{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:KCGFVESV7ESJAUP3XXEQJWESNQ","short_pith_number":"pith:KCGFVESV","canonical_record":{"source":{"id":"1911.02154","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-11-06T00:45:41Z","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-ex","physics.space-ph"],"title_canon_sha256":"ab6bfb006848e1a415b67df951f7fa59f8ce1bb2e22de77f6c61b2cbb7f2eb1d","abstract_canon_sha256":"8082f879a85daba767dc84e6fe5ae6ffd258914122b33a6e547f4efd6e2b6204"},"schema_version":"1.0"},"canonical_sha256":"508c5a9255f9249051fbbdc904d8926c1f64826730f50067cb46e3f8032df139","source":{"kind":"arxiv","id":"1911.02154","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.02154","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"arxiv_version","alias_value":"1911.02154v2","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.02154","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"pith_short_12","alias_value":"KCGFVESV7ESJ","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"KCGFVESV7ESJAUP3","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"KCGFVESV","created_at":"2026-07-05T01:30:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:KCGFVESV7ESJAUP3XXEQJWESNQ","target":"record","payload":{"canonical_record":{"source":{"id":"1911.02154","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-11-06T00:45:41Z","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-ex","physics.space-ph"],"title_canon_sha256":"ab6bfb006848e1a415b67df951f7fa59f8ce1bb2e22de77f6c61b2cbb7f2eb1d","abstract_canon_sha256":"8082f879a85daba767dc84e6fe5ae6ffd258914122b33a6e547f4efd6e2b6204"},"schema_version":"1.0"},"canonical_sha256":"508c5a9255f9249051fbbdc904d8926c1f64826730f50067cb46e3f8032df139","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:30:39.069956Z","signature_b64":"4THM1W4AKzu9fpMjfw56GsVAg26IqmbLzwZStTYmx6EzA/lqoUuZZ6QqAfXEzQwAQiht8qE1HCkfrO4C7RBYDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"508c5a9255f9249051fbbdc904d8926c1f64826730f50067cb46e3f8032df139","last_reissued_at":"2026-07-05T01:30:39.069543Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:30:39.069543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1911.02154","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":"2026-07-05T01:30:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B8scf36v4RPrlkOD+c63CSKd8ytbqw1rgKVkTzFcvRSZvEnvphi+Z6o3p3wC7CE1qo0+tHC6QUV5FBmr5//QAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T14:49:35.236118Z"},"content_sha256":"b3579027c5be35bedd9738fc4759c58b156a8c6495c29123025183eb65cca505","schema_version":"1.0","event_id":"sha256:b3579027c5be35bedd9738fc4759c58b156a8c6495c29123025183eb65cca505"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:KCGFVESV7ESJAUP3XXEQJWESNQ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ESA Voyage 2050 white paper -- GrailQuest: hunting for Atoms of Space and Time hidden in the wrinkle of Space-Time","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE","gr-qc","hep-ex","physics.space-ph"],"primary_cat":"astro-ph.IM","authors_text":"A. F. Gambino, A. Papitto, A. Riggio, A. Sanna, A. Santangelo, B. Negri, C. Labanti, C. Rovelli, D. Kataria, E. Coccia, E. Costa, F. Fiore, F. Frontera, F. Vidotto, G. Amelino-Camelia, G. Ghisellini, G. Lodato, H. Falcke, K. Hurley, L. Amati, L. Burderi, M. Branchesi, M. Colpi, M. De Laurentis, M. Della Valle, M. Feroci, N. d'Amico, P. De Bernardis, R. Iaria, S. Capozziello, S. Zane, T. Di Salvo, T. Piran","submitted_at":"2019-11-06T00:45:41Z","abstract_excerpt":"GrailQuest (Gamma Ray Astronomy International Laboratory for QUantum Exploration of Space-Time) is a mission concept based on a constellation (hundreds/thousands) of nano/micro/small-satellites in low (or near) Earth orbits. Each satellite hosts a non-collimated array of scintillator crystals coupled with Silicon Drift Detectors with broad energy band coverage (keV-MeV range) and excellent temporal resolution ( below or equal 100 nanoseconds) each with effective area around 100 cm2. This simple and robust design allows for mass-production of the satellites of the fleet. This revolutionary appr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.02154","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/1911.02154/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":"2026-07-05T01:30:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"apDiHWTRMeK8ivBBvE8BqLeG6kt0sUv02tD7R3Ayv/3SuSL3ILrkHwHS7W+SQ/fbkJee/nnn8opA/UfiZDUGAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T14:49:35.236524Z"},"content_sha256":"150c33c0f3f1ad33035ef29f2300160f4b8b4f5fbc47ff7b307f8fe7c56e2f58","schema_version":"1.0","event_id":"sha256:150c33c0f3f1ad33035ef29f2300160f4b8b4f5fbc47ff7b307f8fe7c56e2f58"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KCGFVESV7ESJAUP3XXEQJWESNQ/bundle.json","state_url":"https://pith.science/pith/KCGFVESV7ESJAUP3XXEQJWESNQ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KCGFVESV7ESJAUP3XXEQJWESNQ/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":"2026-07-16T14:49:35Z","links":{"resolver":"https://pith.science/pith/KCGFVESV7ESJAUP3XXEQJWESNQ","bundle":"https://pith.science/pith/KCGFVESV7ESJAUP3XXEQJWESNQ/bundle.json","state":"https://pith.science/pith/KCGFVESV7ESJAUP3XXEQJWESNQ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KCGFVESV7ESJAUP3XXEQJWESNQ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:KCGFVESV7ESJAUP3XXEQJWESNQ","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":"8082f879a85daba767dc84e6fe5ae6ffd258914122b33a6e547f4efd6e2b6204","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-ex","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-11-06T00:45:41Z","title_canon_sha256":"ab6bfb006848e1a415b67df951f7fa59f8ce1bb2e22de77f6c61b2cbb7f2eb1d"},"schema_version":"1.0","source":{"id":"1911.02154","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1911.02154","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"arxiv_version","alias_value":"1911.02154v2","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1911.02154","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"pith_short_12","alias_value":"KCGFVESV7ESJ","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"pith_short_16","alias_value":"KCGFVESV7ESJAUP3","created_at":"2026-07-05T01:30:39Z"},{"alias_kind":"pith_short_8","alias_value":"KCGFVESV","created_at":"2026-07-05T01:30:39Z"}],"graph_snapshots":[{"event_id":"sha256:150c33c0f3f1ad33035ef29f2300160f4b8b4f5fbc47ff7b307f8fe7c56e2f58","target":"graph","created_at":"2026-07-05T01:30:39Z","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/1911.02154/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"GrailQuest (Gamma Ray Astronomy International Laboratory for QUantum Exploration of Space-Time) is a mission concept based on a constellation (hundreds/thousands) of nano/micro/small-satellites in low (or near) Earth orbits. Each satellite hosts a non-collimated array of scintillator crystals coupled with Silicon Drift Detectors with broad energy band coverage (keV-MeV range) and excellent temporal resolution ( below or equal 100 nanoseconds) each with effective area around 100 cm2. This simple and robust design allows for mass-production of the satellites of the fleet. This revolutionary appr","authors_text":"A. F. Gambino, A. Papitto, A. Riggio, A. Sanna, A. Santangelo, B. Negri, C. Labanti, C. Rovelli, D. Kataria, E. Coccia, E. Costa, F. Fiore, F. Frontera, F. Vidotto, G. Amelino-Camelia, G. Ghisellini, G. Lodato, H. Falcke, K. Hurley, L. Amati, L. Burderi, M. Branchesi, M. Colpi, M. De Laurentis, M. Della Valle, M. Feroci, N. d'Amico, P. De Bernardis, R. Iaria, S. Capozziello, S. Zane, T. Di Salvo, T. Piran","cross_cats":["astro-ph.HE","gr-qc","hep-ex","physics.space-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-11-06T00:45:41Z","title":"ESA Voyage 2050 white paper -- GrailQuest: hunting for Atoms of Space and Time hidden in the wrinkle of Space-Time"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1911.02154","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:b3579027c5be35bedd9738fc4759c58b156a8c6495c29123025183eb65cca505","target":"record","created_at":"2026-07-05T01:30:39Z","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":"8082f879a85daba767dc84e6fe5ae6ffd258914122b33a6e547f4efd6e2b6204","cross_cats_sorted":["astro-ph.HE","gr-qc","hep-ex","physics.space-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-11-06T00:45:41Z","title_canon_sha256":"ab6bfb006848e1a415b67df951f7fa59f8ce1bb2e22de77f6c61b2cbb7f2eb1d"},"schema_version":"1.0","source":{"id":"1911.02154","kind":"arxiv","version":2}},"canonical_sha256":"508c5a9255f9249051fbbdc904d8926c1f64826730f50067cb46e3f8032df139","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"508c5a9255f9249051fbbdc904d8926c1f64826730f50067cb46e3f8032df139","first_computed_at":"2026-07-05T01:30:39.069543Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:30:39.069543Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4THM1W4AKzu9fpMjfw56GsVAg26IqmbLzwZStTYmx6EzA/lqoUuZZ6QqAfXEzQwAQiht8qE1HCkfrO4C7RBYDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T01:30:39.069956Z","signed_message":"canonical_sha256_bytes"},"source_id":"1911.02154","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b3579027c5be35bedd9738fc4759c58b156a8c6495c29123025183eb65cca505","sha256:150c33c0f3f1ad33035ef29f2300160f4b8b4f5fbc47ff7b307f8fe7c56e2f58"],"state_sha256":"51868ff209783176f2ec1a163c423272440d99a78c275cce41036a9195a44164"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1bdaKGvBrl9/NX46/7WflnL1dx4eil5qhBqFzBoM2lKUIxMS6nNtDsvTnthCvaKZQ8txJPWtzNPJWMY17kCaCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-16T14:49:35.238783Z","bundle_sha256":"7b7e298b4e53fcf2cef3c78248b7ecffa382a6fb958d5ad7b6b921064e080968"}}