{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:EHBB5D2RT6BQPGOCHJ6GFAVW4U","short_pith_number":"pith:EHBB5D2R","canonical_record":{"source":{"id":"1205.3490","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"f89e6a4a5c2760e30245bc5331c04b7e4014539002c834bbdc3a6bcb28b26a29","abstract_canon_sha256":"5f18b4de79d5f3c34db3dfe8ecbc3384cf809ff77fcb6cde22161d365ad52272"},"schema_version":"1.0"},"canonical_sha256":"21c21e8f519f830799c23a7c6282b6e50ade724bbcdc177da74c902ebeb7b136","source":{"kind":"arxiv","id":"1205.3490","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3490","created_at":"2026-05-18T03:54:38Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3490v1","created_at":"2026-05-18T03:54:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3490","created_at":"2026-05-18T03:54:38Z"},{"alias_kind":"pith_short_12","alias_value":"EHBB5D2RT6BQ","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"EHBB5D2RT6BQPGOC","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"EHBB5D2R","created_at":"2026-05-18T12:27:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:EHBB5D2RT6BQPGOCHJ6GFAVW4U","target":"record","payload":{"canonical_record":{"source":{"id":"1205.3490","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"f89e6a4a5c2760e30245bc5331c04b7e4014539002c834bbdc3a6bcb28b26a29","abstract_canon_sha256":"5f18b4de79d5f3c34db3dfe8ecbc3384cf809ff77fcb6cde22161d365ad52272"},"schema_version":"1.0"},"canonical_sha256":"21c21e8f519f830799c23a7c6282b6e50ade724bbcdc177da74c902ebeb7b136","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:54:38.856400Z","signature_b64":"TIm5EkCYuAG0JPG8O5UEq7kv25QE8OEBtO2BDbSKfk28d3I8yiCfa09MPRSfJMVxJ6H84vZ5c/z0ozQR3UlxCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"21c21e8f519f830799c23a7c6282b6e50ade724bbcdc177da74c902ebeb7b136","last_reissued_at":"2026-05-18T03:54:38.855620Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:54:38.855620Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.3490","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":"2026-05-18T03:54:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PT0aBf+UYPXvAt7muzzv+x9v+N6NnR5NuI1CfcnaOnxOqpKzXM7/EDSLN230BEf2V4Pbiwtc3CfrDgzXlcR+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T13:59:19.746882Z"},"content_sha256":"09cada31a315903708c75aea01ca35a9e095536f966625051e1da72c33456617","schema_version":"1.0","event_id":"sha256:09cada31a315903708c75aea01ca35a9e095536f966625051e1da72c33456617"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:EHBB5D2RT6BQPGOCHJ6GFAVW4U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The optically unbiased GRB host (TOUGH) survey. III. Redshift distribution","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"B. Milvang-Jensen, D. Malesani, G. Letawe, J. Hjorth, J. P. U. Fynbo, N. R. Tanvir, P. Jakobsson, P. M. Vreeswijk, R. Chapman, R. L. C. Starling","submitted_at":"2012-05-15T20:00:00Z","abstract_excerpt":"We present 10 new gamma-ray burst (GRB) redshifts and another five redshift limits based on host galaxy spectroscopy obtained as part of a large program conducted at the Very Large Telescope (VLT). The redshifts span the range 0.345 < z < 2.54. Three of our measurements revise incorrect values from the literature. The homogeneous host sample researched here consists of 69 hosts that originally had a redshift completeness of 55% (with 38 out of 69 hosts having redshifts considered secure). Our project, including VLT/X-shooter observations reported elsewhere, increases this fraction to 77% (53/6"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3490","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":"2026-05-18T03:54:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6pKMFQK0I8530Cc7iVr9TO8RWsrXaAaZ1IeThm8H9zIv4x+ha9AAsDUHdnE4kAoH7rG+JeEbt4UN1rhdM1r2Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T13:59:19.747225Z"},"content_sha256":"ddbac39d7d41943bb8db87ba4539b8dec95867086d71e6344b06232bfbb27a52","schema_version":"1.0","event_id":"sha256:ddbac39d7d41943bb8db87ba4539b8dec95867086d71e6344b06232bfbb27a52"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EHBB5D2RT6BQPGOCHJ6GFAVW4U/bundle.json","state_url":"https://pith.science/pith/EHBB5D2RT6BQPGOCHJ6GFAVW4U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