{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:7CC2QRJ3Z7Z62XHSYKQQZQE5FR","short_pith_number":"pith:7CC2QRJ3","canonical_record":{"source":{"id":"hep-th/0101018","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2001-01-02T09:13:21Z","cross_cats_sorted":[],"title_canon_sha256":"bd26eeaba9bf1a637a238bf96c4d9f8199cf263dedffb488be4bf6bf41ff3278","abstract_canon_sha256":"ab7bbe3a40babefebde4d9c57d3e92ea83520040077678f4eaa62d677f209484"},"schema_version":"1.0"},"canonical_sha256":"f885a8453bcff3ed5cf2c2a10cc09d2c783373bc339eeffd0e3e2683201bb642","source":{"kind":"arxiv","id":"hep-th/0101018","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0101018","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0101018v1","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0101018","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"pith_short_12","alias_value":"7CC2QRJ3Z7Z6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"7CC2QRJ3Z7Z62XHS","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"7CC2QRJ3","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:7CC2QRJ3Z7Z62XHSYKQQZQE5FR","target":"record","payload":{"canonical_record":{"source":{"id":"hep-th/0101018","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2001-01-02T09:13:21Z","cross_cats_sorted":[],"title_canon_sha256":"bd26eeaba9bf1a637a238bf96c4d9f8199cf263dedffb488be4bf6bf41ff3278","abstract_canon_sha256":"ab7bbe3a40babefebde4d9c57d3e92ea83520040077678f4eaa62d677f209484"},"schema_version":"1.0"},"canonical_sha256":"f885a8453bcff3ed5cf2c2a10cc09d2c783373bc339eeffd0e3e2683201bb642","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:38:54.894384Z","signature_b64":"WsbqdIcZwthEwA5u8M6V3f3D8kuDYizyDLy2+Bu3K5fRDWpjGCUN+oh4KATrvV8wdBOZOf12260+a9yBBsvmBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f885a8453bcff3ed5cf2c2a10cc09d2c783373bc339eeffd0e3e2683201bb642","last_reissued_at":"2026-05-18T01:38:54.893707Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:38:54.893707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-th/0101018","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":"2026-05-18T01:38:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"puP2CtVnCE7Y1qygceR2FbGspUwkhmMP+TvE/eyHoSyHLw3ztPZ6q/dk/YaTJ4Ut8vGy4zssVmpapkgMTxjzDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T20:51:54.543476Z"},"content_sha256":"f5d74e00724b02b3380e2d87189bf5fd2393a1c03fb06dbc071c0326ad9671ec","schema_version":"1.0","event_id":"sha256:f5d74e00724b02b3380e2d87189bf5fd2393a1c03fb06dbc071c0326ad9671ec"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:7CC2QRJ3Z7Z62XHSYKQQZQE5FR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"D-branes and constant electro-magnetic backgrounds","license":"","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"A. Sevrin, J. Bogaerts, J. Troost, S. van der Loo, W. Troost","submitted_at":"2001-01-02T09:13:21Z","abstract_excerpt":"We probe the effective worldvolume theory of a set of coinciding D-branes by switching on constant electro-magnetic fields on them. The comparison of the mass spectrum predicted by string theory with the mass spectrum obtained from the effective action provides insights in the structure of the effective theory."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0101018","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":"2026-05-18T01:38:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b1o4FPWPy1svFpYBcZTi/aXIVBP/72p5llmr/6iDNQkQDB7FC/AleodVGciWBRHefAyu6Iv1PmVHM6lPeu91DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T20:51:54.544210Z"},"content_sha256":"8994628d9bfb8307b9d8b83617ffa4c8db8a512b6c6b7d66b4a177df7e567958","schema_version":"1.0","event_id":"sha256:8994628d9bfb8307b9d8b83617ffa4c8db8a512b6c6b7d66b4a177df7e567958"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7CC2QRJ3Z7Z62XHSYKQQZQE5FR/bundle.json","state_url":"https://pith.science/pith/7CC2QRJ3Z7Z62XHSYKQQZQE5FR