{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:6JQCVS3AHYNBFOJ55PUUK7K6KY","short_pith_number":"pith:6JQCVS3A","canonical_record":{"source":{"id":"1901.11375","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-31T14:39:54Z","cross_cats_sorted":[],"title_canon_sha256":"f458a9a7b7dd4f6f34a695b2ea0251b09a528c2e0278265bdc44a1d3ba385159","abstract_canon_sha256":"76a556cc97bcf171002a8c1aef72e239722a39454f6b99317270d4863950c47d"},"schema_version":"1.0"},"canonical_sha256":"f2602acb603e1a12b93debe9457d5e560134e4ca9e3128f9ee63a518d2734ec1","source":{"kind":"arxiv","id":"1901.11375","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.11375","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"arxiv_version","alias_value":"1901.11375v2","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.11375","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"pith_short_12","alias_value":"6JQCVS3AHYNB","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"6JQCVS3AHYNBFOJ5","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"6JQCVS3A","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:6JQCVS3AHYNBFOJ55PUUK7K6KY","target":"record","payload":{"canonical_record":{"source":{"id":"1901.11375","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-31T14:39:54Z","cross_cats_sorted":[],"title_canon_sha256":"f458a9a7b7dd4f6f34a695b2ea0251b09a528c2e0278265bdc44a1d3ba385159","abstract_canon_sha256":"76a556cc97bcf171002a8c1aef72e239722a39454f6b99317270d4863950c47d"},"schema_version":"1.0"},"canonical_sha256":"f2602acb603e1a12b93debe9457d5e560134e4ca9e3128f9ee63a518d2734ec1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:52:38.046297Z","signature_b64":"d0Yx5IA6DwEIibuwb8xj1cWjcOo6Rxci7Ugh+FMTGPQd54cL0hJWrZcy9jC1mjuoIDTzDrTaoowG0Hzoo6iyCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f2602acb603e1a12b93debe9457d5e560134e4ca9e3128f9ee63a518d2734ec1","last_reissued_at":"2026-05-17T23:52:38.045602Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:52:38.045602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.11375","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:52:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E7h2TtCQcRrHso/NCAr5KQeInUY8FLv7eC/EKT24UnIjaKp2as9EEl3xsXPjwvkJWZNz9AQMmyEdRBTSX5H8Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T01:47:13.060639Z"},"content_sha256":"c55dde89e06a884cd3b01b39035d3657c22acf156d444fcd343dd1eaec8618e0","schema_version":"1.0","event_id":"sha256:c55dde89e06a884cd3b01b39035d3657c22acf156d444fcd343dd1eaec8618e0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:6JQCVS3AHYNBFOJ55PUUK7K6KY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Young open cluster IC 4996 and its vicinity: multicolor photometry and Gaia DR2 astrometry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(2) Vatican Observatory Research Group, (3) INAF Astronomical Observatory of Padova, (4) Vatican Observatory, A. Kazlauskas (1) ((1) Institute of Theoretical Physics, Asiago, Astronomy, Italy, J. Zdanavi\\v{c}ius (1), K. Mila\\v{s}ius (1), K. \\v{C}ernis (1), K. Zdanavi\\v{c}ius (1), Lithuania, M. Macijauskas (1), M. Maskoli\\=unas (1), R. Janusz (4), R. P. Boyle (2), S. Raudeli\\=unas (1), Steward Observatory, U. Munari (3), USA, Vatican City State), Vilnius University, V. Strai\\v{z}ys (1)","submitted_at":"2019-01-31T14:39:54Z","abstract_excerpt":"The open cluster IC 4996 in Cygnus and its vicinity are investigated by applying a two-dimensional photometric classification of stars measured in the Vilnius seven-color photometric system. Cluster members are identified by applying distances based on the Gaia DR2 parallaxes and the point vector diagram of the Gaia DR2 proper motions. For some B-type stars, spectroscopic MK types are also obtained from the Asiago spectra and collected from the literature. New parameters of the cluster are derived. The interstellar extinction $A_V$ covers a wide range of values, from 1.3 to 2.4 mag; the mean