{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:7VHETZZRFMBS2MLT7IEK6GHGO6","short_pith_number":"pith:7VHETZZR","canonical_record":{"source":{"id":"1508.03823","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-16T13:49:57Z","cross_cats_sorted":[],"title_canon_sha256":"4cfcc5a5e2aed9e96c837ac2d6fdc7ffca022fe4f2b396d7a8406322ac1fb5de","abstract_canon_sha256":"2ee2d95d62c2b660681d2e5e4c3d63cdacbd444afd04819958b7919262494f4d"},"schema_version":"1.0"},"canonical_sha256":"fd4e49e7312b032d3173fa08af18e677b747e8d26fcb7aaf1653f72c1f2ba951","source":{"kind":"arxiv","id":"1508.03823","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.03823","created_at":"2026-05-18T01:04:22Z"},{"alias_kind":"arxiv_version","alias_value":"1508.03823v1","created_at":"2026-05-18T01:04:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.03823","created_at":"2026-05-18T01:04:22Z"},{"alias_kind":"pith_short_12","alias_value":"7VHETZZRFMBS","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7VHETZZRFMBS2MLT","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7VHETZZR","created_at":"2026-05-18T12:29:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:7VHETZZRFMBS2MLT7IEK6GHGO6","target":"record","payload":{"canonical_record":{"source":{"id":"1508.03823","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-16T13:49:57Z","cross_cats_sorted":[],"title_canon_sha256":"4cfcc5a5e2aed9e96c837ac2d6fdc7ffca022fe4f2b396d7a8406322ac1fb5de","abstract_canon_sha256":"2ee2d95d62c2b660681d2e5e4c3d63cdacbd444afd04819958b7919262494f4d"},"schema_version":"1.0"},"canonical_sha256":"fd4e49e7312b032d3173fa08af18e677b747e8d26fcb7aaf1653f72c1f2ba951","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:22.592834Z","signature_b64":"BvdatSORTZdODkFpDbSPWqrosIfv7oAdcS0PUxU0pB2VaYfCDcCH5iw2Ukm40po7OCumCO3mkrQmRG1+ALk8Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd4e49e7312b032d3173fa08af18e677b747e8d26fcb7aaf1653f72c1f2ba951","last_reissued_at":"2026-05-18T01:04:22.592300Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:22.592300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.03823","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":"2026-05-18T01:04:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g7rOmcLfiStIruLjbVhQoU8s8BTm2jssvdOGL33byL4ITwdF3YvXBOzRPM4HOpgj3wEtKIUFYqrb3ZhmOOZ/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T21:59:04.101911Z"},"content_sha256":"6e2a41974f3045e5ef63a54cb7f0950e968a4f21cf263eba40c2fa9b47bc8a63","schema_version":"1.0","event_id":"sha256:6e2a41974f3045e5ef63a54cb7f0950e968a4f21cf263eba40c2fa9b47bc8a63"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:7VHETZZRFMBS2MLT7IEK6GHGO6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"XYZ: four-quark states?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Pilloni","submitted_at":"2015-08-16T13:49:57Z","abstract_excerpt":"The observation of many unexpected states decaying into heavy quarkonia has challenged the usual Q-Qbar interpretation. We will discuss the nature of some of the charmonium-like resonances recently observed by BES III and LHCb, and their identication according to the compact tetraquark model. We also commment the production of light nuclei in hadron collisions and the relevance for the physics of the X(3872)."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.03823","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":"2026-05-18T01:04:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/lRqQ1c6tYQxFSY4EfGPIV8eIVtZ5SV4pZeOK1OPwo6yG6+C9a1fAmqH3EFI6spNjBRGRg2ZbkgdivIYnsIpBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T21:59:04.102492Z"},"content_sha256":"6a8e178034f0eb2db766cf3f7218ccfad357a48304ec2d25b6e19a0128646f57","schema_version":"1.0","event_id":"sha256:6a8e178034f0eb2db766cf3f7218ccfad357a48304ec2d25b6e19a0128646f57"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7VHETZZRFMBS2MLT7IEK6GHGO6/bundle.json","state_url":"https