{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:PV23VRMDWISMFH3XJ3VYE6ICN2","short_pith_number":"pith:PV23VRMD","canonical_record":{"source":{"id":"2109.13650","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-09-28T12:14:12Z","cross_cats_sorted":[],"title_canon_sha256":"35fa8388104c0613cde74403e84e7976c5ae73cfde4206e3130f8be970f4d3f7","abstract_canon_sha256":"8e2949610e69c2fe9be8a8cf96d6bcfe1aa902a034db7135d996bfb4b5a3e1cc"},"schema_version":"1.0"},"canonical_sha256":"7d75bac583b224c29f774eeb8279026e8acf5d72965d4fb637c7dd6bdeee4a85","source":{"kind":"arxiv","id":"2109.13650","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.13650","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"arxiv_version","alias_value":"2109.13650v1","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.13650","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"pith_short_12","alias_value":"PV23VRMDWISM","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"pith_short_16","alias_value":"PV23VRMDWISMFH3X","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"pith_short_8","alias_value":"PV23VRMD","created_at":"2026-07-05T03:18:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:PV23VRMDWISMFH3XJ3VYE6ICN2","target":"record","payload":{"canonical_record":{"source":{"id":"2109.13650","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-09-28T12:14:12Z","cross_cats_sorted":[],"title_canon_sha256":"35fa8388104c0613cde74403e84e7976c5ae73cfde4206e3130f8be970f4d3f7","abstract_canon_sha256":"8e2949610e69c2fe9be8a8cf96d6bcfe1aa902a034db7135d996bfb4b5a3e1cc"},"schema_version":"1.0"},"canonical_sha256":"7d75bac583b224c29f774eeb8279026e8acf5d72965d4fb637c7dd6bdeee4a85","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:18:05.042668Z","signature_b64":"8hD/V1X4arvdnqm1/H+ItapriRM/Au9e87eYuQQvtxl2D2qSgGbayV4tbjJvEpHcijqAe1yXbzLvqPniSW1sDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d75bac583b224c29f774eeb8279026e8acf5d72965d4fb637c7dd6bdeee4a85","last_reissued_at":"2026-07-05T03:18:05.042277Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:18:05.042277Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2109.13650","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":"2026-07-05T03:18:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6VBOkX4YFxpv2OE7FxOY93lLdNY3rSldWlHY8kkLd6xA34EWst8e0QA4gt2HZ9Jr+OxsV/QlWEYB+R6PMdc2Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T12:56:03.715558Z"},"content_sha256":"ebc9ed7aa4df7d53ca7e0c1e09d969106cb8a35be2228c8b341c5887c59597af","schema_version":"1.0","event_id":"sha256:ebc9ed7aa4df7d53ca7e0c1e09d969106cb8a35be2228c8b341c5887c59597af"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:PV23VRMDWISMFH3XJ3VYE6ICN2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hydrogen and deuterium charging of site-specific specimen for atom probe tomography","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Baptiste Gault, Heena Khanchandani, Leigh T. Stephenson, Rama Srinivas Varanasi, Se-Ho Kim, TS Prithiv","submitted_at":"2021-09-28T12:14:12Z","abstract_excerpt":"Hydrogen embrittlement can cause a dramatic deterioration of the mechanical properties of high-strength metallic materials. Despite decades of experimental and modelling studies, the exact underlying mechanisms behind hydrogen embrittlement remain elusive. To unlock understanding of the mechanism and thereby help mitigate the influence of hydrogen and the associated embrittlement, it is essential to examine the interactions of hydrogen with structural defects such as grain boundaries, dislocations and stacking faults. Atom probe tomography (APT) can, in principle, analyse hydrogen located spec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.13650","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/2109.13650/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":"2026-07-05T03:18:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fz9PBJLAOKfOwacZ2FfEN+7srW88POxYLgE8GgzSi73jqTXlkXCTYkfXuiK/hbfnNbdwbHMnDuYTTrTR2gzfDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T12:56:03.716421Z"},"content_sha256":"2d78445ec216576e6eeb8e2e231d4d3ea56957dbc605cce6ef608ac124fa8356","schema_version":"1.0","event_id":"sha256:2d78445ec216576e6eeb8e2e231d4d3ea56957dbc605cce6ef608ac124fa8356"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PV23VRMDWISMFH3XJ3VYE6ICN2/bundle.json","state_url":"https://pith.science