{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:6YAI3T6KZ7HYP3VIMQ2RIRQMU5","short_pith_number":"pith:6YAI3T6K","canonical_record":{"source":{"id":"2402.12427","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-02-19T19:00:00Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"b73fd4a3a95645f26e7ebaa3eb88664a8a7c1390f78589f4ae4907f4aac965c2","abstract_canon_sha256":"984f853d91cfeef7fe48dd8670f7d957056d09bb1bc276074d27fe7794186405"},"schema_version":"1.0"},"canonical_sha256":"f6008dcfcacfcf87eea8643514460ca759fda27fa78c5dcb06b8ba9b28337476","source":{"kind":"arxiv","id":"2402.12427","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.12427","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"arxiv_version","alias_value":"2402.12427v1","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.12427","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"pith_short_12","alias_value":"6YAI3T6KZ7HY","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"pith_short_16","alias_value":"6YAI3T6KZ7HYP3VI","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"pith_short_8","alias_value":"6YAI3T6K","created_at":"2026-07-05T08:21:13Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:6YAI3T6KZ7HYP3VIMQ2RIRQMU5","target":"record","payload":{"canonical_record":{"source":{"id":"2402.12427","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-02-19T19:00:00Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"b73fd4a3a95645f26e7ebaa3eb88664a8a7c1390f78589f4ae4907f4aac965c2","abstract_canon_sha256":"984f853d91cfeef7fe48dd8670f7d957056d09bb1bc276074d27fe7794186405"},"schema_version":"1.0"},"canonical_sha256":"f6008dcfcacfcf87eea8643514460ca759fda27fa78c5dcb06b8ba9b28337476","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:21:13.090407Z","signature_b64":"eYVt14Iy4LXK6pT10OL++BD7EQjk3zc1kFe0iZtsd7HzHpQxR46liKZqUeIU5ryiRCvumxs1ax49Th16VYL+Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6008dcfcacfcf87eea8643514460ca759fda27fa78c5dcb06b8ba9b28337476","last_reissued_at":"2026-07-05T08:21:13.089164Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:21:13.089164Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.12427","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":"2026-07-05T08:21:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J1WaUmiab72PsRfefBvedu4lUIjsRrvh/X7S+ZPgdij7LXjktzDIArqvllV7R817ye2ZBtNApOZZqDB9HL1oBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:33:11.007552Z"},"content_sha256":"2e0d5ce34ecbc7b42a07b8d0fa542d27b261e617fb0dfd7ff04da70f895fa313","schema_version":"1.0","event_id":"sha256:2e0d5ce34ecbc7b42a07b8d0fa542d27b261e617fb0dfd7ff04da70f895fa313"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:6YAI3T6KZ7HYP3VIMQ2RIRQMU5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"GalaPy, the highly optimised C++/Python spectral modelling tool for galaxies -- I. Library presentation and photometric fitting","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.GA","authors_text":"Alessandro Bressan, Andrea Cimatti, Andrea Lapi, Darko Donevski, Francesca Perrotta, Lara Pantoni, Laura Silva, Luigi Danese, Lumen Boco, Marcella Massardi, Margherita Talia, Marika Giulietti, Martina Torsello, Meriem Behiri, Quirino D'Amato, Tommaso Ronconi","submitted_at":"2024-02-19T19:00:00Z","abstract_excerpt":"Fostered by upcoming data from new generation observational campaigns, we are about to enter a new era for the study of how galaxies form and evolve. The unprecedented quantity of data that will be collected, from distances only marginally grasped up to now, will require analysis tools designed to target the specific physical peculiarities of the observed sources and handle extremely large datasets. One powerful method to investigate the complex astrophysical processes that govern the properties of galaxies is to model their observed spectral energy distribution (SED) at different stages of ev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.12427","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/2402.12427/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":"2026-07-05T08:21:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ElOmQFoHDFLj8k3nYCvdxasBMh1mszcf35FOlCGOXRmGraNxvvS68QIpm8QUZ7v0Gy/lbuYr6Z2ZzH6umUitCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:33:11.008012Z"},"content_sha256":"7e4f8219a0a9f4ebbfcc9f74388b523be5ef5aaab58a0fd29e7a6d5b415621c9","schema_version":"1.0","event_id":"sha256:7e4f8219a0a9f4ebbfcc9f74388b523be5ef5aaab58a0fd29e7a6d5b415621c9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6YAI3T6KZ7HYP3VIMQ2RIRQMU5/bundle.json","state_url":"https://pith.science/pith/6YAI3T6KZ7HYP3VIMQ2RIRQMU5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6YAI3T6KZ7HYP3VIMQ2RIRQMU5/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":"2026-08-05T18:33:11Z","links":{"resolver":"https://pith.science/pith/6YAI3T6KZ7HYP3VIMQ2RIRQMU5","bundle":"https://pith.science/pith/6YAI3T6KZ7HYP3VIMQ2RIRQMU5/bundle.json","state":"https://pith.science/pith/6YAI3T6KZ7HYP3VIMQ2RIRQMU5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6YAI3T6KZ7HYP3VIMQ2RIRQMU5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:6YAI3T6KZ7HYP3VIMQ2RIRQMU5","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":"984f853d91cfeef7fe48dd8670f7d957056d09bb1bc276074d27fe7794186405","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-02-19T19:00:00Z","title_canon_sha256":"b73fd4a3a95645f26e7ebaa3eb88664a8a7c1390f78589f4ae4907f4aac965c2"},"schema_version":"1.0","source":{"id":"2402.12427","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.12427","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"arxiv_version","alias_value":"2402.12427v1","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.12427","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"pith_short_12","alias_value":"6YAI3T6KZ7HY","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"pith_short_16","alias_value":"6YAI3T6KZ7HYP3VI","created_at":"2026-07-05T08:21:13Z"},{"alias_kind":"pith_short_8","alias_value":"6YAI3T6K","created_at":"2026-07-05T08:21:13Z"}],"graph_snapshots":[{"event_id":"sha256:7e4f8219a0a9f4ebbfcc9f74388b523be5ef5aaab58a0fd29e7a6d5b415621c9","target":"graph","created_at":"2026-07-05T08:21:13Z","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/2402.12427/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fostered by upcoming data from new generation observational campaigns, we are about to enter a new era for the study of how galaxies form and evolve. The unprecedented quantity of data that will be collected, from distances only marginally grasped up to now, will require analysis tools designed to target the specific physical peculiarities of the observed sources and handle extremely large datasets. One powerful method to investigate the complex astrophysical processes that govern the properties of galaxies is to model their observed spectral energy distribution (SED) at different stages of ev","authors_text":"Alessandro Bressan, Andrea Cimatti, Andrea Lapi, Darko Donevski, Francesca Perrotta, Lara Pantoni, Laura Silva, Luigi Danese, Lumen Boco, Marcella Massardi, Margherita Talia, Marika Giulietti, Martina Torsello, Meriem Behiri, Quirino D'Amato, Tommaso Ronconi","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-02-19T19:00:00Z","title":"GalaPy, the highly optimised C++/Python spectral modelling tool for galaxies -- I. Library presentation and photometric fitting"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.12427","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":"sha256:2e0d5ce34ecbc7b42a07b8d0fa542d27b261e617fb0dfd7ff04da70f895fa313","target":"record","created_at":"2026-07-05T08:21:13Z","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":"984f853d91cfeef7fe48dd8670f7d957056d09bb1bc276074d27fe7794186405","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-02-19T19:00:00Z","title_canon_sha256":"b73fd4a3a95645f26e7ebaa3eb88664a8a7c1390f78589f4ae4907f4aac965c2"},"schema_version":"1.0","source":{"id":"2402.12427","kind":"arxiv","version":1}},"canonical_sha256":"f6008dcfcacfcf87eea8643514460ca759fda27fa78c5dcb06b8ba9b28337476","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6008dcfcacfcf87eea8643514460ca759fda27fa78c5dcb06b8ba9b28337476","first_computed_at":"2026-07-05T08:21:13.089164Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:21:13.089164Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eYVt14Iy4LXK6pT10OL++BD7EQjk3zc1kFe0iZtsd7HzHpQxR46liKZqUeIU5ryiRCvumxs1ax49Th16VYL+Bw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:21:13.090407Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.12427","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2e0d5ce34ecbc7b42a07b8d0fa542d27b261e617fb0dfd7ff04da70f895fa313","sha256:7e4f8219a0a9f4ebbfcc9f74388b523be5ef5aaab58a0fd29e7a6d5b415621c9"],"state_sha256":"ce08322c3a82c448a51e294b66a31813f5932339bf9a6f23b5a8648d7044b6b1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GOjzo2yD1x5KbXrFZzy1A0Sja0soajOdyZkuLoAMcCPF6vFvLKBQsqLQ8b1GFafmr/BbtV0O0d62hwTa2Y8aCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T18:33:11.011785Z","bundle_sha256":"0808dc2188ddb321fbde8ffa7caa813af461147d151d63ef4a1d9f40a75e1132"}}