{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:H6DKVBAP3VXSLSQ2S4GQL26HZT","short_pith_number":"pith:H6DKVBAP","canonical_record":{"source":{"id":"2504.01748","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-02T14:00:29Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"89bf6cad0a192c9d90b19901e890360f9a4611e8e468495895baca5fb44bbf8f","abstract_canon_sha256":"ee155a9ce2852cf4b4dd89ed774e27c41114d34a155a4b3741dcc2bb3f375f10"},"schema_version":"1.0"},"canonical_sha256":"3f86aa840fdd6f25ca1a970d05ebc7cce7343861ffbd37e34fa7cc7cc938ea49","source":{"kind":"arxiv","id":"2504.01748","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.01748","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"arxiv_version","alias_value":"2504.01748v1","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.01748","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"pith_short_12","alias_value":"H6DKVBAP3VXS","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"pith_short_16","alias_value":"H6DKVBAP3VXSLSQ2","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"pith_short_8","alias_value":"H6DKVBAP","created_at":"2026-07-05T10:43:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:H6DKVBAP3VXSLSQ2S4GQL26HZT","target":"record","payload":{"canonical_record":{"source":{"id":"2504.01748","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-02T14:00:29Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"89bf6cad0a192c9d90b19901e890360f9a4611e8e468495895baca5fb44bbf8f","abstract_canon_sha256":"ee155a9ce2852cf4b4dd89ed774e27c41114d34a155a4b3741dcc2bb3f375f10"},"schema_version":"1.0"},"canonical_sha256":"3f86aa840fdd6f25ca1a970d05ebc7cce7343861ffbd37e34fa7cc7cc938ea49","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:43:29.324591Z","signature_b64":"vO+toThjntaWh1J6hpqTno12xvZLS0wG6hD5emmFseTY7EBbvKXmqbFFnVXNYC/jnDsuiJX0ttQCQ84JcoslDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3f86aa840fdd6f25ca1a970d05ebc7cce7343861ffbd37e34fa7cc7cc938ea49","last_reissued_at":"2026-07-05T10:43:29.324141Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:43:29.324141Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.01748","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":"2026-07-05T10:43:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YxzcBAQmbrYc4ydgUwLU/9oDK9TEqJbttk8GDmjbMjaEApVW+GDIqsdk5qkVaKfsLMuVkFWmnxJi9azmu2LKDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T14:55:43.984532Z"},"content_sha256":"956109a5f3ac64c6ff8b9ef4ae60ff4f234c6f1fac5cdc01da4d1ae0bfafcdaa","schema_version":"1.0","event_id":"sha256:956109a5f3ac64c6ff8b9ef4ae60ff4f234c6f1fac5cdc01da4d1ae0bfafcdaa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:H6DKVBAP3VXSLSQ2S4GQL26HZT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quantifying the scale of star formation across the Perseus spiral arm using young clusters around Cas OB5","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Alexis L. Quintana, Ignacio Negueruela, Sara R. Berlanas","submitted_at":"2025-04-02T14:00:29Z","abstract_excerpt":"Cas OB5 is an OB association located at a distance of 2.5-3 kpc that intercepts the Perseus spiral arm. It carries a moderate amount of reddening ($A_V \\sim$ 2-3 mag) and contains several well-known open clusters within its boundaries, such as King 12, NGC 7788, and NGC 7790. The availability of modern clustering algorithms, together with \\textit{Gaia} DR3 kinematics and complementary spectroscopic data, makes it a suitable site for studies of Galactic structure. We seek to quantify the spatial scale of star formation in the spiral arms, using Cas OB5 as a pilot target before extending our stu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.01748","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/2504.01748/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":"2026-07-05T10:43:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KjLtEYDW4tyNO3lPgL4vQwuO3yTu/H/UqKWBtU9hs/xeggqJrYXEBHOM47FORhABkbc6vuryTSZ4VcDD9A92Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-11T14:55:43.984998Z"},"content_sha256":"0b5b2f61f4097ca9c192e983b1c50bb59c0ceabf5fd9210e4d3026db2e901d04","schema_version":"1.0","event_id":"sha256:0b5b2f61f4097ca9c192e983b1c50bb59c0ceabf5fd9210e4d3026db2e901d04"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/H6DKVBAP3VXSLSQ2S4GQL26HZT/bundle.json","state_url":"https://pith.science/pith/H6DKVBAP3VXSLSQ2S4GQL26HZT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/H6DKVBAP3VXSLSQ2S4GQL26HZT/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":"2026-07-11T14:55:43Z","links":{"resolver":"https://pith.science/pith/H6DKVBAP3VXSLSQ2S4GQL26HZT","bundle":"https://pith.science/pith/H6DKVBAP3VXSLSQ2S4GQL26HZT/bundle.json","state":"https://pith.science/pith/H6DKVBAP3VXSLSQ2S4GQL26HZT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/H6DKVBAP3VXSLSQ2S4GQL26HZT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:H6DKVBAP3VXSLSQ2S4GQL26HZT","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":"ee155a9ce2852cf4b4dd89ed774e27c41114d34a155a4b3741dcc2bb3f375f10","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-02T14:00:29Z","title_canon_sha256":"89bf6cad0a192c9d90b19901e890360f9a4611e8e468495895baca5fb44bbf8f"},"schema_version":"1.0","source":{"id":"2504.01748","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.01748","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"arxiv_version","alias_value":"2504.01748v1","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.01748","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"pith_short_12","alias_value":"H6DKVBAP3VXS","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"pith_short_16","alias_value":"H6DKVBAP3VXSLSQ2","created_at":"2026-07-05T10:43:29Z"},{"alias_kind":"pith_short_8","alias_value":"H6DKVBAP","created_at":"2026-07-05T10:43:29Z"}],"graph_snapshots":[{"event_id":"sha256:0b5b2f61f4097ca9c192e983b1c50bb59c0ceabf5fd9210e4d3026db2e901d04","target":"graph","created_at":"2026-07-05T10:43:29Z","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/2504.01748/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Cas OB5 is an OB association located at a distance of 2.5-3 kpc that intercepts the Perseus spiral arm. It carries a moderate amount of reddening ($A_V \\sim$ 2-3 mag) and contains several well-known open clusters within its boundaries, such as King 12, NGC 7788, and NGC 7790. The availability of modern clustering algorithms, together with \\textit{Gaia} DR3 kinematics and complementary spectroscopic data, makes it a suitable site for studies of Galactic structure. We seek to quantify the spatial scale of star formation in the spiral arms, using Cas OB5 as a pilot target before extending our stu","authors_text":"Alexis L. Quintana, Ignacio Negueruela, Sara R. Berlanas","cross_cats":["astro-ph.SR"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-02T14:00:29Z","title":"Quantifying the scale of star formation across the Perseus spiral arm using young clusters around Cas OB5"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.01748","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":"sha256:956109a5f3ac64c6ff8b9ef4ae60ff4f234c6f1fac5cdc01da4d1ae0bfafcdaa","target":"record","created_at":"2026-07-05T10:43:29Z","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":"ee155a9ce2852cf4b4dd89ed774e27c41114d34a155a4b3741dcc2bb3f375f10","cross_cats_sorted":["astro-ph.SR"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-04-02T14:00:29Z","title_canon_sha256":"89bf6cad0a192c9d90b19901e890360f9a4611e8e468495895baca5fb44bbf8f"},"schema_version":"1.0","source":{"id":"2504.01748","kind":"arxiv","version":1}},"canonical_sha256":"3f86aa840fdd6f25ca1a970d05ebc7cce7343861ffbd37e34fa7cc7cc938ea49","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3f86aa840fdd6f25ca1a970d05ebc7cce7343861ffbd37e34fa7cc7cc938ea49","first_computed_at":"2026-07-05T10:43:29.324141Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:43:29.324141Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vO+toThjntaWh1J6hpqTno12xvZLS0wG6hD5emmFseTY7EBbvKXmqbFFnVXNYC/jnDsuiJX0ttQCQ84JcoslDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T10:43:29.324591Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.01748","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:956109a5f3ac64c6ff8b9ef4ae60ff4f234c6f1fac5cdc01da4d1ae0bfafcdaa","sha256:0b5b2f61f4097ca9c192e983b1c50bb59c0ceabf5fd9210e4d3026db2e901d04"],"state_sha256":"1124cce03deb52dfa9bad44db2af0b64bd6746ca96e1d53f298d1fbd8dba1b7c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uH2+xqmMheVVnA7KIN2vdkvspbYgSm6xTvWomswPWm+Fw6xEp0kU4exKEATq+uNF3e0HrLPqik2qQlpxd0rvAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-11T14:55:43.989068Z","bundle_sha256":"f99f8cafe8ea153424cca3b06453874605fba21076e6987275d826e6a04cb4f6"}}