{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:NRVONX3SSUW72M7QWXHJB67UCN","short_pith_number":"pith:NRVONX3S","canonical_record":{"source":{"id":"1309.2169","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"physics.geo-ph","submitted_at":"2013-09-09T14:20:35Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"f7127ced25c8e7c6874a68eff3830cf2dca14baf57bbfd1cb738ccaa2067f901","abstract_canon_sha256":"f9a2c278400f109163ad76cc1eed7d9a51811e288744e4bd0a63970a319d06ec"},"schema_version":"1.0"},"canonical_sha256":"6c6ae6df72952dfd33f0b5ce90fbf41344484ca66dfc6bcbbe5cf473b1c687d5","source":{"kind":"arxiv","id":"1309.2169","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.2169","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"arxiv_version","alias_value":"1309.2169v4","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.2169","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"pith_short_12","alias_value":"NRVONX3SSUW7","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NRVONX3SSUW72M7Q","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NRVONX3S","created_at":"2026-05-18T12:27:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:NRVONX3SSUW72M7QWXHJB67UCN","target":"record","payload":{"canonical_record":{"source":{"id":"1309.2169","kind":"arxiv","version":4},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"physics.geo-ph","submitted_at":"2013-09-09T14:20:35Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"f7127ced25c8e7c6874a68eff3830cf2dca14baf57bbfd1cb738ccaa2067f901","abstract_canon_sha256":"f9a2c278400f109163ad76cc1eed7d9a51811e288744e4bd0a63970a319d06ec"},"schema_version":"1.0"},"canonical_sha256":"6c6ae6df72952dfd33f0b5ce90fbf41344484ca66dfc6bcbbe5cf473b1c687d5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:49:02.005007Z","signature_b64":"qsYqb8qoHGWJKPUXudViSFIoM2pxBjs4hndiaEHLzOjKV6U6H4Tc1id+DAe6MI4cwuKoYaIDUWeuAkQDV+3sDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6c6ae6df72952dfd33f0b5ce90fbf41344484ca66dfc6bcbbe5cf473b1c687d5","last_reissued_at":"2026-05-18T02:49:02.004494Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:49:02.004494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.2169","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:49:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PmkV6pIEjrE8sShDa1OC6jRanyupytJ+VsoLpbJuh5p9hLPPgkJ/sPUg2/sF3ugtEpqHlYuMXlAXuJrYP8QlDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:35:48.402098Z"},"content_sha256":"56340e8212fbc9ea1bfe831c9a47f1be303e4e2a89a0b05fd38e737e6cafa9d0","schema_version":"1.0","event_id":"sha256:56340e8212fbc9ea1bfe831c9a47f1be303e4e2a89a0b05fd38e737e6cafa9d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:NRVONX3SSUW72M7QWXHJB67UCN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Xenon Reacts with Iron at the Conditions of the Earth's Core","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.geo-ph","authors_text":"Chris J. Pickard, Guangtian Zou, Hanyu Liu, Li Zhu, Yanming Ma","submitted_at":"2013-09-09T14:20:35Z","abstract_excerpt":"Studies of the Earth's atmosphere have shown that more than 90% of xenon (Xe) is depleted compared with its abundance in chondritic meteorites. This long-standing missing Xe paradox has become the subject of considerable interest and several models for a Xe reservoir have been proposed. Whether the missing Xe is hiding in the Earth's core has remained a long unanswered question. The key to address this issue lies in the reactivity of Xe with iron (Fe, the main constituent of the Earth's core), which has been denied by earlier studies. Here we report on the first evidence of the chemical reacti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.2169","kind":"arxiv","version":4},"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":"2026-05-18T02:49:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1ixvmnli23vSStcnG5qaJJ+x4QfR+1XvqynuqQUwI0w07Fp7m0+3RUJL+7zgrCrymBXyru7/Lep8Xs4+1r9qCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T22:35:48.402829Z"},"content_sha256":"0f97c1a0775181fbe78ab9d3d346e4890e9ebee02ddd33582c04039f5d4686d0","schema_version":"1.0","event_id":"sha256:0f97c1a0775181fbe78ab9d3d346e4890e9ebee02ddd33582c04039f5d4686d0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NRVONX3SSUW72M7QWXHJB67UCN/bundle.json","state_url":"https://pith.science/pith/NRVONX3