{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:LYDXHNFYGYK4H3V56IF7PNM5ZW","short_pith_number":"pith:LYDXHNFY","canonical_record":{"source":{"id":"astro-ph/0004176","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-13T01:10:25Z","cross_cats_sorted":[],"title_canon_sha256":"0e41c1f2cf252c81660ab725bd13f297c8124d57306daf37e8162b2d3ca17ab5","abstract_canon_sha256":"8a72d9e832a33969e907cafd19ab11d856fcf4b947cb62ccd8d97357a7c6b853"},"schema_version":"1.0"},"canonical_sha256":"5e0773b4b83615c3eebdf20bf7b59dcdb4bffed3b2d268a161e50565583a909c","source":{"kind":"arxiv","id":"astro-ph/0004176","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004176","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004176v2","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004176","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"pith_short_12","alias_value":"LYDXHNFYGYK4","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"pith_short_16","alias_value":"LYDXHNFYGYK4H3V5","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"pith_short_8","alias_value":"LYDXHNFY","created_at":"2026-07-04T14:10:17Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:LYDXHNFYGYK4H3V56IF7PNM5ZW","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0004176","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-13T01:10:25Z","cross_cats_sorted":[],"title_canon_sha256":"0e41c1f2cf252c81660ab725bd13f297c8124d57306daf37e8162b2d3ca17ab5","abstract_canon_sha256":"8a72d9e832a33969e907cafd19ab11d856fcf4b947cb62ccd8d97357a7c6b853"},"schema_version":"1.0"},"canonical_sha256":"5e0773b4b83615c3eebdf20bf7b59dcdb4bffed3b2d268a161e50565583a909c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:10:17.401847Z","signature_b64":"owE+hllIHHZ8D77qlt7m8ahpE+imA2hV5OofPF63/B+ZbtSbTupj2YJpnQuF+uP3UPwtOVFYsh4/GkLfrnO2Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5e0773b4b83615c3eebdf20bf7b59dcdb4bffed3b2d268a161e50565583a909c","last_reissued_at":"2026-07-04T14:10:17.401399Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:10:17.401399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0004176","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":"2026-07-04T14:10:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bYq1DZHRYNbr7LMSzD7t1Bsys59sIxJ5tRRExLiNgz/3zDOIghMfuNG1bgPE7SncjMBYoOwCjucEraRha+9HBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T01:49:47.548632Z"},"content_sha256":"38bde8bbce2cda2fc4b9f5615815712f19625818138e5d23faee4760f7479796","schema_version":"1.0","event_id":"sha256:38bde8bbce2cda2fc4b9f5615815712f19625818138e5d23faee4760f7479796"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:LYDXHNFYGYK4H3V56IF7PNM5ZW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Redshifts For 220 BATSE Gamma-Ray Bursts Determined by Variability and the Cosmological Consequences","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Cambridge University), E. E. Fenimore (Los Alamos), E. Ramirez-Ruiz (Los Alamos","submitted_at":"2000-04-13T01:10:25Z","abstract_excerpt":"We show that the time variability of a gamma-ray burst (GRB) appears to be correlated with the absolute luminosity of the burst: smooth bursts are intrinsically less luminous. This Cepheid-like relationship can be used to determine the redshift of a GRB from parameters measured solely at gamma-ray energies. The relationship is based on only seven events at present and needs to be further confirmed with more events. We present the details of converting GRB observables to luminosities and redshifts for 220 bright, long GRBs from the Burst and Transient Source Experiment (BATSE) and explore the c"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004176","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/0004176/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T14:10:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"anDxtQ/UnRUuNlBAY4XT4/eBpJKfETxmyCjafE8qTInf6kWQTvf6yGKyEj7eOtdF1hYAunLplXWy7vyIbHJHBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T01:49:47.549361Z"},"content_sha256":"ad9f2309db096f4bf710be86883013d9bb81863e06ee73932f889a5f508db23a","schema_version":"1.0","event_id":"sha256:ad9f2309db096f4bf710be86883013d9bb81863e06ee73932f889a5f508db23a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LYDXHNFYGYK4H3V56IF7PNM5ZW/bundle.json","state_url":"https://pith.science/pith/LYDXHNFYGYK4H3