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7CC2QRJ3Z7Z62XHSYKQQZQE5FR/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":"2026-06-07T20:51:54Z","links":{"resolver":"https://pith.science/pith/7CC2QRJ3Z7Z62XHSYKQQZQE5FR","bundle":"https://pith.science/pith/7CC2QRJ3Z7Z62XHSYKQQZQE5FR/bundle.json","state":"https://pith.science/pith/7CC2QRJ3Z7Z62XHSYKQQZQE5FR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7CC2QRJ3Z7Z62XHSYKQQZQE5FR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:7CC2QRJ3Z7Z62XHSYKQQZQE5FR","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":"ab7bbe3a40babefebde4d9c57d3e92ea83520040077678f4eaa62d677f209484","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2001-01-02T09:13:21Z","title_canon_sha256":"bd26eeaba9bf1a637a238bf96c4d9f8199cf263dedffb488be4bf6bf41ff3278"},"schema_version":"1.0","source":{"id":"hep-th/0101018","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-th/0101018","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"arxiv_version","alias_value":"hep-th/0101018v1","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-th/0101018","created_at":"2026-05-18T01:38:54Z"},{"alias_kind":"pith_short_12","alias_value":"7CC2QRJ3Z7Z6","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"7CC2QRJ3Z7Z62XHS","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"7CC2QRJ3","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:8994628d9bfb8307b9d8b83617ffa4c8db8a512b6c6b7d66b4a177df7e567958","target":"graph","created_at":"2026-05-18T01:38:54Z","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 probe the effective worldvolume theory of a set of coinciding D-branes by switching on constant electro-magnetic fields on them. The comparison of the mass spectrum predicted by string theory with the mass spectrum obtained from the effective action provides insights in the structure of the effective theory.","authors_text":"A. Sevrin, J. Bogaerts, J. Troost, S. van der Loo, W. Troost","cross_cats":[],"headline":"","license":"","primary_cat":"hep-th","submitted_at":"2001-01-02T09:13:21Z","title":"D-branes and constant electro-magnetic backgrounds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-th/0101018","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:f5d74e00724b02b3380e2d87189bf5fd2393a1c03fb06dbc071c0326ad9671ec","target":"record","created_at":"2026-05-18T01:38:54Z","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":"ab7bbe3a40babefebde4d9c57d3e92ea83520040077678f4eaa62d677f209484","cross_cats_sorted":[],"license":"","primary_cat":"hep-th","submitted_at":"2001-01-02T09:13:21Z","title_canon_sha256":"bd26eeaba9bf1a637a238bf96c4d9f8199cf263dedffb488be4bf6bf41ff3278"},"schema_version":"1.0","source":{"id":"hep-th/0101018","kind":"arxiv","version":1}},"canonical_sha256":"f885a8453bcff3ed5cf2c2a10cc09d2c783373bc339eeffd0e3e2683201bb642","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f885a8453bcff3ed5cf2c2a10cc09d2c783373bc339eeffd0e3e2683201bb642","first_computed_at":"2026-05-18T01:38:54.893707Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:38:54.893707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WsbqdIcZwthEwA5u8M6V3f3D8kuDYizyDLy2+Bu3K5fRDWpjGCUN+oh4KATrvV8wdBOZOf12260+a9yBBsvmBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:38:54.894384Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-th/0101018","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f5d74e00724b02b3380e2d87189bf5fd2393a1c03fb06dbc071c0326ad9671ec","sha256:8994628d9bfb8307b9d8b83617ffa4c8db8a512b6c6b7d66b4a177df7e567958"],"state_sha256":"2187801e7b8ec58a4e3357b8e451d680ad40188fbb554e9dbe73dcc593a77ab6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mGRNqdLFZ2dcDXx6brjSBxrSFAQpifXXJbvchug/sUDOserB1++baqg0QG26tJLn+wFpgYmV7vtbSuioLDkNAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T20:51:54.547680Z","bundle_sha256":"19690a8899903eca3c1a04db4bba1a62634dd93297e96edba81eaa4588d5936e"}}