SSUW72M7QWXHJB67UCN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NRVONX3SSUW72M7QWXHJB67UCN/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":"2026-06-10T22:35:48Z","links":{"resolver":"https://pith.science/pith/NRVONX3SSUW72M7QWXHJB67UCN","bundle":"https://pith.science/pith/NRVONX3SSUW72M7QWXHJB67UCN/bundle.json","state":"https://pith.science/pith/NRVONX3SSUW72M7QWXHJB67UCN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NRVONX3SSUW72M7QWXHJB67UCN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:NRVONX3SSUW72M7QWXHJB67UCN","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":"f9a2c278400f109163ad76cc1eed7d9a51811e288744e4bd0a63970a319d06ec","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"physics.geo-ph","submitted_at":"2013-09-09T14:20:35Z","title_canon_sha256":"f7127ced25c8e7c6874a68eff3830cf2dca14baf57bbfd1cb738ccaa2067f901"},"schema_version":"1.0","source":{"id":"1309.2169","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.2169","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"arxiv_version","alias_value":"1309.2169v4","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.2169","created_at":"2026-05-18T02:49:02Z"},{"alias_kind":"pith_short_12","alias_value":"NRVONX3SSUW7","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"NRVONX3SSUW72M7Q","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"NRVONX3S","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:0f97c1a0775181fbe78ab9d3d346e4890e9ebee02ddd33582c04039f5d4686d0","target":"graph","created_at":"2026-05-18T02:49:02Z","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":"Studies of the Earth's atmosphere have shown that more than 90% of xenon (Xe) is depleted compared with its abundance in chondritic meteorites. This long-standing missing Xe paradox has become the subject of considerable interest and several models for a Xe reservoir have been proposed. Whether the missing Xe is hiding in the Earth's core has remained a long unanswered question. The key to address this issue lies in the reactivity of Xe with iron (Fe, the main constituent of the Earth's core), which has been denied by earlier studies. Here we report on the first evidence of the chemical reacti","authors_text":"Chris J. Pickard, Guangtian Zou, Hanyu Liu, Li Zhu, Yanming Ma","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"physics.geo-ph","submitted_at":"2013-09-09T14:20:35Z","title":"Xenon Reacts with Iron at the Conditions of the Earth's Core"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.2169","kind":"arxiv","version":4},"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":"sha256:56340e8212fbc9ea1bfe831c9a47f1be303e4e2a89a0b05fd38e737e6cafa9d0","target":"record","created_at":"2026-05-18T02:49:02Z","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":"f9a2c278400f109163ad76cc1eed7d9a51811e288744e4bd0a63970a319d06ec","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://creativecommons.org/licenses/by-nc-sa/3.0/","primary_cat":"physics.geo-ph","submitted_at":"2013-09-09T14:20:35Z","title_canon_sha256":"f7127ced25c8e7c6874a68eff3830cf2dca14baf57bbfd1cb738ccaa2067f901"},"schema_version":"1.0","source":{"id":"1309.2169","kind":"arxiv","version":4}},"canonical_sha256":"6c6ae6df72952dfd33f0b5ce90fbf41344484ca66dfc6bcbbe5cf473b1c687d5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6c6ae6df72952dfd33f0b5ce90fbf41344484ca66dfc6bcbbe5cf473b1c687d5","first_computed_at":"2026-05-18T02:49:02.004494Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:49:02.004494Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qsYqb8qoHGWJKPUXudViSFIoM2pxBjs4hndiaEHLzOjKV6U6H4Tc1id+DAe6MI4cwuKoYaIDUWeuAkQDV+3sDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:49:02.005007Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.2169","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56340e8212fbc9ea1bfe831c9a47f1be303e4e2a89a0b05fd38e737e6cafa9d0","sha256:0f97c1a0775181fbe78ab9d3d346e4890e9ebee02ddd33582c04039f5d4686d0"],"state_sha256":"3d9df1dd68270fbc9a1a918bf7863cd0b0ca47ec8429652787a598b16600218b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z7bu5FQbqaAOyuSCCLSYsLoiPSB+/jkCbwwnh7eK04yuWZ5X4wX079/G+t7HUGiucr5Sl1QBY7wKcKRyfe5sDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T22:35:48.406786Z","bundle_sha256":"e32d0154788caaec79fd911031c153da507a1166d38d0fa6f97d0debdd2d90cb"}}