{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:LLTTGI4V553XVCTQ3KM3WRFVE5","short_pith_number":"pith:LLTTGI4V","canonical_record":{"source":{"id":"1609.06053","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-09-20T08:23:34Z","cross_cats_sorted":[],"title_canon_sha256":"8f80b9194723a421f5332a94d786678e99e68d3bfd6c9d9df92d0415b237bee9","abstract_canon_sha256":"f696abc8296f617e3130810f2ef5697d12db4dece18895e567b970ba72e17d05"},"schema_version":"1.0"},"canonical_sha256":"5ae7332395ef777a8a70da99bb44b52763022dee56c9a3b96e235dd77b131cd6","source":{"kind":"arxiv","id":"1609.06053","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.06053","created_at":"2026-05-18T01:04:16Z"},{"alias_kind":"arxiv_version","alias_value":"1609.06053v1","created_at":"2026-05-18T01:04:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.06053","created_at":"2026-05-18T01:04:16Z"},{"alias_kind":"pith_short_12","alias_value":"LLTTGI4V553X","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"LLTTGI4V553XVCTQ","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"LLTTGI4V","created_at":"2026-05-18T12:30:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:LLTTGI4V553XVCTQ3KM3WRFVE5","target":"record","payload":{"canonical_record":{"source":{"id":"1609.06053","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-09-20T08:23:34Z","cross_cats_sorted":[],"title_canon_sha256":"8f80b9194723a421f5332a94d786678e99e68d3bfd6c9d9df92d0415b237bee9","abstract_canon_sha256":"f696abc8296f617e3130810f2ef5697d12db4dece18895e567b970ba72e17d05"},"schema_version":"1.0"},"canonical_sha256":"5ae7332395ef777a8a70da99bb44b52763022dee56c9a3b96e235dd77b131cd6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:16.826527Z","signature_b64":"1b8X7ZHYYE0rxU5ovLnJEviJoGRQuGmHGJinJJjrVFM7s8NjS8qGIWJ6IFMmgwKGWFA5tR4mzMQfci2BftaGBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5ae7332395ef777a8a70da99bb44b52763022dee56c9a3b96e235dd77b131cd6","last_reissued_at":"2026-05-18T01:04:16.826067Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:16.826067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.06053","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":"2026-05-18T01:04:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nZoKq/LUxSLdrQDRUemelX/xRdHE8C2bklVqlcYvRDi7cOAVl94W1ShwM3n07YVe03MkTH3PbEKIz7KHgqh5BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:20:48.225117Z"},"content_sha256":"c96c75ac552b86ddee5d7ce1d28c996182c4a69c01c9279ddf51ad8efa2d2305","schema_version":"1.0","event_id":"sha256:c96c75ac552b86ddee5d7ce1d28c996182c4a69c01c9279ddf51ad8efa2d2305"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:LLTTGI4V553XVCTQ3KM3WRFVE5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tunnelling splitting in the phosphine molecule","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Clara Sousa-Silva, Jonathan Tennyson, Sergey N. Yurchenko","submitted_at":"2016-09-20T08:23:34Z","abstract_excerpt":"Splitting due to tunnelling via the potential energy barrier has played a significant role in the study of molecular spectra since the early days of spectroscopy. The observation of the ammonia doublet led to attempts to find a phosphine analogous, but these have so far failed due to its considerably higher barrier. Full dimensional, variational nuclear motion calculations are used to predict splittings as a function of excitation energy. Simulated spectra suggest that such splittings should be observable in the near infrared via overtones of the $\\nu_2$ bending mode starting with $4\\nu_2$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.06053","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":"2026-05-18T01:04:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kyZKbwNawT5ehu1OyRcNfr9BWbpwRJJ1JaZB/+tLcvQJw1j5pnJPzkIJLwRZ3PQeBIQn+tgg8W6K54dTgZEdBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:20:48.225774Z"},"content_sha256":"a877c4b4de49a6a8527f1bd9cd50982c206e8ba4cd2b687b523736f7a68f4baf","schema_version":"1.0","event_id":"sha256:a877c4b4de49a6a8527f1bd9cd50982c206e8ba4cd2b687b523736f7a68f4baf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LLTTGI4V553XVCTQ3KM3WRFVE5/bundle.json","state_url":"https://pith.science