{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:7ECNWUFIG7SSZLG4RAVN4DG4H2","short_pith_number":"pith:7ECNWUFI","canonical_record":{"source":{"id":"1504.02113","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-04-08T20:12:05Z","cross_cats_sorted":["astro-ph.HE","hep-th"],"title_canon_sha256":"f91942eeac1d69d1f18c03066491cc4c26d26fdd18514c7d326f49bf0b6a5793","abstract_canon_sha256":"ecd097cdb95dc5c31a7435810e9fe9720c2f88cc7b5df4901919e76f269c4ef3"},"schema_version":"1.0"},"canonical_sha256":"f904db50a837e52cacdc882ade0cdc3e886879b46cd0cc47207bd3ed8928c98e","source":{"kind":"arxiv","id":"1504.02113","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.02113","created_at":"2026-05-18T01:20:29Z"},{"alias_kind":"arxiv_version","alias_value":"1504.02113v2","created_at":"2026-05-18T01:20:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.02113","created_at":"2026-05-18T01:20:29Z"},{"alias_kind":"pith_short_12","alias_value":"7ECNWUFIG7SS","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7ECNWUFIG7SSZLG4","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7ECNWUFI","created_at":"2026-05-18T12:29:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:7ECNWUFIG7SSZLG4RAVN4DG4H2","target":"record","payload":{"canonical_record":{"source":{"id":"1504.02113","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-04-08T20:12:05Z","cross_cats_sorted":["astro-ph.HE","hep-th"],"title_canon_sha256":"f91942eeac1d69d1f18c03066491cc4c26d26fdd18514c7d326f49bf0b6a5793","abstract_canon_sha256":"ecd097cdb95dc5c31a7435810e9fe9720c2f88cc7b5df4901919e76f269c4ef3"},"schema_version":"1.0"},"canonical_sha256":"f904db50a837e52cacdc882ade0cdc3e886879b46cd0cc47207bd3ed8928c98e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:29.601186Z","signature_b64":"1BDBL58jZNHh/KrED+o4Z0/gy0tEEoWU596IQncfhEbkzXhfiex5wm5cidY1L/FuAFZWrgLKAs+C+914/GaaDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f904db50a837e52cacdc882ade0cdc3e886879b46cd0cc47207bd3ed8928c98e","last_reissued_at":"2026-05-18T01:20:29.600585Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:29.600585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.02113","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":"2026-05-18T01:20:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CPS5GOrf+0Ry3btk6dIMe54pFRuRrhS3V5lVT8/clajGkeFz3KKOwpTVFRm2kwkN7ufXt6Fj79iib88gsd+UBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T10:45:01.707966Z"},"content_sha256":"06ddfd4ea125a9e7ec94762c0b3ba84c90ef509d388c5c4cbcfdf0d91682d432","schema_version":"1.0","event_id":"sha256:06ddfd4ea125a9e7ec94762c0b3ba84c90ef509d388c5c4cbcfdf0d91682d432"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:7ECNWUFIG7SSZLG4RAVN4DG4H2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Electromagnetic Jets from Stars and Black Holes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","hep-th"],"primary_cat":"gr-qc","authors_text":"Alexandru Lupsasca, Maria J. Rodriguez, Samuel E. Gralla","submitted_at":"2015-04-08T20:12:05Z","abstract_excerpt":"We present analytic force-free solutions modeling rotating stars and black holes immersed in the magnetic field of a thin disk that terminates at an inner radius. The solutions are exact in flat spacetime and approximate in Kerr spacetime. The compact object produces a conical jet whose properties carry information about its nature. For example, the jet from a star is surrounded by a current sheet, while that of a black hole is smooth. We compute an effective resistance in each case and compare to the canonical values used in circuit models of energy extraction. These solutions illustrate all "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02113","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":"2026-05-18T01:20:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n+IPlPzkgrL6YPwpdUUEPV8vaXsbmf6Y/83iSrJCx1qnfKYS4RLRkQiezA645I8m7dGJygis0ao7yK2FFLpwCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T10:45:01.708371Z"},"content_sha256":"d9b9172322e39447545b4238a0ae2a533d27ba7a7b9855081381902c1b900ed8","schema_version":"1.0","event_id":"sha256:d9b9172322e39447545b4238a0ae2a533d27ba7a7b9855081381902c1b900ed8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7ECNWUFIG7SSZLG4RAVN4DG4H2/bundle.json","state_url":"https://pith.science/pith/7ECNWUFIG7SSZLG4RAVN4DG4H2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7ECNWUFIG7SSZLG4RAVN4DG4H2/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":"2026-05-21T10:45:01Z","links":{"resolver":"https://pith.science/pith/7ECNWUFIG7SSZLG4RAVN4DG4H2","bundle":"https://pith.science/pith/7ECNWUFIG7SSZLG4RAVN4DG4H2/bundle.json","state":"https://pith.science/pith/7ECNWUFIG7SSZLG4RAVN4DG4H2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7ECNWUFIG7SSZLG4RAVN4DG4H2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7ECNWUFIG7SSZLG4RAVN4DG4H2","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":"ecd097cdb95dc5c31a7435810e9fe9720c2f88cc7b5df4901919e76f269c4ef3","cross_cats_sorted":["astro-ph.HE","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-04-08T20:12:05Z","title_canon_sha256":"f91942eeac1d69d1f18c03066491cc4c26d26fdd18514c7d326f49bf0b6a5793"},"schema_version":"1.0","source":{"id":"1504.02113","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.02113","created_at":"2026-05-18T01:20:29Z"},{"alias_kind":"arxiv_version","alias_value":"1504.02113v2","created_at":"2026-05-18T01:20:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.02113","created_at":"2026-05-18T01:20:29Z"},{"alias_kind":"pith_short_12","alias_value":"7ECNWUFIG7SS","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_16","alias_value":"7ECNWUFIG7SSZLG4","created_at":"2026-05-18T12:29:10Z"},{"alias_kind":"pith_short_8","alias_value":"7ECNWUFI","created_at":"2026-05-18T12:29:10Z"}],"graph_snapshots":[{"event_id":"sha256:d9b9172322e39447545b4238a0ae2a533d27ba7a7b9855081381902c1b900ed8","target":"graph","created_at":"2026-05-18T01:20:29Z","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 analytic force-free solutions modeling rotating stars and black holes immersed in the magnetic field of a thin disk that terminates at an inner radius. The solutions are exact in flat spacetime and approximate in Kerr spacetime. The compact object produces a conical jet whose properties carry information about its nature. For example, the jet from a star is surrounded by a current sheet, while that of a black hole is smooth. We compute an effective resistance in each case and compare to the canonical values used in circuit models of energy extraction. These solutions illustrate all ","authors_text":"Alexandru Lupsasca, Maria J. Rodriguez, Samuel E. Gralla","cross_cats":["astro-ph.HE","hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-04-08T20:12:05Z","title":"Electromagnetic Jets from Stars and Black Holes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02113","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":"sha256:06ddfd4ea125a9e7ec94762c0b3ba84c90ef509d388c5c4cbcfdf0d91682d432","target":"record","created_at":"2026-05-18T01:20:29Z","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":"ecd097cdb95dc5c31a7435810e9fe9720c2f88cc7b5df4901919e76f269c4ef3","cross_cats_sorted":["astro-ph.HE","hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-04-08T20:12:05Z","title_canon_sha256":"f91942eeac1d69d1f18c03066491cc4c26d26fdd18514c7d326f49bf0b6a5793"},"schema_version":"1.0","source":{"id":"1504.02113","kind":"arxiv","version":2}},"canonical_sha256":"f904db50a837e52cacdc882ade0cdc3e886879b46cd0cc47207bd3ed8928c98e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f904db50a837e52cacdc882ade0cdc3e886879b46cd0cc47207bd3ed8928c98e","first_computed_at":"2026-05-18T01:20:29.600585Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:29.600585Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1BDBL58jZNHh/KrED+o4Z0/gy0tEEoWU596IQncfhEbkzXhfiex5wm5cidY1L/FuAFZWrgLKAs+C+914/GaaDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:29.601186Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.02113","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:06ddfd4ea125a9e7ec94762c0b3ba84c90ef509d388c5c4cbcfdf0d91682d432","sha256:d9b9172322e39447545b4238a0ae2a533d27ba7a7b9855081381902c1b900ed8"],"state_sha256":"2985a9b08a25aa1daeece162b5332130fff93902e2f6a9deadb47f5e59bb849b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yC2UJAsQd4jalqEG85lkIRCZB0ozKjmtEfoumV4TtiTZSDfclOo/Oov13m9tQ8Ox/1FzecoIX+5BPrM5yI7UBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T10:45:01.710538Z","bundle_sha256":"f596f9138a2f608a0dee2b4ce67a36dc42ea53a219d518912bfef8c83a36afc4"}}