{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:AAH36XV6EUPXHLIJND4FATKDR6","short_pith_number":"pith:AAH36XV6","canonical_record":{"source":{"id":"0909.3550","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-19T00:20:31Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"f5c97cee702e82e7de9b7e3d9eca0edf2eb7f3e3bc78c518abcd8ece1af96dbf","abstract_canon_sha256":"4d394d74328f657e63aa0cf943ea7fba57052268b271d0aabb662260394efcde"},"schema_version":"1.0"},"canonical_sha256":"000fbf5ebe251f73ad0968f8504d438fb21bd25477e2c402fd95405c5cfdb2fc","source":{"kind":"arxiv","id":"0909.3550","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.3550","created_at":"2026-05-18T02:34:29Z"},{"alias_kind":"arxiv_version","alias_value":"0909.3550v1","created_at":"2026-05-18T02:34:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.3550","created_at":"2026-05-18T02:34:29Z"},{"alias_kind":"pith_short_12","alias_value":"AAH36XV6EUPX","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"AAH36XV6EUPXHLIJ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"AAH36XV6","created_at":"2026-05-18T12:25:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:AAH36XV6EUPXHLIJND4FATKDR6","target":"record","payload":{"canonical_record":{"source":{"id":"0909.3550","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-19T00:20:31Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"f5c97cee702e82e7de9b7e3d9eca0edf2eb7f3e3bc78c518abcd8ece1af96dbf","abstract_canon_sha256":"4d394d74328f657e63aa0cf943ea7fba57052268b271d0aabb662260394efcde"},"schema_version":"1.0"},"canonical_sha256":"000fbf5ebe251f73ad0968f8504d438fb21bd25477e2c402fd95405c5cfdb2fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:29.491277Z","signature_b64":"BP/1mt0VyI0cWKnvS3uqMEL77JE+ZSfzF+a/4LZF68JvGr14kovCdhGSgJynAmLiC4IV1k4WYN7aBf2iLBxZDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"000fbf5ebe251f73ad0968f8504d438fb21bd25477e2c402fd95405c5cfdb2fc","last_reissued_at":"2026-05-18T02:34:29.490652Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:29.490652Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.3550","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":"2026-05-18T02:34:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"b6Eq+wcaqL9rTRTlm15tb+Z9l+JB0lwJjNieIB+WMjCDc+9Fl4Raq0/tLASGOfwxewOV9s83+WLiwe8Se+jOAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:34:21.461711Z"},"content_sha256":"a164db1e43ec3c4fc2c01b3c8eb1f77dc3bf0e06074f87d9c03b0bb3406dc817","schema_version":"1.0","event_id":"sha256:a164db1e43ec3c4fc2c01b3c8eb1f77dc3bf0e06074f87d9c03b0bb3406dc817"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:AAH36XV6EUPXHLIJND4FATKDR6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The IRAC Dark Field; Far- Infrared to X-ray Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.CO","authors_text":"D.T. Frayer, D. Thompson, E. Egami, J.A. Surace, J.E. Krick, J. Hora, L. Yan, M. Lacy, M. L. N. Ashby, V. Gorjian","submitted_at":"2009-09-19T00:20:31Z","abstract_excerpt":"We present 20 band photometry from the far-IR to X-ray in the Spitzer IRAC dark field. The bias for the near-IR camera on Spitzer is calibrated by observing a ~20 arcminute diameter \"dark\" field near the north ecliptic pole roughly every two-to-three weeks throughout the mission duration of Spitzer. The field is unique for its extreme depth, low background, high quality imaging, time-series information, and accompanying photometry including data taken with Akari, Palomar, MMT, KPNO, Hubble, and Chandra. This serendipitous survey contains the deepest mid-IR data taken to date. This dataset is