{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:W5RGCMYHSW5BQT7KDPIMMMTMNG","short_pith_number":"pith:W5RGCMYH","canonical_record":{"source":{"id":"1902.01974","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-02-05T23:23:31Z","cross_cats_sorted":[],"title_canon_sha256":"eea5cd2e07f3e5750bb9fd8a4a2e5f6034edab99256564a8cdefb2b72aa2d23e","abstract_canon_sha256":"44680654705a286d27064b685edef76652a8e0133e09026d46bcdcac0114423c"},"schema_version":"1.0"},"canonical_sha256":"b76261330795ba184fea1bd0c6326c69969b564ed5c3cd0ad367a40d40698dd3","source":{"kind":"arxiv","id":"1902.01974","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.01974","created_at":"2026-05-17T23:53:20Z"},{"alias_kind":"arxiv_version","alias_value":"1902.01974v1","created_at":"2026-05-17T23:53:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.01974","created_at":"2026-05-17T23:53:20Z"},{"alias_kind":"pith_short_12","alias_value":"W5RGCMYHSW5B","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"W5RGCMYHSW5BQT7K","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"W5RGCMYH","created_at":"2026-05-18T12:33:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:W5RGCMYHSW5BQT7KDPIMMMTMNG","target":"record","payload":{"canonical_record":{"source":{"id":"1902.01974","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-02-05T23:23:31Z","cross_cats_sorted":[],"title_canon_sha256":"eea5cd2e07f3e5750bb9fd8a4a2e5f6034edab99256564a8cdefb2b72aa2d23e","abstract_canon_sha256":"44680654705a286d27064b685edef76652a8e0133e09026d46bcdcac0114423c"},"schema_version":"1.0"},"canonical_sha256":"b76261330795ba184fea1bd0c6326c69969b564ed5c3cd0ad367a40d40698dd3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:53:20.502328Z","signature_b64":"KS6O3rz3Fci0xn7G5kZU31z/J3uA6BWW8j3lDBVINh+9KXkz33MBNUCgL8SXpI85N3IHDmWwLh/nQGRMTNdVBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b76261330795ba184fea1bd0c6326c69969b564ed5c3cd0ad367a40d40698dd3","last_reissued_at":"2026-05-17T23:53:20.501604Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:53:20.501604Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.01974","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":"2026-05-17T23:53:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l//JV6ATMoWE7/q1QTU2M6QnMvQwSSBVBQDND7ToKTO9/FN4pN1rHt7vLt59I+tiGPfkbO5ExUiaEVACnmTmBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:21:40.360058Z"},"content_sha256":"43aa9f7359a798f890df33e9176a94f8ee988c7cfd60d5782eb40317190bd1b8","schema_version":"1.0","event_id":"sha256:43aa9f7359a798f890df33e9176a94f8ee988c7cfd60d5782eb40317190bd1b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:W5RGCMYHSW5BQT7KDPIMMMTMNG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraints on Gamma-ray Burst Inner Engines in a Blandford-Znajek Framework","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Chris Fryer, Chris Torres, Jonah Miller, Neelima Prasad, Nicole M. Lloyd-Ronning, Phillip Martin","submitted_at":"2019-02-05T23:23:31Z","abstract_excerpt":"Under the assumption that a Gamma-ray Burst (GRB) is ultimately produced by a Blandford-Znajek (BZ) jet from a highly spinning black hole BH, we put limits on the magnetic field and BH mass needed to power observed long and short GRBs. For BHs in the range of $2-10 M_{\\odot}$ (for long GRBs) and $0.5-4 M_{\\odot}$ (for short GRBs), we find magnetic fields in the range of $5x10^{14} \\lesssim B \\lesssim 10^{17}$ G are needed to power the observed GRBs. Under the simple assumption of flux conservation, we estimate the magnetic fields of the progenitor systems for both long and short GRBs, finding "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.01974","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":"2026-05-17T23:53:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uHa3R1TcMyLIjAqxpMkMHSdXx0IObL94pWE7jZ99lIYBDnk9aRgKr5a5y13HvFFC7MoiIVJnrSHTbGPO6bKDCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T07:21:40.360788Z"},"content_sha256":"7e0396e90adf7b3722098eeb7f159e002a81522467351583bda23d932f72c13f","schema_version":"1.0","event_id":"sha256:7e0396e90adf7b3722098eeb7f159e002a81522467351583bda23d932f72c13f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W5RGCMYHSW5BQT7KDPIMMMTMNG/bundle.json","state_url":"https://pith.science/pith/W5RGCMYHSW5BQT