{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:52ZW3VILXPFS7A6J66XRDQKGUA","short_pith_number":"pith:52ZW3VIL","canonical_record":{"source":{"id":"2111.06497","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-11-11T23:22:03Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"bba580d1e8fb6585488e30808ffaba95ffcd711da2aaedc511bc8b90f5fb43f9","abstract_canon_sha256":"0d7ab11ce8de5462eb0ef655898d260820ce327403fc4ff7806ef5b5c35601c2"},"schema_version":"1.0"},"canonical_sha256":"eeb36dd50bbbcb2f83c9f7af11c146a01dc5247f890f46d5e3e6ea242b8219b4","source":{"kind":"arxiv","id":"2111.06497","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.06497","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"arxiv_version","alias_value":"2111.06497v2","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.06497","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"pith_short_12","alias_value":"52ZW3VILXPFS","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"pith_short_16","alias_value":"52ZW3VILXPFS7A6J","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"pith_short_8","alias_value":"52ZW3VIL","created_at":"2026-07-05T03:32:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:52ZW3VILXPFS7A6J66XRDQKGUA","target":"record","payload":{"canonical_record":{"source":{"id":"2111.06497","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-11-11T23:22:03Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"bba580d1e8fb6585488e30808ffaba95ffcd711da2aaedc511bc8b90f5fb43f9","abstract_canon_sha256":"0d7ab11ce8de5462eb0ef655898d260820ce327403fc4ff7806ef5b5c35601c2"},"schema_version":"1.0"},"canonical_sha256":"eeb36dd50bbbcb2f83c9f7af11c146a01dc5247f890f46d5e3e6ea242b8219b4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:32:27.794420Z","signature_b64":"ebulUoploJ1GlAGNyvOw3QUkGCiYUG7a4zi6WVFYwuGp3IZm67+byIz8T+mU3Z8RfzI0kLj/NCa5gx/AQwLjAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eeb36dd50bbbcb2f83c9f7af11c146a01dc5247f890f46d5e3e6ea242b8219b4","last_reissued_at":"2026-07-05T03:32:27.793971Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:32:27.793971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2111.06497","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":"2026-07-05T03:32:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EKgmRcrYDOvqeDST2Tk08imF0HSiHZ88qikGdHNJSWzbm80fJWhz1PomWcwsrmbUzYXHYkaFykOPRZuoH1nzAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T20:41:26.465001Z"},"content_sha256":"fb3074d9203222e3fcbe1af6d7cf342e93f44bc8c6796107d9586d8dfb60229d","schema_version":"1.0","event_id":"sha256:fb3074d9203222e3fcbe1af6d7cf342e93f44bc8c6796107d9586d8dfb60229d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:52ZW3VILXPFS7A6J66XRDQKGUA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Gamow Explorer: A gamma-ray burst observatory to study the high redshift universe and enable multi-messenger astrophysics","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.HE","authors_text":"A. Falcone, A. Fruchter, A. J. Levan, A. Kennea, A. Lidz, A. Lien, A. van der Horst, C. Feldman, C. Fryer, C. Hernandez-Monteagudo, C. Kouveliotou, C. Lawrence, C. Wilson-Hodge, D. A. Kann, D. Fox, D. Hartmann, D. Kaplan, D. Kocevski, D.M. Palmer, D. Pasham, E. Berger, E. Bozzo, E. Burns, E.T. Young, F.E. Bauer, G. Ghirlanda, G. Sun, H. Fausey, J., J.A. Rubino-Martin, J. Granot, J. Hennawi, J. O'Meara, J. Racusin, K. Gorski, K. Grant, L. Amati, L. Mas-Ribas, M. Bautz, M. Hart, M. Moss, M. Rud, M. Seiffert, N.E. White, N. R. Tanvir, N. Thomas, O. Fox, O.J. Roberts, O.{\\L}. Karczewski, P. Bemiamini, P. O'Brien, P. Roming, P. Willems, R. Genova-Santos, R. Gill, R. Rebolo Lopez, R. Remillard, R. Salvaterra, R. Sambruna, R. Terrile, S. B. Cenko, S. Guiriec, T.B. Littenberg, T.-C. Chang, W. Baumgartner, W.T. Verstrand","submitted_at":"2021-11-11T23:22:03Z","abstract_excerpt":"The Gamow Explorer will use Gamma Ray Bursts (GRBs) to: 1) probe the high redshift universe (z > 6) when the first stars were born, galaxies formed and Hydrogen was reionized; and 2) enable multi-messenger astrophysics by rapidly identifying Electro-Magnetic (IR/Optical/X-ray) counterparts to Gravitational Wave (GW) events. GRBs have been detected out to z ~ 9 and their afterglows are a bright beacon lasting a few days that can be used to observe the spectral fingerprints of the host galaxy and intergalactic medium to map the period of reionization and early metal enrichment. Gamow Explorer