{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:GKUN43ITS37B2EN4HHBIWVV7BZ","short_pith_number":"pith:GKUN43IT","canonical_record":{"source":{"id":"1505.01915","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-05-08T02:42:58Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"88377f97038a75ed0ab96211b5f1e2dfb5866a22dee85290c0700accd562bd3f","abstract_canon_sha256":"31ca8a43d13d41eadb04992fcd9ed5e3404166ee4cb51d2da42d7baea32e83c9"},"schema_version":"1.0"},"canonical_sha256":"32a8de6d1396fe1d11bc39c28b56bf0e584cd5c5057b6d9890c1ca4caa80027d","source":{"kind":"arxiv","id":"1505.01915","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.01915","created_at":"2026-05-18T02:16:38Z"},{"alias_kind":"arxiv_version","alias_value":"1505.01915v1","created_at":"2026-05-18T02:16:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01915","created_at":"2026-05-18T02:16:38Z"},{"alias_kind":"pith_short_12","alias_value":"GKUN43ITS37B","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GKUN43ITS37B2EN4","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GKUN43IT","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:GKUN43ITS37B2EN4HHBIWVV7BZ","target":"record","payload":{"canonical_record":{"source":{"id":"1505.01915","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-05-08T02:42:58Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"88377f97038a75ed0ab96211b5f1e2dfb5866a22dee85290c0700accd562bd3f","abstract_canon_sha256":"31ca8a43d13d41eadb04992fcd9ed5e3404166ee4cb51d2da42d7baea32e83c9"},"schema_version":"1.0"},"canonical_sha256":"32a8de6d1396fe1d11bc39c28b56bf0e584cd5c5057b6d9890c1ca4caa80027d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:16:38.513096Z","signature_b64":"JAwETAdLGzXlBc7tIKjwQhoA0wi/ZNPiU0hLacWKswdrxCzMofCf+V4LXzPcgpg/Gdc88z9AIMtNJhqEIVtSAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"32a8de6d1396fe1d11bc39c28b56bf0e584cd5c5057b6d9890c1ca4caa80027d","last_reissued_at":"2026-05-18T02:16:38.512470Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:16:38.512470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1505.01915","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":"2026-05-18T02:16:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nWtkiBer+Fg/jfa7Zvx54caS5NrMdDezCUalBXdqI1tsHUVfc0zRq5Ki4YA5rXDV6XzWuBE09rSaKanrB30ECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:14:30.434129Z"},"content_sha256":"9d9e3ccf03b02785095068912eaf803d69de864cab70d4a78a0e77e3a7f73586","schema_version":"1.0","event_id":"sha256:9d9e3ccf03b02785095068912eaf803d69de864cab70d4a78a0e77e3a7f73586"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:GKUN43ITS37B2EN4HHBIWVV7BZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photoemission study of the electronic structure and charge density waves of Na2Ti2Sb2O","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.supr-con","authors_text":"B. P. Xie, C. L. Zhang, D. L. Feng, J. Jiang, P. C. Dai, S. Y. Tan, X. C. Lai, X. H. Niu, Y. Song, Z. R. Ye","submitted_at":"2015-05-08T02:42:58Z","abstract_excerpt":"The electronic structure of Na2Ti2Sb2O, a parent compound of the newly discovered titanium-based oxypnictide superconductors, is studied by photon energy and polarization dependent angle-resolved photoemission spectroscopy (ARPES). The obtained band structure and Fermi surface agree well with the band structure calculation of Na2Ti2Sb2O in the non-magnetic state, which indicating that there is no magnetic order in Na2Ti2Sb2O and the electronic correlation is weak. Polarization dependent ARPES results suggest the multi-band and multi-orbital nature of Na2Ti2Sb2O. Photon energy dependent ARPES r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01915","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":""},"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":"2026-05-18T02:16:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"brTvz3NYR/uMVv2i1RByuizhLFS29YczoK5rH5+ilGJhJih3YE6Eq3S6Jl1yBOu6rIGxsnbVKvPg1DHhIfODDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:14:30.434504Z"},"content_sha256":"817138ab754cce71d34f6bca8bbf1a19e8cff5cf0fde35e997882a822af18b0d","schema_version":"1.0","event_id":"sha256:817138ab754cce71d34f6bca8bbf1a19e8cff5cf0fde35e997882a822af18b0d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GKUN43ITS37B2EN4HHBIWVV7BZ/bundle.json