{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:NBSWFJ7ZCEJ3UZZG2YHADO26EK","short_pith_number":"pith:NBSWFJ7Z","canonical_record":{"source":{"id":"1304.6602","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-24T14:35:34Z","cross_cats_sorted":[],"title_canon_sha256":"49154c975c2ab2924988ae4285481723aefe23dc87848983b0ed4f682a2873bd","abstract_canon_sha256":"31bc704e6ef7c8d11de3ef5b4a687e1efc479cde748508c31a136e2c3d69304c"},"schema_version":"1.0"},"canonical_sha256":"686562a7f91113ba6726d60e01bb5e22b8f8244933be47a6099c22723466d2cd","source":{"kind":"arxiv","id":"1304.6602","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.6602","created_at":"2026-05-18T03:22:18Z"},{"alias_kind":"arxiv_version","alias_value":"1304.6602v2","created_at":"2026-05-18T03:22:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.6602","created_at":"2026-05-18T03:22:18Z"},{"alias_kind":"pith_short_12","alias_value":"NBSWFJ7ZCEJ3","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NBSWFJ7ZCEJ3UZZG","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NBSWFJ7Z","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:NBSWFJ7ZCEJ3UZZG2YHADO26EK","target":"record","payload":{"canonical_record":{"source":{"id":"1304.6602","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-24T14:35:34Z","cross_cats_sorted":[],"title_canon_sha256":"49154c975c2ab2924988ae4285481723aefe23dc87848983b0ed4f682a2873bd","abstract_canon_sha256":"31bc704e6ef7c8d11de3ef5b4a687e1efc479cde748508c31a136e2c3d69304c"},"schema_version":"1.0"},"canonical_sha256":"686562a7f91113ba6726d60e01bb5e22b8f8244933be47a6099c22723466d2cd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:22:18.309825Z","signature_b64":"HEBeRtCSsko8DgQzJfmdZuDemDG+96C8C6xyawvlxWlfbo2Ocuivn/BlHnvbPWbwGWcGj2NsF5dAiye0KAtIBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"686562a7f91113ba6726d60e01bb5e22b8f8244933be47a6099c22723466d2cd","last_reissued_at":"2026-05-18T03:22:18.309282Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:22:18.309282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.6602","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":"2026-05-18T03:22:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4YiKSp84L4S1QpiSd8An7OigBP+zPIQ1FTuGociWipJGbTcc92i/pPjpIhvGcJFGjK6zy+5cBMmfyO86Ymb2BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:33:38.309817Z"},"content_sha256":"dd4e59479f573c562bb155ea20f9a1cb1f76d7345e8844e1d1dfd50a684c437d","schema_version":"1.0","event_id":"sha256:dd4e59479f573c562bb155ea20f9a1cb1f76d7345e8844e1d1dfd50a684c437d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:NBSWFJ7ZCEJ3UZZG2YHADO26EK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Onset of Differentiation and Internal Evolution: the case of 21 Lutetia","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"C. Federico, D. Turrini, F. Capaccioni, M. C. De Sanctis, M. Formisano","submitted_at":"2013-04-24T14:35:34Z","abstract_excerpt":"Asteroid 21 Lutetia, visited by the Rosetta spacecraft, plays a crucial role in the reconstruction of primordial phases of planetary objects. Its high bulk density and its primitive chondritic crust (Weiss et al. 2011) suggest that Lutetia could be partially differentiated. We developed a numerical code, also used for studying the geophysical history of Vesta (Formisano et al., submitted), to explore several scenarios of internal evolution of Lutetia, differing in the strength of radiogenic sources and in the global post-sintering porosity. The only significant heat source for partial differen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.6602","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":""},"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":"2026-05-18T03:22:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9QSbZiwRCVdT4L5s1MVsu/er0iUE+6H7/y0FGiVBpJgO/9jWZ4+/OzHpE5+lwazm2woOZ4UXg/GxmOnBHUuzAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T15:33:38.310501Z"},"content_sha256":"fd0b6ada01647491bbbf396d5633f443ba1a90206aa3c295befc7353334af864","schema_version":"1.0","event_id":"sha256:fd0b6ada01647491bbbf396d5633f443ba1a90206aa3c295befc7353334af864"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NBSWFJ7ZCEJ3UZZG2YHADO26EK/bundle.json","