{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:KRVLQG6RDUEUB63X2KMHIE53OD","short_pith_number":"pith:KRVLQG6R","canonical_record":{"source":{"id":"2008.00010","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-31T18:00:04Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"b8a86edb54eca96ec96d61a5d6adbb6a999a7efdc5345a65848fb60ef7c3b1cc","abstract_canon_sha256":"94efe8d293f13102e53faeb6c4e54d0138db84dd8f3c7763eea1d480100e0082"},"schema_version":"1.0"},"canonical_sha256":"546ab81bd11d0940fb77d2987413bb70dbe6a501b1657788a5185deba67c90a2","source":{"kind":"arxiv","id":"2008.00010","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.00010","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"arxiv_version","alias_value":"2008.00010v1","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.00010","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"pith_short_12","alias_value":"KRVLQG6RDUEU","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"pith_short_16","alias_value":"KRVLQG6RDUEUB63X","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"pith_short_8","alias_value":"KRVLQG6R","created_at":"2026-07-05T01:33:41Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:KRVLQG6RDUEUB63X2KMHIE53OD","target":"record","payload":{"canonical_record":{"source":{"id":"2008.00010","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-31T18:00:04Z","cross_cats_sorted":["astro-ph.IM"],"title_canon_sha256":"b8a86edb54eca96ec96d61a5d6adbb6a999a7efdc5345a65848fb60ef7c3b1cc","abstract_canon_sha256":"94efe8d293f13102e53faeb6c4e54d0138db84dd8f3c7763eea1d480100e0082"},"schema_version":"1.0"},"canonical_sha256":"546ab81bd11d0940fb77d2987413bb70dbe6a501b1657788a5185deba67c90a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:33:41.940461Z","signature_b64":"j5k0/QejVD7f//FlDWyReBC8e3M7UXUYttySeyHz35hkPOW34U+cTMsWGiQncxkBnSCF69ynU1tIfrBg3WGNAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"546ab81bd11d0940fb77d2987413bb70dbe6a501b1657788a5185deba67c90a2","last_reissued_at":"2026-07-05T01:33:41.940052Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:33:41.940052Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2008.00010","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":"2026-07-05T01:33:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dm6a6QclIKWeE90cVJJ1lmP4GHREHShCxjfp1g4P7csPP34rlsaBbaI2qSjsnzBcHFAxdGHKPJneTGRCoB8iCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:49:51.359574Z"},"content_sha256":"606b734c03377242e30a067f02f8ec37247c723871274c397c983c32daebd63d","schema_version":"1.0","event_id":"sha256:606b734c03377242e30a067f02f8ec37247c723871274c397c983c32daebd63d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:KRVLQG6RDUEUB63X2KMHIE53OD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Novel Survey for Young Substellar Objects with the W-band Filter. I. Filter Design and New Discoveries in Ophiuchus and Perseus","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.IM"],"primary_cat":"astro-ph.SR","authors_text":"Katelyn N. Allers (Bucknell), Michael C. Liu (IfA/Hawaii)","submitted_at":"2020-07-31T18:00:04Z","abstract_excerpt":"We present the design and implementation of a medium-band near-IR filter tailored for detecting low-mass stars and brown dwarfs from the summit of Maunakea. The W-band filter is centered at 1.45 micron with a bandpass width of 6%, designed to measure the depth of the H2O water absorption prominent in objects with spectral types of M6 and later. When combined with standard J- and H-band photometry, the W-band filter is designed to determine spectral types to $\\approx$1.4 subtypes for late-M and L dwarfs, largely independent of surface gravity and reddening. This filter's primary application is "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.00010","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2008.00010/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":"2026-07-05T01:33:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pGCFdFSGoTT3+dkGfzzLCPyIbfvtMVYtH91OR3dSyZvB3ICeOf13ai0i/z02iaF3PBXZjfVCk1v4qlLCYuBhDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T19:49:51.360113Z"},"content_sha256":"6bdb54176bd62ce4e727f8025b7282cb4814deaab6151e6c5a0a5f09640d8f92","schema_version":"1.0","event_id":"sha256:6bdb54176bd62ce4e727f8025b7282cb4814deaab6151e6c5a0a5f09640d8f92"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KRVLQG6RDUEUB63X2KMHIE53OD/bundle.json","state_url":"https://pith.science