{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2003:XFAFHFFHC6NNPJOREI2QY46WGI","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":"64385009acf2f45c89b1e83f6a60a238466a49e59fbd08e224301b5170946dcb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-17T09:57:41Z","title_canon_sha256":"1d47abea2a72f79c96559129996f81eb806db2be8213c98519e5aec3cc0847da"},"schema_version":"1.0","source":{"id":"astro-ph/0312444","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0312444","created_at":"2026-07-04T16:38:01Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0312444v1","created_at":"2026-07-04T16:38:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0312444","created_at":"2026-07-04T16:38:01Z"},{"alias_kind":"pith_short_12","alias_value":"XFAFHFFHC6NN","created_at":"2026-07-04T16:38:01Z"},{"alias_kind":"pith_short_16","alias_value":"XFAFHFFHC6NNPJOR","created_at":"2026-07-04T16:38:01Z"},{"alias_kind":"pith_short_8","alias_value":"XFAFHFFH","created_at":"2026-07-04T16:38:01Z"}],"graph_snapshots":[{"event_id":"sha256:4ac172deb4f61a3bee656d70198cfeaa03c8208e435cdcd5000e96c7ba714ed3","target":"graph","created_at":"2026-07-04T16:38:01Z","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/0312444/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper we describe the U-band imaging of the F02 deep field, one of the fields in the VIRMOS Deep Imaging Survey. The observations were done at the ESO/MPG 2.2m telescope at La Silla (Chile) using the 8k x 8k Wide-Field Imager (WFI). The field is centered at alpha(J2000)=02h 26m 00s and delta(J2000)=-04deg 30' 00\", the total covered area is 0.9 deg**2 and the limiting magnitude (50% completeness) is U(AB) ~ 25.4 mag. Reduction steps, including astrometry, photometry and catalogue extraction, are first discussed. The achieved astrometric accuracy (RMS) is ~ 0.2\" with reference to the I-b","authors_text":"A. Zanichelli, B. Garilli, C. Adami, E. Bertin, E. Zucca, G. Vettolani, G. Zamorani, H. J. McCracken, M. Arnaboldi, M. Massarotti, M. Radovich, O. Le Fevre, R. Scaramella, S. Bardelli, S. Foucaud, V. Ripepi, Y. Mellier","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2003-12-17T09:57:41Z","title":"The VIRMOS deep imaging survey: III. ESO/WFI deep U-band imaging of the 0226-04 deep field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0312444","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":"sha256:912e72ee5746fdab861ea5508cdfc0097f7447bc7c35673e789e96d22ed573c4","target":"record","created_at":"2026-07-04T16:38:01Z","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":"64385009acf2f45c89b1e83f6a60a238466a49e59fbd08e224301b5170946dcb","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2003-12-17T09:57:41Z","title_canon_sha256":"1d47abea2a72f79c96559129996f81eb806db2be8213c98519e5aec3cc0847da"},"schema_version":"1.0","source":{"id":"astro-ph/0312444","kind":"arxiv","version":1}},"canonical_sha256":"b9405394a7179ad7a5d122350c73d6321899c352131f5f5ec215c8e39e07178a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b9405394a7179ad7a5d122350c73d6321899c352131f5f5ec215c8e39e07178a","first_computed_at":"2026-07-04T16:38:01.180839Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:38:01.180839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"o8dPuJg723H7lWP1AD3Bh4kzHGFGr+5IqeZmIQP5aSF9VKHGcclWvWR0EwJAOtr381g9SM1V+nMSQrjhmL8eAw==","signature_status":"signed_v1","signed_at":"2026-07-04T16:38:01.181281Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0312444","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:912e72ee5746fdab861ea5508cdfc0097f7447bc7c35673e789e96d22ed573c4","sha256:4ac172deb4f61a3bee656d70198cfeaa03c8208e435cdcd5000e96c7ba714ed3"],"state_sha256":"5e69367e3555353f0f544c3116be006fac72a23a56a405030f13b00357842d01"}