/pith/LLTTGI4V553XVCTQ3KM3WRFVE5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LLTTGI4V553XVCTQ3KM3WRFVE5/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":"2026-06-02T14:20:48Z","links":{"resolver":"https://pith.science/pith/LLTTGI4V553XVCTQ3KM3WRFVE5","bundle":"https://pith.science/pith/LLTTGI4V553XVCTQ3KM3WRFVE5/bundle.json","state":"https://pith.science/pith/LLTTGI4V553XVCTQ3KM3WRFVE5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LLTTGI4V553XVCTQ3KM3WRFVE5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:LLTTGI4V553XVCTQ3KM3WRFVE5","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":"f696abc8296f617e3130810f2ef5697d12db4dece18895e567b970ba72e17d05","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-09-20T08:23:34Z","title_canon_sha256":"8f80b9194723a421f5332a94d786678e99e68d3bfd6c9d9df92d0415b237bee9"},"schema_version":"1.0","source":{"id":"1609.06053","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.06053","created_at":"2026-05-18T01:04:16Z"},{"alias_kind":"arxiv_version","alias_value":"1609.06053v1","created_at":"2026-05-18T01:04:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.06053","created_at":"2026-05-18T01:04:16Z"},{"alias_kind":"pith_short_12","alias_value":"LLTTGI4V553X","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"LLTTGI4V553XVCTQ","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"LLTTGI4V","created_at":"2026-05-18T12:30:29Z"}],"graph_snapshots":[{"event_id":"sha256:a877c4b4de49a6a8527f1bd9cd50982c206e8ba4cd2b687b523736f7a68f4baf","target":"graph","created_at":"2026-05-18T01:04:16Z","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":"Splitting due to tunnelling via the potential energy barrier has played a significant role in the study of molecular spectra since the early days of spectroscopy. The observation of the ammonia doublet led to attempts to find a phosphine analogous, but these have so far failed due to its considerably higher barrier. Full dimensional, variational nuclear motion calculations are used to predict splittings as a function of excitation energy. Simulated spectra suggest that such splittings should be observable in the near infrared via overtones of the $\\nu_2$ bending mode starting with $4\\nu_2$.","authors_text":"Clara Sousa-Silva, Jonathan Tennyson, Sergey N. Yurchenko","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-09-20T08:23:34Z","title":"Tunnelling splitting in the phosphine molecule"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.06053","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:c96c75ac552b86ddee5d7ce1d28c996182c4a69c01c9279ddf51ad8efa2d2305","target":"record","created_at":"2026-05-18T01:04:16Z","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":"f696abc8296f617e3130810f2ef5697d12db4dece18895e567b970ba72e17d05","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-09-20T08:23:34Z","title_canon_sha256":"8f80b9194723a421f5332a94d786678e99e68d3bfd6c9d9df92d0415b237bee9"},"schema_version":"1.0","source":{"id":"1609.06053","kind":"arxiv","version":1}},"canonical_sha256":"5ae7332395ef777a8a70da99bb44b52763022dee56c9a3b96e235dd77b131cd6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5ae7332395ef777a8a70da99bb44b52763022dee56c9a3b96e235dd77b131cd6","first_computed_at":"2026-05-18T01:04:16.826067Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:16.826067Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1b8X7ZHYYE0rxU5ovLnJEviJoGRQuGmHGJinJJjrVFM7s8NjS8qGIWJ6IFMmgwKGWFA5tR4mzMQfci2BftaGBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:16.826527Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.06053","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c96c75ac552b86ddee5d7ce1d28c996182c4a69c01c9279ddf51ad8efa2d2305","sha256:a877c4b4de49a6a8527f1bd9cd50982c206e8ba4cd2b687b523736f7a68f4baf"],"state_sha256":"87b476715263f7608bdb6df0f1d948d69c4441ec99e6df2f4da220f377d68595"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KcPCKhBKcK+He7L9HR5DKFK1lwhgTnnp0fGZSYPrZE07FKeZG1+1YM8/X6Epf43KHG60vM5O9zFa8o3jah9fAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T14:20:48.229473Z","bundle_sha256":"f99c135a295b863870a3dd9fbfdd38a2dc252b5601f17bb58117340ca3b484c5"}}