{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:N7YIOHMJ2KUIJEAYSJ4W6FMX2B","short_pith_number":"pith:N7YIOHMJ","canonical_record":{"source":{"id":"astro-ph/0103014","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-03-01T17:30:11Z","cross_cats_sorted":[],"title_canon_sha256":"99f3c00d45621c0b4a8002cefb2b06e0f1edeb856661bab5d2e813a24420b90c","abstract_canon_sha256":"af6b69b7054e1391829f9020f1b76e9a6ab51aa8916ac43b1c8568e0fb3059c5"},"schema_version":"1.0"},"canonical_sha256":"6ff0871d89d2a884901892796f1597d04687f9edb7fd235ab4ff2b36a7d599d3","source":{"kind":"arxiv","id":"astro-ph/0103014","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0103014","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0103014v3","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0103014","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"pith_short_12","alias_value":"N7YIOHMJ2KUI","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"pith_short_16","alias_value":"N7YIOHMJ2KUIJEAY","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"pith_short_8","alias_value":"N7YIOHMJ","created_at":"2026-07-04T16:22:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:N7YIOHMJ2KUIJEAYSJ4W6FMX2B","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0103014","kind":"arxiv","version":3},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-03-01T17:30:11Z","cross_cats_sorted":[],"title_canon_sha256":"99f3c00d45621c0b4a8002cefb2b06e0f1edeb856661bab5d2e813a24420b90c","abstract_canon_sha256":"af6b69b7054e1391829f9020f1b76e9a6ab51aa8916ac43b1c8568e0fb3059c5"},"schema_version":"1.0"},"canonical_sha256":"6ff0871d89d2a884901892796f1597d04687f9edb7fd235ab4ff2b36a7d599d3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:22:48.366959Z","signature_b64":"Z4F/0mPjh0pMpMJOx/K87zS22FcWr3xKaHTi5v91FCb9MJCn2/JCVq+jgpTESw+h0H+HHfnD9nHbGDzpKSsEAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6ff0871d89d2a884901892796f1597d04687f9edb7fd235ab4ff2b36a7d599d3","last_reissued_at":"2026-07-04T16:22:48.366535Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:22:48.366535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0103014","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-04T16:22:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w5HLFkzqyMOOMgq6oBcKRKTReA/Ze/RNcIpqwoScClzaYPEPApvFwdyeBPbKgJAV9nstwMsEtIkhJsH+18HoBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:06:47.203084Z"},"content_sha256":"cec7c267f55ffc276cffba615b0dc1b818eb6cc7dea40928f3149f78f4b7ad6d","schema_version":"1.0","event_id":"sha256:cec7c267f55ffc276cffba615b0dc1b818eb6cc7dea40928f3149f78f4b7ad6d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:N7YIOHMJ2KUIJEAYSJ4W6FMX2B","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New Results from the X-ray and Optical Survey of the Chandra Deep Field South: The 300ks Exposure","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Koekemoer (STScI), A. Zirm (JHU), C. Norman (JHU), E. Schreier (STScI), G. Hasinger, G.Szokoly (AIP), J. Bergeron (ESO), JHU), J.X. Wang (JHU), L. Kewley (JHU), M. Nonino (OAT), N. Grogin (STScI), P. Rosati (ESO), P.Tozzi (OAT), R. Giacconi (AUI, R. Gilli (JHU), R. Gilmozzi (ESO), S. Borgani (INFN), W. Zheng (JHU)","submitted_at":"2001-03-01T17:30:11Z","abstract_excerpt":"We present results from 300 ks of X-ray observations of the Chandra Deep Field South. The field of the four combined exposures is now 0.1035 deg^2 and we reach a flux limit of 10^{-16} erg s^{-1} cm^{-2} in the 0.5-2 keV soft band and 10^{-15} erg s^{-1} cm^{-2} in the 2-10 keV hard band, thus a factor 2 fainter than the previous 120 ks exposure. The total catalogue is composed of 197 sources including 22 sources detected only in the hard band, 51 only in the soft band, and 124 detected in both bands. We have now the optical spectra for 86 optical counterparts. We compute the total contributio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0103014","kind":"arxiv","version":3},"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/0103014/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":"2026-07-04T16:22:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PfJXTWan/LdxhMDRuHG3h3Y0EwkVmasobu0EL8RxIHvLnjXRoLFkrJO3MDAydnsA5eU41GG2isw2ZOYPhOvRDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T15:06:47.203590Z"},"content_sha256":"f517d7392f38b218f95d488e8cff6e0fe75bb7ab4800dea7623c6787af952c96","schema_version":"1.0","event_id":"sha256:f517d7392f38b218f95d488e8cff6e0fe75bb7ab4800dea7623c6787af952c96"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/N7YIOHMJ2KUIJEAYSJ4W6FMX2B/bundle.json","state_url":"https://pith.science