/pith/PV23VRMDWISMFH3XJ3VYE6ICN2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PV23VRMDWISMFH3XJ3VYE6ICN2/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":"2026-08-18T12:56:03Z","links":{"resolver":"https://pith.science/pith/PV23VRMDWISMFH3XJ3VYE6ICN2","bundle":"https://pith.science/pith/PV23VRMDWISMFH3XJ3VYE6ICN2/bundle.json","state":"https://pith.science/pith/PV23VRMDWISMFH3XJ3VYE6ICN2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PV23VRMDWISMFH3XJ3VYE6ICN2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:PV23VRMDWISMFH3XJ3VYE6ICN2","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":"8e2949610e69c2fe9be8a8cf96d6bcfe1aa902a034db7135d996bfb4b5a3e1cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-09-28T12:14:12Z","title_canon_sha256":"35fa8388104c0613cde74403e84e7976c5ae73cfde4206e3130f8be970f4d3f7"},"schema_version":"1.0","source":{"id":"2109.13650","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2109.13650","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"arxiv_version","alias_value":"2109.13650v1","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2109.13650","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"pith_short_12","alias_value":"PV23VRMDWISM","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"pith_short_16","alias_value":"PV23VRMDWISMFH3X","created_at":"2026-07-05T03:18:05Z"},{"alias_kind":"pith_short_8","alias_value":"PV23VRMD","created_at":"2026-07-05T03:18:05Z"}],"graph_snapshots":[{"event_id":"sha256:2d78445ec216576e6eeb8e2e231d4d3ea56957dbc605cce6ef608ac124fa8356","target":"graph","created_at":"2026-07-05T03:18:05Z","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/2109.13650/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hydrogen embrittlement can cause a dramatic deterioration of the mechanical properties of high-strength metallic materials. Despite decades of experimental and modelling studies, the exact underlying mechanisms behind hydrogen embrittlement remain elusive. To unlock understanding of the mechanism and thereby help mitigate the influence of hydrogen and the associated embrittlement, it is essential to examine the interactions of hydrogen with structural defects such as grain boundaries, dislocations and stacking faults. Atom probe tomography (APT) can, in principle, analyse hydrogen located spec","authors_text":"Baptiste Gault, Heena Khanchandani, Leigh T. Stephenson, Rama Srinivas Varanasi, Se-Ho Kim, TS Prithiv","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-09-28T12:14:12Z","title":"Hydrogen and deuterium charging of site-specific specimen for atom probe tomography"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2109.13650","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:ebc9ed7aa4df7d53ca7e0c1e09d969106cb8a35be2228c8b341c5887c59597af","target":"record","created_at":"2026-07-05T03:18:05Z","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":"8e2949610e69c2fe9be8a8cf96d6bcfe1aa902a034db7135d996bfb4b5a3e1cc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2021-09-28T12:14:12Z","title_canon_sha256":"35fa8388104c0613cde74403e84e7976c5ae73cfde4206e3130f8be970f4d3f7"},"schema_version":"1.0","source":{"id":"2109.13650","kind":"arxiv","version":1}},"canonical_sha256":"7d75bac583b224c29f774eeb8279026e8acf5d72965d4fb637c7dd6bdeee4a85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d75bac583b224c29f774eeb8279026e8acf5d72965d4fb637c7dd6bdeee4a85","first_computed_at":"2026-07-05T03:18:05.042277Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:18:05.042277Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8hD/V1X4arvdnqm1/H+ItapriRM/Au9e87eYuQQvtxl2D2qSgGbayV4tbjJvEpHcijqAe1yXbzLvqPniSW1sDg==","signature_status":"signed_v1","signed_at":"2026-07-05T03:18:05.042668Z","signed_message":"canonical_sha256_bytes"},"source_id":"2109.13650","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ebc9ed7aa4df7d53ca7e0c1e09d969106cb8a35be2228c8b341c5887c59597af","sha256:2d78445ec216576e6eeb8e2e231d4d3ea56957dbc605cce6ef608ac124fa8356"],"state_sha256":"648cd8bcd2dc795bc9a6eef756854d92aac0ce4b50542f27eaf9cf10ed8169ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZRknRPdrAohoBwfXDfkH/qZGpm+xBih2+m1cRCkxR815e7cCTobcM1oW5d6s0jJEs7jJd40XyI7C9sH8E56MDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T12:56:03.721639Z","bundle_sha256":"f4b670f966c119454db38215e5d156103d9b3fd97963784fe3f529f7af3e20cb"}}