{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:PDJSH4GYVXJRTPDQAZ5MS7SZ22","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":"5f8e5f352dd125d0bc92aa35b95344ed5fbf414a2f64b2798cf61f6b0b352daf","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2006-10-02T12:33:34Z","title_canon_sha256":"082f7d93d1cae6274579e42bb80cb0027980b7ab129b739a0c687dcbf586bc57"},"schema_version":"1.0","source":{"id":"hep-th/0610007","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0610007","created_at":"2026-05-18T04:38:26Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0610007v2","created_at":"2026-05-18T04:38:26Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0610007","created_at":"2026-05-18T04:38:26Z"},{"alias_kind":"pith_short_12","alias_value":"PDJSH4GYVXJR","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_16","alias_value":"PDJSH4GYVXJRTPDQ","created_at":"2026-05-18T12:25:54Z"},{"alias_kind":"pith_short_8","alias_value":"PDJSH4GY","created_at":"2026-05-18T12:25:54Z"}],"graph_snapshots":[{"event_id":"sha256:3a01d37ac9a32c0778dd01cfbfe680420a8dda5c724268b1b8f1287c0ea6e353","target":"graph","created_at":"2026-05-18T04:38:26Z","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 report on progress towards the construction of SM-like gauge theories on the world-volume of D-branes at a Calabi-Yau singularity. In particular, we work out the topological conditions on the embedding of the singularity inside a compact CY threefold, that select hypercharge as the only light U(1) gauge factor. We apply this insight to the proposed open string realization of the SM of hep-th/0508089, based on a D3-brane at a dP_8 singularity, and present a geometric construction of a compact Calabi-Yau threefold with all the required topological properties. We comment on the relevance of D-","authors_text":"David R. Morrison, Dmitry Malyshev, Herman Verlinde, Martijn Wijnholt, Matthew Buican","cross_cats":[],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"2006-10-02T12:33:34Z","title":"D-branes at Singularities, Compactification, and Hypercharge"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0610007","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:e71583a76b2e9fc902f82953bcf05e7ded6a104d6d9e89fe9a5915a5388d75c1","target":"record","created_at":"2026-05-18T04:38:26Z","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":"5f8e5f352dd125d0bc92aa35b95344ed5fbf414a2f64b2798cf61f6b0b352daf","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2006-10-02T12:33:34Z","title_canon_sha256":"082f7d93d1cae6274579e42bb80cb0027980b7ab129b739a0c687dcbf586bc57"},"schema_version":"1.0","source":{"id":"hep-th/0610007","kind":"arxiv","version":2}},"canonical_sha256":"78d323f0d8add319bc70067ac97e59d6b3488c3d88b288b900aab81a9750c430","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78d323f0d8add319bc70067ac97e59d6b3488c3d88b288b900aab81a9750c430","first_computed_at":"2026-05-18T04:38:26.427817Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:38:26.427817Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j15qvqpBIGXDPh0PO7M6m4cBJNMDltrUuZ7EUD/OZfPg8KZrhM70AhtZ75LWSK+PvMoIXTIxjoSqwToCWC5qDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:38:26.428493Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/0610007","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e71583a76b2e9fc902f82953bcf05e7ded6a104d6d9e89fe9a5915a5388d75c1","sha256:3a01d37ac9a32c0778dd01cfbfe680420a8dda5c724268b1b8f1287c0ea6e353"],"state_sha256":"63f50315eec9bc98084fb89fc1cc80bf05121d7d13d39cd37bc5a6ad762aefd9"}