{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:7BQKOHK7QRN7D2XLAZVPTLEWIK","short_pith_number":"pith:7BQKOHK7","canonical_record":{"source":{"id":"2112.04555","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-08T19:57:19Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"5b42780707d96c7495961cd18d96d87a82c5bfdebe0d36c4e5541aab4fef6ba9","abstract_canon_sha256":"7349efb0013a22a44f395833436aefab3cc81e6ef562b52868068fccadbe5086"},"schema_version":"1.0"},"canonical_sha256":"f860a71d5f845bf1eaeb066af9ac96428e101994d2f6c63029bd99a136fd32c6","source":{"kind":"arxiv","id":"2112.04555","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.04555","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"arxiv_version","alias_value":"2112.04555v2","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.04555","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"pith_short_12","alias_value":"7BQKOHK7QRN7","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"pith_short_16","alias_value":"7BQKOHK7QRN7D2XL","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"pith_short_8","alias_value":"7BQKOHK7","created_at":"2026-07-05T04:22:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:7BQKOHK7QRN7D2XLAZVPTLEWIK","target":"record","payload":{"canonical_record":{"source":{"id":"2112.04555","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-08T19:57:19Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"5b42780707d96c7495961cd18d96d87a82c5bfdebe0d36c4e5541aab4fef6ba9","abstract_canon_sha256":"7349efb0013a22a44f395833436aefab3cc81e6ef562b52868068fccadbe5086"},"schema_version":"1.0"},"canonical_sha256":"f860a71d5f845bf1eaeb066af9ac96428e101994d2f6c63029bd99a136fd32c6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:22:18.516044Z","signature_b64":"crC7Pm+fA3QBvo+Jvj3pYBjkTo+K9VnvKQA7YfnfuaLPZ7wR3x+dbiBirJZ6l9mMS2+R+54+XBWV5d4lkRrMAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f860a71d5f845bf1eaeb066af9ac96428e101994d2f6c63029bd99a136fd32c6","last_reissued_at":"2026-07-05T04:22:18.515522Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:22:18.515522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.04555","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":"2026-07-05T04:22:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rEih1Ntw0SVGk5ohE06Q8v+W906xtkMlki+moRx1nwgilcGL0jtzta3/pkpwoSOTpvxWe9bw6i8lASYb7bO0CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T04:02:34.428519Z"},"content_sha256":"f9ebd6545d8bc93ee642e2c069305c8af779a2ba6ce6dc51919933f9c6d1896f","schema_version":"1.0","event_id":"sha256:f9ebd6545d8bc93ee642e2c069305c8af779a2ba6ce6dc51919933f9c6d1896f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:7BQKOHK7QRN7D2XLAZVPTLEWIK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Searches for Modulated {\\gamma}-Ray Precursors to Compact Binary Mergers in Fermi-GBM Data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Cosmin Stachie, Eric Burns, Jordan Camp, Marie-Anne Bizouard, Michael Briggs, Michael Coughlin, Nelson Christensen, Tito Dal Canton","submitted_at":"2021-12-08T19:57:19Z","abstract_excerpt":"GW170817 is the only gravitational-wave (GW) event, for which a confirmed {\\gamma}-ray counterpart, GRB 170817A, has been detected. Here we present a method to search for another type of {\\gamma}-ray signal, a {\\gamma}-ray burst precursor, associated with a compact binary merger. If emitted shortly before the coalescence, a high-energy electromagnetic (EM) flash travels through a highly dynamical and relativistic environment, created by the two compact objects orbiting each other. Thus, the EM signal arriving at an Earth observer could present a somewhat predictable time-dependent modulation. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.04555","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2112.04555/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:22:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+/Ni5dYE5Tie8+aufhYxOc8O6pQ9FNIA/gw+UhW8b9sURJy1FIcM5TFxolDtafS8b9sDGT1FKynadCiKINbSAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T04:02:34.430762Z"},"content_sha256":"82a67d7270b71e0196079a473fff7321ebeca168423d4ef4af1a60b3fd0122d9","schema_version":"1.0","event_id":"sha256:82a67d7270b71e0196079a473fff7321ebeca168423d4ef4af1a60b3fd0122d9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7BQKOHK7QRN7D2XLAZVPTLEWIK/bundle.json","state_url":"https://pith.