{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:OL4654XDP6EQSKWLA5PIZVC3WU","short_pith_number":"pith:OL4654XD","canonical_record":{"source":{"id":"1206.1205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-06-06T12:48:29Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"a8a3408b2d4208027dcdc10ff9a380a8030be12b28e8b3e298977fde0d6be737","abstract_canon_sha256":"b4b8e2e8d06f5e309be5c798c5fa9279dd2c579b6c543fdc4ffe23bad94130b3"},"schema_version":"1.0"},"canonical_sha256":"72f9eef2e37f89092acb075e8cd45bb507a829c89e736b291aa76d27014257f2","source":{"kind":"arxiv","id":"1206.1205","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.1205","created_at":"2026-05-18T03:54:06Z"},{"alias_kind":"arxiv_version","alias_value":"1206.1205v1","created_at":"2026-05-18T03:54:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.1205","created_at":"2026-05-18T03:54:06Z"},{"alias_kind":"pith_short_12","alias_value":"OL4654XDP6EQ","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OL4654XDP6EQSKWL","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OL4654XD","created_at":"2026-05-18T12:27:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:OL4654XDP6EQSKWLA5PIZVC3WU","target":"record","payload":{"canonical_record":{"source":{"id":"1206.1205","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-06-06T12:48:29Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"a8a3408b2d4208027dcdc10ff9a380a8030be12b28e8b3e298977fde0d6be737","abstract_canon_sha256":"b4b8e2e8d06f5e309be5c798c5fa9279dd2c579b6c543fdc4ffe23bad94130b3"},"schema_version":"1.0"},"canonical_sha256":"72f9eef2e37f89092acb075e8cd45bb507a829c89e736b291aa76d27014257f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:54:06.654388Z","signature_b64":"8flnAl5WFr5YJG9YRl52ZA1e6sYCD3BDYekC+rFSEnnOWBjVfI2TYRJ3V8t9YuFp2XXvGm+4qyJce0ZyqVBUBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"72f9eef2e37f89092acb075e8cd45bb507a829c89e736b291aa76d27014257f2","last_reissued_at":"2026-05-18T03:54:06.653721Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:54:06.653721Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.1205","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":"2026-05-18T03:54:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GRGukA8BO56btspPzxqnO6VnVduFJtz5J+aKy6ZrsNcWp2uWz/ipqbMK8ssShkbxvMSdKd/A+1D4ArB4KW/3Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:21:42.295258Z"},"content_sha256":"e8197e5aedeb14587de5e02f804f16cb63cdaa6fc1445c617d0e586f9f615768","schema_version":"1.0","event_id":"sha256:e8197e5aedeb14587de5e02f804f16cb63cdaa6fc1445c617d0e586f9f615768"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:OL4654XDP6EQSKWLA5PIZVC3WU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical Afterglows and IGM Attenuation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"A. Gomboc, D. Kopa\\v{c}, J. Japelj","submitted_at":"2012-06-06T12:48:29Z","abstract_excerpt":"Because of their cosmological origin, gamma-ray burst (GRB) optical afterglows are attenuated when they pass intergalactic absorbers in the GRB line-of-sight. Without the knowledge of the number of absorbers and their physical properties, the effect of absorption on the observed magnitudes can not be determined precisely. Different methods have been applied in order to correct for this effect statistically, either using semi-analytical calculations or numerical simulations. We follow these works and present the expected magnitude corrections as a function of redshift for a set of filters most "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.1205","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":"2026-05-18T03:54:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/EoBYwdFK0Y5d3uEOHxO7bPml4zlXd0i5Jf9QUgA9qOtu/5TEFbRyQa2PrMbCWjcdwaTtZKJIe67pv8mI/zjBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T21:21:42.295995Z"},"content_sha256":"240748f735138947a102311017e046d5668507cad32061c0c8a6c1a4282b7f56","schema_version":"1.0","event_id":"sha256:240748f735138947a102311017e046d5668507cad32061c0c8a6c1a4282b7f56"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OL4654XDP6EQSKWLA5PIZVC3WU/bundle.json","state_url":"https://pith.science/pith/OL4654XDP