{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:YGKBO5DAAGA7TDAJUTIU7JA6AX","short_pith_number":"pith:YGKBO5DA","canonical_record":{"source":{"id":"1907.09316","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-07-22T13:29:54Z","cross_cats_sorted":[],"title_canon_sha256":"d70b8b0b7efc7d1a6a59b4751b3dc64c6ada35b9dbf876dae59908203d77ff18","abstract_canon_sha256":"ce42e6de0c58a75cc6fe747406a7f64a6e8ef7599195693eafa58c4eda68ee28"},"schema_version":"1.0"},"canonical_sha256":"c1941774600181f98c09a4d14fa41e05c1f46b7aaf1126aa71f7d238dcf1e74f","source":{"kind":"arxiv","id":"1907.09316","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.09316","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"arxiv_version","alias_value":"1907.09316v3","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.09316","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"pith_short_12","alias_value":"YGKBO5DAAGA7","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"pith_short_16","alias_value":"YGKBO5DAAGA7TDAJ","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"pith_short_8","alias_value":"YGKBO5DA","created_at":"2026-07-05T01:00:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:YGKBO5DAAGA7TDAJUTIU7JA6AX","target":"record","payload":{"canonical_record":{"source":{"id":"1907.09316","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-07-22T13:29:54Z","cross_cats_sorted":[],"title_canon_sha256":"d70b8b0b7efc7d1a6a59b4751b3dc64c6ada35b9dbf876dae59908203d77ff18","abstract_canon_sha256":"ce42e6de0c58a75cc6fe747406a7f64a6e8ef7599195693eafa58c4eda68ee28"},"schema_version":"1.0"},"canonical_sha256":"c1941774600181f98c09a4d14fa41e05c1f46b7aaf1126aa71f7d238dcf1e74f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:00:12.824224Z","signature_b64":"GdG2C/W5bg6lpkDrV7Bj7ZTTk0cL2jv7sgmHGU0O/nGnU/0lKP8ZUnQb2gu1AP6GyGR/Sm0aj78L12enGrA2Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c1941774600181f98c09a4d14fa41e05c1f46b7aaf1126aa71f7d238dcf1e74f","last_reissued_at":"2026-07-05T01:00:12.823812Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:00:12.823812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.09316","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T01:00:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MLAcEi5TRkhbcdHApBP+S0mjKhc+FwlhDgek045gYxe/0y8ecVAtXAZu0jZBfPI+yP+emJ7v0GUU6wBmKDD5AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T15:07:39.828218Z"},"content_sha256":"ee4604f796fba3034e006e63b0cd7ca613a00cda8cc23090dded9e886cd5fd2f","schema_version":"1.0","event_id":"sha256:ee4604f796fba3034e006e63b0cd7ca613a00cda8cc23090dded9e886cd5fd2f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:YGKBO5DAAGA7TDAJUTIU7JA6AX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sign-switching of dimer correlations in SrCu$_2$(BO$_3$)$_2$ under hydrostatic pressure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.str-el","authors_text":"Andrey Zheludev, Lena Stoppel, Severian Gvasaliya, Simon Bettler, Zewu Yan","submitted_at":"2019-07-22T13:29:54Z","abstract_excerpt":"Magnetic and vibrational excitations in SrCu$_2$(BO$_3$)$_2$ are studied using Raman spectroscopy at hydrostatic pressures up to 34 kbar and temperatures down to 2.6 K. The frequency of a particular optical phonon, the so-called pantograph mode, shows a very strong anomalous temperature dependence below about 40 K. We link the magnitude of the effect to the magnetic exchange energy on the dimer bonds in the Sutherland-Shastry spin lattice in this material. The corresponding dimer spin correlations are quantitatively estimated and found to be strongly pressure dependent. At around P$_2\\sim$22 k"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.09316","kind":"arxiv","version":3},"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/1907.09316/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":"2026-07-05T01:00:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0KAuNEkCB777cur0EjEe0OFxcCJR7P9Znx7mFQn8AYR8TcYDZKt3f1NZwt0UOO0IoPGubafp9wp8RVRmj72dAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T15:07:39.828603Z"},"content_sha256":"462ea54ecfa912060f122c9165d5001b7891780684ef9270689556ca866cf543","schema_version":"1.0","event_id":"sha256:462ea54ecfa912060f122c9165d5001b7891780684ef9270689556ca866cf543"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YGKBO5DAAGA7TDAJUTIU7JA6AX/bundle.json","state_url":"https