v"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.11375","kind":"arxiv","version":2},"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":"2026-05-17T23:52:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RZmkSrS3a3Eof6hiGwTegRk5ZtvTAsu2O0wcHVPBkcA1CNcirq+Cl3KMn2PsUyhhAOPYk9gLFqVXLUBHjTKpDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T01:47:13.061291Z"},"content_sha256":"da25e5d9cf6c3800fbdf928ed93b9de6964435d686feef062200824fa2611133","schema_version":"1.0","event_id":"sha256:da25e5d9cf6c3800fbdf928ed93b9de6964435d686feef062200824fa2611133"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6JQCVS3AHYNBFOJ55PUUK7K6KY/bundle.json","state_url":"https://pith.science/pith/6JQCVS3AHYNBFOJ55PUUK7K6KY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6JQCVS3AHYNBFOJ55PUUK7K6KY/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":"2026-06-01T01:47:13Z","links":{"resolver":"https://pith.science/pith/6JQCVS3AHYNBFOJ55PUUK7K6KY","bundle":"https://pith.science/pith/6JQCVS3AHYNBFOJ55PUUK7K6KY/bundle.json","state":"https://pith.science/pith/6JQCVS3AHYNBFOJ55PUUK7K6KY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6JQCVS3AHYNBFOJ55PUUK7K6KY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:6JQCVS3AHYNBFOJ55PUUK7K6KY","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":"76a556cc97bcf171002a8c1aef72e239722a39454f6b99317270d4863950c47d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-31T14:39:54Z","title_canon_sha256":"f458a9a7b7dd4f6f34a695b2ea0251b09a528c2e0278265bdc44a1d3ba385159"},"schema_version":"1.0","source":{"id":"1901.11375","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.11375","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"arxiv_version","alias_value":"1901.11375v2","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.11375","created_at":"2026-05-17T23:52:38Z"},{"alias_kind":"pith_short_12","alias_value":"6JQCVS3AHYNB","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"6JQCVS3AHYNBFOJ5","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"6JQCVS3A","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:da25e5d9cf6c3800fbdf928ed93b9de6964435d686feef062200824fa2611133","target":"graph","created_at":"2026-05-17T23:52:38Z","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":"The open cluster IC 4996 in Cygnus and its vicinity are investigated by applying a two-dimensional photometric classification of stars measured in the Vilnius seven-color photometric system. Cluster members are identified by applying distances based on the Gaia DR2 parallaxes and the point vector diagram of the Gaia DR2 proper motions. For some B-type stars, spectroscopic MK types are also obtained from the Asiago spectra and collected from the literature. New parameters of the cluster are derived. The interstellar extinction $A_V$ covers a wide range of values, from 1.3 to 2.4 mag; the mean v","authors_text":"(2) Vatican Observatory Research Group, (3) INAF Astronomical Observatory of Padova, (4) Vatican Observatory, A. Kazlauskas (1) ((1) Institute of Theoretical Physics, Asiago, Astronomy, Italy, J. Zdanavi\\v{c}ius (1), K. Mila\\v{s}ius (1), K. \\v{C}ernis (1), K. Zdanavi\\v{c}ius (1), Lithuania, M. Macijauskas (1), M. Maskoli\\=unas (1), R. Janusz (4), R. P. Boyle (2), S. Raudeli\\=unas (1), Steward Observatory, U. Munari (3), USA, Vatican City State), Vilnius University, V. Strai\\v{z}ys (1)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-31T14:39:54Z","title":"Young open cluster IC 4996 and its vicinity: multicolor photometry and Gaia DR2 astrometry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.11375","kind":"arxiv","version":2},"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:c55dde89e06a884cd3b01b39035d3657c22acf156d444fcd343dd1eaec8618e0","target":"record","created_at":"2026-05-17T23:52:38Z","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":"76a556cc97bcf171002a8c1aef72e239722a39454f6b99317270d4863950c47d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-01-31T14:39:54Z","title_canon_sha256":"f458a9a7b7dd4f6f34a695b2ea0251b09a528c2e0278265bdc44a1d3ba385159"},"schema_version":"1.0","source":{"id":"1901.11375","kind":"arxiv","version":2}},"canonical_sha256":"f2602acb603e1a12b93debe9457d5e560134e4ca9e3128f9ee63a518d2734ec1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2602acb603e1a12b93debe9457d5e560134e4ca9e3128f9ee63a518d2734ec1","first_computed_at":"2026-05-17T23:52:38.045602Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:52:38.045602Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"d0Yx5IA6DwEIibuwb8xj1cWjcOo6Rxci7Ugh+FMTGPQd54cL0hJWrZcy9jC1mjuoIDTzDrTaoowG0Hzoo6iyCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:52:38.046297Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.11375","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c55dde89e06a884cd3b01b39035d3657c22acf156d444fcd343dd1eaec8618e0","sha256:da25e5d9cf6c3800fbdf928ed93b9de6964435d686feef062200824fa2611133"],"state_sha256":"c25f25cb86294737c9e0155a08077add5c8e468509283534df938303c8ed7c47"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eEPDRUoC3uoqVkKdCUkjyfSUyq8YEySJS2qxI41rPML0OZACJrIPMKoOmlFV3yimGuz8M1UOhusRTlHn4WPGCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T01:47:13.065043Z","bundle_sha256":"89d86c064d7fd81d1498886b03ca4877222569e127e4a013d893e5d4e8c7dfad"}}