{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:YWUTSE7ZF5HQIROEAYWEO7IVIN","short_pith_number":"pith:YWUTSE7Z","canonical_record":{"source":{"id":"2202.03449","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-02-07T19:00:09Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"1db973bdee9ed3bdd196d67a1587a68a646d7a056a99e3da5d9da9ca1c4f87c0","abstract_canon_sha256":"07be189d78efa139164ce9711f22765ed7c90a8b766ee67ef48ba56a738d219d"},"schema_version":"1.0"},"canonical_sha256":"c5a93913f92f4f0445c4062c477d154378bfade71a1b339a9290f48d97ff60e1","source":{"kind":"arxiv","id":"2202.03449","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.03449","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"arxiv_version","alias_value":"2202.03449v1","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.03449","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"pith_short_12","alias_value":"YWUTSE7ZF5HQ","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"pith_short_16","alias_value":"YWUTSE7ZF5HQIROE","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"pith_short_8","alias_value":"YWUTSE7Z","created_at":"2026-07-05T04:09:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:YWUTSE7ZF5HQIROEAYWEO7IVIN","target":"record","payload":{"canonical_record":{"source":{"id":"2202.03449","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-02-07T19:00:09Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"1db973bdee9ed3bdd196d67a1587a68a646d7a056a99e3da5d9da9ca1c4f87c0","abstract_canon_sha256":"07be189d78efa139164ce9711f22765ed7c90a8b766ee67ef48ba56a738d219d"},"schema_version":"1.0"},"canonical_sha256":"c5a93913f92f4f0445c4062c477d154378bfade71a1b339a9290f48d97ff60e1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:09:47.655744Z","signature_b64":"nDysQnyRkLDchiIQpCRtUOMr35uGXZbnOQ1NjvK4RfKEb/IhqgiW0A3ILQ1x7RjXk6gLv+jTZ2M9yPIGRxIKBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5a93913f92f4f0445c4062c477d154378bfade71a1b339a9290f48d97ff60e1","last_reissued_at":"2026-07-05T04:09:47.655271Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:09:47.655271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.03449","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":"2026-07-05T04:09:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c/7I/qhFh1DjR0ewoJRsqpyrmZUUBOZUfflYjkn+D62mCiU8JGYrbXrLnIHGauhBT7Mh9greFD/iJc+gSRJ5CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:36:58.534931Z"},"content_sha256":"220ef64b1c1186c33f906eb2edbabb108f7e57cca27c171597ad2bed1f38e92d","schema_version":"1.0","event_id":"sha256:220ef64b1c1186c33f906eb2edbabb108f7e57cca27c171597ad2bed1f38e92d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:YWUTSE7ZF5HQIROEAYWEO7IVIN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Physical Properties of the Host Galaxies of Ca-rich Transients","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"A. E. Nugent, A. Polin, B. Subrayan, D. Milisavljevic, J. Banovetz, J. Leja, J. M. Reynolds, R. Margutti, S. K. Sarbadhicary, W. V. Jacobson-Galan, Y. Dong","submitted_at":"2022-02-07T19:00:09Z","abstract_excerpt":"Calcium-rich (Ca-rich) transients are a new class of supernovae (SNe) that are known for their comparatively rapid evolution, modest peak luminosities, and strong nebular calcium emission lines. Currently, the progenitor systems of Ca-rich transients remain unknown. Although they exhibit spectroscopic properties not unlike core-collapse Type Ib/c SNe, nearly half are found in the outskirts of their host galaxies that are predominantly elliptical, suggesting a closer connection to the older stellar populations of SNe Ia. In this paper, we present a compilation of publicly available multiwavelen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.03449","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/2202.03449/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":"2026-07-05T04:09:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s4xukox7U+VhBL/Jn7TfDb1M+MkaKXs41wIkPvbAqrlDa9x2HTudUzmQiHk9nBQSfLx6SsQW2O1BsFUTyHxpBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:36:58.535439Z"},"content_sha256":"c86cc5c47055fcf2596157ac491043a3d4d73a6ee1073fe4025f52a0f9e045b5","schema_version":"1.0","event_id":"sha256:c86cc5c47055fcf2596157ac491043a3d4d73a6ee1073fe4025f52a0f9e045b5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YWUTSE7ZF5HQIROEAYWEO7IVIN/bundle.json","state_url":"https://pith.science/pith/YWUTSE7ZF5HQIROEAYWEO7IVIN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YWUTSE7ZF5HQIROEAYWEO7IVIN/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":"2026-08-03T15:36:58Z","links":{"resolver":"https://pith.science/pith/YWUTSE7ZF5HQIROEAYWEO7IVIN","bundle":"https://pith.science/pith/YWUTSE7ZF5HQIROEAYWEO7IVIN/bundle.json","state":"https://pith.science/pith/YWUTSE7ZF5HQIROEAYWEO7IVIN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YWUTSE7ZF5HQIROEAYWEO7IVIN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:YWUTSE7ZF5HQIROEAYWEO7IVIN","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":"07be189d78efa139164ce9711f22765ed7c90a8b766ee67ef48ba56a738d219d","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-02-07T19:00:09Z","title_canon_sha256":"1db973bdee9ed3bdd196d67a1587a68a646d7a056a99e3da5d9da9ca1c4f87c0"},"schema_version":"1.0","source":{"id":"2202.03449","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.03449","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"arxiv_version","alias_value":"2202.03449v1","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.03449","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"pith_short_12","alias_value":"YWUTSE7ZF5HQ","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"pith_short_16","alias_value":"YWUTSE7ZF5HQIROE","created_at":"2026-07-05T04:09:47Z"},{"alias_kind":"pith_short_8","alias_value":"YWUTSE7Z","created_at":"2026-07-05T04:09:47Z"}],"graph_snapshots":[{"event_id":"sha256:c86cc5c47055fcf2596157ac491043a3d4d73a6ee1073fe4025f52a0f9e045b5","target":"graph","created_at":"2026-07-05T04:09:47Z","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/2202.03449/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Calcium-rich (Ca-rich) transients are a new class of supernovae (SNe) that are known for their comparatively rapid evolution, modest peak luminosities, and strong nebular calcium emission lines. Currently, the progenitor systems of Ca-rich transients remain unknown. Although they exhibit spectroscopic properties not unlike core-collapse Type Ib/c SNe, nearly half are found in the outskirts of their host galaxies that are predominantly elliptical, suggesting a closer connection to the older stellar populations of SNe Ia. In this paper, we present a compilation of publicly available multiwavelen","authors_text":"A. E. Nugent, A. Polin, B. Subrayan, D. Milisavljevic, J. Banovetz, J. Leja, J. M. Reynolds, R. Margutti, S. K. Sarbadhicary, W. V. Jacobson-Galan, Y. Dong","cross_cats":["astro-ph.GA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-02-07T19:00:09Z","title":"Physical Properties of the Host Galaxies of Ca-rich Transients"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.03449","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":"sha256:220ef64b1c1186c33f906eb2edbabb108f7e57cca27c171597ad2bed1f38e92d","target":"record","created_at":"2026-07-05T04:09:47Z","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":"07be189d78efa139164ce9711f22765ed7c90a8b766ee67ef48ba56a738d219d","cross_cats_sorted":["astro-ph.GA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2022-02-07T19:00:09Z","title_canon_sha256":"1db973bdee9ed3bdd196d67a1587a68a646d7a056a99e3da5d9da9ca1c4f87c0"},"schema_version":"1.0","source":{"id":"2202.03449","kind":"arxiv","version":1}},"canonical_sha256":"c5a93913f92f4f0445c4062c477d154378bfade71a1b339a9290f48d97ff60e1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c5a93913f92f4f0445c4062c477d154378bfade71a1b339a9290f48d97ff60e1","first_computed_at":"2026-07-05T04:09:47.655271Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:09:47.655271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nDysQnyRkLDchiIQpCRtUOMr35uGXZbnOQ1NjvK4RfKEb/IhqgiW0A3ILQ1x7RjXk6gLv+jTZ2M9yPIGRxIKBg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:09:47.655744Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.03449","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:220ef64b1c1186c33f906eb2edbabb108f7e57cca27c171597ad2bed1f38e92d","sha256:c86cc5c47055fcf2596157ac491043a3d4d73a6ee1073fe4025f52a0f9e045b5"],"state_sha256":"f9e707692c929a22479522a8c9ccc1ec47c3eb23d6eab329a102fe07f08a8c71"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sMw1KnYygZJtXSa2XXJrXrAx4ux9ETZOJ9Bp/yR56eQ/CDoqzWoPN395MI/mKG6bRmDSwetbYH02fKRe0JpMCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T15:36:58.541020Z","bundle_sha256":"80d564741c91009a0d2f878eac92ee321f96d7a2de2ab66ef5a9c446ea1e88aa"}}