7KDPIMMMTMNG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W5RGCMYHSW5BQT7KDPIMMMTMNG/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":"2026-05-26T07:21:40Z","links":{"resolver":"https://pith.science/pith/W5RGCMYHSW5BQT7KDPIMMMTMNG","bundle":"https://pith.science/pith/W5RGCMYHSW5BQT7KDPIMMMTMNG/bundle.json","state":"https://pith.science/pith/W5RGCMYHSW5BQT7KDPIMMMTMNG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W5RGCMYHSW5BQT7KDPIMMMTMNG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:W5RGCMYHSW5BQT7KDPIMMMTMNG","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":"44680654705a286d27064b685edef76652a8e0133e09026d46bcdcac0114423c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-02-05T23:23:31Z","title_canon_sha256":"eea5cd2e07f3e5750bb9fd8a4a2e5f6034edab99256564a8cdefb2b72aa2d23e"},"schema_version":"1.0","source":{"id":"1902.01974","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.01974","created_at":"2026-05-17T23:53:20Z"},{"alias_kind":"arxiv_version","alias_value":"1902.01974v1","created_at":"2026-05-17T23:53:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.01974","created_at":"2026-05-17T23:53:20Z"},{"alias_kind":"pith_short_12","alias_value":"W5RGCMYHSW5B","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_16","alias_value":"W5RGCMYHSW5BQT7K","created_at":"2026-05-18T12:33:30Z"},{"alias_kind":"pith_short_8","alias_value":"W5RGCMYH","created_at":"2026-05-18T12:33:30Z"}],"graph_snapshots":[{"event_id":"sha256:7e0396e90adf7b3722098eeb7f159e002a81522467351583bda23d932f72c13f","target":"graph","created_at":"2026-05-17T23:53:20Z","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":"Under the assumption that a Gamma-ray Burst (GRB) is ultimately produced by a Blandford-Znajek (BZ) jet from a highly spinning black hole BH, we put limits on the magnetic field and BH mass needed to power observed long and short GRBs. For BHs in the range of $2-10 M_{\\odot}$ (for long GRBs) and $0.5-4 M_{\\odot}$ (for short GRBs), we find magnetic fields in the range of $5x10^{14} \\lesssim B \\lesssim 10^{17}$ G are needed to power the observed GRBs. Under the simple assumption of flux conservation, we estimate the magnetic fields of the progenitor systems for both long and short GRBs, finding ","authors_text":"Chris Fryer, Chris Torres, Jonah Miller, Neelima Prasad, Nicole M. Lloyd-Ronning, Phillip Martin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-02-05T23:23:31Z","title":"Constraints on Gamma-ray Burst Inner Engines in a Blandford-Znajek Framework"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.01974","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":"sha256:43aa9f7359a798f890df33e9176a94f8ee988c7cfd60d5782eb40317190bd1b8","target":"record","created_at":"2026-05-17T23:53:20Z","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":"44680654705a286d27064b685edef76652a8e0133e09026d46bcdcac0114423c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-02-05T23:23:31Z","title_canon_sha256":"eea5cd2e07f3e5750bb9fd8a4a2e5f6034edab99256564a8cdefb2b72aa2d23e"},"schema_version":"1.0","source":{"id":"1902.01974","kind":"arxiv","version":1}},"canonical_sha256":"b76261330795ba184fea1bd0c6326c69969b564ed5c3cd0ad367a40d40698dd3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b76261330795ba184fea1bd0c6326c69969b564ed5c3cd0ad367a40d40698dd3","first_computed_at":"2026-05-17T23:53:20.501604Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:53:20.501604Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KS6O3rz3Fci0xn7G5kZU31z/J3uA6BWW8j3lDBVINh+9KXkz33MBNUCgL8SXpI85N3IHDmWwLh/nQGRMTNdVBg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:53:20.502328Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.01974","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43aa9f7359a798f890df33e9176a94f8ee988c7cfd60d5782eb40317190bd1b8","sha256:7e0396e90adf7b3722098eeb7f159e002a81522467351583bda23d932f72c13f"],"state_sha256":"c5f74cbf1a6d7a643a426acbb2fcb9d5a8150f160b00d5537a6235031db7655f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5Em7d7eZz09kIPzE/QLsTttwOvYVl/HhHWH5UiANmsRxznKYuieoQ18sl84pWdPCJsIPKj1QAlKRye0QQ1inCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T07:21:40.364544Z","bundle_sha256":"d4e084a2969721237db0a624dfdf4aa5f7f6f6ed06c8c258643b25dfccaad12b"}}