{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:PLI7NIL4I3HAI7EETURLWV6FGD","short_pith_number":"pith:PLI7NIL4","canonical_record":{"source":{"id":"2006.00458","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-05-31T08:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"fb04ed6fcd3337c4e7788b756c53c2abd53a3ce10a46b94a9c9756c177b816f4","abstract_canon_sha256":"da4b323aee4e2b8a6d30a808e1fc98184cd46b1e03bb4f1863d2eb787e2f002e"},"schema_version":"1.0"},"canonical_sha256":"7ad1f6a17c46ce047c849d22bb57c530e4dfde67082d3f86eaad1c1b45564636","source":{"kind":"arxiv","id":"2006.00458","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.00458","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"arxiv_version","alias_value":"2006.00458v1","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.00458","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"pith_short_12","alias_value":"PLI7NIL4I3HA","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"pith_short_16","alias_value":"PLI7NIL4I3HAI7EE","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"pith_short_8","alias_value":"PLI7NIL4","created_at":"2026-07-05T01:07:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:PLI7NIL4I3HAI7EETURLWV6FGD","target":"record","payload":{"canonical_record":{"source":{"id":"2006.00458","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-05-31T08:00:10Z","cross_cats_sorted":[],"title_canon_sha256":"fb04ed6fcd3337c4e7788b756c53c2abd53a3ce10a46b94a9c9756c177b816f4","abstract_canon_sha256":"da4b323aee4e2b8a6d30a808e1fc98184cd46b1e03bb4f1863d2eb787e2f002e"},"schema_version":"1.0"},"canonical_sha256":"7ad1f6a17c46ce047c849d22bb57c530e4dfde67082d3f86eaad1c1b45564636","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:07:01.780127Z","signature_b64":"D88gyhewjpEwqKAHet0oGZAbk+LtSv5uaULSodhCxbP9SsNGchPL80Q6wAF2EfDWozZiDciz/6fyu+OlzlW8Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ad1f6a17c46ce047c849d22bb57c530e4dfde67082d3f86eaad1c1b45564636","last_reissued_at":"2026-07-05T01:07:01.779693Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:07:01.779693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.00458","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":"2026-07-05T01:07:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+6qxfTK9p+nIwpBaoblfq61Aedf8HCDrHHdVIaqiGfi3lQjs9CExsUecO8M2UQ7s/6vfNtwlHpYloEvvXdbQCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T16:16:03.319517Z"},"content_sha256":"13d8d11e89ef181d6c44b8cedc69edb28c9171b55402baaf2bd602e4b3d39da0","schema_version":"1.0","event_id":"sha256:13d8d11e89ef181d6c44b8cedc69edb28c9171b55402baaf2bd602e4b3d39da0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:PLI7NIL4I3HAI7EETURLWV6FGD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hydrogen permeation on defected {\\alpha}-Al2O3 surfaces: DFT calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Man Jiang, Xueyan Wang, Zhangcan Yang","submitted_at":"2020-05-31T08:00:10Z","abstract_excerpt":"One of the key challenges to realize controlled fusion energy is tritium self-sufficiency. The application of hydrogen permeation barrier (HPB) is considered to be necessary for tritium self-sufficiency. {\\alpha}-Al2O3 is currently a candidate material for HPB. However, a crucial issue for {\\alpha}-Al2O3 is that its permeability reduction factor (PRF) will dramatically drop after ion or neutron irradiations. At present, little is known about the relevant mechanism. In order to shed light on this issue, the kinetics and energetic changes of hydrogen on defected {\\alpha}-Al2O3 surfaces in compar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.00458","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/2006.00458/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":"2026-07-05T01:07:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W575L6kSxKfFFmgeO2L2tcNZsw/9YZkW4aFwBQ5PKc35+zc7XdZqCFGkzpXiFVnjNKa+qwZzeTNBkdlRaNLJAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T16:16:03.319890Z"},"content_sha256":"b042da5d1d67f5aed181b35784e93448b2792c4d7dd8ce8fa2421d723243132e","schema_version":"1.0","event_id":"sha256:b042da5d1d67f5aed181b35784e93448b2792c4d7dd8ce8fa2421d723243132e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PLI7NIL4I3HAI7EETURLWV6FGD/bundle.json","state_url":"https://pith.science