V56IF7PNM5ZW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LYDXHNFYGYK4H3V56IF7PNM5ZW/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":"2026-08-10T01:49:47Z","links":{"resolver":"https://pith.science/pith/LYDXHNFYGYK4H3V56IF7PNM5ZW","bundle":"https://pith.science/pith/LYDXHNFYGYK4H3V56IF7PNM5ZW/bundle.json","state":"https://pith.science/pith/LYDXHNFYGYK4H3V56IF7PNM5ZW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LYDXHNFYGYK4H3V56IF7PNM5ZW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:LYDXHNFYGYK4H3V56IF7PNM5ZW","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":"8a72d9e832a33969e907cafd19ab11d856fcf4b947cb62ccd8d97357a7c6b853","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-13T01:10:25Z","title_canon_sha256":"0e41c1f2cf252c81660ab725bd13f297c8124d57306daf37e8162b2d3ca17ab5"},"schema_version":"1.0","source":{"id":"astro-ph/0004176","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0004176","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0004176v2","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0004176","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"pith_short_12","alias_value":"LYDXHNFYGYK4","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"pith_short_16","alias_value":"LYDXHNFYGYK4H3V5","created_at":"2026-07-04T14:10:17Z"},{"alias_kind":"pith_short_8","alias_value":"LYDXHNFY","created_at":"2026-07-04T14:10:17Z"}],"graph_snapshots":[{"event_id":"sha256:ad9f2309db096f4bf710be86883013d9bb81863e06ee73932f889a5f508db23a","target":"graph","created_at":"2026-07-04T14:10:17Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/astro-ph/0004176/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We show that the time variability of a gamma-ray burst (GRB) appears to be correlated with the absolute luminosity of the burst: smooth bursts are intrinsically less luminous. This Cepheid-like relationship can be used to determine the redshift of a GRB from parameters measured solely at gamma-ray energies. The relationship is based on only seven events at present and needs to be further confirmed with more events. We present the details of converting GRB observables to luminosities and redshifts for 220 bright, long GRBs from the Burst and Transient Source Experiment (BATSE) and explore the c","authors_text":"Cambridge University), E. E. Fenimore (Los Alamos), E. Ramirez-Ruiz (Los Alamos","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2000-04-13T01:10:25Z","title":"Redshifts For 220 BATSE Gamma-Ray Bursts Determined by Variability and the Cosmological Consequences"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0004176","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":"sha256:38bde8bbce2cda2fc4b9f5615815712f19625818138e5d23faee4760f7479796","target":"record","created_at":"2026-07-04T14:10:17Z","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":"8a72d9e832a33969e907cafd19ab11d856fcf4b947cb62ccd8d97357a7c6b853","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2000-04-13T01:10:25Z","title_canon_sha256":"0e41c1f2cf252c81660ab725bd13f297c8124d57306daf37e8162b2d3ca17ab5"},"schema_version":"1.0","source":{"id":"astro-ph/0004176","kind":"arxiv","version":2}},"canonical_sha256":"5e0773b4b83615c3eebdf20bf7b59dcdb4bffed3b2d268a161e50565583a909c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e0773b4b83615c3eebdf20bf7b59dcdb4bffed3b2d268a161e50565583a909c","first_computed_at":"2026-07-04T14:10:17.401399Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:10:17.401399Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"owE+hllIHHZ8D77qlt7m8ahpE+imA2hV5OofPF63/B+ZbtSbTupj2YJpnQuF+uP3UPwtOVFYsh4/GkLfrnO2Dg==","signature_status":"signed_v1","signed_at":"2026-07-04T14:10:17.401847Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0004176","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38bde8bbce2cda2fc4b9f5615815712f19625818138e5d23faee4760f7479796","sha256:ad9f2309db096f4bf710be86883013d9bb81863e06ee73932f889a5f508db23a"],"state_sha256":"0e2fcbd5031c917839a13bc5de34d76966185c60f48f5fbc3f4393bbc4717a82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5agv5ymCxOdEwSFmhyzI8HXmHaLqNc2NGUc28iihuhaqDjadoxLNJ9hq5aL9IaGaBFMWQdCC6rEbR2Rby/iSAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T01:49:47.554923Z","bundle_sha256":"c386afa9e43300f9e3e6c32c3be71c795e0f2b32ff33aff6a4ff0ebfe209b638"}}