{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:YCZAHV6WP2MFZXIFTFNFGPJFR4","short_pith_number":"pith:YCZAHV6W","canonical_record":{"source":{"id":"2409.09118","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-09-13T18:00:01Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"01947be9978d0e849f4fd1c21d4eb9c887a63ddb857c41c1f131911f884f9449","abstract_canon_sha256":"a0787091fbb2e8ecba166092032709bd06d391cfbc39958af219a2501821233a"},"schema_version":"1.0"},"canonical_sha256":"c0b203d7d67e985cdd05995a533d258f0432afc0e2ef6d2480dc21f739b2e632","source":{"kind":"arxiv","id":"2409.09118","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.09118","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"arxiv_version","alias_value":"2409.09118v1","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.09118","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"pith_short_12","alias_value":"YCZAHV6WP2MF","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"pith_short_16","alias_value":"YCZAHV6WP2MFZXIF","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"pith_short_8","alias_value":"YCZAHV6W","created_at":"2026-07-05T09:07:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:YCZAHV6WP2MFZXIFTFNFGPJFR4","target":"record","payload":{"canonical_record":{"source":{"id":"2409.09118","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-09-13T18:00:01Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.SR"],"title_canon_sha256":"01947be9978d0e849f4fd1c21d4eb9c887a63ddb857c41c1f131911f884f9449","abstract_canon_sha256":"a0787091fbb2e8ecba166092032709bd06d391cfbc39958af219a2501821233a"},"schema_version":"1.0"},"canonical_sha256":"c0b203d7d67e985cdd05995a533d258f0432afc0e2ef6d2480dc21f739b2e632","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T09:07:05.278274Z","signature_b64":"4iVmu8p+FfTlL9y38Tw2ZC86l19UrKzQDvfU5caIgZkcPaTDRK0ZQ2DG6LV9a26dSg74IqevoGevwSVG3WCLBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c0b203d7d67e985cdd05995a533d258f0432afc0e2ef6d2480dc21f739b2e632","last_reissued_at":"2026-07-05T09:07:05.277820Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T09:07:05.277820Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2409.09118","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":"2026-07-05T09:07:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0F6hke2lrmIVA4DRvHncscwS2iaRUEtZHGXngRdyW8xIoCKWxM9MpBltFVFt0QAc3bJkizRUNnMEEMV3VYx3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T22:05:01.250122Z"},"content_sha256":"34f87ce64beca08f51481b0e1832079c6bb4d8d3b7aa3177da1d67df205bfaea","schema_version":"1.0","event_id":"sha256:34f87ce64beca08f51481b0e1832079c6bb4d8d3b7aa3177da1d67df205bfaea"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:YCZAHV6WP2MFZXIFTFNFGPJFR4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraining the Initial-Mass Function via Stellar Transients","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.GA","astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Andrea Lapi, Francesco Gabrielli, Giancarlo Ghirlanda, Lumen Boco, Mario Spera, Om Sharan Salafia, Ruben Salvaterra","submitted_at":"2024-09-13T18:00:01Z","abstract_excerpt":"The stellar initial-mass function (IMF) represents a fundamental quantity in astrophysics and cosmology, describing the mass distribution of stars from low to very-high masses. It is intimately linked to a wide variety of topics, including stellar and binary evolution, galaxy evolution, chemical enrichment, and cosmological reionization. Nonetheless, the IMF still remains highly uncertain. In this work, we aim at determining the IMF with a novel approach based on the observed rates of transients of stellar origin. We parametrize the IMF with a simple, but flexible, Larson shape, and insert it "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.09118","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/2409.09118/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":"2026-07-05T09:07:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MK5eDkEcxAujwQ4JEPMuGlEvloSLfPDN9AJK/IPOj/5Qc0nt1wsCQt/iLTLkD00z7NRGyvLwCIY3ArTUiTL8Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T22:05:01.250652Z"},"content_sha256":"1dfb8f4ac1eb21a37ef4cc61554adcbe44f60457508cd50f184a0382e178f8cd","schema_version":"1.0","event_id":"sha256:1dfb8f4ac1eb21a37ef4cc61554adcbe44f60457508cd50f184a0382e178f8cd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YCZAHV6WP2MFZXIFTFNFGPJFR4/bundle.json","