{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:JREBRPZJ55APZSYAY6JE3D2M36","short_pith_number":"pith:JREBRPZJ","canonical_record":{"source":{"id":"1812.02204","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-12-05T19:55:04Z","cross_cats_sorted":[],"title_canon_sha256":"076f6a141db5939ca9847d993292d2718f2418de285739899a21f1277e21f1c5","abstract_canon_sha256":"65307771613eb2d980edd700829fc9e23a288f056bed9975ec2c554e96135116"},"schema_version":"1.0"},"canonical_sha256":"4c4818bf29ef40fccb00c7924d8f4cdf88d3ae11a2cf24748b366f29fdeebb12","source":{"kind":"arxiv","id":"1812.02204","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.02204","created_at":"2026-05-17T23:58:56Z"},{"alias_kind":"arxiv_version","alias_value":"1812.02204v1","created_at":"2026-05-17T23:58:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.02204","created_at":"2026-05-17T23:58:56Z"},{"alias_kind":"pith_short_12","alias_value":"JREBRPZJ55AP","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JREBRPZJ55APZSYA","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JREBRPZJ","created_at":"2026-05-18T12:32:31Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:JREBRPZJ55APZSYAY6JE3D2M36","target":"record","payload":{"canonical_record":{"source":{"id":"1812.02204","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-12-05T19:55:04Z","cross_cats_sorted":[],"title_canon_sha256":"076f6a141db5939ca9847d993292d2718f2418de285739899a21f1277e21f1c5","abstract_canon_sha256":"65307771613eb2d980edd700829fc9e23a288f056bed9975ec2c554e96135116"},"schema_version":"1.0"},"canonical_sha256":"4c4818bf29ef40fccb00c7924d8f4cdf88d3ae11a2cf24748b366f29fdeebb12","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:58:56.911777Z","signature_b64":"KNnTLzJahWnmByMLc3Uh8JDqDDCsVV55GA9uAfb99gdt+MWc22KYAhV+ASAnQqCqOoSLgqQmz9MchcEBvRnJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4c4818bf29ef40fccb00c7924d8f4cdf88d3ae11a2cf24748b366f29fdeebb12","last_reissued_at":"2026-05-17T23:58:56.911230Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:58:56.911230Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1812.02204","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":"2026-05-17T23:58:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"P/5ACc0A8JAgab8m35bZw1WojbUDQ4EPYy22vDAQLFpwR/rlW0fu74+6Y9sYRdvSGWTxfu1aF3+4o+jKPO00CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:41:36.230556Z"},"content_sha256":"bae4f50af7d68902b5d5b14b7f673737a616b85fa1683aa5200c060477f76732","schema_version":"1.0","event_id":"sha256:bae4f50af7d68902b5d5b14b7f673737a616b85fa1683aa5200c060477f76732"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:JREBRPZJ55APZSYAY6JE3D2M36","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Big Sky Approach to Cadence Diplomacy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Adam Bolton, Daniel Eisenstein, Eric Gawiser, Hsing Wen \"Edward\" Lin, Humna Awan, Knut Olsen, Marcella Di Criscienzo, Megan E. Schwamb, Phil Marshall, R. Lynne Jones","submitted_at":"2018-12-05T19:55:04Z","abstract_excerpt":"The LSST survey was designed to deliver transformative results for four primary objectives: constraining dark energy and dark matter, taking an inventory of the Solar System, exploring the transient optical sky, and mapping the Milky Way. While the LSST Wide-Fast-Deep survey and accompanying Deep Drilling and mini-surveys will be ground-breaking for each of these areas, there remain competing demands on the survey area, depth, and temporal coverage amid a desire to maximize all three. In this white paper, we seek to address a principal source of tension between the different LSST science colla"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.02204","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":"2026-05-17T23:58:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RvG9THhSM9WebNzaHvImnETe5F/KA/8HR7YeGca9EiBOvA5RV45XvnsMnJ7JYfc0Io4HYIiIR91iWnl3oQw8Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:41:36.231245Z"},"content_sha256":"095780349030b217f43525ec223e3bccdc38cb41675c88b3ed091bce97a1bd49","schema_version":"1.0","event_id":"sha256:095780349030b217f43525ec223e3bccdc38cb41675c88b3ed091bce97a1bd49"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JREBRPZJ55APZSYAY6JE3D2M36/bundle.json","state_url":"https://pith.science/pith/JREBRPZJ55APZSYAY6JE3D2M36/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JREBRPZJ55APZSYAY6JE3D2M36/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":"2026-05-26T06:41:36Z","links":{"resolver":"https://pith.science/pith/JREBRPZJ55APZSYAY6JE3D2M36","bundle":"https://pith.science/pith/JREBRPZJ55APZSYAY6JE3D2M36/bundle.json","state":"https://pith.science/pith/JREBRPZJ55APZSYAY6JE3D2M36/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JREBRPZJ55APZSYAY6JE3D2M36/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:JREBRPZJ55APZSYAY6JE3D2M36","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":"65307771613eb2d980edd700829fc9e23a288f056bed9975ec2c554e96135116","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-12-05T19:55:04Z","title_canon_sha256":"076f6a141db5939ca9847d993292d2718f2418de285739899a21f1277e21f1c5"},"schema_version":"1.0","source":{"id":"1812.02204","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.02204","created_at":"2026-05-17T23:58:56Z"},{"alias_kind":"arxiv_version","alias_value":"1812.02204v1","created_at":"2026-05-17T23:58:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.02204","created_at":"2026-05-17T23:58:56Z"},{"alias_kind":"pith_short_12","alias_value":"JREBRPZJ55AP","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_16","alias_value":"JREBRPZJ55APZSYA","created_at":"2026-05-18T12:32:31Z"},{"alias_kind":"pith_short_8","alias_value":"JREBRPZJ","created_at":"2026-05-18T12:32:31Z"}],"graph_snapshots":[{"event_id":"sha256:095780349030b217f43525ec223e3bccdc38cb41675c88b3ed091bce97a1bd49","target":"graph","created_at":"2026-05-17T23:58:56Z","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":"The LSST survey was designed to deliver transformative results for four primary objectives: constraining dark energy and dark matter, taking an inventory of the Solar System, exploring the transient optical sky, and mapping the Milky Way. While the LSST Wide-Fast-Deep survey and accompanying Deep Drilling and mini-surveys will be ground-breaking for each of these areas, there remain competing demands on the survey area, depth, and temporal coverage amid a desire to maximize all three. In this white paper, we seek to address a principal source of tension between the different LSST science colla","authors_text":"Adam Bolton, Daniel Eisenstein, Eric Gawiser, Hsing Wen \"Edward\" Lin, Humna Awan, Knut Olsen, Marcella Di Criscienzo, Megan E. Schwamb, Phil Marshall, R. Lynne Jones","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-12-05T19:55:04Z","title":"A Big Sky Approach to Cadence Diplomacy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.02204","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:bae4f50af7d68902b5d5b14b7f673737a616b85fa1683aa5200c060477f76732","target":"record","created_at":"2026-05-17T23:58:56Z","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":"65307771613eb2d980edd700829fc9e23a288f056bed9975ec2c554e96135116","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2018-12-05T19:55:04Z","title_canon_sha256":"076f6a141db5939ca9847d993292d2718f2418de285739899a21f1277e21f1c5"},"schema_version":"1.0","source":{"id":"1812.02204","kind":"arxiv","version":1}},"canonical_sha256":"4c4818bf29ef40fccb00c7924d8f4cdf88d3ae11a2cf24748b366f29fdeebb12","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4c4818bf29ef40fccb00c7924d8f4cdf88d3ae11a2cf24748b366f29fdeebb12","first_computed_at":"2026-05-17T23:58:56.911230Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:58:56.911230Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KNnTLzJahWnmByMLc3Uh8JDqDDCsVV55GA9uAfb99gdt+MWc22KYAhV+ASAnQqCqOoSLgqQmz9MchcEBvRnJDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:58:56.911777Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.02204","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bae4f50af7d68902b5d5b14b7f673737a616b85fa1683aa5200c060477f76732","sha256:095780349030b217f43525ec223e3bccdc38cb41675c88b3ed091bce97a1bd49"],"state_sha256":"c38a79a4a662b983799bc1e85a2a0bb4a346f04565356739bdbddbfa67b19c1a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WHmxNwD1MeK4Cf3UhfzhVsRGtw6nn8G+DKq55mB2LRBpi2eU8wf7QbXJor+yJ5hd5ugcnZGhMJY+dkA4q3UFAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T06:41:36.234967Z","bundle_sha256":"4a05eaf4785b8ec24e4c858bb7d79375039dc3ebd3018216e1d0a61a6cf85fe4"}}