w"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.3550","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":"2026-05-18T02:34:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RCSCsKUBUqLBwb4N1Kn2qg40+e/Q4Qq1XGBftsylvtxDLjBrGn2ilWo/3aRmiPSGPwttIZtpgXmbYgndpdCZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:34:21.462064Z"},"content_sha256":"f1082c3b1acd7bd1a643d75775053453fdfd800e8b6799f2e85b44442378f4bf","schema_version":"1.0","event_id":"sha256:f1082c3b1acd7bd1a643d75775053453fdfd800e8b6799f2e85b44442378f4bf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AAH36XV6EUPXHLIJND4FATKDR6/bundle.json","state_url":"https://pith.science/pith/AAH36XV6EUPXHLIJND4FATKDR6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AAH36XV6EUPXHLIJND4FATKDR6/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":"2026-06-02T04:34:21Z","links":{"resolver":"https://pith.science/pith/AAH36XV6EUPXHLIJND4FATKDR6","bundle":"https://pith.science/pith/AAH36XV6EUPXHLIJND4FATKDR6/bundle.json","state":"https://pith.science/pith/AAH36XV6EUPXHLIJND4FATKDR6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AAH36XV6EUPXHLIJND4FATKDR6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:AAH36XV6EUPXHLIJND4FATKDR6","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":"4d394d74328f657e63aa0cf943ea7fba57052268b271d0aabb662260394efcde","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-19T00:20:31Z","title_canon_sha256":"f5c97cee702e82e7de9b7e3d9eca0edf2eb7f3e3bc78c518abcd8ece1af96dbf"},"schema_version":"1.0","source":{"id":"0909.3550","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.3550","created_at":"2026-05-18T02:34:29Z"},{"alias_kind":"arxiv_version","alias_value":"0909.3550v1","created_at":"2026-05-18T02:34:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.3550","created_at":"2026-05-18T02:34:29Z"},{"alias_kind":"pith_short_12","alias_value":"AAH36XV6EUPX","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"AAH36XV6EUPXHLIJ","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"AAH36XV6","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:f1082c3b1acd7bd1a643d75775053453fdfd800e8b6799f2e85b44442378f4bf","target":"graph","created_at":"2026-05-18T02:34:29Z","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":"We present 20 band photometry from the far-IR to X-ray in the Spitzer IRAC dark field. The bias for the near-IR camera on Spitzer is calibrated by observing a ~20 arcminute diameter \"dark\" field near the north ecliptic pole roughly every two-to-three weeks throughout the mission duration of Spitzer. The field is unique for its extreme depth, low background, high quality imaging, time-series information, and accompanying photometry including data taken with Akari, Palomar, MMT, KPNO, Hubble, and Chandra. This serendipitous survey contains the deepest mid-IR data taken to date. This dataset is w","authors_text":"D.T. Frayer, D. Thompson, E. Egami, J.A. Surace, J.E. Krick, J. Hora, L. Yan, M. Lacy, M. L. N. Ashby, V. Gorjian","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-19T00:20:31Z","title":"The IRAC Dark Field; Far- Infrared to X-ray Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.3550","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:a164db1e43ec3c4fc2c01b3c8eb1f77dc3bf0e06074f87d9c03b0bb3406dc817","target":"record","created_at":"2026-05-18T02:34:29Z","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":"4d394d74328f657e63aa0cf943ea7fba57052268b271d0aabb662260394efcde","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-19T00:20:31Z","title_canon_sha256":"f5c97cee702e82e7de9b7e3d9eca0edf2eb7f3e3bc78c518abcd8ece1af96dbf"},"schema_version":"1.0","source":{"id":"0909.3550","kind":"arxiv","version":1}},"canonical_sha256":"000fbf5ebe251f73ad0968f8504d438fb21bd25477e2c402fd95405c5cfdb2fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"000fbf5ebe251f73ad0968f8504d438fb21bd25477e2c402fd95405c5cfdb2fc","first_computed_at":"2026-05-18T02:34:29.490652Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:29.490652Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BP/1mt0VyI0cWKnvS3uqMEL77JE+ZSfzF+a/4LZF68JvGr14kovCdhGSgJynAmLiC4IV1k4WYN7aBf2iLBxZDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:29.491277Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.3550","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a164db1e43ec3c4fc2c01b3c8eb1f77dc3bf0e06074f87d9c03b0bb3406dc817","sha256:f1082c3b1acd7bd1a643d75775053453fdfd800e8b6799f2e85b44442378f4bf"],"state_sha256":"8a5fc639731fa97fb87ec2e3ec740debce5114e29fc6c48adab5f33f8438ee24"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tYriWld9WlMnwRhqI78TySw/gHHdSRNpPH2VmTPmDx+z+5dnthsjZSJUkXJDcCGUFgP/AhHJ+iAduWxvlRYADQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T04:34:21.464512Z","bundle_sha256":"1d98eae979f311a00389b82769295167534653b0a287d92a6f5b46d9c3c29114"}}