6EQSKWLA5PIZVC3WU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OL4654XDP6EQSKWLA5PIZVC3WU/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":"2026-05-31T21:21:42Z","links":{"resolver":"https://pith.science/pith/OL4654XDP6EQSKWLA5PIZVC3WU","bundle":"https://pith.science/pith/OL4654XDP6EQSKWLA5PIZVC3WU/bundle.json","state":"https://pith.science/pith/OL4654XDP6EQSKWLA5PIZVC3WU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OL4654XDP6EQSKWLA5PIZVC3WU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:OL4654XDP6EQSKWLA5PIZVC3WU","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":"b4b8e2e8d06f5e309be5c798c5fa9279dd2c579b6c543fdc4ffe23bad94130b3","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-06-06T12:48:29Z","title_canon_sha256":"a8a3408b2d4208027dcdc10ff9a380a8030be12b28e8b3e298977fde0d6be737"},"schema_version":"1.0","source":{"id":"1206.1205","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.1205","created_at":"2026-05-18T03:54:06Z"},{"alias_kind":"arxiv_version","alias_value":"1206.1205v1","created_at":"2026-05-18T03:54:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.1205","created_at":"2026-05-18T03:54:06Z"},{"alias_kind":"pith_short_12","alias_value":"OL4654XDP6EQ","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_16","alias_value":"OL4654XDP6EQSKWL","created_at":"2026-05-18T12:27:16Z"},{"alias_kind":"pith_short_8","alias_value":"OL4654XD","created_at":"2026-05-18T12:27:16Z"}],"graph_snapshots":[{"event_id":"sha256:240748f735138947a102311017e046d5668507cad32061c0c8a6c1a4282b7f56","target":"graph","created_at":"2026-05-18T03:54:06Z","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":"Because of their cosmological origin, gamma-ray burst (GRB) optical afterglows are attenuated when they pass intergalactic absorbers in the GRB line-of-sight. Without the knowledge of the number of absorbers and their physical properties, the effect of absorption on the observed magnitudes can not be determined precisely. Different methods have been applied in order to correct for this effect statistically, either using semi-analytical calculations or numerical simulations. We follow these works and present the expected magnitude corrections as a function of redshift for a set of filters most ","authors_text":"A. Gomboc, D. Kopa\\v{c}, J. Japelj","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-06-06T12:48:29Z","title":"Optical Afterglows and IGM Attenuation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.1205","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:e8197e5aedeb14587de5e02f804f16cb63cdaa6fc1445c617d0e586f9f615768","target":"record","created_at":"2026-05-18T03:54:06Z","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":"b4b8e2e8d06f5e309be5c798c5fa9279dd2c579b6c543fdc4ffe23bad94130b3","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-06-06T12:48:29Z","title_canon_sha256":"a8a3408b2d4208027dcdc10ff9a380a8030be12b28e8b3e298977fde0d6be737"},"schema_version":"1.0","source":{"id":"1206.1205","kind":"arxiv","version":1}},"canonical_sha256":"72f9eef2e37f89092acb075e8cd45bb507a829c89e736b291aa76d27014257f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"72f9eef2e37f89092acb075e8cd45bb507a829c89e736b291aa76d27014257f2","first_computed_at":"2026-05-18T03:54:06.653721Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:54:06.653721Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8flnAl5WFr5YJG9YRl52ZA1e6sYCD3BDYekC+rFSEnnOWBjVfI2TYRJ3V8t9YuFp2XXvGm+4qyJce0ZyqVBUBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:54:06.654388Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.1205","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e8197e5aedeb14587de5e02f804f16cb63cdaa6fc1445c617d0e586f9f615768","sha256:240748f735138947a102311017e046d5668507cad32061c0c8a6c1a4282b7f56"],"state_sha256":"389bc876b59c7dba4260b2b31916155e6d6787c549aa050f63c100dd21f89f0a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RaZC2U6LbHWJS7K7jiklTadvdknCKcWCd8yvhwspy314U3V28tOQzuW4GZNn9SLv7rL7Kx9DtXBZuj1L2dnCBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T21:21:42.300522Z","bundle_sha256":"59d35c634d079879dde3a57895a255fed55a64d4c92b2a20fb7a8decb80d93ac"}}