/pith/N7YIOHMJ2KUIJEAYSJ4W6FMX2B/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/N7YIOHMJ2KUIJEAYSJ4W6FMX2B/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":"2026-08-06T15:06:47Z","links":{"resolver":"https://pith.science/pith/N7YIOHMJ2KUIJEAYSJ4W6FMX2B","bundle":"https://pith.science/pith/N7YIOHMJ2KUIJEAYSJ4W6FMX2B/bundle.json","state":"https://pith.science/pith/N7YIOHMJ2KUIJEAYSJ4W6FMX2B/state.json","well_known_bundle":"https://pith.science/.well-known/pith/N7YIOHMJ2KUIJEAYSJ4W6FMX2B/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:N7YIOHMJ2KUIJEAYSJ4W6FMX2B","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":"af6b69b7054e1391829f9020f1b76e9a6ab51aa8916ac43b1c8568e0fb3059c5","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-03-01T17:30:11Z","title_canon_sha256":"99f3c00d45621c0b4a8002cefb2b06e0f1edeb856661bab5d2e813a24420b90c"},"schema_version":"1.0","source":{"id":"astro-ph/0103014","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0103014","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0103014v3","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0103014","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"pith_short_12","alias_value":"N7YIOHMJ2KUI","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"pith_short_16","alias_value":"N7YIOHMJ2KUIJEAY","created_at":"2026-07-04T16:22:48Z"},{"alias_kind":"pith_short_8","alias_value":"N7YIOHMJ","created_at":"2026-07-04T16:22:48Z"}],"graph_snapshots":[{"event_id":"sha256:f517d7392f38b218f95d488e8cff6e0fe75bb7ab4800dea7623c6787af952c96","target":"graph","created_at":"2026-07-04T16:22:48Z","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/0103014/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present results from 300 ks of X-ray observations of the Chandra Deep Field South. The field of the four combined exposures is now 0.1035 deg^2 and we reach a flux limit of 10^{-16} erg s^{-1} cm^{-2} in the 0.5-2 keV soft band and 10^{-15} erg s^{-1} cm^{-2} in the 2-10 keV hard band, thus a factor 2 fainter than the previous 120 ks exposure. The total catalogue is composed of 197 sources including 22 sources detected only in the hard band, 51 only in the soft band, and 124 detected in both bands. We have now the optical spectra for 86 optical counterparts. We compute the total contributio","authors_text":"A. Koekemoer (STScI), A. Zirm (JHU), C. Norman (JHU), E. Schreier (STScI), G. Hasinger, G.Szokoly (AIP), J. Bergeron (ESO), JHU), J.X. Wang (JHU), L. Kewley (JHU), M. Nonino (OAT), N. Grogin (STScI), P. Rosati (ESO), P.Tozzi (OAT), R. Giacconi (AUI, R. Gilli (JHU), R. Gilmozzi (ESO), S. Borgani (INFN), W. Zheng (JHU)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-03-01T17:30:11Z","title":"New Results from the X-ray and Optical Survey of the Chandra Deep Field South: The 300ks Exposure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0103014","kind":"arxiv","version":3},"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:cec7c267f55ffc276cffba615b0dc1b818eb6cc7dea40928f3149f78f4b7ad6d","target":"record","created_at":"2026-07-04T16:22:48Z","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":"af6b69b7054e1391829f9020f1b76e9a6ab51aa8916ac43b1c8568e0fb3059c5","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-03-01T17:30:11Z","title_canon_sha256":"99f3c00d45621c0b4a8002cefb2b06e0f1edeb856661bab5d2e813a24420b90c"},"schema_version":"1.0","source":{"id":"astro-ph/0103014","kind":"arxiv","version":3}},"canonical_sha256":"6ff0871d89d2a884901892796f1597d04687f9edb7fd235ab4ff2b36a7d599d3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6ff0871d89d2a884901892796f1597d04687f9edb7fd235ab4ff2b36a7d599d3","first_computed_at":"2026-07-04T16:22:48.366535Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:22:48.366535Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z4F/0mPjh0pMpMJOx/K87zS22FcWr3xKaHTi5v91FCb9MJCn2/JCVq+jgpTESw+h0H+HHfnD9nHbGDzpKSsEAw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:22:48.366959Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0103014","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cec7c267f55ffc276cffba615b0dc1b818eb6cc7dea40928f3149f78f4b7ad6d","sha256:f517d7392f38b218f95d488e8cff6e0fe75bb7ab4800dea7623c6787af952c96"],"state_sha256":"77f171398e9e845c8f1777a50ab33cf8a0579082704f6347e7fecc578b65fdef"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a2SMeozoZQnV4r6OZktQnTZu/EAZpfyFxCrF0LW+vVLPzxiwKsPg1YtJQDY7DbRnzDiUgbX9xkpMmqdyp74GBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T15:06:47.208627Z","bundle_sha256":"5ca7e1e0508b2f15ef1c3e0c9c21414922806d78e538df8f0415af1dc5cef9d3"}}