{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:ZBLRN3QFCZTTYJ3SM57USSERVN","short_pith_number":"pith:ZBLRN3QF","canonical_record":{"source":{"id":"1808.01641","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-08-05T16:08:54Z","cross_cats_sorted":[],"title_canon_sha256":"f84db26b6f237a9650cb75e589ffebe9e2ea1e28281bee058766dfcd507ffb74","abstract_canon_sha256":"9358fb5629999fa178995077ac24caf672a40b4ddca8612464852f7034248eba"},"schema_version":"1.0"},"canonical_sha256":"c85716ee0516673c2772677f494891ab54d869d07b5eeb4b1915d5175916624c","source":{"kind":"arxiv","id":"1808.01641","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.01641","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"1808.01641v2","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.01641","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZBLRN3QFCZTT","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"ZBLRN3QFCZTTYJ3S","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"ZBLRN3QF","created_at":"2026-05-18T12:33:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:ZBLRN3QFCZTTYJ3SM57USSERVN","target":"record","payload":{"canonical_record":{"source":{"id":"1808.01641","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-08-05T16:08:54Z","cross_cats_sorted":[],"title_canon_sha256":"f84db26b6f237a9650cb75e589ffebe9e2ea1e28281bee058766dfcd507ffb74","abstract_canon_sha256":"9358fb5629999fa178995077ac24caf672a40b4ddca8612464852f7034248eba"},"schema_version":"1.0"},"canonical_sha256":"c85716ee0516673c2772677f494891ab54d869d07b5eeb4b1915d5175916624c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:03:04.146868Z","signature_b64":"RLo+qQphP7O+XDFVY7vaVrZjnaRNmCfV2g021soQI0pAPg8liuZRle+XJFKpyFqKfroRwH/2AWx6g342u5JWCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c85716ee0516673c2772677f494891ab54d869d07b5eeb4b1915d5175916624c","last_reissued_at":"2026-05-18T00:03:04.146243Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:03:04.146243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.01641","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":"2026-05-18T00:03:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mfxbpvYEzbGatsP75DCQJ42llOAMT+WNjB13BhFBSz8ALgqmyEL46RZNtPWfCBdQBISUNGkCY69JvgDRQIxCDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:35:31.019310Z"},"content_sha256":"64d9de2dd255dc25b7b9f878277fb51bfe8b9644e4ea0d6c429579c3158776de","schema_version":"1.0","event_id":"sha256:64d9de2dd255dc25b7b9f878277fb51bfe8b9644e4ea0d6c429579c3158776de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:ZBLRN3QFCZTTYJ3SM57USSERVN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Mapping of the energetically lowest exciton in bulk $1T$-HfS$_2$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"Bernd B\\\"uchner, Carsten Habenicht, Lorenzo Sponza, Martin Knupfer, Roman Schuster","submitted_at":"2018-08-05T16:08:54Z","abstract_excerpt":"By combining electron energy-loss spectroscopy and state-of-the-art computational methods, we were able to provide an extensive picture of the excitonic processes in $1T$-HfS$_2$. The results differ significantly from the properties of the more scrutinized group VI semiconducting transition metal dichalcogenides such as MoS$_2$ and WSe$_2$. The measurements revealed a parabolic exciton dispersion for finite momentum $\\textbf{q}$ parallel to the $\\Gamma$K direction which allowed the determination of the effective exciton mass. The dispersion decreases monotonically for momentum exchanges parall"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.01641","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":"2026-05-18T00:03:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j9SrVCPxcICK7RaFHvoqfEEfg+wd4wo9bjqt/7Ind/z6PzUOqsvHRSoKvXUAlh8Eb3nI04LrhPDUZjZ6LuOSDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:35:31.019988Z"},"content_sha256":"a78ff6cd2a6ded412ee456b558934e16f13bd32d0bcc21c92b073c674b4c6a3f","schema_version":"1.0","event_id":"sha256:a78ff6cd2a6ded412ee456b558934e16f13bd32d0bcc21c92b073c674b4c6a3f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZBLRN3QFCZTTYJ3SM57USSERVN/bundle.json","state_url":"https://pith.science/pith/ZBLRN3QFCZTTYJ3SM57USSERVN