{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:67H76HJKOXP33K2CZGEE6MCPPU","short_pith_number":"pith:67H76HJK","canonical_record":{"source":{"id":"astro-ph/9611051","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-11-06T22:16:57Z","cross_cats_sorted":[],"title_canon_sha256":"644b2a1d0c66a37822092e617338e6fb1208460ed2ad279a190f2ccc283c75f4","abstract_canon_sha256":"0e3ac690d4485baef87f02707764561533738399b6f056234ab7b3a019691b60"},"schema_version":"1.0"},"canonical_sha256":"f7cfff1d2a75dfbdab42c9884f304f7d05e5b5219c65bfd73244e1cbd661d865","source":{"kind":"arxiv","id":"astro-ph/9611051","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9611051","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9611051v1","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9611051","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"pith_short_12","alias_value":"67H76HJKOXP3","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"pith_short_16","alias_value":"67H76HJKOXP33K2C","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"pith_short_8","alias_value":"67H76HJK","created_at":"2026-07-04T14:14:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:67H76HJKOXP33K2CZGEE6MCPPU","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9611051","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-11-06T22:16:57Z","cross_cats_sorted":[],"title_canon_sha256":"644b2a1d0c66a37822092e617338e6fb1208460ed2ad279a190f2ccc283c75f4","abstract_canon_sha256":"0e3ac690d4485baef87f02707764561533738399b6f056234ab7b3a019691b60"},"schema_version":"1.0"},"canonical_sha256":"f7cfff1d2a75dfbdab42c9884f304f7d05e5b5219c65bfd73244e1cbd661d865","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:14:57.728800Z","signature_b64":"U79YzgaQJXj04A4hdBYgMZyFgXrr+4HLeBrcvavGRi6Djq1kHp23ClK8I3REG9MQs75zIxIG7fFVu7lB9c/gCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7cfff1d2a75dfbdab42c9884f304f7d05e5b5219c65bfd73244e1cbd661d865","last_reissued_at":"2026-07-04T14:14:57.728325Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:14:57.728325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9611051","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":"2026-07-04T14:14:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VTwtD0Un+UkAw2X44TqBSfNy/KqacX3wD1P1axliM4E85sQywxbuzt8+bc/TaCf5j6nQp6nDdUT6rKLfxWrkBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:39:26.834146Z"},"content_sha256":"d83e9f603d6748bb37185264a97f3622de5da2ec6d018aba5fb144822ae78e09","schema_version":"1.0","event_id":"sha256:d83e9f603d6748bb37185264a97f3622de5da2ec6d018aba5fb144822ae78e09"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:67H76HJKOXP33K2CZGEE6MCPPU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Quadruple Gravitational Lens PG1115+080: Time Delays and Models","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Dressler, A. O. Jaunsen, C. D. Bailyn, C. M. Becker, D. Harmer, D. Mehlert, D. O. Richstone, D. W. Willmarth, E. E. Falco, G. M. Bernstein, G. Wegner, G. Worthey, J. Hjorth, J. L. Tonry, J. N. Hewitt, J. P. Blakeslee, J. R. Thorstensen, K. Gebhardt, L. S. Sparke, M. Mateo, P. Fischer, P. L. Schechter, R. A. Fesen, R. Barr, R. Barvainis, S. J. Bus, T. Hurt","submitted_at":"1996-11-06T22:16:57Z","abstract_excerpt":"Optical photometry is presented for the quadruple gravitational lens PG1115+080. A preliminary reduction of data taken from November 1995 to June 1996 gives component ``C'' leading component ``B'' by 23.7+/-3.4 days and components ``A1'' and ``A2'' by 9.4 days. A range of models has been fit to the image positions, none of which gives an adequate fit. The best fitting and most physically plausible of these, taking the lensing galaxy and the associated group of galaxies to be singular isothermal spheres, gives a Hubble constant of 42 km/s/Mpc for Omega=1, with an observational uncertainty of 14"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9611051","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/astro-ph/9611051/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":"2026-07-04T14:14:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FaUY+FBj828P/AM3raanrB8E/2732AJSzmAq1pdCojWNbmBtRrjArSCJD/PLIlMCpNo+kZ9+jlnntD3jIrc8Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:39:26.834538Z"},"content_sha256":"c937bfa7245188e727a8d1f0957f736ca8b90bfbd657d2d04213e242f448a774","schema_version":"1.0","event_id":"sha256:c937bfa7245188e727a8d1f0957f736ca8b90bfbd657d2d04213e242f448a774"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/67H76HJKOXP33K2CZGEE6MCPPU/bundle.json","state_url":"https://pith.science/pith/67H76HJKOXP33K2CZGEE6MCPPU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/67H76HJKOXP33K2CZGEE6MCPPU/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":"2026-08-03T21:39:26Z","links":{"resolver":"https://pith.science/pith/67H76HJKOXP33K2CZGEE6MCPPU","bundle":"https://pith.science/pith/67H76HJKOXP33K2CZGEE6MCPPU/bundle.json","state":"https://pith.science/pith/67H76HJKOXP33K2CZGEE6MCPPU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/67H76HJKOXP33K2CZGEE6MCPPU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:67H76HJKOXP33K2CZGEE6MCPPU","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":"0e3ac690d4485baef87f02707764561533738399b6f056234ab7b3a019691b60","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-11-06T22:16:57Z","title_canon_sha256":"644b2a1d0c66a37822092e617338e6fb1208460ed2ad279a190f2ccc283c75f4"},"schema_version":"1.0","source":{"id":"astro-ph/9611051","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9611051","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9611051v1","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9611051","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"pith_short_12","alias_value":"67H76HJKOXP3","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"pith_short_16","alias_value":"67H76HJKOXP33K2C","created_at":"2026-07-04T14:14:57Z"},{"alias_kind":"pith_short_8","alias_value":"67H76HJK","created_at":"2026-07-04T14:14:57Z"}],"graph_snapshots":[{"event_id":"sha256:c937bfa7245188e727a8d1f0957f736ca8b90bfbd657d2d04213e242f448a774","target":"graph","created_at":"2026-07-04T14:14:57Z","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/9611051/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Optical photometry is presented for the quadruple gravitational lens PG1115+080. A preliminary reduction of data taken from November 1995 to June 1996 gives component ``C'' leading component ``B'' by 23.7+/-3.4 days and components ``A1'' and ``A2'' by 9.4 days. A range of models has been fit to the image positions, none of which gives an adequate fit. The best fitting and most physically plausible of these, taking the lensing galaxy and the associated group of galaxies to be singular isothermal spheres, gives a Hubble constant of 42 km/s/Mpc for Omega=1, with an observational uncertainty of 14","authors_text":"A. Dressler, A. O. Jaunsen, C. D. Bailyn, C. M. Becker, D. Harmer, D. Mehlert, D. O. Richstone, D. W. Willmarth, E. E. Falco, G. M. Bernstein, G. Wegner, G. Worthey, J. Hjorth, J. L. Tonry, J. N. Hewitt, J. P. Blakeslee, J. R. Thorstensen, K. Gebhardt, L. S. Sparke, M. Mateo, P. Fischer, P. L. Schechter, R. A. Fesen, R. Barr, R. Barvainis, S. J. Bus, T. Hurt","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1996-11-06T22:16:57Z","title":"The Quadruple Gravitational Lens PG1115+080: Time Delays and Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9611051","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:d83e9f603d6748bb37185264a97f3622de5da2ec6d018aba5fb144822ae78e09","target":"record","created_at":"2026-07-04T14:14:57Z","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":"0e3ac690d4485baef87f02707764561533738399b6f056234ab7b3a019691b60","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-11-06T22:16:57Z","title_canon_sha256":"644b2a1d0c66a37822092e617338e6fb1208460ed2ad279a190f2ccc283c75f4"},"schema_version":"1.0","source":{"id":"astro-ph/9611051","kind":"arxiv","version":1}},"canonical_sha256":"f7cfff1d2a75dfbdab42c9884f304f7d05e5b5219c65bfd73244e1cbd661d865","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f7cfff1d2a75dfbdab42c9884f304f7d05e5b5219c65bfd73244e1cbd661d865","first_computed_at":"2026-07-04T14:14:57.728325Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T14:14:57.728325Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"U79YzgaQJXj04A4hdBYgMZyFgXrr+4HLeBrcvavGRi6Djq1kHp23ClK8I3REG9MQs75zIxIG7fFVu7lB9c/gCA==","signature_status":"signed_v1","signed_at":"2026-07-04T14:14:57.728800Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9611051","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d83e9f603d6748bb37185264a97f3622de5da2ec6d018aba5fb144822ae78e09","sha256:c937bfa7245188e727a8d1f0957f736ca8b90bfbd657d2d04213e242f448a774"],"state_sha256":"b8e38b98dc7dae20ed886a37d3cf756b0ff578149b91ad7fcc05cae4e3fa44de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4JD2+BCIi2WSieYXMrDk4AohexLf/H8dIKsdSECerLebEn+FIBtx1ziW+5KscqzfUqC2EhFDTjckiZo97hqxBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:39:26.837300Z","bundle_sha256":"20df19eeba688b6f044b335dfefb33c30a3ea91178e549d7c0fab429c4fbb29f"}}