{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:O4BE4UOWS3KUQSLZYXMB6T2LOU","short_pith_number":"pith:O4BE4UOW","canonical_record":{"source":{"id":"2306.14100","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-06-25T02:39:19Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"54581d15d412064496bea7c022ccff15a3c284384f1b0b53377f2f1558bb5909","abstract_canon_sha256":"0ec7f6a5574b5b0a35fb6b8d4a0623de210d3beddfe688950d90272af2979c7d"},"schema_version":"1.0"},"canonical_sha256":"77024e51d696d5484979c5d81f4f4b7518e0a3edd9ae6793be3477403546e743","source":{"kind":"arxiv","id":"2306.14100","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.14100","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"arxiv_version","alias_value":"2306.14100v1","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.14100","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_12","alias_value":"O4BE4UOWS3KU","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_16","alias_value":"O4BE4UOWS3KUQSLZ","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_8","alias_value":"O4BE4UOW","created_at":"2026-07-05T06:24:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:O4BE4UOWS3KUQSLZYXMB6T2LOU","target":"record","payload":{"canonical_record":{"source":{"id":"2306.14100","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-06-25T02:39:19Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"54581d15d412064496bea7c022ccff15a3c284384f1b0b53377f2f1558bb5909","abstract_canon_sha256":"0ec7f6a5574b5b0a35fb6b8d4a0623de210d3beddfe688950d90272af2979c7d"},"schema_version":"1.0"},"canonical_sha256":"77024e51d696d5484979c5d81f4f4b7518e0a3edd9ae6793be3477403546e743","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:24:20.027823Z","signature_b64":"mcWk6rN9IHxFBfV52wZs9cv/zbbaYFK6xe9OIbtdU42JaHcy0DetYmF6NUIhczu8w7It2/F5+nK/cUSVVp1qAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"77024e51d696d5484979c5d81f4f4b7518e0a3edd9ae6793be3477403546e743","last_reissued_at":"2026-07-05T06:24:20.027435Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:24:20.027435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2306.14100","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":"2026-07-05T06:24:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xt4pDys8fI8bm/QjKi0JuQHVIUxDg3j2XtznwZ+DOFB8fHOUio92ds8KvR3alrXeaZ9aUfhU2eKyvjIQ/V+tAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:33:26.361234Z"},"content_sha256":"7c2ce7e79ebf8330212b39a4ed6fe524697c827513603a6444a49ca36e2a3b10","schema_version":"1.0","event_id":"sha256:7c2ce7e79ebf8330212b39a4ed6fe524697c827513603a6444a49ca36e2a3b10"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:O4BE4UOWS3KUQSLZYXMB6T2LOU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unusual integrated metallicity profile of our Milky Way","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Annalisa Pillepich (MPIA), Gail Zasowski (University of Utah), Jianhui Lian (Yunnan Uni./SWIFAR, Maria Bergemann (MPIA), MPIA), Richard R. Lane (Universidad Bernardo O'Higgins)","submitted_at":"2023-06-25T02:39:19Z","abstract_excerpt":"The heavy element abundance profiles in galaxies place stringent constraint on galaxy growth and assembly history. Low-redshift galaxies generally have a negative metallicity gradient in their gas and stars. Such gradients are thought to be a natural manifestation of galaxy inside-out formation. As the Milky Way is currently the only spiral galaxy in which we can measure temporally-resolved chemical abundances, it enables unique insights into the origin of metallicity gradients and their correlation with the growth history of galaxies. However, until now, these unique abundance profiles had no"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.14100","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/2306.14100/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":"2026-07-05T06:24:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uAIWIuVcvEWNbNcWGJ0j9Z+SXlpG6Ee8TgPgTLpFttKnaC9VHgROezTPSxoVCmbQa/b7Fi57mkxUkB49eue3BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:33:26.361609Z"},"content_sha256":"d9677a836bed022e52e169131cee196132e983fba4388f7fd377deebacfc31f3","schema_version":"1.0","event_id":"sha256:d9677a836bed022e52e169131cee196132e983fba4388f7fd377deebacfc31f3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O4BE4UOWS3KUQSLZYXMB6T2LOU/bundle.json","state_url":"https://pith.science/pith/O