{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZT3RLVJWWVEAD35Z5FE3FRW5LE","short_pith_number":"pith:ZT3RLVJW","canonical_record":{"source":{"id":"1407.6905","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-25T14:06:51Z","cross_cats_sorted":[],"title_canon_sha256":"0c4472c333bdbe0771e4ae03765c394999b2431330b82f5c0b007878ad00da16","abstract_canon_sha256":"a44859519c73d87ea86ead79629e727bf4246e245dfd02e64784a7d0f8a6344a"},"schema_version":"1.0"},"canonical_sha256":"ccf715d536b54801efb9e949b2c6dd5935f8b218f97ab43d70139d4f4e4e9855","source":{"kind":"arxiv","id":"1407.6905","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.6905","created_at":"2026-05-18T01:42:30Z"},{"alias_kind":"arxiv_version","alias_value":"1407.6905v1","created_at":"2026-05-18T01:42:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.6905","created_at":"2026-05-18T01:42:30Z"},{"alias_kind":"pith_short_12","alias_value":"ZT3RLVJWWVEA","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZT3RLVJWWVEAD35Z","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZT3RLVJW","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZT3RLVJWWVEAD35Z5FE3FRW5LE","target":"record","payload":{"canonical_record":{"source":{"id":"1407.6905","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-25T14:06:51Z","cross_cats_sorted":[],"title_canon_sha256":"0c4472c333bdbe0771e4ae03765c394999b2431330b82f5c0b007878ad00da16","abstract_canon_sha256":"a44859519c73d87ea86ead79629e727bf4246e245dfd02e64784a7d0f8a6344a"},"schema_version":"1.0"},"canonical_sha256":"ccf715d536b54801efb9e949b2c6dd5935f8b218f97ab43d70139d4f4e4e9855","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:30.011866Z","signature_b64":"rtCQ2g6O2jYENpY9wg0hgWUzuDCAUfsUFN7TEYIEC5qXc4Xu8MwDI05mXdpUVvY7kdaQ5vxxmFJUOQWutAV6CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ccf715d536b54801efb9e949b2c6dd5935f8b218f97ab43d70139d4f4e4e9855","last_reissued_at":"2026-05-18T01:42:30.011342Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:30.011342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.6905","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":"2026-05-18T01:42:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fOA2XELNltnmd4ujZSy4wS1N+l25W2dN5h4oWY+cwCNraYg+5RBU7mx7B2en4Gg6v4nygeIRnKzNw9Xr3DvMBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T00:46:52.410927Z"},"content_sha256":"817cb4694b343bab96ad031f9009bb82784bbd2214d06c3f4d8aa6b2f6d29584","schema_version":"1.0","event_id":"sha256:817cb4694b343bab96ad031f9009bb82784bbd2214d06c3f4d8aa6b2f6d29584"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZT3RLVJWWVEAD35Z5FE3FRW5LE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chemical evolution models: GRB host identification and cosmic dust predictions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"F. Calura, F. Longo, F. Matteucci, S. Boissier, V. D'Elia, V. Grieco","submitted_at":"2014-07-25T14:06:51Z","abstract_excerpt":"The nature of some GRB host galaxies has been investigated by means of chemical evolution models of galaxies of different morphological type following the evolution of the abundances of H, He, C, N, O, $\\alpha$-elements, Ni, Fe, Zn, and including also the evolution of dust. By comparing predictions with abundance data, we were able to constrain nature and age of GRB hosts. We also computed a theoretical cosmic dust rate, including stellar dust production, accretion and destruction, under the hypotheses of pure luminosity evolution and strong number density evolution of galaxies. We suggest tha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.6905","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":""},"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":"2026-05-18T01:42:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iEVA4ZMuWI4ZFWLSLkNJ+cp90ZlxHVDEuLZ2stFB09jSyrPs00C73dw9OG+3Nw2eAbwqpR2eOHQ8akb1YpqYDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T00:46:52.411349Z"},"content_sha256":"3ed09b1106491930ccd28acc1d7160e62e875ccaffd0a3aa6a18e41dbc00d48f","schema_version":"1.0","event_id":"sha256:3ed09b1106491930ccd28acc1d7160e62e875ccaffd0a3aa6a18e41dbc00d48f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZT3RLVJWWVEAD35Z5FE3FRW5LE/bundle.json","state_url":"https