{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:34LRZC5EBMHOXY5YSG4OY6YCSD","short_pith_number":"pith:34LRZC5E","canonical_record":{"source":{"id":"1901.02641","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-09T08:57:20Z","cross_cats_sorted":[],"title_canon_sha256":"45674d84e88bb289513048a1ac93e0fbaa3b78d6701c50b526a4248cc6a20517","abstract_canon_sha256":"2ba9c02b3148ba3a08f045890bfc6f63589c85c419f751d743d3e8c5ddfac415"},"schema_version":"1.0"},"canonical_sha256":"df171c8ba40b0eebe3b891b8ec7b0290f3aea26449d8a181dc52c935930e4955","source":{"kind":"arxiv","id":"1901.02641","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02641","created_at":"2026-05-17T23:40:43Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02641v2","created_at":"2026-05-17T23:40:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02641","created_at":"2026-05-17T23:40:43Z"},{"alias_kind":"pith_short_12","alias_value":"34LRZC5EBMHO","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"34LRZC5EBMHOXY5Y","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"34LRZC5E","created_at":"2026-05-18T12:33:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:34LRZC5EBMHOXY5YSG4OY6YCSD","target":"record","payload":{"canonical_record":{"source":{"id":"1901.02641","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-09T08:57:20Z","cross_cats_sorted":[],"title_canon_sha256":"45674d84e88bb289513048a1ac93e0fbaa3b78d6701c50b526a4248cc6a20517","abstract_canon_sha256":"2ba9c02b3148ba3a08f045890bfc6f63589c85c419f751d743d3e8c5ddfac415"},"schema_version":"1.0"},"canonical_sha256":"df171c8ba40b0eebe3b891b8ec7b0290f3aea26449d8a181dc52c935930e4955","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:43.476039Z","signature_b64":"GqmNsWyuC8sMxKAixhr0eHejLaVt/olFWY4zLCoeanQExwkl8Pyw7G1KRC4QFaSAUI9Jckll7tDcrSTWbE72BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"df171c8ba40b0eebe3b891b8ec7b0290f3aea26449d8a181dc52c935930e4955","last_reissued_at":"2026-05-17T23:40:43.475242Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:43.475242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.02641","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:40:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ThjS0ejTY4X8oGjg+uxEB3cFhwb8bORZQ41I0ZwuAaiK7NA3ZY452c7VyZQDynzqqlvHhkQqr4F1EEvZya3ABA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T00:56:46.164807Z"},"content_sha256":"cce1ed723515afe7d8a37037233609f566e44e26fe791524d28937917179d1d4","schema_version":"1.0","event_id":"sha256:cce1ed723515afe7d8a37037233609f566e44e26fe791524d28937917179d1d4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:34LRZC5EBMHOXY5YSG4OY6YCSD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First-Principles Study on NaxTiO2 with Trigonal Bipyramid Structures: An Insight into Sodium-Ion Battery Anode Application","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Chol-Jun Yu, Jin-Song Kim, Kum-Chol Ri, Song-Hyok Choe, Song-Nam Hong, Un-Gi Jong, Yun-Hyok Kye","submitted_at":"2019-01-09T08:57:20Z","abstract_excerpt":"Developing efficient anode materials with low electrode voltage, high specific capacity and superior rate capability is urgently required on the road to commercially viable sodium-ion batteries (SIBs). Aiming at finding a new SIB anode material, we investigate the electrochemical properties of NaxTiO2 compounds with unprecedented penta-oxygen-coordinated trigonal bipyramid (TB) structures by using the first-principles calculations. Identifying the four different TB phases, we perform the optimization of their crystal structures and calculate their energetics such as sodium binding energy, form"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02641","kind":"arxiv","version":2},"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":"2026-05-17T23:40:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gfM3Hu/yetmTkZvCtTaTPj4hUQoh691cqw2DwfHpGWIe5rCjzcwi8q+HXoxVEZyw+jiJ2k3ZIum6T631Ded1Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T00:56:46.165499Z"},"content_sha256":"48ed4225feb5e6062feda49dbaee9077e297cc18c268ba88a25351ae95fc65f7","schema_version":"1.0","event_id":"sha256:48ed4225feb5e6062feda49dbaee9077e297cc18c268ba88a25351ae95fc65f7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/34LRZC5EBMHOXY5YSG4OY6YCSD/bundle.json","state_url":"https://pith.science/pith/34LRZC5EBMHOXY5YSG4OY6YCSD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/34LRZC5EBMHOXY5YSG4OY6YCSD/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":"2026-05-22T00:56:46Z","links":{"resolver":"https://pith.science/pith/34LRZC5EBMHOXY5YSG4OY6YCSD","bundle":"https://pith.science/pith/34LRZC5EBMHOXY5YSG4OY6YCSD/bundle.json","state":"https://pith.science/pith/34LRZC5EBMHOXY5YSG4OY6YCSD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/34LRZC5EBMHOXY5YSG4OY6YCSD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:34LRZC5EBMHOXY5YSG4OY6YCSD","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":"2ba9c02b3148ba3a08f045890bfc6f63589c85c419f751d743d3e8c5ddfac415","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-09T08:57:20Z","title_canon_sha256":"45674d84e88bb289513048a1ac93e0fbaa3b78d6701c50b526a4248cc6a20517"},"schema_version":"1.0","source":{"id":"1901.02641","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02641","created_at":"2026-05-17T23:40:43Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02641v2","created_at":"2026-05-17T23:40:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02641","created_at":"2026-05-17T23:40:43Z"},{"alias_kind":"pith_short_12","alias_value":"34LRZC5EBMHO","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_16","alias_value":"34LRZC5EBMHOXY5Y","created_at":"2026-05-18T12:33:07Z"},{"alias_kind":"pith_short_8","alias_value":"34LRZC5E","created_at":"2026-05-18T12:33:07Z"}],"graph_snapshots":[{"event_id":"sha256:48ed4225feb5e6062feda49dbaee9077e297cc18c268ba88a25351ae95fc65f7","target":"graph","created_at":"2026-05-17T23:40:43Z","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":"Developing efficient anode materials with low electrode voltage, high specific capacity and superior rate capability is urgently required on the road to commercially viable sodium-ion batteries (SIBs). Aiming at finding a new SIB anode material, we investigate the electrochemical properties of NaxTiO2 compounds with unprecedented penta-oxygen-coordinated trigonal bipyramid (TB) structures by using the first-principles calculations. Identifying the four different TB phases, we perform the optimization of their crystal structures and calculate their energetics such as sodium binding energy, form","authors_text":"Chol-Jun Yu, Jin-Song Kim, Kum-Chol Ri, Song-Hyok Choe, Song-Nam Hong, Un-Gi Jong, Yun-Hyok Kye","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-09T08:57:20Z","title":"First-Principles Study on NaxTiO2 with Trigonal Bipyramid Structures: An Insight into Sodium-Ion Battery Anode Application"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02641","kind":"arxiv","version":2},"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:cce1ed723515afe7d8a37037233609f566e44e26fe791524d28937917179d1d4","target":"record","created_at":"2026-05-17T23:40:43Z","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":"2ba9c02b3148ba3a08f045890bfc6f63589c85c419f751d743d3e8c5ddfac415","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2019-01-09T08:57:20Z","title_canon_sha256":"45674d84e88bb289513048a1ac93e0fbaa3b78d6701c50b526a4248cc6a20517"},"schema_version":"1.0","source":{"id":"1901.02641","kind":"arxiv","version":2}},"canonical_sha256":"df171c8ba40b0eebe3b891b8ec7b0290f3aea26449d8a181dc52c935930e4955","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"df171c8ba40b0eebe3b891b8ec7b0290f3aea26449d8a181dc52c935930e4955","first_computed_at":"2026-05-17T23:40:43.475242Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:43.475242Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GqmNsWyuC8sMxKAixhr0eHejLaVt/olFWY4zLCoeanQExwkl8Pyw7G1KRC4QFaSAUI9Jckll7tDcrSTWbE72BQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:43.476039Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.02641","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cce1ed723515afe7d8a37037233609f566e44e26fe791524d28937917179d1d4","sha256:48ed4225feb5e6062feda49dbaee9077e297cc18c268ba88a25351ae95fc65f7"],"state_sha256":"0884bccf17373dbe02c434dfbbbc1151f9912dcd4eccb061fc3d67114a9483f6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fa6hNtpPaygSeKnIA1OfaOAOFI3ml3kubAfbpU6Mc2SyfXZAgaPTfPRF2ONiFPskxz9iTW1ieGWkxdt9QwwwDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T00:56:46.169259Z","bundle_sha256":"539d525acfd185da52b33a831320ab6e5dce7ecdd83013b577b73eaa902ca151"}}