","state_url":"https://pith.science/pith/GKUN43ITS37B2EN4HHBIWVV7BZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GKUN43ITS37B2EN4HHBIWVV7BZ/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":"2026-05-30T08:14:30Z","links":{"resolver":"https://pith.science/pith/GKUN43ITS37B2EN4HHBIWVV7BZ","bundle":"https://pith.science/pith/GKUN43ITS37B2EN4HHBIWVV7BZ/bundle.json","state":"https://pith.science/pith/GKUN43ITS37B2EN4HHBIWVV7BZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GKUN43ITS37B2EN4HHBIWVV7BZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:GKUN43ITS37B2EN4HHBIWVV7BZ","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":"31ca8a43d13d41eadb04992fcd9ed5e3404166ee4cb51d2da42d7baea32e83c9","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-05-08T02:42:58Z","title_canon_sha256":"88377f97038a75ed0ab96211b5f1e2dfb5866a22dee85290c0700accd562bd3f"},"schema_version":"1.0","source":{"id":"1505.01915","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1505.01915","created_at":"2026-05-18T02:16:38Z"},{"alias_kind":"arxiv_version","alias_value":"1505.01915v1","created_at":"2026-05-18T02:16:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1505.01915","created_at":"2026-05-18T02:16:38Z"},{"alias_kind":"pith_short_12","alias_value":"GKUN43ITS37B","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GKUN43ITS37B2EN4","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GKUN43IT","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:817138ab754cce71d34f6bca8bbf1a19e8cff5cf0fde35e997882a822af18b0d","target":"graph","created_at":"2026-05-18T02:16:38Z","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":"The electronic structure of Na2Ti2Sb2O, a parent compound of the newly discovered titanium-based oxypnictide superconductors, is studied by photon energy and polarization dependent angle-resolved photoemission spectroscopy (ARPES). The obtained band structure and Fermi surface agree well with the band structure calculation of Na2Ti2Sb2O in the non-magnetic state, which indicating that there is no magnetic order in Na2Ti2Sb2O and the electronic correlation is weak. Polarization dependent ARPES results suggest the multi-band and multi-orbital nature of Na2Ti2Sb2O. Photon energy dependent ARPES r","authors_text":"B. P. Xie, C. L. Zhang, D. L. Feng, J. Jiang, P. C. Dai, S. Y. Tan, X. C. Lai, X. H. Niu, Y. Song, Z. R. Ye","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-05-08T02:42:58Z","title":"Photoemission study of the electronic structure and charge density waves of Na2Ti2Sb2O"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.01915","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":"sha256:9d9e3ccf03b02785095068912eaf803d69de864cab70d4a78a0e77e3a7f73586","target":"record","created_at":"2026-05-18T02:16:38Z","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":"31ca8a43d13d41eadb04992fcd9ed5e3404166ee4cb51d2da42d7baea32e83c9","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2015-05-08T02:42:58Z","title_canon_sha256":"88377f97038a75ed0ab96211b5f1e2dfb5866a22dee85290c0700accd562bd3f"},"schema_version":"1.0","source":{"id":"1505.01915","kind":"arxiv","version":1}},"canonical_sha256":"32a8de6d1396fe1d11bc39c28b56bf0e584cd5c5057b6d9890c1ca4caa80027d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32a8de6d1396fe1d11bc39c28b56bf0e584cd5c5057b6d9890c1ca4caa80027d","first_computed_at":"2026-05-18T02:16:38.512470Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:16:38.512470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JAwETAdLGzXlBc7tIKjwQhoA0wi/ZNPiU0hLacWKswdrxCzMofCf+V4LXzPcgpg/Gdc88z9AIMtNJhqEIVtSAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:16:38.513096Z","signed_message":"canonical_sha256_bytes"},"source_id":"1505.01915","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d9e3ccf03b02785095068912eaf803d69de864cab70d4a78a0e77e3a7f73586","sha256:817138ab754cce71d34f6bca8bbf1a19e8cff5cf0fde35e997882a822af18b0d"],"state_sha256":"a5418fb21ff25afccd609b943eb66e0133588cbb6fa130a839a33b20a60b7429"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jzH0n+DRggJ22MHeAv/FKGUa5OqgbZr0C3aLZJ6E3AmeJVLPHXTCIzV2W6/W6CxCasEBGCOLQRjsh5C0o+NoCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T08:14:30.436441Z","bundle_sha256":"ca76456015d96e84c70ffce2defc81321034dd70a897f3a6700a8794112ca1dc"}}