{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ZT6SR4AVCJKHQTYWGFIPBIYQGQ","short_pith_number":"pith:ZT6SR4AV","canonical_record":{"source":{"id":"1612.08235","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-25T05:17:46Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"e8f28f6bd7a2e9f54349844276ab7ca121d2291b1bc1bf41764a9c2b19bd6f06","abstract_canon_sha256":"1c27d29783c127ffba37e1687da608308bfad1a84959d4f88ce4faa0d47ea0a6"},"schema_version":"1.0"},"canonical_sha256":"ccfd28f0151254784f163150f0a310341664d14dfa8342321e2073d10455abe8","source":{"kind":"arxiv","id":"1612.08235","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.08235","created_at":"2026-05-18T00:49:50Z"},{"alias_kind":"arxiv_version","alias_value":"1612.08235v2","created_at":"2026-05-18T00:49:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.08235","created_at":"2026-05-18T00:49:50Z"},{"alias_kind":"pith_short_12","alias_value":"ZT6SR4AVCJKH","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZT6SR4AVCJKHQTYW","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZT6SR4AV","created_at":"2026-05-18T12:30:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ZT6SR4AVCJKHQTYWGFIPBIYQGQ","target":"record","payload":{"canonical_record":{"source":{"id":"1612.08235","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-25T05:17:46Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"e8f28f6bd7a2e9f54349844276ab7ca121d2291b1bc1bf41764a9c2b19bd6f06","abstract_canon_sha256":"1c27d29783c127ffba37e1687da608308bfad1a84959d4f88ce4faa0d47ea0a6"},"schema_version":"1.0"},"canonical_sha256":"ccfd28f0151254784f163150f0a310341664d14dfa8342321e2073d10455abe8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:49:50.790161Z","signature_b64":"0sZu9SUf22OWU5CusPlIjzKhaSNwsE5zbmoNGDKONvs2ds3eSBJ8BJkNNeM8F9KIFWQDFnBK2Y+9491ex5XjAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ccfd28f0151254784f163150f0a310341664d14dfa8342321e2073d10455abe8","last_reissued_at":"2026-05-18T00:49:50.789666Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:49:50.789666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1612.08235","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":"2026-05-18T00:49:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nnUnneZzVCJLaDyhrRQWA7zdl90Wh2gKgEUyipuH942Pnwo+WpIGYvSV/ikuNHKuccSuGUcJWtLk53zt0kaGCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T18:21:42.101227Z"},"content_sha256":"58c4e740e307a7ab066cadb360b0e5c9ff75a9091a63403cb59defddcd93959c","schema_version":"1.0","event_id":"sha256:58c4e740e307a7ab066cadb360b0e5c9ff75a9091a63403cb59defddcd93959c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ZT6SR4AVCJKHQTYWGFIPBIYQGQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Classification of Gamma-Ray Burst durations using robust model-comparison techniques","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"Shantanu Desai, Soham Kulkarni","submitted_at":"2016-12-25T05:17:46Z","abstract_excerpt":"Gamma-Ray Bursts (GRBs) have been conventionally bifurcated into two distinct categories dubbed \"short\" and \"long\", depending on whether their durations are less than or greater than two seconds respectively. However, many authors have pointed to the existence of a third class of GRBs with mean durations intermediate between the short and long GRBs. Here, we apply multiple model comparison techniques to verify these claims. For each category, we obtain the best-fit parameters by maximizing a likelihood function based on a weighted superposition of lognormal distributions. We then do model-comp"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.08235","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":"2026-05-18T00:49:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3GbONH0crcHmrRt3l0wg1hON0XFA8vsR18NKT4khIpGok3qWwPBYaYpORuXw//GEznJ9GN2jVQCKLK7MOyo7AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T18:21:42.101628Z"},"content_sha256":"332fee563b1fca4f05ebe90852f23122978e06db330a166e6d42faef5dd8b94e","schema_version":"1.0","event_id":"sha256:332fee563b1fca4f05ebe90852f23122978e06db330a166e6d42faef5dd8b94e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZT6SR4AVCJKHQTYWGFIPBIYQGQ/bundle.json","state_url":"https://pith.science/pith/ZT6