{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:UILW3642UNXMBEHLF72N5AG6SM","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":"f8ea8c8c919b4ab34f3e81e5deb6fa584b9dadde800156499b694f680bd1160a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-05-28T09:30:50Z","title_canon_sha256":"0cda86fdcca7772535e87c0a9401c2bd257271856e584953de9da5a5e02ce6ca"},"schema_version":"1.0","source":{"id":"astro-ph/0205480","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0205480","created_at":"2026-05-18T01:40:42Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0205480v1","created_at":"2026-05-18T01:40:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0205480","created_at":"2026-05-18T01:40:42Z"},{"alias_kind":"pith_short_12","alias_value":"UILW3642UNXM","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"UILW3642UNXMBEHL","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"UILW3642","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:d2cc6ad169ff2b673b382d5d5deaa4459541cd144e915a8c549d99bf783662d7","target":"graph","created_at":"2026-05-18T01:40:42Z","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":"Despite extensive observational efforts, the brightest sub--mm source in the Hubble Deep Field, HDF850.1, has failed to yield a convincing optical/infrared identification almost 4 years after its discovery. This failure is all the more notable given the availability of supporting multi-frequency data of unparalleled depth, and sub-arcsec positional accuracy for the sub-mm/mm source. Consequently, HDF850.1 has become a test case of the possibility that the most violently star-forming objects in the universe are too red and/or distant to be seen in the deepest optical images. Here we report the ","authors_text":"A. Lawrence, A.M.S. Richards, D.H. Hughes, G.P. Smith, I. Aretxaga, I. Smail, J.A. Peacock, J.S. Dunlop (University of Edinburgh), M. Dickinson, M. Kajisawa, O. Almaini, R.G. Mann, R.J. Ivison, R.J. Mclure, S. Serjeant, T.W.B. Muxlow, T. Yamada","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2002-05-28T09:30:50Z","title":"Discovery of the host galaxy of HDF850.1, the brightest sub-mm source in the Hubble Deep Field"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0205480","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":"sha256:566c3ecb9e992bacd355962436a47131a96086aef6e573c62a225d35edc8fcda","target":"record","created_at":"2026-05-18T01:40:42Z","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":"f8ea8c8c919b4ab34f3e81e5deb6fa584b9dadde800156499b694f680bd1160a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2002-05-28T09:30:50Z","title_canon_sha256":"0cda86fdcca7772535e87c0a9401c2bd257271856e584953de9da5a5e02ce6ca"},"schema_version":"1.0","source":{"id":"astro-ph/0205480","kind":"arxiv","version":1}},"canonical_sha256":"a2176dfb9aa36ec090eb2ff4de80de931e4418eb405a8829b795f55458a61f56","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a2176dfb9aa36ec090eb2ff4de80de931e4418eb405a8829b795f55458a61f56","first_computed_at":"2026-05-18T01:40:42.737525Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:42.737525Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5clTZuF5uONVAWGBLJioHCskAZnqC9spi2zhW7ykPDCbMeZqtMOrf2d9t7dh3zLC2T9O071ggVNvKU5MBRX7Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:42.738160Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0205480","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:566c3ecb9e992bacd355962436a47131a96086aef6e573c62a225d35edc8fcda","sha256:d2cc6ad169ff2b673b382d5d5deaa4459541cd144e915a8c549d99bf783662d7"],"state_sha256":"73b8acb13cb20c2d7090fa4d79ad684c90f1fc0d957ba1bc1c1da5bb7a696c6d"}