{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:2VDB5OULJJL2MZOLJU4ARB2RRY","short_pith_number":"pith:2VDB5OUL","canonical_record":{"source":{"id":"1202.6205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2012-02-28T13:10:23Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"d543ef856d4f586958b9435f0d38be63480119e11bc9ce8db58a51a7ddfec213","abstract_canon_sha256":"c4fd4eccd2341d2b1fcda4e383f113294cb3e96c3ba12fbffd73f271871b1574"},"schema_version":"1.0"},"canonical_sha256":"d5461eba8b4a57a665cb4d380887518e0c7cacef7e9cccc8aa6e9c4ed0e102c7","source":{"kind":"arxiv","id":"1202.6205","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.6205","created_at":"2026-05-18T03:47:52Z"},{"alias_kind":"arxiv_version","alias_value":"1202.6205v1","created_at":"2026-05-18T03:47:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.6205","created_at":"2026-05-18T03:47:52Z"},{"alias_kind":"pith_short_12","alias_value":"2VDB5OULJJL2","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2VDB5OULJJL2MZOL","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2VDB5OUL","created_at":"2026-05-18T12:26:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:2VDB5OULJJL2MZOLJU4ARB2RRY","target":"record","payload":{"canonical_record":{"source":{"id":"1202.6205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2012-02-28T13:10:23Z","cross_cats_sorted":["cond-mat.mtrl-sci"],"title_canon_sha256":"d543ef856d4f586958b9435f0d38be63480119e11bc9ce8db58a51a7ddfec213","abstract_canon_sha256":"c4fd4eccd2341d2b1fcda4e383f113294cb3e96c3ba12fbffd73f271871b1574"},"schema_version":"1.0"},"canonical_sha256":"d5461eba8b4a57a665cb4d380887518e0c7cacef7e9cccc8aa6e9c4ed0e102c7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:47:52.981092Z","signature_b64":"bQo5sQM5GVzTf7c3UBbSp/rk3ORBmBtppxXdl6rvl+iKNkMw9MivZWjgAvVOnKy63ou59G0mcaCWZdzq2jjUAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5461eba8b4a57a665cb4d380887518e0c7cacef7e9cccc8aa6e9c4ed0e102c7","last_reissued_at":"2026-05-18T03:47:52.980673Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:47:52.980673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1202.6205","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":"2026-05-18T03:47:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oKeNPmPsiFy5FxfwprV3wVVegAN0RMxUKu3bFD400qvdzoLO9BbIR+VMlfeudtRDcY2xA6EwXifJHJrEq3TQDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T02:37:48.297706Z"},"content_sha256":"fad6f836c4dd6524a42a6e38e2a2d33d1bba8a842fb4693474b685102a09a9bd","schema_version":"1.0","event_id":"sha256:fad6f836c4dd6524a42a6e38e2a2d33d1bba8a842fb4693474b685102a09a9bd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:2VDB5OULJJL2MZOLJU4ARB2RRY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Large-scale first principles configuration interaction calculations of optical absorption in boron clusters","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci"],"primary_cat":"physics.atm-clus","authors_text":"Alok Shukla, Ravindra Shinde","submitted_at":"2012-02-28T13:10:23Z","abstract_excerpt":"We have performed systematic large-scale all-electron correlated calculations on boron clusters B$_{n}$(n=2--5), to study their linear optical absorption spectra. Several possible isomers of each cluster were considered, and their geometries were optimized at the coupled-cluster singles doubles (CCSD) level of theory. Using the optimized ground-state geometries, excited states of different clusters were computed using the multi-reference singles-doubles configuration-interaction (MRSDCI) approach, which includes electron correlation effects at a sophisticated level. These CI wave functions wer"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.6205","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":"2026-05-18T03:47:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ml4rXqhMzaoTOhB4TP1HKXPKbbHG3IA9EA5U6TmunKdcPFiA9nvLCD/0TqrPRaHXq5eYCh2EdzzcGHYCrFaiAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T02:37:48.298383Z"},"content_sha256":"ed180a1b13269a3577dca23b42de3d761b295a8feea647ba69ffc17bb90dead6","schema_version":"1.0","event_id":"sha256:ed180a1b13269a3577dca23b42de3d761b295a8feea647ba69ffc17bb90dead6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2VDB5OULJJL2MZOLJU4ARB2RRY/bundle.json","state_url":"https://pith.science/pith/2VDB5OULJJL2MZOLJU4ARB2RRY