/pith/KRVLQG6RDUEUB63X2KMHIE53OD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KRVLQG6RDUEUB63X2KMHIE53OD/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":"2026-08-03T19:49:51Z","links":{"resolver":"https://pith.science/pith/KRVLQG6RDUEUB63X2KMHIE53OD","bundle":"https://pith.science/pith/KRVLQG6RDUEUB63X2KMHIE53OD/bundle.json","state":"https://pith.science/pith/KRVLQG6RDUEUB63X2KMHIE53OD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KRVLQG6RDUEUB63X2KMHIE53OD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:KRVLQG6RDUEUB63X2KMHIE53OD","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":"94efe8d293f13102e53faeb6c4e54d0138db84dd8f3c7763eea1d480100e0082","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-31T18:00:04Z","title_canon_sha256":"b8a86edb54eca96ec96d61a5d6adbb6a999a7efdc5345a65848fb60ef7c3b1cc"},"schema_version":"1.0","source":{"id":"2008.00010","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2008.00010","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"arxiv_version","alias_value":"2008.00010v1","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2008.00010","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"pith_short_12","alias_value":"KRVLQG6RDUEU","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"pith_short_16","alias_value":"KRVLQG6RDUEUB63X","created_at":"2026-07-05T01:33:41Z"},{"alias_kind":"pith_short_8","alias_value":"KRVLQG6R","created_at":"2026-07-05T01:33:41Z"}],"graph_snapshots":[{"event_id":"sha256:6bdb54176bd62ce4e727f8025b7282cb4814deaab6151e6c5a0a5f09640d8f92","target":"graph","created_at":"2026-07-05T01:33:41Z","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/2008.00010/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the design and implementation of a medium-band near-IR filter tailored for detecting low-mass stars and brown dwarfs from the summit of Maunakea. The W-band filter is centered at 1.45 micron with a bandpass width of 6%, designed to measure the depth of the H2O water absorption prominent in objects with spectral types of M6 and later. When combined with standard J- and H-band photometry, the W-band filter is designed to determine spectral types to $\\approx$1.4 subtypes for late-M and L dwarfs, largely independent of surface gravity and reddening. This filter's primary application is ","authors_text":"Katelyn N. Allers (Bucknell), Michael C. Liu (IfA/Hawaii)","cross_cats":["astro-ph.IM"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-31T18:00:04Z","title":"A Novel Survey for Young Substellar Objects with the W-band Filter. I. Filter Design and New Discoveries in Ophiuchus and Perseus"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2008.00010","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":"sha256:606b734c03377242e30a067f02f8ec37247c723871274c397c983c32daebd63d","target":"record","created_at":"2026-07-05T01:33:41Z","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":"94efe8d293f13102e53faeb6c4e54d0138db84dd8f3c7763eea1d480100e0082","cross_cats_sorted":["astro-ph.IM"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-07-31T18:00:04Z","title_canon_sha256":"b8a86edb54eca96ec96d61a5d6adbb6a999a7efdc5345a65848fb60ef7c3b1cc"},"schema_version":"1.0","source":{"id":"2008.00010","kind":"arxiv","version":1}},"canonical_sha256":"546ab81bd11d0940fb77d2987413bb70dbe6a501b1657788a5185deba67c90a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"546ab81bd11d0940fb77d2987413bb70dbe6a501b1657788a5185deba67c90a2","first_computed_at":"2026-07-05T01:33:41.940052Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:33:41.940052Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j5k0/QejVD7f//FlDWyReBC8e3M7UXUYttySeyHz35hkPOW34U+cTMsWGiQncxkBnSCF69ynU1tIfrBg3WGNAw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:33:41.940461Z","signed_message":"canonical_sha256_bytes"},"source_id":"2008.00010","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:606b734c03377242e30a067f02f8ec37247c723871274c397c983c32daebd63d","sha256:6bdb54176bd62ce4e727f8025b7282cb4814deaab6151e6c5a0a5f09640d8f92"],"state_sha256":"29a80a00de7a882c33c0ccf5181102adb09c4418f5f6fc1d49fd6d3b3ab2f66f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Iw//EFK/puIRYElDKDtCGxjINbxw6txdCnFNFYjwa9BFgQBSGbGGkMHcJRuq6bWoknLhoQbmwfvIhFLPN4FZAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T19:49:51.366458Z","bundle_sha256":"9d6c5f4121b8c8be27b9aaa2de2525439385e1476454cb4066c74fcb9b939eef"}}