is"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.06497","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/2111.06497/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":"2026-07-05T03:32:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GXfVnaWy8kzVfkZE38Y5tShDP0V9EtqrZeScbAaJUm1HnZBoYkFhyoOF/VrdbIKq/ekKnL6E/8nUA3csHNTjCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-31T20:41:26.465493Z"},"content_sha256":"4bf4a5896820a9d87d36ec09acf683dae05cf1e35b5910d9a73632f28d463865","schema_version":"1.0","event_id":"sha256:4bf4a5896820a9d87d36ec09acf683dae05cf1e35b5910d9a73632f28d463865"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/52ZW3VILXPFS7A6J66XRDQKGUA/bundle.json","state_url":"https://pith.science/pith/52ZW3VILXPFS7A6J66XRDQKGUA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/52ZW3VILXPFS7A6J66XRDQKGUA/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":"2026-07-31T20:41:26Z","links":{"resolver":"https://pith.science/pith/52ZW3VILXPFS7A6J66XRDQKGUA","bundle":"https://pith.science/pith/52ZW3VILXPFS7A6J66XRDQKGUA/bundle.json","state":"https://pith.science/pith/52ZW3VILXPFS7A6J66XRDQKGUA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/52ZW3VILXPFS7A6J66XRDQKGUA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:52ZW3VILXPFS7A6J66XRDQKGUA","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":"0d7ab11ce8de5462eb0ef655898d260820ce327403fc4ff7806ef5b5c35601c2","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-11-11T23:22:03Z","title_canon_sha256":"bba580d1e8fb6585488e30808ffaba95ffcd711da2aaedc511bc8b90f5fb43f9"},"schema_version":"1.0","source":{"id":"2111.06497","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2111.06497","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"arxiv_version","alias_value":"2111.06497v2","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2111.06497","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"pith_short_12","alias_value":"52ZW3VILXPFS","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"pith_short_16","alias_value":"52ZW3VILXPFS7A6J","created_at":"2026-07-05T03:32:27Z"},{"alias_kind":"pith_short_8","alias_value":"52ZW3VIL","created_at":"2026-07-05T03:32:27Z"}],"graph_snapshots":[{"event_id":"sha256:4bf4a5896820a9d87d36ec09acf683dae05cf1e35b5910d9a73632f28d463865","target":"graph","created_at":"2026-07-05T03:32:27Z","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/2111.06497/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The Gamow Explorer will use Gamma Ray Bursts (GRBs) to: 1) probe the high redshift universe (z > 6) when the first stars were born, galaxies formed and Hydrogen was reionized; and 2) enable multi-messenger astrophysics by rapidly identifying Electro-Magnetic (IR/Optical/X-ray) counterparts to Gravitational Wave (GW) events. GRBs have been detected out to z ~ 9 and their afterglows are a bright beacon lasting a few days that can be used to observe the spectral fingerprints of the host galaxy and intergalactic medium to map the period of reionization and early metal enrichment. Gamow Explorer is","authors_text":"A. Falcone, A. Fruchter, A. J. Levan, A. Kennea, A. Lidz, A. Lien, A. van der Horst, C. Feldman, C. Fryer, C. Hernandez-Monteagudo, C. Kouveliotou, C. Lawrence, C. Wilson-Hodge, D. A. Kann, D. Fox, D. Hartmann, D. Kaplan, D. Kocevski, D.M. Palmer, D. Pasham, E. Berger, E. Bozzo, E. Burns, E.T. Young, F.E. Bauer, G. Ghirlanda, G. Sun, H. Fausey, J., J.A. Rubino-Martin, J. Granot, J. Hennawi, J. O'Meara, J. Racusin, K. Gorski, K. Grant, L. Amati, L. Mas-Ribas, M. Bautz, M. Hart, M. Moss, M. Rud, M. Seiffert, N.E. White, N. R. Tanvir, N. Thomas, O. Fox, O.J. Roberts, O.{\\L}. Karczewski, P. Bemiamini, P. O'Brien, P. Roming, P. Willems, R. Genova-Santos, R. Gill, R. Rebolo Lopez, R. Remillard, R. Salvaterra, R. Sambruna, R. Terrile, S. B. Cenko, S. Guiriec, T.B. Littenberg, T.-C. Chang, W. Baumgartner, W.T. Verstrand","cross_cats":["astro-ph.IM"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-11-11T23:22:03Z","title":"The Gamow Explorer: A gamma-ray burst observatory to study the high redshift universe and enable multi-messenger astrophysics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.06497","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:fb3074d9203222e3fcbe1af6d7cf342e93f44bc8c6796107d9586d8dfb60229d","target":"record","created_at":"2026-07-05T03:32:27Z","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":"0d7ab11ce8de5462eb0ef655898d260820ce327403fc4ff7806ef5b5c35601c2","cross_cats_sorted":["astro-ph.IM"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2021-11-11T23:22:03Z","title_canon_sha256":"bba580d1e8fb6585488e30808ffaba95ffcd711da2aaedc511bc8b90f5fb43f9"},"schema_version":"1.0","source":{"id":"2111.06497","kind":"arxiv","version":2}},"canonical_sha256":"eeb36dd50bbbcb2f83c9f7af11c146a01dc5247f890f46d5e3e6ea242b8219b4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eeb36dd50bbbcb2f83c9f7af11c146a01dc5247f890f46d5e3e6ea242b8219b4","first_computed_at":"2026-07-05T03:32:27.793971Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:32:27.793971Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ebulUoploJ1GlAGNyvOw3QUkGCiYUG7a4zi6WVFYwuGp3IZm67+byIz8T+mU3Z8RfzI0kLj/NCa5gx/AQwLjAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:32:27.794420Z","signed_message":"canonical_sha256_bytes"},"source_id":"2111.06497","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb3074d9203222e3fcbe1af6d7cf342e93f44bc8c6796107d9586d8dfb60229d","sha256:4bf4a5896820a9d87d36ec09acf683dae05cf1e35b5910d9a73632f28d463865"],"state_sha256":"efd3f023dba500b35b4908f6d0bffab60ac85c4bb871611034cffef2089c5076"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O9z+jomNx9oWjkUsrvASfO7v45lAnUabW6dbCSlgyEIJIknhzvUYCPdd0z2dCpn6RvxWNoHRH6lkPOD6PO5mCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-31T20:41:26.475648Z","bundle_sha256":"80410f49fa8176f70b925806f0fd2772a25e175637aa0b79e9401b4d62044a63"}}