/pith/PLI7NIL4I3HAI7EETURLWV6FGD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PLI7NIL4I3HAI7EETURLWV6FGD/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":"2026-07-06T16:16:03Z","links":{"resolver":"https://pith.science/pith/PLI7NIL4I3HAI7EETURLWV6FGD","bundle":"https://pith.science/pith/PLI7NIL4I3HAI7EETURLWV6FGD/bundle.json","state":"https://pith.science/pith/PLI7NIL4I3HAI7EETURLWV6FGD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PLI7NIL4I3HAI7EETURLWV6FGD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:PLI7NIL4I3HAI7EETURLWV6FGD","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":"da4b323aee4e2b8a6d30a808e1fc98184cd46b1e03bb4f1863d2eb787e2f002e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-05-31T08:00:10Z","title_canon_sha256":"fb04ed6fcd3337c4e7788b756c53c2abd53a3ce10a46b94a9c9756c177b816f4"},"schema_version":"1.0","source":{"id":"2006.00458","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.00458","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"arxiv_version","alias_value":"2006.00458v1","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.00458","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"pith_short_12","alias_value":"PLI7NIL4I3HA","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"pith_short_16","alias_value":"PLI7NIL4I3HAI7EE","created_at":"2026-07-05T01:07:01Z"},{"alias_kind":"pith_short_8","alias_value":"PLI7NIL4","created_at":"2026-07-05T01:07:01Z"}],"graph_snapshots":[{"event_id":"sha256:b042da5d1d67f5aed181b35784e93448b2792c4d7dd8ce8fa2421d723243132e","target":"graph","created_at":"2026-07-05T01:07:01Z","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/2006.00458/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"One of the key challenges to realize controlled fusion energy is tritium self-sufficiency. The application of hydrogen permeation barrier (HPB) is considered to be necessary for tritium self-sufficiency. {\\alpha}-Al2O3 is currently a candidate material for HPB. However, a crucial issue for {\\alpha}-Al2O3 is that its permeability reduction factor (PRF) will dramatically drop after ion or neutron irradiations. At present, little is known about the relevant mechanism. In order to shed light on this issue, the kinetics and energetic changes of hydrogen on defected {\\alpha}-Al2O3 surfaces in compar","authors_text":"Man Jiang, Xueyan Wang, Zhangcan Yang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-05-31T08:00:10Z","title":"Hydrogen permeation on defected {\\alpha}-Al2O3 surfaces: DFT calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.00458","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":"sha256:13d8d11e89ef181d6c44b8cedc69edb28c9171b55402baaf2bd602e4b3d39da0","target":"record","created_at":"2026-07-05T01:07:01Z","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":"da4b323aee4e2b8a6d30a808e1fc98184cd46b1e03bb4f1863d2eb787e2f002e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2020-05-31T08:00:10Z","title_canon_sha256":"fb04ed6fcd3337c4e7788b756c53c2abd53a3ce10a46b94a9c9756c177b816f4"},"schema_version":"1.0","source":{"id":"2006.00458","kind":"arxiv","version":1}},"canonical_sha256":"7ad1f6a17c46ce047c849d22bb57c530e4dfde67082d3f86eaad1c1b45564636","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ad1f6a17c46ce047c849d22bb57c530e4dfde67082d3f86eaad1c1b45564636","first_computed_at":"2026-07-05T01:07:01.779693Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:07:01.779693Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D88gyhewjpEwqKAHet0oGZAbk+LtSv5uaULSodhCxbP9SsNGchPL80Q6wAF2EfDWozZiDciz/6fyu+OlzlW8Ag==","signature_status":"signed_v1","signed_at":"2026-07-05T01:07:01.780127Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.00458","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:13d8d11e89ef181d6c44b8cedc69edb28c9171b55402baaf2bd602e4b3d39da0","sha256:b042da5d1d67f5aed181b35784e93448b2792c4d7dd8ce8fa2421d723243132e"],"state_sha256":"178bf0f58ef1e5a2889cccbfc16f7dc2b1761162be93f22861d6f44faeda51fb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i6egSgzepXoYP7mulv63PlrVPp/kwAlI0s9OnKcG14jiHhpYdCwa7gFkeZTSHMACsCaNGxF8WHeBCpJMelBnAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T16:16:03.321854Z","bundle_sha256":"6da1bf1ff99c43a3916af3fb08008d07e8e3619fea40f95b64077e898d7b0918"}}