{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:VVU6GNT24RODI7RWSCW7JDIIGX","short_pith_number":"pith:VVU6GNT2","canonical_record":{"source":{"id":"2404.07769","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2024-04-11T14:07:03Z","cross_cats_sorted":[],"title_canon_sha256":"f005114ede49532fd0062c6394b2eb6cbe382bba6fd8abd65e7535aa40e77f2f","abstract_canon_sha256":"ab2af1897328e11dc00a82ae4473b562653b001865e09a15b9527677d7f81f62"},"schema_version":"1.0"},"canonical_sha256":"ad69e3367ae45c347e3690adf48d0835c981ad843a9e879ea1d0eb51aaf8cd12","source":{"kind":"arxiv","id":"2404.07769","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.07769","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"arxiv_version","alias_value":"2404.07769v1","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.07769","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"pith_short_12","alias_value":"VVU6GNT24ROD","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"pith_short_16","alias_value":"VVU6GNT24RODI7RW","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"pith_short_8","alias_value":"VVU6GNT2","created_at":"2026-07-05T08:06:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:VVU6GNT24RODI7RWSCW7JDIIGX","target":"record","payload":{"canonical_record":{"source":{"id":"2404.07769","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2024-04-11T14:07:03Z","cross_cats_sorted":[],"title_canon_sha256":"f005114ede49532fd0062c6394b2eb6cbe382bba6fd8abd65e7535aa40e77f2f","abstract_canon_sha256":"ab2af1897328e11dc00a82ae4473b562653b001865e09a15b9527677d7f81f62"},"schema_version":"1.0"},"canonical_sha256":"ad69e3367ae45c347e3690adf48d0835c981ad843a9e879ea1d0eb51aaf8cd12","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:06:57.463631Z","signature_b64":"xEqri/91K+TQGKGm4G4BLLFzMZfWiUPOBALMpAk2vuc4xPjH0jFHQO5TsYHC3ab2bvm12J0tgs43jw/NZUwoCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ad69e3367ae45c347e3690adf48d0835c981ad843a9e879ea1d0eb51aaf8cd12","last_reissued_at":"2026-07-05T08:06:57.463005Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:06:57.463005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.07769","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":"2026-07-05T08:06:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7tYJLujVW2Jc7ajKvpSQ6sk79a5BCAROVOskP1/tERO4x7nUUvQ+0nzefn4eEmmqxPvOEQ2Zdtv05lI3RSVMDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-21T00:42:59.954143Z"},"content_sha256":"20bfc9adbefa83211d5b4b94992d5d5e3c561dc6a11c88376a24ca5c556145d9","schema_version":"1.0","event_id":"sha256:20bfc9adbefa83211d5b4b94992d5d5e3c561dc6a11c88376a24ca5c556145d9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:VVU6GNT24RODI7RWSCW7JDIIGX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Coupling nanoscopic tomography and micromagnetic modelling to assess the stability of geomagnetic recorders","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.geo-ph","authors_text":"Ana Diaz, Douglas Galante, Ricardo Ivan Ferreira Trindade, Ualisson Donardelli Bellon, Wyn Williams","submitted_at":"2024-04-11T14:07:03Z","abstract_excerpt":"The recording of planetary magnetic fields is often attributed to uniformly-magnetised nanoscopic iron oxides, called single-domain (SD). Yet, the main magnetic constituents of rocks are more complex, non-uniformly magnetised grains in single or multi-vortex states. We know little about their behaviour due to limitations in defining their precise shape and internal magnetic structure. We propose a novel approach combining non-destructive synchrotron-based ptychographic nanotomography with micromagnetic modelling to explore the magnetic stability of remanence-bearing minerals. Applied to a micr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.07769","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/2404.07769/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":"2026-07-05T08:06:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IcCyNC5LFjEs5pxRWOkuvzSVL67JEsGGr3G1/8leJqcGmM9tYgzSCe173ZHLbKtYc1DlEMZushqW3OzgTxD4Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-21T00:42:59.954546Z"},"content_sha256":"6813d9f1d1b83489ff0f6b3bc184d7d676497a9d4f32695b6eb3a95f4cf65761","schema_version":"1.0","event_id":"sha256:6813d9f1d1b83489ff0f6b3bc184d7d676497a9d4f32695b6eb3a95f4cf65761"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VVU6GNT24RODI7RWSCW7JDIIGX/bundle.json","state_url":"https://pith.science