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZBLRN3QFCZTTYJ3SM57USSERVN/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":"2026-05-25T19:35:31Z","links":{"resolver":"https://pith.science/pith/ZBLRN3QFCZTTYJ3SM57USSERVN","bundle":"https://pith.science/pith/ZBLRN3QFCZTTYJ3SM57USSERVN/bundle.json","state":"https://pith.science/pith/ZBLRN3QFCZTTYJ3SM57USSERVN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZBLRN3QFCZTTYJ3SM57USSERVN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ZBLRN3QFCZTTYJ3SM57USSERVN","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":"9358fb5629999fa178995077ac24caf672a40b4ddca8612464852f7034248eba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-08-05T16:08:54Z","title_canon_sha256":"f84db26b6f237a9650cb75e589ffebe9e2ea1e28281bee058766dfcd507ffb74"},"schema_version":"1.0","source":{"id":"1808.01641","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.01641","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"arxiv_version","alias_value":"1808.01641v2","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.01641","created_at":"2026-05-18T00:03:04Z"},{"alias_kind":"pith_short_12","alias_value":"ZBLRN3QFCZTT","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_16","alias_value":"ZBLRN3QFCZTTYJ3S","created_at":"2026-05-18T12:33:04Z"},{"alias_kind":"pith_short_8","alias_value":"ZBLRN3QF","created_at":"2026-05-18T12:33:04Z"}],"graph_snapshots":[{"event_id":"sha256:a78ff6cd2a6ded412ee456b558934e16f13bd32d0bcc21c92b073c674b4c6a3f","target":"graph","created_at":"2026-05-18T00:03:04Z","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":"By combining electron energy-loss spectroscopy and state-of-the-art computational methods, we were able to provide an extensive picture of the excitonic processes in $1T$-HfS$_2$. The results differ significantly from the properties of the more scrutinized group VI semiconducting transition metal dichalcogenides such as MoS$_2$ and WSe$_2$. The measurements revealed a parabolic exciton dispersion for finite momentum $\\textbf{q}$ parallel to the $\\Gamma$K direction which allowed the determination of the effective exciton mass. The dispersion decreases monotonically for momentum exchanges parall","authors_text":"Bernd B\\\"uchner, Carsten Habenicht, Lorenzo Sponza, Martin Knupfer, Roman Schuster","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-08-05T16:08:54Z","title":"Mapping of the energetically lowest exciton in bulk $1T$-HfS$_2$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.01641","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":"sha256:64d9de2dd255dc25b7b9f878277fb51bfe8b9644e4ea0d6c429579c3158776de","target":"record","created_at":"2026-05-18T00:03:04Z","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":"9358fb5629999fa178995077ac24caf672a40b4ddca8612464852f7034248eba","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2018-08-05T16:08:54Z","title_canon_sha256":"f84db26b6f237a9650cb75e589ffebe9e2ea1e28281bee058766dfcd507ffb74"},"schema_version":"1.0","source":{"id":"1808.01641","kind":"arxiv","version":2}},"canonical_sha256":"c85716ee0516673c2772677f494891ab54d869d07b5eeb4b1915d5175916624c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c85716ee0516673c2772677f494891ab54d869d07b5eeb4b1915d5175916624c","first_computed_at":"2026-05-18T00:03:04.146243Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:03:04.146243Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RLo+qQphP7O+XDFVY7vaVrZjnaRNmCfV2g021soQI0pAPg8liuZRle+XJFKpyFqKfroRwH/2AWx6g342u5JWCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:03:04.146868Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.01641","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:64d9de2dd255dc25b7b9f878277fb51bfe8b9644e4ea0d6c429579c3158776de","sha256:a78ff6cd2a6ded412ee456b558934e16f13bd32d0bcc21c92b073c674b4c6a3f"],"state_sha256":"b67e8442928b13cb30d0965bd313e8e2eef251e3468f97018fb00978ada90b3f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UBHYs8bUB9ifq3INiqu5Ykek+nJgPFIXLQAr+nevVjgMnt+/1hMBcHixisGcJtT6fO+BcXJV9vCVo9dfz0hZCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:35:31.023737Z","bundle_sha256":"dbc2b6e4909efa3d1a64cf213316fa60771fcb700dbb4afccd62f12bbca4e580"}}