SR4AVCJKHQTYWGFIPBIYQGQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZT6SR4AVCJKHQTYWGFIPBIYQGQ/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":"2026-05-21T18:21:42Z","links":{"resolver":"https://pith.science/pith/ZT6SR4AVCJKHQTYWGFIPBIYQGQ","bundle":"https://pith.science/pith/ZT6SR4AVCJKHQTYWGFIPBIYQGQ/bundle.json","state":"https://pith.science/pith/ZT6SR4AVCJKHQTYWGFIPBIYQGQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZT6SR4AVCJKHQTYWGFIPBIYQGQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ZT6SR4AVCJKHQTYWGFIPBIYQGQ","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":"1c27d29783c127ffba37e1687da608308bfad1a84959d4f88ce4faa0d47ea0a6","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-25T05:17:46Z","title_canon_sha256":"e8f28f6bd7a2e9f54349844276ab7ca121d2291b1bc1bf41764a9c2b19bd6f06"},"schema_version":"1.0","source":{"id":"1612.08235","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1612.08235","created_at":"2026-05-18T00:49:50Z"},{"alias_kind":"arxiv_version","alias_value":"1612.08235v2","created_at":"2026-05-18T00:49:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1612.08235","created_at":"2026-05-18T00:49:50Z"},{"alias_kind":"pith_short_12","alias_value":"ZT6SR4AVCJKH","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_16","alias_value":"ZT6SR4AVCJKHQTYW","created_at":"2026-05-18T12:30:55Z"},{"alias_kind":"pith_short_8","alias_value":"ZT6SR4AV","created_at":"2026-05-18T12:30:55Z"}],"graph_snapshots":[{"event_id":"sha256:332fee563b1fca4f05ebe90852f23122978e06db330a166e6d42faef5dd8b94e","target":"graph","created_at":"2026-05-18T00:49:50Z","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) have been conventionally bifurcated into two distinct categories dubbed \"short\" and \"long\", depending on whether their durations are less than or greater than two seconds respectively. However, many authors have pointed to the existence of a third class of GRBs with mean durations intermediate between the short and long GRBs. Here, we apply multiple model comparison techniques to verify these claims. For each category, we obtain the best-fit parameters by maximizing a likelihood function based on a weighted superposition of lognormal distributions. We then do model-comp","authors_text":"Shantanu Desai, Soham Kulkarni","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-25T05:17:46Z","title":"Classification of Gamma-Ray Burst durations using robust model-comparison techniques"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1612.08235","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":"sha256:58c4e740e307a7ab066cadb360b0e5c9ff75a9091a63403cb59defddcd93959c","target":"record","created_at":"2026-05-18T00:49:50Z","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":"1c27d29783c127ffba37e1687da608308bfad1a84959d4f88ce4faa0d47ea0a6","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-12-25T05:17:46Z","title_canon_sha256":"e8f28f6bd7a2e9f54349844276ab7ca121d2291b1bc1bf41764a9c2b19bd6f06"},"schema_version":"1.0","source":{"id":"1612.08235","kind":"arxiv","version":2}},"canonical_sha256":"ccfd28f0151254784f163150f0a310341664d14dfa8342321e2073d10455abe8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ccfd28f0151254784f163150f0a310341664d14dfa8342321e2073d10455abe8","first_computed_at":"2026-05-18T00:49:50.789666Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:50.789666Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0sZu9SUf22OWU5CusPlIjzKhaSNwsE5zbmoNGDKONvs2ds3eSBJ8BJkNNeM8F9KIFWQDFnBK2Y+9491ex5XjAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:50.790161Z","signed_message":"canonical_sha256_bytes"},"source_id":"1612.08235","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58c4e740e307a7ab066cadb360b0e5c9ff75a9091a63403cb59defddcd93959c","sha256:332fee563b1fca4f05ebe90852f23122978e06db330a166e6d42faef5dd8b94e"],"state_sha256":"e100b3a11bf423d9ef25b39a45cdf3f3520ffab49a8e99f297f7af7c90761975"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HCBbiNjJrF9znj2XjrrOE5bos1xtxk9oodDjGFQ9wQc4u/Vu04+jSkZdFlObvp0JjwF3XoKIbHRr6BrO1fwYBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T18:21:42.103621Z","bundle_sha256":"6a85220c24107d0f0f5eab21383a54d750c6f5a1b6412009b372e9dff69fe5c3"}}