/pith/VVU6GNT24RODI7RWSCW7JDIIGX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VVU6GNT24RODI7RWSCW7JDIIGX/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":"2026-07-21T00:42:59Z","links":{"resolver":"https://pith.science/pith/VVU6GNT24RODI7RWSCW7JDIIGX","bundle":"https://pith.science/pith/VVU6GNT24RODI7RWSCW7JDIIGX/bundle.json","state":"https://pith.science/pith/VVU6GNT24RODI7RWSCW7JDIIGX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VVU6GNT24RODI7RWSCW7JDIIGX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:VVU6GNT24RODI7RWSCW7JDIIGX","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":"ab2af1897328e11dc00a82ae4473b562653b001865e09a15b9527677d7f81f62","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2024-04-11T14:07:03Z","title_canon_sha256":"f005114ede49532fd0062c6394b2eb6cbe382bba6fd8abd65e7535aa40e77f2f"},"schema_version":"1.0","source":{"id":"2404.07769","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.07769","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"arxiv_version","alias_value":"2404.07769v1","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.07769","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"pith_short_12","alias_value":"VVU6GNT24ROD","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"pith_short_16","alias_value":"VVU6GNT24RODI7RW","created_at":"2026-07-05T08:06:57Z"},{"alias_kind":"pith_short_8","alias_value":"VVU6GNT2","created_at":"2026-07-05T08:06:57Z"}],"graph_snapshots":[{"event_id":"sha256:6813d9f1d1b83489ff0f6b3bc184d7d676497a9d4f32695b6eb3a95f4cf65761","target":"graph","created_at":"2026-07-05T08:06:57Z","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/2404.07769/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The recording of planetary magnetic fields is often attributed to uniformly-magnetised nanoscopic iron oxides, called single-domain (SD). Yet, the main magnetic constituents of rocks are more complex, non-uniformly magnetised grains in single or multi-vortex states. We know little about their behaviour due to limitations in defining their precise shape and internal magnetic structure. We propose a novel approach combining non-destructive synchrotron-based ptychographic nanotomography with micromagnetic modelling to explore the magnetic stability of remanence-bearing minerals. Applied to a micr","authors_text":"Ana Diaz, Douglas Galante, Ricardo Ivan Ferreira Trindade, Ualisson Donardelli Bellon, Wyn Williams","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2024-04-11T14:07:03Z","title":"Coupling nanoscopic tomography and micromagnetic modelling to assess the stability of geomagnetic recorders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.07769","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":"sha256:20bfc9adbefa83211d5b4b94992d5d5e3c561dc6a11c88376a24ca5c556145d9","target":"record","created_at":"2026-07-05T08:06:57Z","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":"ab2af1897328e11dc00a82ae4473b562653b001865e09a15b9527677d7f81f62","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.geo-ph","submitted_at":"2024-04-11T14:07:03Z","title_canon_sha256":"f005114ede49532fd0062c6394b2eb6cbe382bba6fd8abd65e7535aa40e77f2f"},"schema_version":"1.0","source":{"id":"2404.07769","kind":"arxiv","version":1}},"canonical_sha256":"ad69e3367ae45c347e3690adf48d0835c981ad843a9e879ea1d0eb51aaf8cd12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ad69e3367ae45c347e3690adf48d0835c981ad843a9e879ea1d0eb51aaf8cd12","first_computed_at":"2026-07-05T08:06:57.463005Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:06:57.463005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xEqri/91K+TQGKGm4G4BLLFzMZfWiUPOBALMpAk2vuc4xPjH0jFHQO5TsYHC3ab2bvm12J0tgs43jw/NZUwoCA==","signature_status":"signed_v1","signed_at":"2026-07-05T08:06:57.463631Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.07769","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:20bfc9adbefa83211d5b4b94992d5d5e3c561dc6a11c88376a24ca5c556145d9","sha256:6813d9f1d1b83489ff0f6b3bc184d7d676497a9d4f32695b6eb3a95f4cf65761"],"state_sha256":"9b940c05ca739aa5a6deb5cd0704f137360137ad462f4552ca5dbae767efbd05"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0lt6mQiss5Wn0jYNq8edMYewCqIIvRkkfdic1qd07moMaG7a/S7dsQtNV5fp70e/TwnG6JJ1E/SftXJDgegUAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-21T00:42:59.957199Z","bundle_sha256":"892a82c39b96e356d0c0e47919e39a42dfb280ded1dda35dead10bd79d2b11b8"}}