EHBB5D2RT6BQPGOCHJ6GFAVW4U/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":"2026-06-04T13:59:19Z","links":{"resolver":"https://pith.science/pith/EHBB5D2RT6BQPGOCHJ6GFAVW4U","bundle":"https://pith.science/pith/EHBB5D2RT6BQPGOCHJ6GFAVW4U/bundle.json","state":"https://pith.science/pith/EHBB5D2RT6BQPGOCHJ6GFAVW4U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EHBB5D2RT6BQPGOCHJ6GFAVW4U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:EHBB5D2RT6BQPGOCHJ6GFAVW4U","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":"5f18b4de79d5f3c34db3dfe8ecbc3384cf809ff77fcb6cde22161d365ad52272","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T20:00:00Z","title_canon_sha256":"f89e6a4a5c2760e30245bc5331c04b7e4014539002c834bbdc3a6bcb28b26a29"},"schema_version":"1.0","source":{"id":"1205.3490","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3490","created_at":"2026-05-18T03:54:38Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3490v1","created_at":"2026-05-18T03:54:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3490","created_at":"2026-05-18T03:54:38Z"},{"alias_kind":"pith_short_12","alias_value":"EHBB5D2RT6BQ","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_16","alias_value":"EHBB5D2RT6BQPGOC","created_at":"2026-05-18T12:27:04Z"},{"alias_kind":"pith_short_8","alias_value":"EHBB5D2R","created_at":"2026-05-18T12:27:04Z"}],"graph_snapshots":[{"event_id":"sha256:ddbac39d7d41943bb8db87ba4539b8dec95867086d71e6344b06232bfbb27a52","target":"graph","created_at":"2026-05-18T03:54:38Z","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 10 new gamma-ray burst (GRB) redshifts and another five redshift limits based on host galaxy spectroscopy obtained as part of a large program conducted at the Very Large Telescope (VLT). The redshifts span the range 0.345 < z < 2.54. Three of our measurements revise incorrect values from the literature. The homogeneous host sample researched here consists of 69 hosts that originally had a redshift completeness of 55% (with 38 out of 69 hosts having redshifts considered secure). Our project, including VLT/X-shooter observations reported elsewhere, increases this fraction to 77% (53/6","authors_text":"B. Milvang-Jensen, D. Malesani, G. Letawe, J. Hjorth, J. P. U. Fynbo, N. R. Tanvir, P. Jakobsson, P. M. Vreeswijk, R. Chapman, R. L. C. Starling","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T20:00:00Z","title":"The optically unbiased GRB host (TOUGH) survey. III. Redshift distribution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3490","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":"sha256:09cada31a315903708c75aea01ca35a9e095536f966625051e1da72c33456617","target":"record","created_at":"2026-05-18T03:54:38Z","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":"5f18b4de79d5f3c34db3dfe8ecbc3384cf809ff77fcb6cde22161d365ad52272","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-05-15T20:00:00Z","title_canon_sha256":"f89e6a4a5c2760e30245bc5331c04b7e4014539002c834bbdc3a6bcb28b26a29"},"schema_version":"1.0","source":{"id":"1205.3490","kind":"arxiv","version":1}},"canonical_sha256":"21c21e8f519f830799c23a7c6282b6e50ade724bbcdc177da74c902ebeb7b136","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21c21e8f519f830799c23a7c6282b6e50ade724bbcdc177da74c902ebeb7b136","first_computed_at":"2026-05-18T03:54:38.855620Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:54:38.855620Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TIm5EkCYuAG0JPG8O5UEq7kv25QE8OEBtO2BDbSKfk28d3I8yiCfa09MPRSfJMVxJ6H84vZ5c/z0ozQR3UlxCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:54:38.856400Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.3490","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:09cada31a315903708c75aea01ca35a9e095536f966625051e1da72c33456617","sha256:ddbac39d7d41943bb8db87ba4539b8dec95867086d71e6344b06232bfbb27a52"],"state_sha256":"b69d3a6ae6eb0f87193e90ee2deb1471b12b6131e5875abf497b7bc3d7c5c7fd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y8TGAwqxvryfmK2p6uoaPOfJowl/CIe4pPmcgvI4X1yNN6zZ72ysFDSAx0Tszm7X0tX9SUnTQT3xyVy34yA9Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T13:59:19.749702Z","bundle_sha256":"721a69ea841f48b9fb444a75132b32dda03c0e75d5ba66f896bd9909e3cb15cb"}}