{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:MCT7DVFMCEVNXFGP3MDXUZARFV","short_pith_number":"pith:MCT7DVFM","canonical_record":{"source":{"id":"1402.1631","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-07T13:13:23Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"44bab233b60c52e42eb9892a68c1ab20f9480a1ac8a2f9b43c097b05f24a615e","abstract_canon_sha256":"4409456be58329b873399d3410a15d006f64c2638a5766140c9b6aaea7ddd97a"},"schema_version":"1.0"},"canonical_sha256":"60a7f1d4ac112adb94cfdb077a64112d48d165326678d8d810cf36862c74bf6a","source":{"kind":"arxiv","id":"1402.1631","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.1631","created_at":"2026-05-18T01:44:46Z"},{"alias_kind":"arxiv_version","alias_value":"1402.1631v3","created_at":"2026-05-18T01:44:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.1631","created_at":"2026-05-18T01:44:46Z"},{"alias_kind":"pith_short_12","alias_value":"MCT7DVFMCEVN","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"MCT7DVFMCEVNXFGP","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"MCT7DVFM","created_at":"2026-05-18T12:28:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:MCT7DVFMCEVNXFGP3MDXUZARFV","target":"record","payload":{"canonical_record":{"source":{"id":"1402.1631","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-07T13:13:23Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"44bab233b60c52e42eb9892a68c1ab20f9480a1ac8a2f9b43c097b05f24a615e","abstract_canon_sha256":"4409456be58329b873399d3410a15d006f64c2638a5766140c9b6aaea7ddd97a"},"schema_version":"1.0"},"canonical_sha256":"60a7f1d4ac112adb94cfdb077a64112d48d165326678d8d810cf36862c74bf6a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:46.473883Z","signature_b64":"xv8c+sHpKiLXd48cH+9KQciG1F94RBbecC6w0v2fu2JG9T3M5I4+1MviHS8dKohNgYnA95TzMmJn6G+uPEjfBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"60a7f1d4ac112adb94cfdb077a64112d48d165326678d8d810cf36862c74bf6a","last_reissued_at":"2026-05-18T01:44:46.473386Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:46.473386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1402.1631","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:44:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+EI6TGLZAFPp31O5CDUPQ3+BAJDGdgmIHPxmBnoGzkyM/ecZOr+78L9E6wjLpH+wwYgkn8FUvR7GLpqkh+RABw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:37:58.958553Z"},"content_sha256":"f891029a6fa55bb797adb72f38685555ac86bf0c763e309187bef52ccaf61fa5","schema_version":"1.0","event_id":"sha256:f891029a6fa55bb797adb72f38685555ac86bf0c763e309187bef52ccaf61fa5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:MCT7DVFMCEVNXFGP3MDXUZARFV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Selecting superluminous supernovae in faint galaxies from the first year of the Pan-STARRS1 Medium Deep Survey","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"A. Pastorello, A. Rest, C. Waters, C. W. Stubbs, D. J. Farrow, D. R. Young, D. Scolnic, D. Wright, E. A. Magnier, E. Berger, E. Kankare, F. Bresolin, H. Flewelling, J. L. Tonry, J. S. Morgan, K. C. Chambers, K. Huang, K. Smith, M. E. Huber, M. Fraser, M. McCrum, M. T. Botticella, N. Kaiser, N. Metcalfe, P. A. Price, P. W. Draper, R. Chornock, R. Jedicke, R. J. Foley, R. J. Wainscoat, R. Kotak, R. P. Kirshner, S. A. Rodney, S. J. Smartt, S. Mattila, S. Valenti, W. S. Burgett, W. Sweeney, Y. Urata","submitted_at":"2014-02-07T13:13:23Z","abstract_excerpt":"The Pan-STARRS1 (PS1) survey has obtained imaging in 5 bands (grizy_P1) over 10 Medium Deep Survey (MDS) fields covering a total of 70 square degrees. This paper describes the search for apparently hostless supernovae (SNe) within the first year of PS1 MDS data with an aim of discovering new superluminous supernovae (SLSNe). A total of 249 hostless transients were discovered down to a limiting magnitude of M_AB ~ 23.5, of which 76 were classified as Type Ia SNe. There were 57 SNe with complete light curves that are likely core-collapse SNe (CCSNe) or SLSNe and 12 of these have had spectra