{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1998:BLIIX6EKMOEA3K7UGBFY3KGPV6","short_pith_number":"pith:BLIIX6EK","canonical_record":{"source":{"id":"astro-ph/9803207","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-03-17T21:36:21Z","cross_cats_sorted":[],"title_canon_sha256":"3c9aff40549579d1ba6ead2a53c8de1c1badba09f65aefd3cea2d0bccb5e0069","abstract_canon_sha256":"1f31f3e12ed131a1515ae33b76470261330e93c08dd760561d6a1773212f1835"},"schema_version":"1.0"},"canonical_sha256":"0ad08bf88a63880dabf4304b8da8cfaf9031af5f858a5746f38fa327c3e0ed0e","source":{"kind":"arxiv","id":"astro-ph/9803207","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9803207","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9803207v1","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9803207","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"pith_short_12","alias_value":"BLIIX6EKMOEA","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"pith_short_16","alias_value":"BLIIX6EKMOEA3K7U","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"pith_short_8","alias_value":"BLIIX6EK","created_at":"2026-07-04T16:06:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1998:BLIIX6EKMOEA3K7UGBFY3KGPV6","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9803207","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1998-03-17T21:36:21Z","cross_cats_sorted":[],"title_canon_sha256":"3c9aff40549579d1ba6ead2a53c8de1c1badba09f65aefd3cea2d0bccb5e0069","abstract_canon_sha256":"1f31f3e12ed131a1515ae33b76470261330e93c08dd760561d6a1773212f1835"},"schema_version":"1.0"},"canonical_sha256":"0ad08bf88a63880dabf4304b8da8cfaf9031af5f858a5746f38fa327c3e0ed0e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:06:14.819449Z","signature_b64":"SNPIO8wA9bCOHjZLnkB2swx9OtAInBu278t/y7h+ysEE4k5kZaufXm0l0l5eyt5BfWLsI4TrEWp+1aD0AA6eDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0ad08bf88a63880dabf4304b8da8cfaf9031af5f858a5746f38fa327c3e0ed0e","last_reissued_at":"2026-07-04T16:06:14.819002Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:06:14.819002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9803207","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":"2026-07-04T16:06:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jcnL5VdP/PH2o1qs848C5FT0ROg0CHrM/z/UXGO64JLgMaIg97Th8zs0GNmWlM4PD5NTVGwrAfGQ8p+DDzd6Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T20:21:55.070661Z"},"content_sha256":"81dab5743a5d8eaa437589bd2b5d291e69f0a097be8622d24987e10cc94c92f9","schema_version":"1.0","event_id":"sha256:81dab5743a5d8eaa437589bd2b5d291e69f0a097be8622d24987e10cc94c92f9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1998:BLIIX6EKMOEA3K7UGBFY3KGPV6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Infrared Einstein Ring in the Gravitational Lens PG 1115+080","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"B. McLeod, C. Impey, C. Keeton, C. Kochanek, C. Peng, E. Falco, H.-W. Rix, J. Lehar","submitted_at":"1998-03-17T21:36:21Z","abstract_excerpt":"Hubble Space Telescope observations of the gravitational lens PG 1115+080 in the infrared show the known z =0.310 lens galaxy and reveal the z = 1.722 quasar host galaxy. The main lens galaxy G is a nearly circular (ellipticity < 0.07) elliptical galaxy with a de Vaucouleurs profile and an effective radius of R_e = 0.59 +/- 0.06 arcsec (1.7 +/- 0.2 h^{-1} kpc for Omega = 1 and h = H_0/100 km/s/Mpc). G is part of a group of galaxies that is a required component of all successful lens models. The new quasar and lens positions (3 milliarcsecond errors) yield constraints for these models that are "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9803207","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/9803207/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":"2026-07-04T16:06:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+ZHACYoJqzxC9StBWBXzJmiA7eXGDPK7L+i0ujS4XxhHKFrcoGugY30ws4O7IEgUeW2iwSM34jOeFiD5FPr1AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T20:21:55.071161Z"},"content_sha256":"3a29ffc8ad193fd161ddfac558fedc1e2d5004a07076ebd99444742f2fbe34ec","schema_version":"1.0","event_id":"sha256:3a29ffc8ad193fd161ddfac558fedc1e2d5004a07076ebd99444742f2fbe34ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BLIIX6EKMOEA3K7UGBFY3KGPV6/bundle.json","state_url":"https://pith.science/pith/BLIIX6EKMOEA3K7UGBFY3KGPV6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BLIIX6EKMOEA3K7UGBFY3KGPV6/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":"2026-08-21T20:21:55Z","links":{"resolver":"https://pith.science/pith/BLIIX6EKMOEA3K7UGBFY3KGPV6","bundle":"https://pith.science/pith/BLIIX6EKMOEA3K7UGBFY3KGPV6/bundle.json","state":"https://pith.science/pith/BLIIX6EKMOEA3K7UGBFY3KGPV6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BLIIX6EKMOEA3K7UGBFY3KGPV6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1998:BLIIX6EKMOEA3K7UGBFY3KGPV6","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":"1f31f3e12ed131a1515ae33b76470261330e93c08dd760561d6a1773212f1835","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-03-17T21:36:21Z","title_canon_sha256":"3c9aff40549579d1ba6ead2a53c8de1c1badba09f65aefd3cea2d0bccb5e0069"},"schema_version":"1.0","source":{"id":"astro-ph/9803207","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9803207","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9803207v1","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9803207","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"pith_short_12","alias_value":"BLIIX6EKMOEA","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"pith_short_16","alias_value":"BLIIX6EKMOEA3K7U","created_at":"2026-07-04T16:06:14Z"},{"alias_kind":"pith_short_8","alias_value":"BLIIX6EK","created_at":"2026-07-04T16:06:14Z"}],"graph_snapshots":[{"event_id":"sha256:3a29ffc8ad193fd161ddfac558fedc1e2d5004a07076ebd99444742f2fbe34ec","target":"graph","created_at":"2026-07-04T16:06:14Z","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/9803207/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Hubble Space Telescope observations of the gravitational lens PG 1115+080 in the infrared show the known z =0.310 lens galaxy and reveal the z = 1.722 quasar host galaxy. The main lens galaxy G is a nearly circular (ellipticity < 0.07) elliptical galaxy with a de Vaucouleurs profile and an effective radius of R_e = 0.59 +/- 0.06 arcsec (1.7 +/- 0.2 h^{-1} kpc for Omega = 1 and h = H_0/100 km/s/Mpc). G is part of a group of galaxies that is a required component of all successful lens models. The new quasar and lens positions (3 milliarcsecond errors) yield constraints for these models that are ","authors_text":"B. McLeod, C. Impey, C. Keeton, C. Kochanek, C. Peng, E. Falco, H.-W. Rix, J. Lehar","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1998-03-17T21:36:21Z","title":"An Infrared Einstein Ring in the Gravitational Lens PG 1115+080"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9803207","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":"sha256:81dab5743a5d8eaa437589bd2b5d291e69f0a097be8622d24987e10cc94c92f9","target":"record","created_at":"2026-07-04T16:06:14Z","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":"1f31f3e12ed131a1515ae33b76470261330e93c08dd760561d6a1773212f1835","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1998-03-17T21:36:21Z","title_canon_sha256":"3c9aff40549579d1ba6ead2a53c8de1c1badba09f65aefd3cea2d0bccb5e0069"},"schema_version":"1.0","source":{"id":"astro-ph/9803207","kind":"arxiv","version":1}},"canonical_sha256":"0ad08bf88a63880dabf4304b8da8cfaf9031af5f858a5746f38fa327c3e0ed0e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ad08bf88a63880dabf4304b8da8cfaf9031af5f858a5746f38fa327c3e0ed0e","first_computed_at":"2026-07-04T16:06:14.819002Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:06:14.819002Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SNPIO8wA9bCOHjZLnkB2swx9OtAInBu278t/y7h+ysEE4k5kZaufXm0l0l5eyt5BfWLsI4TrEWp+1aD0AA6eDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T16:06:14.819449Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9803207","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81dab5743a5d8eaa437589bd2b5d291e69f0a097be8622d24987e10cc94c92f9","sha256:3a29ffc8ad193fd161ddfac558fedc1e2d5004a07076ebd99444742f2fbe34ec"],"state_sha256":"29dc696140244639f73f6fd4e14660f56868827fdddab9091d073a68f92ac0f2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NqVktQhGKOy4nka/jxDL07pewtmDqbXwcd6586ZHLbhMWGxRRGUQaHgAIv5MOFNtNtKbl1ckul1jbxDZ92zdCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T20:21:55.076062Z","bundle_sha256":"7b0e96fac3a969f042873afe3ad9bc16a1a18ef17b8ec8b988ce2398e0580e8e"}}