{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:XF2CHKC72S4TCKXRWUE6OIPJ3Z","short_pith_number":"pith:XF2CHKC7","canonical_record":{"source":{"id":"1812.08207","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-12-19T19:30:05Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"c6caa8cf29fcc7f0fdc4e7cfa3e92fd8c0ff3c503e053232e43726e414618648","abstract_canon_sha256":"5a528eeb00ded5d18c08f96566b2236435935ba4b753f3b3375cc726dda3c3d0"},"schema_version":"1.0"},"canonical_sha256":"b97423a85fd4b9312af1b509e721e9de435685eb5b401c30ebdb739cd7e37494","source":{"kind":"arxiv","id":"1812.08207","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.08207","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"arxiv_version","alias_value":"1812.08207v2","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08207","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"pith_short_12","alias_value":"XF2CHKC72S4T","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"pith_short_16","alias_value":"XF2CHKC72S4TCKXR","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"pith_short_8","alias_value":"XF2CHKC7","created_at":"2026-07-05T00:01:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:XF2CHKC72S4TCKXRWUE6OIPJ3Z","target":"record","payload":{"canonical_record":{"source":{"id":"1812.08207","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-12-19T19:30:05Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"c6caa8cf29fcc7f0fdc4e7cfa3e92fd8c0ff3c503e053232e43726e414618648","abstract_canon_sha256":"5a528eeb00ded5d18c08f96566b2236435935ba4b753f3b3375cc726dda3c3d0"},"schema_version":"1.0"},"canonical_sha256":"b97423a85fd4b9312af1b509e721e9de435685eb5b401c30ebdb739cd7e37494","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:01:37.497588Z","signature_b64":"FbKzcJIktlLpEmi15HroMs8cljakTBI2niDtiLNwOZzrA1+bO/CxM30J7xXqqOBpzBA8YJCS1fhz+Rgw7xPrCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b97423a85fd4b9312af1b509e721e9de435685eb5b401c30ebdb739cd7e37494","last_reissued_at":"2026-07-05T00:01:37.497096Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:01:37.497096Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.08207","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":"2026-07-05T00:01:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0wLsV0JBPJT28IiiBRaiqsuBw3sIEkkvp4UtR/bgQ7AjJSEYUlovCxToJsUiTqrMA2w4yj6EdnDO0DU/Z2g5CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T03:33:28.289915Z"},"content_sha256":"faee3913c9e3ab13a058ace9341a1b5a7b76f9d57861688f0cb4728303a9da8f","schema_version":"1.0","event_id":"sha256:faee3913c9e3ab13a058ace9341a1b5a7b76f9d57861688f0cb4728303a9da8f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:XF2CHKC72S4TCKXRWUE6OIPJ3Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"QCD Sum Rules Approach to the $X,~Y$ and $Z$ States","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"A. Martinez Torres, Carina M. Zanetti, Fernando S. Navarra, Jorgivan M. Dias, K. P. Khemchandani, Marina Nielsen, Raphael M. Albuquerque","submitted_at":"2018-12-19T19:30:05Z","abstract_excerpt":"In the past decade, due to the experimental observation of many charmonium-like states, there has been a revival of hadron spectroscopy. In particular, the experimental observation of charged charmonium-like, $Z_c$ states, and bottomonium-like, $Z_b$ states, represents a challenge since they can not be accommodated within the naive quark model. These charged states are good candidates of either tetraquark or molecular states and their observation motivated a vigorous theoretical activity. This is a rapidly evolving field with enormous amount of new experimental information. In this work, we re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08207","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1812.08207/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":"2026-07-05T00:01:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K+Qdf2VpBTpgzl3rO8lLJgTMG2ybV7WETZzAaMLUerzQBxvovZj7j/LYbh/k/Pp3o5NHEqjoWj9jk/o38x/MDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-09T03:33:28.290427Z"},"content_sha256":"a169004aae5a371ffdcbfd6bdde242848e9bc8c1d327d88f3882fb9632a166be","schema_version":"1.0","event_id":"sha256:a169004aae5a371ffdcbfd6bdde242848e9bc8c1d327d88f3882fb9632a166be"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XF2CHKC72S4TCKXRWUE6OIPJ3Z/bundle.json","state_url":"https