://pith.science/pith/7VHETZZRFMBS2MLT7IEK6GHGO6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7VHETZZRFMBS2MLT7IEK6GHGO6/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":"2026-06-06T21:59:04Z","links":{"resolver":"https://pith.science/pith/7VHETZZRFMBS2MLT7IEK6GHGO6","bundle":"https://pith.science/pith/7VHETZZRFMBS2MLT7IEK6GHGO6/bundle.json","state":"https://pith.science/pith/7VHETZZRFMBS2MLT7IEK6GHGO6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7VHETZZRFMBS2MLT7IEK6GHGO6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7VHETZZRFMBS2MLT7IEK6GHGO6","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":"2ee2d95d62c2b660681d2e5e4c3d63cdacbd444afd04819958b7919262494f4d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-16T13:49:57Z","title_canon_sha256":"4cfcc5a5e2aed9e96c837ac2d6fdc7ffca022fe4f2b396d7a8406322ac1fb5de"},"schema_version":"1.0","source":{"id":"1508.03823","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.03823","created_at":"2026-05-18T01:04:22Z"},{"alias_kind":"arxiv_version","alias_value":"1508.03823v1","created_at":"2026-05-18T01:04:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.03823","created_at":"2026-05-18T01:04:22Z"},{"alias_kind":"pith_short_12","alias_value":"7VHETZZRFMBS","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7VHETZZRFMBS2MLT","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7VHETZZR","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:6a8e178034f0eb2db766cf3f7218ccfad357a48304ec2d25b6e19a0128646f57","target":"graph","created_at":"2026-05-18T01:04:22Z","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 observation of many unexpected states decaying into heavy quarkonia has challenged the usual Q-Qbar interpretation. We will discuss the nature of some of the charmonium-like resonances recently observed by BES III and LHCb, and their identication according to the compact tetraquark model. We also commment the production of light nuclei in hadron collisions and the relevance for the physics of the X(3872).","authors_text":"A. Pilloni","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-16T13:49:57Z","title":"XYZ: four-quark states?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.03823","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":"sha256:6e2a41974f3045e5ef63a54cb7f0950e968a4f21cf263eba40c2fa9b47bc8a63","target":"record","created_at":"2026-05-18T01:04:22Z","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":"2ee2d95d62c2b660681d2e5e4c3d63cdacbd444afd04819958b7919262494f4d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-08-16T13:49:57Z","title_canon_sha256":"4cfcc5a5e2aed9e96c837ac2d6fdc7ffca022fe4f2b396d7a8406322ac1fb5de"},"schema_version":"1.0","source":{"id":"1508.03823","kind":"arxiv","version":1}},"canonical_sha256":"fd4e49e7312b032d3173fa08af18e677b747e8d26fcb7aaf1653f72c1f2ba951","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd4e49e7312b032d3173fa08af18e677b747e8d26fcb7aaf1653f72c1f2ba951","first_computed_at":"2026-05-18T01:04:22.592300Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:22.592300Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BvdatSORTZdODkFpDbSPWqrosIfv7oAdcS0PUxU0pB2VaYfCDcCH5iw2Ukm40po7OCumCO3mkrQmRG1+ALk8Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:22.592834Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.03823","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6e2a41974f3045e5ef63a54cb7f0950e968a4f21cf263eba40c2fa9b47bc8a63","sha256:6a8e178034f0eb2db766cf3f7218ccfad357a48304ec2d25b6e19a0128646f57"],"state_sha256":"98e76bc9e2cdfa761a2b6249f59b400d71878e71f37136c5a9db0cec9704c411"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bEDWXKAPLBRjKYbjvob+EEFmCTWpjoj7UCNjxLB1b45X77lue7lHCH8NzCoIkF3i1ExfxcFT3f77tCeGCI+lAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T21:59:04.105944Z","bundle_sha256":"3071789568ec53e436d3bd118e6e78435d1d5216c466ce618a43cbda854a7d3d"}}