://pith.science/pith/YGKBO5DAAGA7TDAJUTIU7JA6AX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YGKBO5DAAGA7TDAJUTIU7JA6AX/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":"2026-07-06T15:07:39Z","links":{"resolver":"https://pith.science/pith/YGKBO5DAAGA7TDAJUTIU7JA6AX","bundle":"https://pith.science/pith/YGKBO5DAAGA7TDAJUTIU7JA6AX/bundle.json","state":"https://pith.science/pith/YGKBO5DAAGA7TDAJUTIU7JA6AX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YGKBO5DAAGA7TDAJUTIU7JA6AX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:YGKBO5DAAGA7TDAJUTIU7JA6AX","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":"ce42e6de0c58a75cc6fe747406a7f64a6e8ef7599195693eafa58c4eda68ee28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-07-22T13:29:54Z","title_canon_sha256":"d70b8b0b7efc7d1a6a59b4751b3dc64c6ada35b9dbf876dae59908203d77ff18"},"schema_version":"1.0","source":{"id":"1907.09316","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.09316","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"arxiv_version","alias_value":"1907.09316v3","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.09316","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"pith_short_12","alias_value":"YGKBO5DAAGA7","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"pith_short_16","alias_value":"YGKBO5DAAGA7TDAJ","created_at":"2026-07-05T01:00:12Z"},{"alias_kind":"pith_short_8","alias_value":"YGKBO5DA","created_at":"2026-07-05T01:00:12Z"}],"graph_snapshots":[{"event_id":"sha256:462ea54ecfa912060f122c9165d5001b7891780684ef9270689556ca866cf543","target":"graph","created_at":"2026-07-05T01:00:12Z","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/1907.09316/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Magnetic and vibrational excitations in SrCu$_2$(BO$_3$)$_2$ are studied using Raman spectroscopy at hydrostatic pressures up to 34 kbar and temperatures down to 2.6 K. The frequency of a particular optical phonon, the so-called pantograph mode, shows a very strong anomalous temperature dependence below about 40 K. We link the magnitude of the effect to the magnetic exchange energy on the dimer bonds in the Sutherland-Shastry spin lattice in this material. The corresponding dimer spin correlations are quantitatively estimated and found to be strongly pressure dependent. At around P$_2\\sim$22 k","authors_text":"Andrey Zheludev, Lena Stoppel, Severian Gvasaliya, Simon Bettler, Zewu Yan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-07-22T13:29:54Z","title":"Sign-switching of dimer correlations in SrCu$_2$(BO$_3$)$_2$ under hydrostatic pressure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.09316","kind":"arxiv","version":3},"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:ee4604f796fba3034e006e63b0cd7ca613a00cda8cc23090dded9e886cd5fd2f","target":"record","created_at":"2026-07-05T01:00:12Z","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":"ce42e6de0c58a75cc6fe747406a7f64a6e8ef7599195693eafa58c4eda68ee28","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2019-07-22T13:29:54Z","title_canon_sha256":"d70b8b0b7efc7d1a6a59b4751b3dc64c6ada35b9dbf876dae59908203d77ff18"},"schema_version":"1.0","source":{"id":"1907.09316","kind":"arxiv","version":3}},"canonical_sha256":"c1941774600181f98c09a4d14fa41e05c1f46b7aaf1126aa71f7d238dcf1e74f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c1941774600181f98c09a4d14fa41e05c1f46b7aaf1126aa71f7d238dcf1e74f","first_computed_at":"2026-07-05T01:00:12.823812Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:00:12.823812Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GdG2C/W5bg6lpkDrV7Bj7ZTTk0cL2jv7sgmHGU0O/nGnU/0lKP8ZUnQb2gu1AP6GyGR/Sm0aj78L12enGrA2Bg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:00:12.824224Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.09316","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ee4604f796fba3034e006e63b0cd7ca613a00cda8cc23090dded9e886cd5fd2f","sha256:462ea54ecfa912060f122c9165d5001b7891780684ef9270689556ca866cf543"],"state_sha256":"dc93534ca3bed4daa022cbd5764be9bca0efb6d5e94fa50f006de4039c18376f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fvvMqLUfMQ5+1tvxp/XHz6aaRDrp5yDVrs6KqLaGXE5ke8pEbvGN8AMmqCn8Q66x6eS7/nGugqllw1halygcDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T15:07:39.830454Z","bundle_sha256":"fd86235954180f9f9bd96ea2f5c341a64bfc0d46c1345da6246c65a83db8971d"}}