{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:UPSMT6DSBOPWHIEFRMFTIWQYBZ","short_pith_number":"pith:UPSMT6DS","canonical_record":{"source":{"id":"1509.00053","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-31T20:29:18Z","cross_cats_sorted":[],"title_canon_sha256":"5c6ed5614bcf9c567d9feda90de7473378d7a04f988643e573d911ae6712569f","abstract_canon_sha256":"5070a2607dbe97e8e9a10fdb5da65a15085df2bf140441b57eccbba0bb4f6ab3"},"schema_version":"1.0"},"canonical_sha256":"a3e4c9f8720b9f63a0858b0b345a180e610336b14c27b97d0628824d6418324c","source":{"kind":"arxiv","id":"1509.00053","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.00053","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"arxiv_version","alias_value":"1509.00053v1","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.00053","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"pith_short_12","alias_value":"UPSMT6DSBOPW","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UPSMT6DSBOPWHIEF","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UPSMT6DS","created_at":"2026-05-18T12:29:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:UPSMT6DSBOPWHIEFRMFTIWQYBZ","target":"record","payload":{"canonical_record":{"source":{"id":"1509.00053","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-31T20:29:18Z","cross_cats_sorted":[],"title_canon_sha256":"5c6ed5614bcf9c567d9feda90de7473378d7a04f988643e573d911ae6712569f","abstract_canon_sha256":"5070a2607dbe97e8e9a10fdb5da65a15085df2bf140441b57eccbba0bb4f6ab3"},"schema_version":"1.0"},"canonical_sha256":"a3e4c9f8720b9f63a0858b0b345a180e610336b14c27b97d0628824d6418324c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:24:52.826084Z","signature_b64":"Rlie3cNBIb+mgczwi+p2viVa3HeBi/Jy+K6VqScnJQs6mve7PsSo8AOm/UnfP6PmgA5jtyunmwhIWI0x2nRAAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a3e4c9f8720b9f63a0858b0b345a180e610336b14c27b97d0628824d6418324c","last_reissued_at":"2026-05-18T01:24:52.825349Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:24:52.825349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.00053","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":"2026-05-18T01:24:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QR3O82W+l4oVCwX4tG4p0hysaobXhfYvekqlQEwwFkpWSCetzGW2MKOtOucBHw/8emgTOJF4N74FMdd7qyPiAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T19:47:01.024158Z"},"content_sha256":"da32a23e9fc6461eccec8910b86a85868eb0020c1ed6c0ceba39e9f7abf0d8d9","schema_version":"1.0","event_id":"sha256:da32a23e9fc6461eccec8910b86a85868eb0020c1ed6c0ceba39e9f7abf0d8d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:UPSMT6DSBOPWHIEFRMFTIWQYBZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Single stars in the Hyades open cluster. Fiducial sequence for testing stellar and atmospheric models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Elena Schilbach, Emanuele Tognelli, Nicola Da Rio, Pier Giorgio Prada Moroni, Siegfried R\\\"oser, Taisiya G. Kopytova, Wolfgang Brandner","submitted_at":"2015-08-31T20:29:18Z","abstract_excerpt":"Age and mass determinations for isolated stellar objects remain model-dependent. While stellar interior and atmospheric theoretical models are rapidly evolving, we need a powerful tool to test them. Open clusters are good candidates for this role. We complement previous studies on the Hyades multiplicity by Lucky Imaging observations with the AstraLux Norte camera. This allows us to exclude possible binary and multiple systems with companions outside 2--7 AU separation and to create a \"single-star sequence\" for the Hyades. The sequence encompasses 250 main-sequence stars ranging from A5V to M6"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00053","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":"2026-05-18T01:24:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EXsGRdkxxb0hPDznGSR+J46gVX8VsVgd/cGr6SCGGv3HrkUa5qsgLtwP60iGHsvMWdcLen8vWjODaVoeXCZ7Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T19:47:01.024849Z"},"content_sha256":"e09d07442d1fa509a974180728771008e3c785e12a48330cb8976420f9808853","schema_version":"1.0","event_id":"sha256:e09d07442d1fa509a974180728771008e3c785e12a48330cb8976420f9808853"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UPSMT6DSBOPWHIEFRMFTIWQYBZ/bundle.json","state_url":"https://pith.science/pith/UPSMT6DSBOPWHIEFRMFTIWQYBZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UPSMT6DSBOPWHIEFRMFTIWQYBZ/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":"2026-05-24T19:47:01Z","links":{"resolver":"https://pith.science/pith/UPSMT6DSBOPWHIEFRMFTIWQYBZ","bundle":"https://pith.science/pith/UPSMT6DSBOPWHIEFRMFTIWQYBZ/bundle.json","state":"https://pith.science/pith/UPSMT6DSBOPWHIEFRMFTIWQYBZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UPSMT6DSBOPWHIEFRMFTIWQYBZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:UPSMT6DSBOPWHIEFRMFTIWQYBZ","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":"5070a2607dbe97e8e9a10fdb5da65a15085df2bf140441b57eccbba0bb4f6ab3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-31T20:29:18Z","title_canon_sha256":"5c6ed5614bcf9c567d9feda90de7473378d7a04f988643e573d911ae6712569f"},"schema_version":"1.0","source":{"id":"1509.00053","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.00053","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"arxiv_version","alias_value":"1509.00053v1","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.00053","created_at":"2026-05-18T01:24:52Z"},{"alias_kind":"pith_short_12","alias_value":"UPSMT6DSBOPW","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_16","alias_value":"UPSMT6DSBOPWHIEF","created_at":"2026-05-18T12:29:44Z"},{"alias_kind":"pith_short_8","alias_value":"UPSMT6DS","created_at":"2026-05-18T12:29:44Z"}],"graph_snapshots":[{"event_id":"sha256:e09d07442d1fa509a974180728771008e3c785e12a48330cb8976420f9808853","target":"graph","created_at":"2026-05-18T01:24:52Z","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":"Age and mass determinations for isolated stellar objects remain model-dependent. While stellar interior and atmospheric theoretical models are rapidly evolving, we need a powerful tool to test them. Open clusters are good candidates for this role. We complement previous studies on the Hyades multiplicity by Lucky Imaging observations with the AstraLux Norte camera. This allows us to exclude possible binary and multiple systems with companions outside 2--7 AU separation and to create a \"single-star sequence\" for the Hyades. The sequence encompasses 250 main-sequence stars ranging from A5V to M6","authors_text":"Elena Schilbach, Emanuele Tognelli, Nicola Da Rio, Pier Giorgio Prada Moroni, Siegfried R\\\"oser, Taisiya G. Kopytova, Wolfgang Brandner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-31T20:29:18Z","title":"Single stars in the Hyades open cluster. Fiducial sequence for testing stellar and atmospheric models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00053","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:da32a23e9fc6461eccec8910b86a85868eb0020c1ed6c0ceba39e9f7abf0d8d9","target":"record","created_at":"2026-05-18T01:24:52Z","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":"5070a2607dbe97e8e9a10fdb5da65a15085df2bf140441b57eccbba0bb4f6ab3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-08-31T20:29:18Z","title_canon_sha256":"5c6ed5614bcf9c567d9feda90de7473378d7a04f988643e573d911ae6712569f"},"schema_version":"1.0","source":{"id":"1509.00053","kind":"arxiv","version":1}},"canonical_sha256":"a3e4c9f8720b9f63a0858b0b345a180e610336b14c27b97d0628824d6418324c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a3e4c9f8720b9f63a0858b0b345a180e610336b14c27b97d0628824d6418324c","first_computed_at":"2026-05-18T01:24:52.825349Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:24:52.825349Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Rlie3cNBIb+mgczwi+p2viVa3HeBi/Jy+K6VqScnJQs6mve7PsSo8AOm/UnfP6PmgA5jtyunmwhIWI0x2nRAAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:24:52.826084Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.00053","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da32a23e9fc6461eccec8910b86a85868eb0020c1ed6c0ceba39e9f7abf0d8d9","sha256:e09d07442d1fa509a974180728771008e3c785e12a48330cb8976420f9808853"],"state_sha256":"f4e9cba286064b274238e0dcab0b48f3025d69bd56b289d8e6bd91f5251b31ca"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DFxA4BAQ9JMEPRFR6NWZAV/Y1AIMrl0ypw/R3qWABsMzdYJjYKiwLPDdu8j+7Bj2Za0wwCg4X/W5GkmU0lgJCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T19:47:01.029227Z","bundle_sha256":"c4e9930d49e4870ead543b007a92d3792cfd7dbda183c028ed4d682bbe388376"}}