{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:YYVVTKLYTRER35M2675QJVQ7OC","short_pith_number":"pith:YYVVTKLY","canonical_record":{"source":{"id":"2503.04925","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-06T19:54:55Z","cross_cats_sorted":[],"title_canon_sha256":"621d47443bddd7787a8cb6d039d18840427d2906c353db5b66d996a633ca43e7","abstract_canon_sha256":"ad244f6938194d35c97df4ef49534df69dea6a8723cc9d478044c3a3ff092282"},"schema_version":"1.0"},"canonical_sha256":"c62b59a9789c491df59af7fb04d61f70a944d5577fe153aaac93ba5e3199ee23","source":{"kind":"arxiv","id":"2503.04925","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.04925","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"arxiv_version","alias_value":"2503.04925v2","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.04925","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"pith_short_12","alias_value":"YYVVTKLYTRER","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"pith_short_16","alias_value":"YYVVTKLYTRER35M2","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"pith_short_8","alias_value":"YYVVTKLY","created_at":"2026-07-05T11:14:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:YYVVTKLYTRER35M2675QJVQ7OC","target":"record","payload":{"canonical_record":{"source":{"id":"2503.04925","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-06T19:54:55Z","cross_cats_sorted":[],"title_canon_sha256":"621d47443bddd7787a8cb6d039d18840427d2906c353db5b66d996a633ca43e7","abstract_canon_sha256":"ad244f6938194d35c97df4ef49534df69dea6a8723cc9d478044c3a3ff092282"},"schema_version":"1.0"},"canonical_sha256":"c62b59a9789c491df59af7fb04d61f70a944d5577fe153aaac93ba5e3199ee23","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:14:54.997024Z","signature_b64":"R2r1DzqIXUi1YK38u5zrcPGI9T+cekuoDwQXKVXZGFKRyIeOV3BF/8LcAYkljfn4pbMJ2Q2O+MgEImh+S6VYBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c62b59a9789c491df59af7fb04d61f70a944d5577fe153aaac93ba5e3199ee23","last_reissued_at":"2026-07-05T11:14:54.996610Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:14:54.996610Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2503.04925","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":"2026-07-05T11:14:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"063DlzHt0bspgsN3PC3jcFfJZSqhyhIdHBe4hCMsye/+uae3JzUwlWjuvWrc5LIO5BYO+pchLSIE0QzLUDlVAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:30:57.681250Z"},"content_sha256":"8b2302f22b7ee2ad465ee658ebf318d6f10364089695198bffc891dbb64c8e3d","schema_version":"1.0","event_id":"sha256:8b2302f22b7ee2ad465ee658ebf318d6f10364089695198bffc891dbb64c8e3d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:YYVVTKLYTRER35M2675QJVQ7OC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The mass-metallicity relation at z>3 down to M_*= 10^4 M_Sun. A local perspective using the metallicity distribution of RR Lyrae stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Garofalo, M. Bellazzini, T. Muraveva","submitted_at":"2025-03-06T19:54:55Z","abstract_excerpt":"The mass-metallicity relation (MZR) is a fundamental scale law of galaxies. It is observed to evolve with redshift in unresolved galaxies up to z>6. However, observational constraints limits our view at such early epochs to galaxies with M_* >= 10^7 M_Sun. On the other hand, in the local Universe the MZR can be traced down to the faintest end of the galaxy luminosity function (M_*= 10^2 M_Sun) but we have access only to its present-day realization. We propose to use RR Lyrae stars to get the mean metallicity of local dwarf galaxies at the early epoch in which these variable stars were formed ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.04925","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2503.04925/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":"2026-07-05T11:14:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lI8LuyyMkzqYoN9AfWi8BYWn2SF9mu+pEEl4yeFFOA1EyexVsIvbTMKQWtBVqdSH7rn4TtgK9BkP86GAaRZTBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T13:30:57.681654Z"},"content_sha256":"59335c79a96533aeb0f6bcadf88f03612561f22773e1c8a887a9dfc425e21be6","schema_version":"1.0","event_id":"sha256:59335c79a96533aeb0f6bcadf88f03612561f22773e1c8a887a9dfc425e21be6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YYVVTKLYTRER35M2675QJVQ7OC/bundle.json","state_url":"https://pith.science/pith/YYVVTKLYTRER35M2675QJVQ7OC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YYVVTKLYTRER35M2675QJVQ7OC/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":"2026-08-06T13:30:57Z","links":{"resolver":"https://pith.science/pith/YYVVTKLYTRER35M2675QJVQ7OC","bundle":"https://pith.science/pith/YYVVTKLYTRER35M2675QJVQ7OC/bundle.json","state":"https://pith.science/pith/YYVVTKLYTRER35M2675QJVQ7OC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YYVVTKLYTRER35M2675QJVQ7OC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:YYVVTKLYTRER35M2675QJVQ7OC","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":"ad244f6938194d35c97df4ef49534df69dea6a8723cc9d478044c3a3ff092282","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-06T19:54:55Z","title_canon_sha256":"621d47443bddd7787a8cb6d039d18840427d2906c353db5b66d996a633ca43e7"},"schema_version":"1.0","source":{"id":"2503.04925","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2503.04925","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"arxiv_version","alias_value":"2503.04925v2","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2503.04925","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"pith_short_12","alias_value":"YYVVTKLYTRER","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"pith_short_16","alias_value":"YYVVTKLYTRER35M2","created_at":"2026-07-05T11:14:54Z"},{"alias_kind":"pith_short_8","alias_value":"YYVVTKLY","created_at":"2026-07-05T11:14:54Z"}],"graph_snapshots":[{"event_id":"sha256:59335c79a96533aeb0f6bcadf88f03612561f22773e1c8a887a9dfc425e21be6","target":"graph","created_at":"2026-07-05T11:14:54Z","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/2503.04925/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The mass-metallicity relation (MZR) is a fundamental scale law of galaxies. It is observed to evolve with redshift in unresolved galaxies up to z>6. However, observational constraints limits our view at such early epochs to galaxies with M_* >= 10^7 M_Sun. On the other hand, in the local Universe the MZR can be traced down to the faintest end of the galaxy luminosity function (M_*= 10^2 M_Sun) but we have access only to its present-day realization. We propose to use RR Lyrae stars to get the mean metallicity of local dwarf galaxies at the early epoch in which these variable stars were formed (","authors_text":"A. Garofalo, M. Bellazzini, T. Muraveva","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-06T19:54:55Z","title":"The mass-metallicity relation at z>3 down to M_*= 10^4 M_Sun. A local perspective using the metallicity distribution of RR Lyrae stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2503.04925","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":"sha256:8b2302f22b7ee2ad465ee658ebf318d6f10364089695198bffc891dbb64c8e3d","target":"record","created_at":"2026-07-05T11:14:54Z","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":"ad244f6938194d35c97df4ef49534df69dea6a8723cc9d478044c3a3ff092282","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-03-06T19:54:55Z","title_canon_sha256":"621d47443bddd7787a8cb6d039d18840427d2906c353db5b66d996a633ca43e7"},"schema_version":"1.0","source":{"id":"2503.04925","kind":"arxiv","version":2}},"canonical_sha256":"c62b59a9789c491df59af7fb04d61f70a944d5577fe153aaac93ba5e3199ee23","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c62b59a9789c491df59af7fb04d61f70a944d5577fe153aaac93ba5e3199ee23","first_computed_at":"2026-07-05T11:14:54.996610Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:14:54.996610Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"R2r1DzqIXUi1YK38u5zrcPGI9T+cekuoDwQXKVXZGFKRyIeOV3BF/8LcAYkljfn4pbMJ2Q2O+MgEImh+S6VYBg==","signature_status":"signed_v1","signed_at":"2026-07-05T11:14:54.997024Z","signed_message":"canonical_sha256_bytes"},"source_id":"2503.04925","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8b2302f22b7ee2ad465ee658ebf318d6f10364089695198bffc891dbb64c8e3d","sha256:59335c79a96533aeb0f6bcadf88f03612561f22773e1c8a887a9dfc425e21be6"],"state_sha256":"4c11d6ececc8ed00e173f80d6fe3e6d9abccd878e339377690764e0ca6515fae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"r6MzKTVh9H6idolWgpklSmgUrsSv7RWPVm+t4gxMqSzG5fg7tvUO+JYMcSbn/eSxnK7F7nV2IZeJpJFkPa7bDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T13:30:57.686745Z","bundle_sha256":"ff8579d4c58e47cfc3c3b906deee55a175376251d08b4bd619764dde9d4c1810"}}