state_url":"https://pith.science/pith/NBSWFJ7ZCEJ3UZZG2YHADO26EK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NBSWFJ7ZCEJ3UZZG2YHADO26EK/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":"2026-05-29T15:33:38Z","links":{"resolver":"https://pith.science/pith/NBSWFJ7ZCEJ3UZZG2YHADO26EK","bundle":"https://pith.science/pith/NBSWFJ7ZCEJ3UZZG2YHADO26EK/bundle.json","state":"https://pith.science/pith/NBSWFJ7ZCEJ3UZZG2YHADO26EK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NBSWFJ7ZCEJ3UZZG2YHADO26EK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:NBSWFJ7ZCEJ3UZZG2YHADO26EK","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":"31bc704e6ef7c8d11de3ef5b4a687e1efc479cde748508c31a136e2c3d69304c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-24T14:35:34Z","title_canon_sha256":"49154c975c2ab2924988ae4285481723aefe23dc87848983b0ed4f682a2873bd"},"schema_version":"1.0","source":{"id":"1304.6602","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.6602","created_at":"2026-05-18T03:22:18Z"},{"alias_kind":"arxiv_version","alias_value":"1304.6602v2","created_at":"2026-05-18T03:22:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.6602","created_at":"2026-05-18T03:22:18Z"},{"alias_kind":"pith_short_12","alias_value":"NBSWFJ7ZCEJ3","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NBSWFJ7ZCEJ3UZZG","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NBSWFJ7Z","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:fd0b6ada01647491bbbf396d5633f443ba1a90206aa3c295befc7353334af864","target":"graph","created_at":"2026-05-18T03:22:18Z","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":"Asteroid 21 Lutetia, visited by the Rosetta spacecraft, plays a crucial role in the reconstruction of primordial phases of planetary objects. Its high bulk density and its primitive chondritic crust (Weiss et al. 2011) suggest that Lutetia could be partially differentiated. We developed a numerical code, also used for studying the geophysical history of Vesta (Formisano et al., submitted), to explore several scenarios of internal evolution of Lutetia, differing in the strength of radiogenic sources and in the global post-sintering porosity. The only significant heat source for partial differen","authors_text":"C. Federico, D. Turrini, F. Capaccioni, M. C. De Sanctis, M. Formisano","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-24T14:35:34Z","title":"The Onset of Differentiation and Internal Evolution: the case of 21 Lutetia"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.6602","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:dd4e59479f573c562bb155ea20f9a1cb1f76d7345e8844e1d1dfd50a684c437d","target":"record","created_at":"2026-05-18T03:22:18Z","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":"31bc704e6ef7c8d11de3ef5b4a687e1efc479cde748508c31a136e2c3d69304c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-04-24T14:35:34Z","title_canon_sha256":"49154c975c2ab2924988ae4285481723aefe23dc87848983b0ed4f682a2873bd"},"schema_version":"1.0","source":{"id":"1304.6602","kind":"arxiv","version":2}},"canonical_sha256":"686562a7f91113ba6726d60e01bb5e22b8f8244933be47a6099c22723466d2cd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"686562a7f91113ba6726d60e01bb5e22b8f8244933be47a6099c22723466d2cd","first_computed_at":"2026-05-18T03:22:18.309282Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:22:18.309282Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HEBeRtCSsko8DgQzJfmdZuDemDG+96C8C6xyawvlxWlfbo2Ocuivn/BlHnvbPWbwGWcGj2NsF5dAiye0KAtIBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:22:18.309825Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.6602","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd4e59479f573c562bb155ea20f9a1cb1f76d7345e8844e1d1dfd50a684c437d","sha256:fd0b6ada01647491bbbf396d5633f443ba1a90206aa3c295befc7353334af864"],"state_sha256":"8b73582b4abd8bfd863729fcfb715700a266661bb48d49b850ad7c1ddde993ac"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+YS8hhYXI3KjupiLXDo3ZISVjXe30BD2Mb5dXaXmJTF+4sjDklWK1Htk71nhl7Aw6CH5tv38ftqh9HxFRxh4Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T15:33:38.314231Z","bundle_sha256":"61bbe1c81faf0308d521e6adc726c6099962ddff2ea702277df19eca8db48891"}}