, and Herschel telescopes. Spectroscopic observations with the 6-m telescope of Special Astrophysical Observatory of the Russian Academy of Sciences are used to estimate ages and metallicities of SFRs. For the first time, the ages of SFRs have been related to their emission parameters in a wide spectral range and with the physical parameters determined by fitting the observed spectra. It","authors_text":"D.S. Wiebe, M.S. Khramtsova, O.V. Egorov, T.A. Lozinskaya","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-11T08:42:33Z","title":"Dust Evolution in the Dwarf Galaxy Holmberg II"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.3065","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:e6737d3af6e4d1e701d0137eb10e7c16734722bb317a26244b456b0eaa3f1a97","target":"record","created_at":"2026-05-18T02:47:52Z","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":"f8812980390249b3f4cbafd14a620fa83e5308062d8c5e79ccfc098cf59b2f84","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-11T08:42:33Z","title_canon_sha256":"43a1ab7450b7016b81f75edf3999d8c89f964983651262b80dd116663b839b6c"},"schema_version":"1.0","source":{"id":"1407.3065","kind":"arxiv","version":1}},"canonical_sha256":"664902dfd26f9400bd1df52bd9f4a4ffe24b6429356df196cc888e3e76bc5aa9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"664902dfd26f9400bd1df52bd9f4a4ffe24b6429356df196cc888e3e76bc5aa9","first_computed_at":"2026-05-18T02:47:52.139272Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:47:52.139272Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Wj9pvONcadEMOdh86HizURSqnDSTqV5E+EWsU9Z2HmfHB0fbMK2Y433uw6GitJWeXY8VhqEVdgbr4IDCo5wICw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:47:52.139801Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.3065","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e6737d3af6e4d1e701d0137eb10e7c16734722bb317a26244b456b0eaa3f1a97","sha256:f9fd0bba6f9dbc3cf00cef1df48378cc6a84f3875cea64cfa6e77230c0c71963"],"state_sha256":"5e8d1e7813eec0cc7bdc716192a4cd5f3d2cb08f81175dec9afdfd5a07388f31"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C1Fnd1TxyufYOnaI581YZXpxsIm8Lbm2viNMw+FJaIin3euQgqU3VvAXE0kP8faMLB4X5rnWZNwHvlnM/Vy+DQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T06:26:57.509098Z","bundle_sha256":"2e0354d88b313645cbd8c7518bc30606d92e6c4e5ad8a4cfc702a05c8767f253"}}