take"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1631","kind":"arxiv","version":3},"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":"2026-05-18T01:44:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YN5xwM1jJeYSHYMxSgY8ReOWWaN4zaEPsN9EL3Rb0rR5vy+CXj9uhlaVRvB9e0geVSp9nQKPij0+vPJa77tLBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:37:58.959065Z"},"content_sha256":"cfe012467dac53fd8efabd9cd545f2a081ddbb6bdb349f72ec2c53d2963db185","schema_version":"1.0","event_id":"sha256:cfe012467dac53fd8efabd9cd545f2a081ddbb6bdb349f72ec2c53d2963db185"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MCT7DVFMCEVNXFGP3MDXUZARFV/bundle.json","state_url":"https://pith.science/pith/MCT7DVFMCEVNXFGP3MDXUZARFV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MCT7DVFMCEVNXFGP3MDXUZARFV/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":"2026-05-27T12:37:58Z","links":{"resolver":"https://pith.science/pith/MCT7DVFMCEVNXFGP3MDXUZARFV","bundle":"https://pith.science/pith/MCT7DVFMCEVNXFGP3MDXUZARFV/bundle.json","state":"https://pith.science/pith/MCT7DVFMCEVNXFGP3MDXUZARFV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MCT7DVFMCEVNXFGP3MDXUZARFV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:MCT7DVFMCEVNXFGP3MDXUZARFV","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":"4409456be58329b873399d3410a15d006f64c2638a5766140c9b6aaea7ddd97a","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-07T13:13:23Z","title_canon_sha256":"44bab233b60c52e42eb9892a68c1ab20f9480a1ac8a2f9b43c097b05f24a615e"},"schema_version":"1.0","source":{"id":"1402.1631","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1402.1631","created_at":"2026-05-18T01:44:46Z"},{"alias_kind":"arxiv_version","alias_value":"1402.1631v3","created_at":"2026-05-18T01:44:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1402.1631","created_at":"2026-05-18T01:44:46Z"},{"alias_kind":"pith_short_12","alias_value":"MCT7DVFMCEVN","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"MCT7DVFMCEVNXFGP","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"MCT7DVFM","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:cfe012467dac53fd8efabd9cd545f2a081ddbb6bdb349f72ec2c53d2963db185","target":"graph","created_at":"2026-05-18T01:44:46Z","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 Pan-STARRS1 (PS1) survey has obtained imaging in 5 bands (grizy_P1) over 10 Medium Deep Survey (MDS) fields covering a total of 70 square degrees. This paper describes the search for apparently hostless supernovae (SNe) within the first year of PS1 MDS data with an aim of discovering new superluminous supernovae (SLSNe). A total of 249 hostless transients were discovered down to a limiting magnitude of M_AB ~ 23.5, of which 76 were classified as Type Ia SNe. There were 57 SNe with complete light curves that are likely core-collapse SNe (CCSNe) or SLSNe and 12 of these have had spectra take","authors_text":"A. Pastorello, A. Rest, C. Waters, C. W. Stubbs, D. J. Farrow, D. R. Young, D. Scolnic, D. Wright, E. A. Magnier, E. Berger, E. Kankare, F. Bresolin, H. Flewelling, J. L. Tonry, J. S. Morgan, K. C. Chambers, K. Huang, K. Smith, M. E. Huber, M. Fraser, M. McCrum, M. T. Botticella, N. Kaiser, N. Metcalfe, P. A. Price, P. W. Draper, R. Chornock, R. Jedicke, R. J. Foley, R. J. Wainscoat, R. Kotak, R. P. Kirshner, S. A. Rodney, S. J. Smartt, S. Mattila, S. Valenti, W. S. Burgett, W. Sweeney, Y. Urata","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-07T13:13:23Z","title":"Selecting superluminous supernovae in faint galaxies from the first year of the Pan-STARRS1 Medium Deep Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1402.1631","kind":"arxiv","version":3},"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:f891029a6fa55bb797adb72f38685555ac86bf0c763e309187bef52ccaf61fa5","target":"record","created_at":"2026-05-18T01:44:46Z","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":"4409456be58329b873399d3410a15d006f64c2638a5766140c9b6aaea7ddd97a","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-02-07T13:13:23Z","title_canon_sha256":"44bab233b60c52e42eb9892a68c1ab20f9480a1ac8a2f9b43c097b05f24a615e"},"schema_version":"1.0","source":{"id":"1402.1631","kind":"arxiv","version":3}},"canonical_sha256":"60a7f1d4ac112adb94cfdb077a64112d48d165326678d8d810cf36862c74bf6a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"60a7f1d4ac112adb94cfdb077a64112d48d165326678d8d810cf36862c74bf6a","first_computed_at":"2026-05-18T01:44:46.473386Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:44:46.473386Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xv8c+sHpKiLXd48cH+9KQciG1F94RBbecC6w0v2fu2JG9T3M5I4+1MviHS8dKohNgYnA95TzMmJn6G+uPEjfBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:44:46.473883Z","signed_message":"canonical_sha256_bytes"},"source_id":"1402.1631","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f891029a6fa55bb797adb72f38685555ac86bf0c763e309187bef52ccaf61fa5","sha256:cfe012467dac53fd8efabd9cd545f2a081ddbb6bdb349f72ec2c53d2963db185"],"state_sha256":"dfd76a836814b5d79310f6736414faff0aa171d96db1e04564f9b03ab931ae72"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yn8Hi0K3iysWXVWHfDbD2b81YffDb6wiFWKADinIdn0Y1pSNHuT8IrUbEfRSZgHBjmfHs+whVd5MwTw28qvACQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T12:37:58.961344Z","bundle_sha256":"923d2500928bc08e16bfa44dfc9d441ac88154698b10dec55ff84a29ec0865f3"}}