://pith.science/pith/XF2CHKC72S4TCKXRWUE6OIPJ3Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XF2CHKC72S4TCKXRWUE6OIPJ3Z/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":"2026-08-09T03:33:28Z","links":{"resolver":"https://pith.science/pith/XF2CHKC72S4TCKXRWUE6OIPJ3Z","bundle":"https://pith.science/pith/XF2CHKC72S4TCKXRWUE6OIPJ3Z/bundle.json","state":"https://pith.science/pith/XF2CHKC72S4TCKXRWUE6OIPJ3Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XF2CHKC72S4TCKXRWUE6OIPJ3Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XF2CHKC72S4TCKXRWUE6OIPJ3Z","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":"5a528eeb00ded5d18c08f96566b2236435935ba4b753f3b3375cc726dda3c3d0","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-12-19T19:30:05Z","title_canon_sha256":"c6caa8cf29fcc7f0fdc4e7cfa3e92fd8c0ff3c503e053232e43726e414618648"},"schema_version":"1.0","source":{"id":"1812.08207","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.08207","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"arxiv_version","alias_value":"1812.08207v2","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.08207","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"pith_short_12","alias_value":"XF2CHKC72S4T","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"pith_short_16","alias_value":"XF2CHKC72S4TCKXR","created_at":"2026-07-05T00:01:37Z"},{"alias_kind":"pith_short_8","alias_value":"XF2CHKC7","created_at":"2026-07-05T00:01:37Z"}],"graph_snapshots":[{"event_id":"sha256:a169004aae5a371ffdcbfd6bdde242848e9bc8c1d327d88f3882fb9632a166be","target":"graph","created_at":"2026-07-05T00:01:37Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1812.08207/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the past decade, due to the experimental observation of many charmonium-like states, there has been a revival of hadron spectroscopy. In particular, the experimental observation of charged charmonium-like, $Z_c$ states, and bottomonium-like, $Z_b$ states, represents a challenge since they can not be accommodated within the naive quark model. These charged states are good candidates of either tetraquark or molecular states and their observation motivated a vigorous theoretical activity. This is a rapidly evolving field with enormous amount of new experimental information. In this work, we re","authors_text":"A. Martinez Torres, Carina M. Zanetti, Fernando S. Navarra, Jorgivan M. Dias, K. P. Khemchandani, Marina Nielsen, Raphael M. Albuquerque","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-12-19T19:30:05Z","title":"QCD Sum Rules Approach to the $X,~Y$ and $Z$ States"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.08207","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:faee3913c9e3ab13a058ace9341a1b5a7b76f9d57861688f0cb4728303a9da8f","target":"record","created_at":"2026-07-05T00:01:37Z","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":"5a528eeb00ded5d18c08f96566b2236435935ba4b753f3b3375cc726dda3c3d0","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2018-12-19T19:30:05Z","title_canon_sha256":"c6caa8cf29fcc7f0fdc4e7cfa3e92fd8c0ff3c503e053232e43726e414618648"},"schema_version":"1.0","source":{"id":"1812.08207","kind":"arxiv","version":2}},"canonical_sha256":"b97423a85fd4b9312af1b509e721e9de435685eb5b401c30ebdb739cd7e37494","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b97423a85fd4b9312af1b509e721e9de435685eb5b401c30ebdb739cd7e37494","first_computed_at":"2026-07-05T00:01:37.497096Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:01:37.497096Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FbKzcJIktlLpEmi15HroMs8cljakTBI2niDtiLNwOZzrA1+bO/CxM30J7xXqqOBpzBA8YJCS1fhz+Rgw7xPrCA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:01:37.497588Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.08207","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:faee3913c9e3ab13a058ace9341a1b5a7b76f9d57861688f0cb4728303a9da8f","sha256:a169004aae5a371ffdcbfd6bdde242848e9bc8c1d327d88f3882fb9632a166be"],"state_sha256":"72e3949c58187f5c7134f21c98f6cc30e3aabc460deaacd1fa15539e503593be"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ThQmloTZ2lUIuHv1EYuJFkGWGdt3WPb/e3uYZb2Bl+QIf+nmYb2xLezyIfhbu4byeTr/c/Wav7Pd6DxUuWJrDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-09T03:33:28.294045Z","bundle_sha256":"d12b4da95307bbc8d5d5d76675f7a85eb5ae53b7a84d2a754b152ad169dda74e"}}