{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:45SVAL7CJYPVZL2AC2U4YIDYXH","short_pith_number":"pith:45SVAL7C","canonical_record":{"source":{"id":"1903.06634","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-15T16:20:33Z","cross_cats_sorted":["astro-ph.EP","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"5e8b28e1b55fd84fab9ceb0d45f86e4aee0d582a821dfe063fceb5601f072378","abstract_canon_sha256":"32e3ef6857c6a4aac3c32c727634bc4ec330151981e883ceb0f0cc3196f7b3b2"},"schema_version":"1.0"},"canonical_sha256":"e765502fe24e1f5caf4016a9cc2078b9d6db8dbdc1ee3a3b439a4c644ac710aa","source":{"kind":"arxiv","id":"1903.06634","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.06634","created_at":"2026-05-17T23:51:04Z"},{"alias_kind":"arxiv_version","alias_value":"1903.06634v2","created_at":"2026-05-17T23:51:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.06634","created_at":"2026-05-17T23:51:04Z"},{"alias_kind":"pith_short_12","alias_value":"45SVAL7CJYPV","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"45SVAL7CJYPVZL2A","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"45SVAL7C","created_at":"2026-05-18T12:33:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:45SVAL7CJYPVZL2AC2U4YIDYXH","target":"record","payload":{"canonical_record":{"source":{"id":"1903.06634","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-15T16:20:33Z","cross_cats_sorted":["astro-ph.EP","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"title_canon_sha256":"5e8b28e1b55fd84fab9ceb0d45f86e4aee0d582a821dfe063fceb5601f072378","abstract_canon_sha256":"32e3ef6857c6a4aac3c32c727634bc4ec330151981e883ceb0f0cc3196f7b3b2"},"schema_version":"1.0"},"canonical_sha256":"e765502fe24e1f5caf4016a9cc2078b9d6db8dbdc1ee3a3b439a4c644ac710aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:04.685469Z","signature_b64":"Oe/khtyXdvgXieJ1Idz/FiAHndYCo9oBOOfyLHvE6x45KblBBLw0TBEOtQF8zxEoSsCz+igovfPxEXxNWXW4Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e765502fe24e1f5caf4016a9cc2078b9d6db8dbdc1ee3a3b439a4c644ac710aa","last_reissued_at":"2026-05-17T23:51:04.684916Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:04.684916Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.06634","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":"2026-05-17T23:51:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ql2qVCdM+plgJMmYFiU+/HqDwcgnRb4fl2DViB9cBvKyaF3V1NYW7uKeC4aR+qYcyLdBv6AT11YDamBaUB7hDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T21:44:21.496845Z"},"content_sha256":"322e179b84d2041ce18cf9034e9619f94d3523250675b5e1f8ce50e1330b4b13","schema_version":"1.0","event_id":"sha256:322e179b84d2041ce18cf9034e9619f94d3523250675b5e1f8ce50e1330b4b13"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:45SVAL7CJYPVZL2AC2U4YIDYXH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Increasing the Discovery Space in Astrophysics - A Collation of Six Submitted White Papers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"A. Accomazzi, A. Siemiginowska, A. Smth, A. Szentgyorgyi, A. Thakar, B. Czerny, B. Diemer, B. Wilkes, D. Carrera, D. J. James, D. Sanders, D. Wilner, D.-W. Kim, E. Feigelson, E. Lusso, F. Civano, F. Fornasini, G. B. Berriman, G. Fabbiano, G. G. Fazio, G. M. Lacy, G. Risaliti, I. Chilingarian, I. Shapiro, Jay Gallagher, J. Drake, J. Grindlay, J.-H. Zhao, J. Lazio, J. Mazzarella, J. R. Farah, L. Hernquist, M. Elvis, M. Karovska, M. Ntampaka, N. Brickhouse, N. Scoville, R. d'Abrusco, R. Emami Meibody, R. Martinez Galarza, S. Bose, S. J. Wolk, S. P. Willner, S. Smith, S. Tacchella, S. Vrtilek, V. Kashyap, V. Tolls, W. P. Maksym","submitted_at":"2019-03-15T16:20:33Z","abstract_excerpt":"We write in response to the call from the 2020 Decadal Survey to submit white papers illustrating the most pressing scientific questions in astrophysics for the coming decade. We propose exploration as the central question for the Decadal Committee's discussions.The history of astronomy shows that paradigm changing discoveries are not driven by well formulated scientific questions, based on the knowledge of the time. They were instead the result of the increase in discovery space fostered by new telescopes and instruments. An additional tool for increasing the discovery space is provided by