{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:BMIDA5VI3RWIJJ7ABJRJHS5VHX","short_pith_number":"pith:BMIDA5VI","canonical_record":{"source":{"id":"1905.03321","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-08T20:30:14Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"28e764765f4a62815d415df4f5b81ed9d32176ef48367091c796bf64695c87b4","abstract_canon_sha256":"363aec635bc6bed220976b7ee21a432b8a6e6e30143dabde7d61197caf7ebc71"},"schema_version":"1.0"},"canonical_sha256":"0b103076a8dc6c84a7e00a6293cbb53de4ca2f91588a51b91c000227cff3210b","source":{"kind":"arxiv","id":"1905.03321","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.03321","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"1905.03321v1","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.03321","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"BMIDA5VI3RWI","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BMIDA5VI3RWIJJ7A","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BMIDA5VI","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:BMIDA5VI3RWIJJ7ABJRJHS5VHX","target":"record","payload":{"canonical_record":{"source":{"id":"1905.03321","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-08T20:30:14Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"28e764765f4a62815d415df4f5b81ed9d32176ef48367091c796bf64695c87b4","abstract_canon_sha256":"363aec635bc6bed220976b7ee21a432b8a6e6e30143dabde7d61197caf7ebc71"},"schema_version":"1.0"},"canonical_sha256":"0b103076a8dc6c84a7e00a6293cbb53de4ca2f91588a51b91c000227cff3210b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:34.336666Z","signature_b64":"6SvW5sbPsYQyPgabZP4MZ3QeaL4YC3m6MFOmDv8wzHX6cfXNRFt7y6mIjuad1KOZoBMVxxCgOQguXwa/wfS5Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0b103076a8dc6c84a7e00a6293cbb53de4ca2f91588a51b91c000227cff3210b","last_reissued_at":"2026-05-17T23:43:34.336207Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:34.336207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1905.03321","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":"2026-05-17T23:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CJkLt6+uBtINllmZ50DWzvcOCECG1m76fS/XRNjbJJavOx121gjiroHzSxW7yKEIVc3mDbF9H2QkbbaaocvwCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T12:54:18.266127Z"},"content_sha256":"e86e7dd86ab82ce2277e5f87821c428d72dd8fc43759841d0a5c1443fb36a5f8","schema_version":"1.0","event_id":"sha256:e86e7dd86ab82ce2277e5f87821c428d72dd8fc43759841d0a5c1443fb36a5f8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:BMIDA5VI3RWIJJ7ABJRJHS5VHX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Binospec Software System","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.IM","authors_text":"Anne Matthews, Dallan Porter, Daniel Fabricant, Igor Chilingarian, Jan Kansky, J. Duane Gibson, John Roll, Martin Paegert, Sean Moran","submitted_at":"2019-05-08T20:30:14Z","abstract_excerpt":"Binospec is a high-throughput, 370 to 1000 nm, imaging spectrograph that addresses two adjacent 8' by 15' fields of view. Binospec was commissioned in late 2017 at the f/5 focus of the 6.5m MMT and is now available to all MMT observers. Here we describe the Binospec software used for observation planning, instrument control, and data reduction. The software and control systems incorporate a high level of automation to minimize observer workload. Instrument configuration and observation sequencing is implemented using a database-driven approach to maximize observatory efficiency. A web-based in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.03321","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":"2026-05-17T23:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f0EzuMalAu3JfdPH1Liw1iKqh6AP05/WJA0S19pm7Qc5NXX8jiqZ0taB6nEzCDNr3yl/UYKFa4vmHI94IdReCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T12:54:18.266683Z"},"content_sha256":"27a7e10168f1f85169f5169e1c2d876cfbb03f8e60bfe84834c934a6e33aa252","schema_version":"1.0","event_id":"sha256:27a7e10168f1f85169f5169e1c2d876cfbb03f8e60bfe84834c934a6e33aa252"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BMIDA5VI3RWIJJ7ABJRJHS5VHX/bundle.json","state_url":"https://pith.science/pith/BMIDA5VI3RWIJJ7ABJRJHS5VHX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BMIDA5VI3RWIJJ7ABJRJHS5VHX/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":"2026-05-21T12:54:18Z","links":{"resolver":"https://pith.science/pith/BMIDA5VI3RWIJJ7ABJRJHS5VHX","bundle":"https://pith.science/pith/BMIDA5VI3RWIJJ7ABJRJHS5VHX/bundle.json","state":"https://pith.science/pith/BMIDA5VI3RWIJJ7ABJRJHS5VHX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BMIDA5VI3RWIJJ7ABJRJHS5VHX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:BMIDA5VI3RWIJJ7ABJRJHS5VHX","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":"363aec635bc6bed220976b7ee21a432b8a6e6e30143dabde7d61197caf7ebc71","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-08T20:30:14Z","title_canon_sha256":"28e764765f4a62815d415df4f5b81ed9d32176ef48367091c796bf64695c87b4"},"schema_version":"1.0","source":{"id":"1905.03321","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1905.03321","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"1905.03321v1","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.03321","created_at":"2026-05-17T23:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"BMIDA5VI3RWI","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"BMIDA5VI3RWIJJ7A","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"BMIDA5VI","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:27a7e10168f1f85169f5169e1c2d876cfbb03f8e60bfe84834c934a6e33aa252","target":"graph","created_at":"2026-05-17T23:43:34Z","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":"Binospec is a high-throughput, 370 to 1000 nm, imaging spectrograph that addresses two adjacent 8' by 15' fields of view. Binospec was commissioned in late 2017 at the f/5 focus of the 6.5m MMT and is now available to all MMT observers. Here we describe the Binospec software used for observation planning, instrument control, and data reduction. The software and control systems incorporate a high level of automation to minimize observer workload. Instrument configuration and observation sequencing is implemented using a database-driven approach to maximize observatory efficiency. A web-based in","authors_text":"Anne Matthews, Dallan Porter, Daniel Fabricant, Igor Chilingarian, Jan Kansky, J. Duane Gibson, John Roll, Martin Paegert, Sean Moran","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-08T20:30:14Z","title":"Binospec Software System"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.03321","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:e86e7dd86ab82ce2277e5f87821c428d72dd8fc43759841d0a5c1443fb36a5f8","target":"record","created_at":"2026-05-17T23:43:34Z","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":"363aec635bc6bed220976b7ee21a432b8a6e6e30143dabde7d61197caf7ebc71","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-05-08T20:30:14Z","title_canon_sha256":"28e764765f4a62815d415df4f5b81ed9d32176ef48367091c796bf64695c87b4"},"schema_version":"1.0","source":{"id":"1905.03321","kind":"arxiv","version":1}},"canonical_sha256":"0b103076a8dc6c84a7e00a6293cbb53de4ca2f91588a51b91c000227cff3210b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b103076a8dc6c84a7e00a6293cbb53de4ca2f91588a51b91c000227cff3210b","first_computed_at":"2026-05-17T23:43:34.336207Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:43:34.336207Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6SvW5sbPsYQyPgabZP4MZ3QeaL4YC3m6MFOmDv8wzHX6cfXNRFt7y6mIjuad1KOZoBMVxxCgOQguXwa/wfS5Cg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:43:34.336666Z","signed_message":"canonical_sha256_bytes"},"source_id":"1905.03321","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e86e7dd86ab82ce2277e5f87821c428d72dd8fc43759841d0a5c1443fb36a5f8","sha256:27a7e10168f1f85169f5169e1c2d876cfbb03f8e60bfe84834c934a6e33aa252"],"state_sha256":"bae62c9bbb0cbdaef0efc11e584723649f475db94ce885befdda2b38dd363bb6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"edhZJn5y7ndMzhaxRfy0nnc5+L19vB1O7r9KQzlyuz5zaSBQM8Qe05Ew5eB55EHdjavUcVYdiTiGGcMrYFyrAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T12:54:18.269457Z","bundle_sha256":"aa641896716aa465d8cad6565d32549ad831ce1d58edcd4f89bc123da9b6f8ee"}}