{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:J3RMZKDYUJBDICSKURDPGL24TT","short_pith_number":"pith:J3RMZKDY","canonical_record":{"source":{"id":"1907.06715","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-15T19:45:50Z","cross_cats_sorted":[],"title_canon_sha256":"29c0f289767d263a9ee4a06c5fc6fd7a9cc38adb1bd056671dad4a44725ba6c1","abstract_canon_sha256":"4c78c2d6ebd5dbf9c302aca13aadf15baf5f362c230a9865a49e5ed14660f204"},"schema_version":"1.0"},"canonical_sha256":"4ee2cca878a242340a4aa446f32f5c9cf259798ad6c0ea091994143f8a3b9d94","source":{"kind":"arxiv","id":"1907.06715","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.06715","created_at":"2026-05-17T23:40:29Z"},{"alias_kind":"arxiv_version","alias_value":"1907.06715v1","created_at":"2026-05-17T23:40:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.06715","created_at":"2026-05-17T23:40:29Z"},{"alias_kind":"pith_short_12","alias_value":"J3RMZKDYUJBD","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"J3RMZKDYUJBDICSK","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"J3RMZKDY","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:J3RMZKDYUJBDICSKURDPGL24TT","target":"record","payload":{"canonical_record":{"source":{"id":"1907.06715","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-15T19:45:50Z","cross_cats_sorted":[],"title_canon_sha256":"29c0f289767d263a9ee4a06c5fc6fd7a9cc38adb1bd056671dad4a44725ba6c1","abstract_canon_sha256":"4c78c2d6ebd5dbf9c302aca13aadf15baf5f362c230a9865a49e5ed14660f204"},"schema_version":"1.0"},"canonical_sha256":"4ee2cca878a242340a4aa446f32f5c9cf259798ad6c0ea091994143f8a3b9d94","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:29.384862Z","signature_b64":"ZkXAPknTkUIFhUIZT/HpR44V53UwTnZpC0V7TRPLeqmj9tU9i50528rdBOIgoZ9aYsdl+s9YsiIqhasRqu6+Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4ee2cca878a242340a4aa446f32f5c9cf259798ad6c0ea091994143f8a3b9d94","last_reissued_at":"2026-05-17T23:40:29.384200Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:29.384200Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.06715","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:40:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hJx5hHmCTEe8xVNeYM6CobSZ7cLECjoWiZRs9r/UQDOnau79IZmfNe0LJ/EzBAC5Kjm5fB1rP7y2tt9whaRbCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:59:45.538781Z"},"content_sha256":"8503748837e00dc7e44d05a20e9202aae0fdfa6fde07f0e9d77e818a91b52d1f","schema_version":"1.0","event_id":"sha256:8503748837e00dc7e44d05a20e9202aae0fdfa6fde07f0e9d77e818a91b52d1f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:J3RMZKDYUJBDICSKURDPGL24TT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"2020 Vision: Towards a Sustainable OIR System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Brad Barlow (High Point), Carnegie Observatories), Charles Bailyn (Yale), Derek Buzasi (Florida Gulf Coast), Fred Walter (Stony Brook), J. Allyn Smith (Austin Peay), Jay Gallagher (Wisconsin), Jedidah Isler (Dartmouth), Jim Webb (FIU), John Salzer (Indiana), Leslie Hebb (Hobart, Michael Meyer (Michigan), Misty Bentz (Georgia State), Patrick Kelly (Minnesota), Rachael Beaton (Princeton, Sally Oey (Michigan), Simone Scaringi (Texas Tech), Terry Oswalt (Embry Riddle), Todd Henry (Georgia State), Tom Maccarone (Texas Tech), William Smith)","submitted_at":"2019-07-15T19:45:50Z","abstract_excerpt":"Open-access telescopes of all apertures are needed to operate a competitive and efficient national science program. While larger facilities contribute light-gathering power and angular resolution, smaller ones dominate for field of view, time-resolution, and especially, total available observing time, thereby enabling our entire, diversely-expert community. Smaller aperture telescopes therefore play a critical and indispensable role in advancing science. Thus, the divestment of NSF support for modest-aperture (1 - 4 m) public telescopes poses a serious threat to U.S. scientific leadership, whi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.06715","kind":"arxiv","version":1},"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":"2026-05-17T23:40:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uMh290CkZqh9mLhxznPujCQG1MEpliXUdd1kbXsvIKFBeLrhxqG5zrFbiizQntzELhZEVAgabskl7IDX8puJCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T16:59:45.539146Z"},"content_sha256":"78099cdea691dee67077ca3e7176b2b30b627ecc4a6790f9c508aedaf3316bbd","schema_version":"1.0","event_id":"sha256:78099cdea691dee67077ca3e7176b2b30b627ecc4a6790f9c508aedaf3316bbd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/J3RMZKDYUJBDICSKURDPGL24TT/bundle.json","state_url":"https://pith.science/pith/J3RMZKDYUJBDICSKURDPGL24TT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/J3RMZKDYUJBDICSKURDPGL24TT/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":"2026-05-26T16:59:45Z","links":{"resolver":"https://pith.science/pith/J3RMZKDYUJBDICSKURDPGL24TT","bundle":"https://pith.science/pith/J3RMZKDYUJBDICSKURDPGL24TT/bundle.json","state":"https://pith.science/pith/J3RMZKDYUJBDICSKURDPGL24TT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/J3RMZKDYUJBDICSKURDPGL24TT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:J3RMZKDYUJBDICSKURDPGL24TT","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":"4c78c2d6ebd5dbf9c302aca13aadf15baf5f362c230a9865a49e5ed14660f204","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-15T19:45:50Z","title_canon_sha256":"29c0f289767d263a9ee4a06c5fc6fd7a9cc38adb1bd056671dad4a44725ba6c1"},"schema_version":"1.0","source":{"id":"1907.06715","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.06715","created_at":"2026-05-17T23:40:29Z"},{"alias_kind":"arxiv_version","alias_value":"1907.06715v1","created_at":"2026-05-17T23:40:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.06715","created_at":"2026-05-17T23:40:29Z"},{"alias_kind":"pith_short_12","alias_value":"J3RMZKDYUJBD","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"J3RMZKDYUJBDICSK","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"J3RMZKDY","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:78099cdea691dee67077ca3e7176b2b30b627ecc4a6790f9c508aedaf3316bbd","target":"graph","created_at":"2026-05-17T23:40:29Z","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":"Open-access telescopes of all apertures are needed to operate a competitive and efficient national science program. While larger facilities contribute light-gathering power and angular resolution, smaller ones dominate for field of view, time-resolution, and especially, total available observing time, thereby enabling our entire, diversely-expert community. Smaller aperture telescopes therefore play a critical and indispensable role in advancing science. Thus, the divestment of NSF support for modest-aperture (1 - 4 m) public telescopes poses a serious threat to U.S. scientific leadership, whi","authors_text":"Brad Barlow (High Point), Carnegie Observatories), Charles Bailyn (Yale), Derek Buzasi (Florida Gulf Coast), Fred Walter (Stony Brook), J. Allyn Smith (Austin Peay), Jay Gallagher (Wisconsin), Jedidah Isler (Dartmouth), Jim Webb (FIU), John Salzer (Indiana), Leslie Hebb (Hobart, Michael Meyer (Michigan), Misty Bentz (Georgia State), Patrick Kelly (Minnesota), Rachael Beaton (Princeton, Sally Oey (Michigan), Simone Scaringi (Texas Tech), Terry Oswalt (Embry Riddle), Todd Henry (Georgia State), Tom Maccarone (Texas Tech), William Smith)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-15T19:45:50Z","title":"2020 Vision: Towards a Sustainable OIR System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.06715","kind":"arxiv","version":1},"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":"sha256:8503748837e00dc7e44d05a20e9202aae0fdfa6fde07f0e9d77e818a91b52d1f","target":"record","created_at":"2026-05-17T23:40:29Z","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":"4c78c2d6ebd5dbf9c302aca13aadf15baf5f362c230a9865a49e5ed14660f204","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-07-15T19:45:50Z","title_canon_sha256":"29c0f289767d263a9ee4a06c5fc6fd7a9cc38adb1bd056671dad4a44725ba6c1"},"schema_version":"1.0","source":{"id":"1907.06715","kind":"arxiv","version":1}},"canonical_sha256":"4ee2cca878a242340a4aa446f32f5c9cf259798ad6c0ea091994143f8a3b9d94","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4ee2cca878a242340a4aa446f32f5c9cf259798ad6c0ea091994143f8a3b9d94","first_computed_at":"2026-05-17T23:40:29.384200Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:40:29.384200Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZkXAPknTkUIFhUIZT/HpR44V53UwTnZpC0V7TRPLeqmj9tU9i50528rdBOIgoZ9aYsdl+s9YsiIqhasRqu6+Dg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:40:29.384862Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.06715","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8503748837e00dc7e44d05a20e9202aae0fdfa6fde07f0e9d77e818a91b52d1f","sha256:78099cdea691dee67077ca3e7176b2b30b627ecc4a6790f9c508aedaf3316bbd"],"state_sha256":"6e8196f6c0bbaf6aed3c543d78efb7ee5fc3c5d1a8a43c7f37ac3faa449a4efe"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WGdtmAIyeqYZWXTwSSj2DNhBnDP8mATLozjRruxeToh9wPWY6nhAaKluG2haTRDWuPDoltUb+bLjRt+gDGTGDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T16:59:45.541742Z","bundle_sha256":"1b4f55acbb1de4504321b4821c35c2c1bc2c3fc17c82c10005063ba28ba24933"}}