th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.06634","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":"2026-05-17T23:51:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F8oFdQ+e3sQtv4cYUbZ8FbC7XG+o4Sw0Q9hp5ayR55SrzQClMZDn1RKjtCKjShiEl2twd1+i9ZCIOc/wHY+/DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T21:44:21.497517Z"},"content_sha256":"53e0c90a7f7b9b5e58fcb60839d54e35ea480ddd98ade68cdde20fc81ec89399","schema_version":"1.0","event_id":"sha256:53e0c90a7f7b9b5e58fcb60839d54e35ea480ddd98ade68cdde20fc81ec89399"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/45SVAL7CJYPVZL2AC2U4YIDYXH/bundle.json","state_url":"https://pith.science/pith/45SVAL7CJYPVZL2AC2U4YIDYXH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/45SVAL7CJYPVZL2AC2U4YIDYXH/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":"2026-05-29T21:44:21Z","links":{"resolver":"https://pith.science/pith/45SVAL7CJYPVZL2AC2U4YIDYXH","bundle":"https://pith.science/pith/45SVAL7CJYPVZL2AC2U4YIDYXH/bundle.json","state":"https://pith.science/pith/45SVAL7CJYPVZL2AC2U4YIDYXH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/45SVAL7CJYPVZL2AC2U4YIDYXH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:45SVAL7CJYPVZL2AC2U4YIDYXH","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":"32e3ef6857c6a4aac3c32c727634bc4ec330151981e883ceb0f0cc3196f7b3b2","cross_cats_sorted":["astro-ph.EP","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-15T16:20:33Z","title_canon_sha256":"5e8b28e1b55fd84fab9ceb0d45f86e4aee0d582a821dfe063fceb5601f072378"},"schema_version":"1.0","source":{"id":"1903.06634","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.06634","created_at":"2026-05-17T23:51:04Z"},{"alias_kind":"arxiv_version","alias_value":"1903.06634v2","created_at":"2026-05-17T23:51:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.06634","created_at":"2026-05-17T23:51:04Z"},{"alias_kind":"pith_short_12","alias_value":"45SVAL7CJYPV","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_16","alias_value":"45SVAL7CJYPVZL2A","created_at":"2026-05-18T12:33:10Z"},{"alias_kind":"pith_short_8","alias_value":"45SVAL7C","created_at":"2026-05-18T12:33:10Z"}],"graph_snapshots":[{"event_id":"sha256:53e0c90a7f7b9b5e58fcb60839d54e35ea480ddd98ade68cdde20fc81ec89399","target":"graph","created_at":"2026-05-17T23:51:04Z","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":"We write in response to the call from the 2020 Decadal Survey to submit white papers illustrating the most pressing scientific questions in astrophysics for the coming decade. We propose exploration as the central question for the Decadal Committee's discussions.The history of astronomy shows that paradigm changing discoveries are not driven by well formulated scientific questions, based on the knowledge of the time. They were instead the result of the increase in discovery space fostered by new telescopes and instruments. An additional tool for increasing the discovery space is provided by th","authors_text":"A. Accomazzi, A. Siemiginowska, A. Smth, A. Szentgyorgyi, A. Thakar, B. Czerny, B. Diemer, B. Wilkes, D. Carrera, D. J. James, D. Sanders, D. Wilner, D.-W. Kim, E. Feigelson, E. Lusso, F. Civano, F. Fornasini, G. B. Berriman, G. Fabbiano, G. G. Fazio, G. M. Lacy, G. Risaliti, I. Chilingarian, I. Shapiro, Jay Gallagher, J. Drake, J. Grindlay, J.-H. Zhao, J. Lazio, J. Mazzarella, J. R. Farah, L. Hernquist, M. Elvis, M. Karovska, M. Ntampaka, N. Brickhouse, N. Scoville, R. d'Abrusco, R. Emami Meibody, R. Martinez Galarza, S. Bose, S. J. Wolk, S. P. Willner, S. Smith, S. Tacchella, S. Vrtilek, V. Kashyap, V. Tolls, W. P. Maksym","cross_cats":["astro-ph.EP","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-15T16:20:33Z","title":"Increasing the Discovery Space in Astrophysics - A Collation of Six Submitted White Papers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.06634","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":"sha256:322e179b84d2041ce18cf9034e9619f94d3523250675b5e1f8ce50e1330b4b13","target":"record","created_at":"2026-05-17T23:51:04Z","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":"32e3ef6857c6a4aac3c32c727634bc4ec330151981e883ceb0f0cc3196f7b3b2","cross_cats_sorted":["astro-ph.EP","astro-ph.HE","astro-ph.IM","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-03-15T16:20:33Z","title_canon_sha256":"5e8b28e1b55fd84fab9ceb0d45f86e4aee0d582a821dfe063fceb5601f072378"},"schema_version":"1.0","source":{"id":"1903.06634","kind":"arxiv","version":2}},"canonical_sha256":"e765502fe24e1f5caf4016a9cc2078b9d6db8dbdc1ee3a3b439a4c644ac710aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e765502fe24e1f5caf4016a9cc2078b9d6db8dbdc1ee3a3b439a4c644ac710aa","first_computed_at":"2026-05-17T23:51:04.684916Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:04.684916Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Oe/khtyXdvgXieJ1Idz/FiAHndYCo9oBOOfyLHvE6x45KblBBLw0TBEOtQF8zxEoSsCz+igovfPxEXxNWXW4Cw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:04.685469Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.06634","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:322e179b84d2041ce18cf9034e9619f94d3523250675b5e1f8ce50e1330b4b13","sha256:53e0c90a7f7b9b5e58fcb60839d54e35ea480ddd98ade68cdde20fc81ec89399"],"state_sha256":"ecab0c85f8e4546bcb70cdba4a4efaf99405f9c8ee8dc632c0840265053ea77c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EMqamE3ZnQaRVpkU60GQdTBrJGvoBjlyyKigp/eefbEl1Gmicx6P/lwYWr1/J2teEJxGzmzvisSaLH1TDM4bAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T21:44:21.500898Z","bundle_sha256":"a989bf5ea957a56e6bc71ca27ca7bfea584b6f0ea9ff651ee4287661d63b4daf"}}