science/pith/7BQKOHK7QRN7D2XLAZVPTLEWIK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7BQKOHK7QRN7D2XLAZVPTLEWIK/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":"2026-08-20T04:02:34Z","links":{"resolver":"https://pith.science/pith/7BQKOHK7QRN7D2XLAZVPTLEWIK","bundle":"https://pith.science/pith/7BQKOHK7QRN7D2XLAZVPTLEWIK/bundle.json","state":"https://pith.science/pith/7BQKOHK7QRN7D2XLAZVPTLEWIK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7BQKOHK7QRN7D2XLAZVPTLEWIK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:7BQKOHK7QRN7D2XLAZVPTLEWIK","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":"7349efb0013a22a44f395833436aefab3cc81e6ef562b52868068fccadbe5086","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-08T19:57:19Z","title_canon_sha256":"5b42780707d96c7495961cd18d96d87a82c5bfdebe0d36c4e5541aab4fef6ba9"},"schema_version":"1.0","source":{"id":"2112.04555","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.04555","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"arxiv_version","alias_value":"2112.04555v2","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.04555","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"pith_short_12","alias_value":"7BQKOHK7QRN7","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"pith_short_16","alias_value":"7BQKOHK7QRN7D2XL","created_at":"2026-07-05T04:22:18Z"},{"alias_kind":"pith_short_8","alias_value":"7BQKOHK7","created_at":"2026-07-05T04:22:18Z"}],"graph_snapshots":[{"event_id":"sha256:82a67d7270b71e0196079a473fff7321ebeca168423d4ef4af1a60b3fd0122d9","target":"graph","created_at":"2026-07-05T04:22:18Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2112.04555/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"GW170817 is the only gravitational-wave (GW) event, for which a confirmed {\\gamma}-ray counterpart, GRB 170817A, has been detected. Here we present a method to search for another type of {\\gamma}-ray signal, a {\\gamma}-ray burst precursor, associated with a compact binary merger. If emitted shortly before the coalescence, a high-energy electromagnetic (EM) flash travels through a highly dynamical and relativistic environment, created by the two compact objects orbiting each other. Thus, the EM signal arriving at an Earth observer could present a somewhat predictable time-dependent modulation. ","authors_text":"Cosmin Stachie, Eric Burns, Jordan Camp, Marie-Anne Bizouard, Michael Briggs, Michael Coughlin, Nelson Christensen, Tito Dal Canton","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-08T19:57:19Z","title":"Searches for Modulated {\\gamma}-Ray Precursors to Compact Binary Mergers in Fermi-GBM Data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.04555","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:f9ebd6545d8bc93ee642e2c069305c8af779a2ba6ce6dc51919933f9c6d1896f","target":"record","created_at":"2026-07-05T04:22:18Z","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":"7349efb0013a22a44f395833436aefab3cc81e6ef562b52868068fccadbe5086","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-12-08T19:57:19Z","title_canon_sha256":"5b42780707d96c7495961cd18d96d87a82c5bfdebe0d36c4e5541aab4fef6ba9"},"schema_version":"1.0","source":{"id":"2112.04555","kind":"arxiv","version":2}},"canonical_sha256":"f860a71d5f845bf1eaeb066af9ac96428e101994d2f6c63029bd99a136fd32c6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f860a71d5f845bf1eaeb066af9ac96428e101994d2f6c63029bd99a136fd32c6","first_computed_at":"2026-07-05T04:22:18.515522Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:22:18.515522Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"crC7Pm+fA3QBvo+Jvj3pYBjkTo+K9VnvKQA7YfnfuaLPZ7wR3x+dbiBirJZ6l9mMS2+R+54+XBWV5d4lkRrMAg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:22:18.516044Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.04555","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9ebd6545d8bc93ee642e2c069305c8af779a2ba6ce6dc51919933f9c6d1896f","sha256:82a67d7270b71e0196079a473fff7321ebeca168423d4ef4af1a60b3fd0122d9"],"state_sha256":"9e68b33a821aaa1e4202e1853ed49dac8d2f667eb322089d10dab550139f714e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QXqHMWaEG7RFyCHKyd7Bj/6XSgG8NDw6Di3rkL3YoJZ7BmyI0/Hg4DIwW19rp6O4UuuStBWGDBX45AQGwQlnCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T04:02:34.434578Z","bundle_sha256":"fe2e9e7c632476850e5d595b926dadd609b3b6d4f21e39c21656f8071e7d2de3"}}