state_url":"https://pith.science/pith/YCZAHV6WP2MFZXIFTFNFGPJFR4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YCZAHV6WP2MFZXIFTFNFGPJFR4/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":"2026-08-05T22:05:01Z","links":{"resolver":"https://pith.science/pith/YCZAHV6WP2MFZXIFTFNFGPJFR4","bundle":"https://pith.science/pith/YCZAHV6WP2MFZXIFTFNFGPJFR4/bundle.json","state":"https://pith.science/pith/YCZAHV6WP2MFZXIFTFNFGPJFR4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YCZAHV6WP2MFZXIFTFNFGPJFR4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:YCZAHV6WP2MFZXIFTFNFGPJFR4","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":"a0787091fbb2e8ecba166092032709bd06d391cfbc39958af219a2501821233a","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-09-13T18:00:01Z","title_canon_sha256":"01947be9978d0e849f4fd1c21d4eb9c887a63ddb857c41c1f131911f884f9449"},"schema_version":"1.0","source":{"id":"2409.09118","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.09118","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"arxiv_version","alias_value":"2409.09118v1","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.09118","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"pith_short_12","alias_value":"YCZAHV6WP2MF","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"pith_short_16","alias_value":"YCZAHV6WP2MFZXIF","created_at":"2026-07-05T09:07:05Z"},{"alias_kind":"pith_short_8","alias_value":"YCZAHV6W","created_at":"2026-07-05T09:07:05Z"}],"graph_snapshots":[{"event_id":"sha256:1dfb8f4ac1eb21a37ef4cc61554adcbe44f60457508cd50f184a0382e178f8cd","target":"graph","created_at":"2026-07-05T09:07:05Z","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/2409.09118/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The stellar initial-mass function (IMF) represents a fundamental quantity in astrophysics and cosmology, describing the mass distribution of stars from low to very-high masses. It is intimately linked to a wide variety of topics, including stellar and binary evolution, galaxy evolution, chemical enrichment, and cosmological reionization. Nonetheless, the IMF still remains highly uncertain. In this work, we aim at determining the IMF with a novel approach based on the observed rates of transients of stellar origin. We parametrize the IMF with a simple, but flexible, Larson shape, and insert it ","authors_text":"Andrea Lapi, Francesco Gabrielli, Giancarlo Ghirlanda, Lumen Boco, Mario Spera, Om Sharan Salafia, Ruben Salvaterra","cross_cats":["astro-ph.CO","astro-ph.GA","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-09-13T18:00:01Z","title":"Constraining the Initial-Mass Function via Stellar Transients"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.09118","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":"sha256:34f87ce64beca08f51481b0e1832079c6bb4d8d3b7aa3177da1d67df205bfaea","target":"record","created_at":"2026-07-05T09:07:05Z","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":"a0787091fbb2e8ecba166092032709bd06d391cfbc39958af219a2501821233a","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-09-13T18:00:01Z","title_canon_sha256":"01947be9978d0e849f4fd1c21d4eb9c887a63ddb857c41c1f131911f884f9449"},"schema_version":"1.0","source":{"id":"2409.09118","kind":"arxiv","version":1}},"canonical_sha256":"c0b203d7d67e985cdd05995a533d258f0432afc0e2ef6d2480dc21f739b2e632","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c0b203d7d67e985cdd05995a533d258f0432afc0e2ef6d2480dc21f739b2e632","first_computed_at":"2026-07-05T09:07:05.277820Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T09:07:05.277820Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4iVmu8p+FfTlL9y38Tw2ZC86l19UrKzQDvfU5caIgZkcPaTDRK0ZQ2DG6LV9a26dSg74IqevoGevwSVG3WCLBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T09:07:05.278274Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.09118","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34f87ce64beca08f51481b0e1832079c6bb4d8d3b7aa3177da1d67df205bfaea","sha256:1dfb8f4ac1eb21a37ef4cc61554adcbe44f60457508cd50f184a0382e178f8cd"],"state_sha256":"2062d72a26db5f812a4e2876c85e7727e8f46f61a0c587f3c9beccecc86ccd8c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ss4P0I6A59gQELBpxwfi+CZX7tZ7xp11xuMGu3kGPR0q1/guOeZ6JE0vmiiz6kA8gLskLZjCTsqrUF5DXgDJDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T22:05:01.256968Z","bundle_sha256":"fde9a41337b4c9fe02f2f177aae9bf34b44127b8ba24452c31cc1c3fac304102"}}