{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:RN6XUZEVGOFEHZ3BO42KAUINI5","short_pith_number":"pith:RN6XUZEV","canonical_record":{"source":{"id":"1411.5997","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-21T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"d6e22482eb18299d6714c8a82098444886ebec0fb8e43d71d2d37ea5763c43cd","abstract_canon_sha256":"369ee8601f86d3ba3fa8f8982de6421eb7fb1985a60ebfa1b82265d45cd74d79"},"schema_version":"1.0"},"canonical_sha256":"8b7d7a6495338a43e7617734a0510d475c3e12baf47ee2c024a611bdc2fd741a","source":{"kind":"arxiv","id":"1411.5997","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.5997","created_at":"2026-05-18T02:27:28Z"},{"alias_kind":"arxiv_version","alias_value":"1411.5997v2","created_at":"2026-05-18T02:27:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.5997","created_at":"2026-05-18T02:27:28Z"},{"alias_kind":"pith_short_12","alias_value":"RN6XUZEVGOFE","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"RN6XUZEVGOFEHZ3B","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"RN6XUZEV","created_at":"2026-05-18T12:28:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:RN6XUZEVGOFEHZ3BO42KAUINI5","target":"record","payload":{"canonical_record":{"source":{"id":"1411.5997","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-21T20:00:04Z","cross_cats_sorted":[],"title_canon_sha256":"d6e22482eb18299d6714c8a82098444886ebec0fb8e43d71d2d37ea5763c43cd","abstract_canon_sha256":"369ee8601f86d3ba3fa8f8982de6421eb7fb1985a60ebfa1b82265d45cd74d79"},"schema_version":"1.0"},"canonical_sha256":"8b7d7a6495338a43e7617734a0510d475c3e12baf47ee2c024a611bdc2fd741a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:27:28.950816Z","signature_b64":"oe2poQTOUfXXJJGHB64NJz2Jg9PcBMCiWZomc4M1pC3E5N1kPRHBKrpOBMNmptyKP8KYmirl240UnijIZVt0Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8b7d7a6495338a43e7617734a0510d475c3e12baf47ee2c024a611bdc2fd741a","last_reissued_at":"2026-05-18T02:27:28.950088Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:27:28.950088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1411.5997","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":"2026-05-18T02:27:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6LHLyOZJ8brpMILHuZ6kTvYxWE020X8Lj/0RaEl0nzt3yznIFQThje0JhXxa6Vd54JSF6/6Rz5xXVDfi6c2eAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T18:28:34.726716Z"},"content_sha256":"f5a8734fc476202e61e5121c3fb334ee75bbc686da0884ed45c829efeb62221b","schema_version":"1.0","event_id":"sha256:f5a8734fc476202e61e5121c3fb334ee75bbc686da0884ed45c829efeb62221b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:RN6XUZEVGOFEHZ3BO42KAUINI5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Four-Quark Hadrons: an Updated Review","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Alessandro Pilloni, Andrea L. Guerrieri, Angelo Esposito, Antonio D. Polosa, Fulvio Piccinini","submitted_at":"2014-11-21T20:00:04Z","abstract_excerpt":"The past decade witnessed a remarkable proliferation of exotic charmonium-like resonances discovered at accelerators. In particular, the recently observed charged states are clearly not interpretable as q-qbar mesons. Notwithstanding the considerable advances on the experimental side, conflicting theoretical descriptions do not seem to provide a definitive picture about the nature of the so-called XYZ particles. We present here a comprehensive review about this intriguing topic, discussing both those experimental and theoretical aspects which we consider relevant to make further progress in th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.5997","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":"2026-05-18T02:27:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YGNO+j2QUMzWov0DK6npeeW+gkEpMob5MXJCojcgkjIjXyY0MCTwFsdYoe48O6umv3s0o7GIF2IS7mAoHFCDBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T18:28:34.727285Z"},"content_sha256":"58b5353fb7cffac87176fcf21f9cd8d0884422505c73e1b6ce389baa79486040","schema_version":"1.0","event_id":"sha256:58b5353fb7cffac87176fcf21f9cd8d0884422505c73e1b6ce389baa79486040"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RN6XUZEVGOFEHZ3BO42KAUINI5/bundle.json","state_url":"https://pith.science/pith/RN6XUZEVGOFEHZ3BO42KAUINI5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RN6XUZEVGOFEHZ3BO42KAUINI5/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":"2026-05-21T18:28:34Z","links":{"resolver":"https://pith.science/pith/RN6XUZEVGOFEHZ3BO42KAUINI5","bundle":"https://pith.science/pith/RN6XUZEVGOFEHZ3BO42KAUINI5/bundle.json","state":"https://pith.science/pith/RN6XUZEVGOFEHZ3BO42KAUINI5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RN6XUZEVGOFEHZ3BO42KAUINI5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:RN6XUZEVGOFEHZ3BO42KAUINI5","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":"369ee8601f86d3ba3fa8f8982de6421eb7fb1985a60ebfa1b82265d45cd74d79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-21T20:00:04Z","title_canon_sha256":"d6e22482eb18299d6714c8a82098444886ebec0fb8e43d71d2d37ea5763c43cd"},"schema_version":"1.0","source":{"id":"1411.5997","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.5997","created_at":"2026-05-18T02:27:28Z"},{"alias_kind":"arxiv_version","alias_value":"1411.5997v2","created_at":"2026-05-18T02:27:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.5997","created_at":"2026-05-18T02:27:28Z"},{"alias_kind":"pith_short_12","alias_value":"RN6XUZEVGOFE","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_16","alias_value":"RN6XUZEVGOFEHZ3B","created_at":"2026-05-18T12:28:46Z"},{"alias_kind":"pith_short_8","alias_value":"RN6XUZEV","created_at":"2026-05-18T12:28:46Z"}],"graph_snapshots":[{"event_id":"sha256:58b5353fb7cffac87176fcf21f9cd8d0884422505c73e1b6ce389baa79486040","target":"graph","created_at":"2026-05-18T02:27:28Z","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":"The past decade witnessed a remarkable proliferation of exotic charmonium-like resonances discovered at accelerators. In particular, the recently observed charged states are clearly not interpretable as q-qbar mesons. Notwithstanding the considerable advances on the experimental side, conflicting theoretical descriptions do not seem to provide a definitive picture about the nature of the so-called XYZ particles. We present here a comprehensive review about this intriguing topic, discussing both those experimental and theoretical aspects which we consider relevant to make further progress in th","authors_text":"Alessandro Pilloni, Andrea L. Guerrieri, Angelo Esposito, Antonio D. Polosa, Fulvio Piccinini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-21T20:00:04Z","title":"Four-Quark Hadrons: an Updated Review"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.5997","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:f5a8734fc476202e61e5121c3fb334ee75bbc686da0884ed45c829efeb62221b","target":"record","created_at":"2026-05-18T02:27:28Z","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":"369ee8601f86d3ba3fa8f8982de6421eb7fb1985a60ebfa1b82265d45cd74d79","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-21T20:00:04Z","title_canon_sha256":"d6e22482eb18299d6714c8a82098444886ebec0fb8e43d71d2d37ea5763c43cd"},"schema_version":"1.0","source":{"id":"1411.5997","kind":"arxiv","version":2}},"canonical_sha256":"8b7d7a6495338a43e7617734a0510d475c3e12baf47ee2c024a611bdc2fd741a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8b7d7a6495338a43e7617734a0510d475c3e12baf47ee2c024a611bdc2fd741a","first_computed_at":"2026-05-18T02:27:28.950088Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:27:28.950088Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oe2poQTOUfXXJJGHB64NJz2Jg9PcBMCiWZomc4M1pC3E5N1kPRHBKrpOBMNmptyKP8KYmirl240UnijIZVt0Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:27:28.950816Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.5997","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5a8734fc476202e61e5121c3fb334ee75bbc686da0884ed45c829efeb62221b","sha256:58b5353fb7cffac87176fcf21f9cd8d0884422505c73e1b6ce389baa79486040"],"state_sha256":"117a58802405390e886f1d26c2a7602fd02b244e93bb53c9bfe82fb89eeba840"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aB1Mj7QIYbd9bcMzqScPaoqiWT5VMOpZOl2q8iFmF7tSbah1dSfy5z1iEnahcC1hf9/qM6ECVwM1LnCbMfeYCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T18:28:34.730393Z","bundle_sha256":"70e2200d6491b009e530ede6cb1908f3f82d1cbf1149ae285add1f99859f7493"}}