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2VDB5OULJJL2MZOLJU4ARB2RRY/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":"2026-05-30T02:37:48Z","links":{"resolver":"https://pith.science/pith/2VDB5OULJJL2MZOLJU4ARB2RRY","bundle":"https://pith.science/pith/2VDB5OULJJL2MZOLJU4ARB2RRY/bundle.json","state":"https://pith.science/pith/2VDB5OULJJL2MZOLJU4ARB2RRY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2VDB5OULJJL2MZOLJU4ARB2RRY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:2VDB5OULJJL2MZOLJU4ARB2RRY","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":"c4fd4eccd2341d2b1fcda4e383f113294cb3e96c3ba12fbffd73f271871b1574","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2012-02-28T13:10:23Z","title_canon_sha256":"d543ef856d4f586958b9435f0d38be63480119e11bc9ce8db58a51a7ddfec213"},"schema_version":"1.0","source":{"id":"1202.6205","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1202.6205","created_at":"2026-05-18T03:47:52Z"},{"alias_kind":"arxiv_version","alias_value":"1202.6205v1","created_at":"2026-05-18T03:47:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1202.6205","created_at":"2026-05-18T03:47:52Z"},{"alias_kind":"pith_short_12","alias_value":"2VDB5OULJJL2","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_16","alias_value":"2VDB5OULJJL2MZOL","created_at":"2026-05-18T12:26:50Z"},{"alias_kind":"pith_short_8","alias_value":"2VDB5OUL","created_at":"2026-05-18T12:26:50Z"}],"graph_snapshots":[{"event_id":"sha256:ed180a1b13269a3577dca23b42de3d761b295a8feea647ba69ffc17bb90dead6","target":"graph","created_at":"2026-05-18T03:47:52Z","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":"We have performed systematic large-scale all-electron correlated calculations on boron clusters B$_{n}$(n=2--5), to study their linear optical absorption spectra. Several possible isomers of each cluster were considered, and their geometries were optimized at the coupled-cluster singles doubles (CCSD) level of theory. Using the optimized ground-state geometries, excited states of different clusters were computed using the multi-reference singles-doubles configuration-interaction (MRSDCI) approach, which includes electron correlation effects at a sophisticated level. These CI wave functions wer","authors_text":"Alok Shukla, Ravindra Shinde","cross_cats":["cond-mat.mtrl-sci"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2012-02-28T13:10:23Z","title":"Large-scale first principles configuration interaction calculations of optical absorption in boron clusters"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1202.6205","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:fad6f836c4dd6524a42a6e38e2a2d33d1bba8a842fb4693474b685102a09a9bd","target":"record","created_at":"2026-05-18T03:47:52Z","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":"c4fd4eccd2341d2b1fcda4e383f113294cb3e96c3ba12fbffd73f271871b1574","cross_cats_sorted":["cond-mat.mtrl-sci"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atm-clus","submitted_at":"2012-02-28T13:10:23Z","title_canon_sha256":"d543ef856d4f586958b9435f0d38be63480119e11bc9ce8db58a51a7ddfec213"},"schema_version":"1.0","source":{"id":"1202.6205","kind":"arxiv","version":1}},"canonical_sha256":"d5461eba8b4a57a665cb4d380887518e0c7cacef7e9cccc8aa6e9c4ed0e102c7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5461eba8b4a57a665cb4d380887518e0c7cacef7e9cccc8aa6e9c4ed0e102c7","first_computed_at":"2026-05-18T03:47:52.980673Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:47:52.980673Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bQo5sQM5GVzTf7c3UBbSp/rk3ORBmBtppxXdl6rvl+iKNkMw9MivZWjgAvVOnKy63ou59G0mcaCWZdzq2jjUAw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:47:52.981092Z","signed_message":"canonical_sha256_bytes"},"source_id":"1202.6205","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fad6f836c4dd6524a42a6e38e2a2d33d1bba8a842fb4693474b685102a09a9bd","sha256:ed180a1b13269a3577dca23b42de3d761b295a8feea647ba69ffc17bb90dead6"],"state_sha256":"3735f1de7189bf6f77a5777b4fbe96f519e04469ec66b5bad333b37388f9dc0e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Hf+Hsv6rk0tGN2+Z5SRnE+4EMT1M0ARqOjoeLJzyhsm+K9wT3OSPUXw/4YW0UI/ToihSKohDYK5OvcBmU361DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T02:37:48.301669Z","bundle_sha256":"c14ca06d6acab4ae524e839e4e951f92ef7fd4f4077d29f2b87577c8e5e0494d"}}