{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:Y4I23YWWRKNSKMUADMPFKPQAGE","short_pith_number":"pith:Y4I23YWW","canonical_record":{"source":{"id":"1106.2643","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-06-14T09:06:47Z","cross_cats_sorted":[],"title_canon_sha256":"1347320fb9c023766069d7e7943aec8bb4fafd99b581bd83bef1a7df587a30c3","abstract_canon_sha256":"7d4efaa9a6ca6c38eb9cc90fe8ecb141313ebacd203ef919df7b3a328dde0b54"},"schema_version":"1.0"},"canonical_sha256":"c711ade2d68a9b2532801b1e553e0031340788bc6c3df7b40b88e4aed3717edc","source":{"kind":"arxiv","id":"1106.2643","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.2643","created_at":"2026-05-18T02:01:37Z"},{"alias_kind":"arxiv_version","alias_value":"1106.2643v1","created_at":"2026-05-18T02:01:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.2643","created_at":"2026-05-18T02:01:37Z"},{"alias_kind":"pith_short_12","alias_value":"Y4I23YWWRKNS","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"Y4I23YWWRKNSKMUA","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"Y4I23YWW","created_at":"2026-05-18T12:26:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:Y4I23YWWRKNSKMUADMPFKPQAGE","target":"record","payload":{"canonical_record":{"source":{"id":"1106.2643","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-06-14T09:06:47Z","cross_cats_sorted":[],"title_canon_sha256":"1347320fb9c023766069d7e7943aec8bb4fafd99b581bd83bef1a7df587a30c3","abstract_canon_sha256":"7d4efaa9a6ca6c38eb9cc90fe8ecb141313ebacd203ef919df7b3a328dde0b54"},"schema_version":"1.0"},"canonical_sha256":"c711ade2d68a9b2532801b1e553e0031340788bc6c3df7b40b88e4aed3717edc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:37.586451Z","signature_b64":"3fUbQBieUiq3XkGrILdYQookkIfkJlAtS2r+kS27peua4JY3xhnaznwYUjao+zrRzsD5HeJxjfWu2LbswfMfDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c711ade2d68a9b2532801b1e553e0031340788bc6c3df7b40b88e4aed3717edc","last_reissued_at":"2026-05-18T02:01:37.585894Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:37.585894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.2643","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":"2026-05-18T02:01:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VkMOx6Tfrr9LJHu3KBikz8nL5vr5sA6VxV8CrZYhyvBrzN/XnnHQIOHs2FlVNgw3CMXuk57Nx7wuZ3FSby5QAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:05:54.176789Z"},"content_sha256":"e0a6ae2edf2ce4b2a4f6d86e9aa632cbc7a8d14dae8ee8f8f9814d506fc3d133","schema_version":"1.0","event_id":"sha256:e0a6ae2edf2ce4b2a4f6d86e9aa632cbc7a8d14dae8ee8f8f9814d506fc3d133"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:Y4I23YWWRKNSKMUADMPFKPQAGE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.supr-con","authors_text":"A. Q. R. Baron, H. Khosroabadi, H. Uchiyama, J. Kobayashi, K. Tanaka, S. Miyasaka, S. Tajima","submitted_at":"2011-06-14T09:06:47Z","abstract_excerpt":"The dispersion of phonons in Ba1-xKxBiO3 along the (3+q, 0, 0) direction in reciprocal space was determined for x=0, 0.30, 0.37, 0.52 using high-resolution inelastic X-ray scattering. The observed phonon energies near \\Gamma were in good agreement with published optical data. It was found that two high-energy modes strongly soften near q=0.25 when the system becomes metallic (x >0.35). There was no softening in the insulating phase, even at x=0.30, very near the metal-insulator transition. This suggests that the phonon softening is linked to the appearance of the Fermi-surface."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.2643","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":"2026-05-18T02:01:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FBRVu9G+J2K7pVbWiGYdWzipQjqDkeNzRuRSQ7vpgo/1DXTaFG8YmUb/VbFUbuJYaE4wUKL2SEM1tw0U0cLCDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:05:54.177422Z"},"content_sha256":"40666da401e9394318f98547c1c0c9ed2fde20dd21c824b6bb88becf599ffacf","schema_version":"1.0","event_id":"sha256:40666da401e9394318f98547c1c0c9ed2fde20dd21c824b6bb88becf599ffacf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/bundle.json","state_url":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/