://pith.science/pith/ZT3RLVJWWVEAD35Z5FE3FRW5LE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZT3RLVJWWVEAD35Z5FE3FRW5LE/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":"2026-08-03T00:46:52Z","links":{"resolver":"https://pith.science/pith/ZT3RLVJWWVEAD35Z5FE3FRW5LE","bundle":"https://pith.science/pith/ZT3RLVJWWVEAD35Z5FE3FRW5LE/bundle.json","state":"https://pith.science/pith/ZT3RLVJWWVEAD35Z5FE3FRW5LE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZT3RLVJWWVEAD35Z5FE3FRW5LE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZT3RLVJWWVEAD35Z5FE3FRW5LE","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":"a44859519c73d87ea86ead79629e727bf4246e245dfd02e64784a7d0f8a6344a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-25T14:06:51Z","title_canon_sha256":"0c4472c333bdbe0771e4ae03765c394999b2431330b82f5c0b007878ad00da16"},"schema_version":"1.0","source":{"id":"1407.6905","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.6905","created_at":"2026-05-18T01:42:30Z"},{"alias_kind":"arxiv_version","alias_value":"1407.6905v1","created_at":"2026-05-18T01:42:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.6905","created_at":"2026-05-18T01:42:30Z"},{"alias_kind":"pith_short_12","alias_value":"ZT3RLVJWWVEA","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZT3RLVJWWVEAD35Z","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZT3RLVJW","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:3ed09b1106491930ccd28acc1d7160e62e875ccaffd0a3aa6a18e41dbc00d48f","target":"graph","created_at":"2026-05-18T01:42:30Z","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"},"paper":{"abstract_excerpt":"The nature of some GRB host galaxies has been investigated by means of chemical evolution models of galaxies of different morphological type following the evolution of the abundances of H, He, C, N, O, $\\alpha$-elements, Ni, Fe, Zn, and including also the evolution of dust. By comparing predictions with abundance data, we were able to constrain nature and age of GRB hosts. We also computed a theoretical cosmic dust rate, including stellar dust production, accretion and destruction, under the hypotheses of pure luminosity evolution and strong number density evolution of galaxies. We suggest tha","authors_text":"F. Calura, F. Longo, F. Matteucci, S. Boissier, V. D'Elia, V. Grieco","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-25T14:06:51Z","title":"Chemical evolution models: GRB host identification and cosmic dust predictions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.6905","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":"sha256:817cb4694b343bab96ad031f9009bb82784bbd2214d06c3f4d8aa6b2f6d29584","target":"record","created_at":"2026-05-18T01:42:30Z","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":"a44859519c73d87ea86ead79629e727bf4246e245dfd02e64784a7d0f8a6344a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-25T14:06:51Z","title_canon_sha256":"0c4472c333bdbe0771e4ae03765c394999b2431330b82f5c0b007878ad00da16"},"schema_version":"1.0","source":{"id":"1407.6905","kind":"arxiv","version":1}},"canonical_sha256":"ccf715d536b54801efb9e949b2c6dd5935f8b218f97ab43d70139d4f4e4e9855","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ccf715d536b54801efb9e949b2c6dd5935f8b218f97ab43d70139d4f4e4e9855","first_computed_at":"2026-05-18T01:42:30.011342Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:30.011342Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rtCQ2g6O2jYENpY9wg0hgWUzuDCAUfsUFN7TEYIEC5qXc4Xu8MwDI05mXdpUVvY7kdaQ5vxxmFJUOQWutAV6CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:30.011866Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.6905","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:817cb4694b343bab96ad031f9009bb82784bbd2214d06c3f4d8aa6b2f6d29584","sha256:3ed09b1106491930ccd28acc1d7160e62e875ccaffd0a3aa6a18e41dbc00d48f"],"state_sha256":"e93c5d66939414b68a886ec270b91432547832f06a32b89b4ad58603ff3b18d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6ial6O1/m3v++qBmYmEJVHuU7v6s4xwYx+ieixQ2yTv5blIEx/2VC6+M4byDss/cxkHHWDfjOOGQnN2+/SFDDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T00:46:52.413865Z","bundle_sha256":"27ff9e7570ad2ec3c48f1296474f1bb7ec862539169af3ba2630d7095dee9662"}}