{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:XBNIFP66HZ3B5BVLAKXHR4INSD","short_pith_number":"pith:XBNIFP66","canonical_record":{"source":{"id":"1507.08045","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-07-29T08:04:40Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"62eab8051af8b5dbe4c62ee517115d146b6e25edf3329ce30f52bf7f96a5f748","abstract_canon_sha256":"925ff5c108fa4f2009005843af3ab1a96b79832d701bed7a6a5e734a53742a42"},"schema_version":"1.0"},"canonical_sha256":"b85a82bfde3e761e86ab02ae78f10d90e85778091ef86336c04ca263e2f71952","source":{"kind":"arxiv","id":"1507.08045","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.08045","created_at":"2026-05-18T01:36:08Z"},{"alias_kind":"arxiv_version","alias_value":"1507.08045v1","created_at":"2026-05-18T01:36:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.08045","created_at":"2026-05-18T01:36:08Z"},{"alias_kind":"pith_short_12","alias_value":"XBNIFP66HZ3B","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XBNIFP66HZ3B5BVL","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XBNIFP66","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:XBNIFP66HZ3B5BVLAKXHR4INSD","target":"record","payload":{"canonical_record":{"source":{"id":"1507.08045","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-07-29T08:04:40Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"62eab8051af8b5dbe4c62ee517115d146b6e25edf3329ce30f52bf7f96a5f748","abstract_canon_sha256":"925ff5c108fa4f2009005843af3ab1a96b79832d701bed7a6a5e734a53742a42"},"schema_version":"1.0"},"canonical_sha256":"b85a82bfde3e761e86ab02ae78f10d90e85778091ef86336c04ca263e2f71952","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:08.536774Z","signature_b64":"QB6nlD/2uqiFUrBHnA08r7hYVQ8WOhmhE5IUcWd/6qPEI8uNSBIJJoVqzYWhlcy05UIGXVVvF8pqagH36Po/DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b85a82bfde3e761e86ab02ae78f10d90e85778091ef86336c04ca263e2f71952","last_reissued_at":"2026-05-18T01:36:08.536185Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:08.536185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1507.08045","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":"2026-05-18T01:36:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sYOvKeFmF9vmiauUhynkPeFoOHq2QmdpEE1BHjDkxuMAvJ4aObpRsva0DUNjlxPGHUXHFHOvmuaShPeqZn1eCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T22:48:54.692414Z"},"content_sha256":"3f8c08a04dc49599e71c1adc63f62762548a22d8551b3f3fc975f7c313f78280","schema_version":"1.0","event_id":"sha256:3f8c08a04dc49599e71c1adc63f62762548a22d8551b3f3fc975f7c313f78280"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:XBNIFP66HZ3B5BVLAKXHR4INSD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Unraveling the pattern of the $XYZ$ mesons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"A. Valcarce, J. Vijande","submitted_at":"2015-07-29T08:04:40Z","abstract_excerpt":"We present a plausible mechanism for the origin of the $XYZ$ mesons in the heavy meson spectra within a standard quark-model picture. We discuss the conditions required for the existence of four--quark bound states or resonances contributing to the heavy meson spectra, being either compact or molecular. We concentrate on charmonium and bottomonium spectra, where several new states, difficult to understand as simple quark-antiquark pairs, have been reported by different experimental collaborations. The pivotal role played by entangled meson-meson thresholds is emphasized."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.08045","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":"2026-05-18T01:36:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2olibmn9Qpuw6Cv2XZLWlMubAQxkGi21oK6yjAy3uTbfl5xlTenrCKJzSReAKBZgW47tMMnTfBFnmNkW6Y0jCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T22:48:54.692779Z"},"content_sha256":"3d4a1495038247ecc2e6d3d6379f0dceba4db8728dcb3335ebfa4fed6c7a1eda","schema_version":"1.0","event_id":"sha256:3d4a1495038247ecc2e6d3d6379f0dceba4db8728dcb3335ebfa4fed6c7a1eda"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XBNIFP66HZ3B5BVLAKXHR4INSD/bundle.json","state_url":"https://pith.science/pith/XBNIFP66HZ3B5BVLAKXHR4INSD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XBNIFP66HZ3B5BVLAKXHR4INSD/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":"2026-06-11T22:48:54Z","links":{"resolver":"https://pith.science/pith/XBNIFP66HZ3B5BVLAKXHR4INSD","bundle":"https://pith.science/pith/XBNIFP66HZ3B5BVLAKXHR4INSD/bundle.json","state":"https://pith.science/pith/XBNIFP66HZ3B5BVLAKXHR4INSD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XBNIFP66HZ3B5BVLAKXHR4INSD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:XBNIFP66HZ3B5BVLAKXHR4INSD","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":"925ff5c108fa4f2009005843af3ab1a96b79832d701bed7a6a5e734a53742a42","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-07-29T08:04:40Z","title_canon_sha256":"62eab8051af8b5dbe4c62ee517115d146b6e25edf3329ce30f52bf7f96a5f748"},"schema_version":"1.0","source":{"id":"1507.08045","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.08045","created_at":"2026-05-18T01:36:08Z"},{"alias_kind":"arxiv_version","alias_value":"1507.08045v1","created_at":"2026-05-18T01:36:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.08045","created_at":"2026-05-18T01:36:08Z"},{"alias_kind":"pith_short_12","alias_value":"XBNIFP66HZ3B","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"XBNIFP66HZ3B5BVL","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"XBNIFP66","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:3d4a1495038247ecc2e6d3d6379f0dceba4db8728dcb3335ebfa4fed6c7a1eda","target":"graph","created_at":"2026-05-18T01:36:08Z","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 present a plausible mechanism for the origin of the $XYZ$ mesons in the heavy meson spectra within a standard quark-model picture. We discuss the conditions required for the existence of four--quark bound states or resonances contributing to the heavy meson spectra, being either compact or molecular. We concentrate on charmonium and bottomonium spectra, where several new states, difficult to understand as simple quark-antiquark pairs, have been reported by different experimental collaborations. The pivotal role played by entangled meson-meson thresholds is emphasized.","authors_text":"A. Valcarce, J. Vijande","cross_cats":["nucl-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-07-29T08:04:40Z","title":"Unraveling the pattern of the $XYZ$ mesons"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.08045","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":"sha256:3f8c08a04dc49599e71c1adc63f62762548a22d8551b3f3fc975f7c313f78280","target":"record","created_at":"2026-05-18T01:36:08Z","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":"925ff5c108fa4f2009005843af3ab1a96b79832d701bed7a6a5e734a53742a42","cross_cats_sorted":["nucl-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-07-29T08:04:40Z","title_canon_sha256":"62eab8051af8b5dbe4c62ee517115d146b6e25edf3329ce30f52bf7f96a5f748"},"schema_version":"1.0","source":{"id":"1507.08045","kind":"arxiv","version":1}},"canonical_sha256":"b85a82bfde3e761e86ab02ae78f10d90e85778091ef86336c04ca263e2f71952","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b85a82bfde3e761e86ab02ae78f10d90e85778091ef86336c04ca263e2f71952","first_computed_at":"2026-05-18T01:36:08.536185Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:08.536185Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QB6nlD/2uqiFUrBHnA08r7hYVQ8WOhmhE5IUcWd/6qPEI8uNSBIJJoVqzYWhlcy05UIGXVVvF8pqagH36Po/DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:08.536774Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.08045","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3f8c08a04dc49599e71c1adc63f62762548a22d8551b3f3fc975f7c313f78280","sha256:3d4a1495038247ecc2e6d3d6379f0dceba4db8728dcb3335ebfa4fed6c7a1eda"],"state_sha256":"0195332ccbde0778fe0d784e7081acc28ccc5f2e3e587556aa406d97119727db"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gBi9xiw+hkpwC8yC0xaIoTt05MuIHlYo+vaxHKrvFtg0TfK1iizuEMc97zUhSIbPdOTjo94PEIoYf7ee46FNCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T22:48:54.695113Z","bundle_sha256":"175cd09da624306273da3d2c7227a09f4e63be6acf2c5d073b706cae5b1a5ade"}}