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":"2026-05-28T11:05:54Z","links":{"resolver":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE","bundle":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/bundle.json","state":"https://pith.science/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y4I23YWWRKNSKMUADMPFKPQAGE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:Y4I23YWWRKNSKMUADMPFKPQAGE","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":"7d4efaa9a6ca6c38eb9cc90fe8ecb141313ebacd203ef919df7b3a328dde0b54","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-06-14T09:06:47Z","title_canon_sha256":"1347320fb9c023766069d7e7943aec8bb4fafd99b581bd83bef1a7df587a30c3"},"schema_version":"1.0","source":{"id":"1106.2643","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.2643","created_at":"2026-05-18T02:01:37Z"},{"alias_kind":"arxiv_version","alias_value":"1106.2643v1","created_at":"2026-05-18T02:01:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.2643","created_at":"2026-05-18T02:01:37Z"},{"alias_kind":"pith_short_12","alias_value":"Y4I23YWWRKNS","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_16","alias_value":"Y4I23YWWRKNSKMUA","created_at":"2026-05-18T12:26:47Z"},{"alias_kind":"pith_short_8","alias_value":"Y4I23YWW","created_at":"2026-05-18T12:26:47Z"}],"graph_snapshots":[{"event_id":"sha256:40666da401e9394318f98547c1c0c9ed2fde20dd21c824b6bb88becf599ffacf","target":"graph","created_at":"2026-05-18T02:01:37Z","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 dispersion of phonons in Ba1-xKxBiO3 along the (3+q, 0, 0) direction in reciprocal space was determined for x=0, 0.30, 0.37, 0.52 using high-resolution inelastic X-ray scattering. The observed phonon energies near \\Gamma were in good agreement with published optical data. It was found that two high-energy modes strongly soften near q=0.25 when the system becomes metallic (x >0.35). There was no softening in the insulating phase, even at x=0.30, very near the metal-insulator transition. This suggests that the phonon softening is linked to the appearance of the Fermi-surface.","authors_text":"A. Q. R. Baron, H. Khosroabadi, H. Uchiyama, J. Kobayashi, K. Tanaka, S. Miyasaka, S. Tajima","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-06-14T09:06:47Z","title":"Softening of the Bond-Stretching Phonon of Ba1-xKxBiO3 at the Metal to Insulator Transition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.2643","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:e0a6ae2edf2ce4b2a4f6d86e9aa632cbc7a8d14dae8ee8f8f9814d506fc3d133","target":"record","created_at":"2026-05-18T02:01:37Z","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":"7d4efaa9a6ca6c38eb9cc90fe8ecb141313ebacd203ef919df7b3a328dde0b54","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.supr-con","submitted_at":"2011-06-14T09:06:47Z","title_canon_sha256":"1347320fb9c023766069d7e7943aec8bb4fafd99b581bd83bef1a7df587a30c3"},"schema_version":"1.0","source":{"id":"1106.2643","kind":"arxiv","version":1}},"canonical_sha256":"c711ade2d68a9b2532801b1e553e0031340788bc6c3df7b40b88e4aed3717edc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c711ade2d68a9b2532801b1e553e0031340788bc6c3df7b40b88e4aed3717edc","first_computed_at":"2026-05-18T02:01:37.585894Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:37.585894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3fUbQBieUiq3XkGrILdYQookkIfkJlAtS2r+kS27peua4JY3xhnaznwYUjao+zrRzsD5HeJxjfWu2LbswfMfDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:37.586451Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.2643","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e0a6ae2edf2ce4b2a4f6d86e9aa632cbc7a8d14dae8ee8f8f9814d506fc3d133","sha256:40666da401e9394318f98547c1c0c9ed2fde20dd21c824b6bb88becf599ffacf"],"state_sha256":"7d659db38b12c8cf00b2e4c8798b0967d2299cad8a786f3a44aeab45fe4a64e4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mmdVDioLzBuYNlaH2iRbNzTE9k+VvR91A6wU4nHN+jh2bsNuncjjDDgdkOeMuTjj2c/zhcovAeqIpXUYsl2WBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T11:05:54.180498Z","bundle_sha256":"82d7a540b85bef81b32b8cdca5eb15fc5139f5bc9c5f82209890a4c2c7bfddaa"}}