4BE4UOWS3KUQSLZYXMB6T2LOU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O4BE4UOWS3KUQSLZYXMB6T2LOU/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":"2026-08-03T20:33:26Z","links":{"resolver":"https://pith.science/pith/O4BE4UOWS3KUQSLZYXMB6T2LOU","bundle":"https://pith.science/pith/O4BE4UOWS3KUQSLZYXMB6T2LOU/bundle.json","state":"https://pith.science/pith/O4BE4UOWS3KUQSLZYXMB6T2LOU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O4BE4UOWS3KUQSLZYXMB6T2LOU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:O4BE4UOWS3KUQSLZYXMB6T2LOU","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":"0ec7f6a5574b5b0a35fb6b8d4a0623de210d3beddfe688950d90272af2979c7d","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-06-25T02:39:19Z","title_canon_sha256":"54581d15d412064496bea7c022ccff15a3c284384f1b0b53377f2f1558bb5909"},"schema_version":"1.0","source":{"id":"2306.14100","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2306.14100","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"arxiv_version","alias_value":"2306.14100v1","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2306.14100","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_12","alias_value":"O4BE4UOWS3KU","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_16","alias_value":"O4BE4UOWS3KUQSLZ","created_at":"2026-07-05T06:24:20Z"},{"alias_kind":"pith_short_8","alias_value":"O4BE4UOW","created_at":"2026-07-05T06:24:20Z"}],"graph_snapshots":[{"event_id":"sha256:d9677a836bed022e52e169131cee196132e983fba4388f7fd377deebacfc31f3","target":"graph","created_at":"2026-07-05T06:24:20Z","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/2306.14100/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The heavy element abundance profiles in galaxies place stringent constraint on galaxy growth and assembly history. Low-redshift galaxies generally have a negative metallicity gradient in their gas and stars. Such gradients are thought to be a natural manifestation of galaxy inside-out formation. As the Milky Way is currently the only spiral galaxy in which we can measure temporally-resolved chemical abundances, it enables unique insights into the origin of metallicity gradients and their correlation with the growth history of galaxies. However, until now, these unique abundance profiles had no","authors_text":"Annalisa Pillepich (MPIA), Gail Zasowski (University of Utah), Jianhui Lian (Yunnan Uni./SWIFAR, Maria Bergemann (MPIA), MPIA), Richard R. Lane (Universidad Bernardo O'Higgins)","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-06-25T02:39:19Z","title":"Unusual integrated metallicity profile of our Milky Way"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2306.14100","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":"sha256:7c2ce7e79ebf8330212b39a4ed6fe524697c827513603a6444a49ca36e2a3b10","target":"record","created_at":"2026-07-05T06:24:20Z","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":"0ec7f6a5574b5b0a35fb6b8d4a0623de210d3beddfe688950d90272af2979c7d","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2023-06-25T02:39:19Z","title_canon_sha256":"54581d15d412064496bea7c022ccff15a3c284384f1b0b53377f2f1558bb5909"},"schema_version":"1.0","source":{"id":"2306.14100","kind":"arxiv","version":1}},"canonical_sha256":"77024e51d696d5484979c5d81f4f4b7518e0a3edd9ae6793be3477403546e743","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"77024e51d696d5484979c5d81f4f4b7518e0a3edd9ae6793be3477403546e743","first_computed_at":"2026-07-05T06:24:20.027435Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:24:20.027435Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mcWk6rN9IHxFBfV52wZs9cv/zbbaYFK6xe9OIbtdU42JaHcy0DetYmF6NUIhczu8w7It2/F5+nK/cUSVVp1qAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:24:20.027823Z","signed_message":"canonical_sha256_bytes"},"source_id":"2306.14100","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7c2ce7e79ebf8330212b39a4ed6fe524697c827513603a6444a49ca36e2a3b10","sha256:d9677a836bed022e52e169131cee196132e983fba4388f7fd377deebacfc31f3"],"state_sha256":"8becafc63ffd1ddba3c96999e82e834e4c10e8adbf3c05b24fa2b027ae4167ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"m9K4O/fUOHIoWq7wyFCrIeJcKWtlgEbQdqi6tH7m3jzMF3UawXOswLX3k5xS/CPJa1DuHHgv88fxu39icY9FAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T20:33:26.363938Z","bundle_sha256":"643b397028b7813a8d67d4a211371ac5a9ebd4c41eb92c912bbf61aeffed6080"}}