{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:2D6AJAXYX6QUUFVLD5AISUW6FB","short_pith_number":"pith:2D6AJAXY","canonical_record":{"source":{"id":"1503.04246","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-13T23:16:50Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"20abfb802cf20a752f49ce01b20a2aebd8dc90da38d112f5bbd5f71efbd1c36b","abstract_canon_sha256":"d67e682ef98e27d1d49030475cf605c09fc2a41ad28bb9d46cb78da31c727540"},"schema_version":"1.0"},"canonical_sha256":"d0fc0482f8bfa14a16ab1f408952de2869fb05180fdf9d8f96b2e72ada68a137","source":{"kind":"arxiv","id":"1503.04246","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.04246","created_at":"2026-05-18T01:35:48Z"},{"alias_kind":"arxiv_version","alias_value":"1503.04246v2","created_at":"2026-05-18T01:35:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.04246","created_at":"2026-05-18T01:35:48Z"},{"alias_kind":"pith_short_12","alias_value":"2D6AJAXYX6QU","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"2D6AJAXYX6QUUFVL","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"2D6AJAXY","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:2D6AJAXYX6QUUFVLD5AISUW6FB","target":"record","payload":{"canonical_record":{"source":{"id":"1503.04246","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-13T23:16:50Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"20abfb802cf20a752f49ce01b20a2aebd8dc90da38d112f5bbd5f71efbd1c36b","abstract_canon_sha256":"d67e682ef98e27d1d49030475cf605c09fc2a41ad28bb9d46cb78da31c727540"},"schema_version":"1.0"},"canonical_sha256":"d0fc0482f8bfa14a16ab1f408952de2869fb05180fdf9d8f96b2e72ada68a137","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:48.927998Z","signature_b64":"a0CO6fKZIZcBdyuc6B3uVGGcARyI5nSf+LmxnESCe5JJtMpTA3jDUOyExUe86r+Df39AXUiMfEBrzqMQiEAXAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d0fc0482f8bfa14a16ab1f408952de2869fb05180fdf9d8f96b2e72ada68a137","last_reissued_at":"2026-05-18T01:35:48.927271Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:48.927271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.04246","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:35:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SSZ5FOehEhjfowD2sywzwLAa9X1sgD7hCTbBUuCE5hXMPjPN5wylBSS1B35oIpIIwg6j07IBo8sXivENEJ5eCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T18:10:41.276872Z"},"content_sha256":"bb93f9bf04f847aa710ddafb7a08f30df52ab2e7c6c27dc1503d4891cd12b1d2","schema_version":"1.0","event_id":"sha256:bb93f9bf04f847aa710ddafb7a08f30df52ab2e7c6c27dc1503d4891cd12b1d2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:2D6AJAXYX6QUUFVLD5AISUW6FB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Optically Unbiased Gamma-Ray Burst Host (TOUGH) Survey. VII. The Host Galaxy Luminosity Function: Probing the Relationship Between GRBs and Star Formation to Redshift $\\sim6$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. de Ugarte Postigo, A. J. Levan, B. Milvang-Jensen, D. A. Perley, D. J. Watson, G. Bj\\\"ornsson, J. Gorosabel, J. Hjorth, J. P. U. Fynbo, N. R. Tanvir, P. Jakobsson, P. M{\\o}ller, R. Chapman, S. Schulze, T. Kr\\\"uhler","submitted_at":"2015-03-13T23:16:50Z","abstract_excerpt":"Gamma-ray bursts (GRBs) offer a route to characterizing star-forming galaxies and quantifying high-$z$ star formation that is distinct from the approach of traditional galaxy surveys: GRB selection is independent of dust and probes even the faintest galaxies that can evade detection in flux-limited surveys. However, the exact relation between the GRB rate and the star formation rate (SFR) throughout all redshifts is controversial. The Optically Unbiased GRB Host (TOUGH) survey includes observations of all GRB hosts (69) in an optically unbiased sample of Swift GRBs and we utilize these to cons"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.04246","kind":"arxiv","version":2},"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":"2026-05-18T01:35:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tj12Ym2ACuTCwQec9vpGZRi9RUCHvXnes8Gawgt6VceY0ww1p7UfNlE1zIQldR/G1XsFw4pc7q/8UsV2Oh3NAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T18:10:41.277216Z"},"content_sha256":"ec99ff683caa663f7d26e9346016e5fb167d3b013d06a0747aff5a1b4e41161e","schema_version":"1.0","event_id":"sha256:ec99ff683caa663f7d26e9346016e5fb167d3b013d06a0747aff5a1b4e41161e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2D6AJAXYX6QUUFVLD5AISUW6FB/bundle.json","state_url":"https://pith.science/pith/2D6AJAXYX6QUUFVLD5AISUW6FB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2D6AJAXYX6QUUFVLD5AISUW6FB/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":"2026-06-02T18:10:41Z","links":{"resolver":"https://pith.science/pith/2D6AJAXYX6QUUFVLD5AISUW6FB","bundle":"https://pith.science/pith/2D6AJAXYX6QUUFVLD5AISUW6FB/bundle.json","state":"https://pith.science/pith/2D6AJAXYX6QUUFVLD5AISUW6FB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2D6AJAXYX6QUUFVLD5AISUW6FB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:2D6AJAXYX6QUUFVLD5AISUW6FB","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":"d67e682ef98e27d1d49030475cf605c09fc2a41ad28bb9d46cb78da31c727540","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-13T23:16:50Z","title_canon_sha256":"20abfb802cf20a752f49ce01b20a2aebd8dc90da38d112f5bbd5f71efbd1c36b"},"schema_version":"1.0","source":{"id":"1503.04246","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.04246","created_at":"2026-05-18T01:35:48Z"},{"alias_kind":"arxiv_version","alias_value":"1503.04246v2","created_at":"2026-05-18T01:35:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.04246","created_at":"2026-05-18T01:35:48Z"},{"alias_kind":"pith_short_12","alias_value":"2D6AJAXYX6QU","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"2D6AJAXYX6QUUFVL","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"2D6AJAXY","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:ec99ff683caa663f7d26e9346016e5fb167d3b013d06a0747aff5a1b4e41161e","target":"graph","created_at":"2026-05-18T01:35:48Z","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"},"paper":{"abstract_excerpt":"Gamma-ray bursts (GRBs) offer a route to characterizing star-forming galaxies and quantifying high-$z$ star formation that is distinct from the approach of traditional galaxy surveys: GRB selection is independent of dust and probes even the faintest galaxies that can evade detection in flux-limited surveys. However, the exact relation between the GRB rate and the star formation rate (SFR) throughout all redshifts is controversial. The Optically Unbiased GRB Host (TOUGH) survey includes observations of all GRB hosts (69) in an optically unbiased sample of Swift GRBs and we utilize these to cons","authors_text":"A. de Ugarte Postigo, A. J. Levan, B. Milvang-Jensen, D. A. Perley, D. J. Watson, G. Bj\\\"ornsson, J. Gorosabel, J. Hjorth, J. P. U. Fynbo, N. R. Tanvir, P. Jakobsson, P. M{\\o}ller, R. Chapman, S. Schulze, T. Kr\\\"uhler","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-13T23:16:50Z","title":"The Optically Unbiased Gamma-Ray Burst Host (TOUGH) Survey. VII. The Host Galaxy Luminosity Function: Probing the Relationship Between GRBs and Star Formation to Redshift $\\sim6$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.04246","kind":"arxiv","version":2},"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:bb93f9bf04f847aa710ddafb7a08f30df52ab2e7c6c27dc1503d4891cd12b1d2","target":"record","created_at":"2026-05-18T01:35:48Z","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":"d67e682ef98e27d1d49030475cf605c09fc2a41ad28bb9d46cb78da31c727540","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-03-13T23:16:50Z","title_canon_sha256":"20abfb802cf20a752f49ce01b20a2aebd8dc90da38d112f5bbd5f71efbd1c36b"},"schema_version":"1.0","source":{"id":"1503.04246","kind":"arxiv","version":2}},"canonical_sha256":"d0fc0482f8bfa14a16ab1f408952de2869fb05180fdf9d8f96b2e72ada68a137","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d0fc0482f8bfa14a16ab1f408952de2869fb05180fdf9d8f96b2e72ada68a137","first_computed_at":"2026-05-18T01:35:48.927271Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:48.927271Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"a0CO6fKZIZcBdyuc6B3uVGGcARyI5nSf+LmxnESCe5JJtMpTA3jDUOyExUe86r+Df39AXUiMfEBrzqMQiEAXAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:48.927998Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.04246","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bb93f9bf04f847aa710ddafb7a08f30df52ab2e7c6c27dc1503d4891cd12b1d2","sha256:ec99ff683caa663f7d26e9346016e5fb167d3b013d06a0747aff5a1b4e41161e"],"state_sha256":"b4a81fe164137a51927a225f64f757c3da5da9e315d3bb5aea624cf6441c3f8a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YxYx+GRzS9F1g6qAHexuesOuoj6Xz22q19eNaMb8bbVnFQqnfV2hSjF68gonkVTCj+7lQHgrNBpZOJcCFiRVCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T18:10:41.279254Z","bundle_sha256":"1611d1a65d43cec9a8b737f211defa6f482e6dcee2f911fdb78bdcd74fa4534e"}}