{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:FDI7VMO726XLQQLMLHPIO7BWSZ","short_pith_number":"pith:FDI7VMO7","canonical_record":{"source":{"id":"2011.11297","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-11-23T09:34:04Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"0605d5e89cf384308a09146d427221c9cd272e6083ca512c8dda3e584cb62672","abstract_canon_sha256":"67a739b4dfdf2e84618c114f2b2fb296c14be546132d20e1c3f3112946676184"},"schema_version":"1.0"},"canonical_sha256":"28d1fab1dfd7aeb8416c59de877c369641f68ea286321ba70657f76a8f518c6c","source":{"kind":"arxiv","id":"2011.11297","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.11297","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"arxiv_version","alias_value":"2011.11297v3","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.11297","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"pith_short_12","alias_value":"FDI7VMO726XL","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"pith_short_16","alias_value":"FDI7VMO726XLQQLM","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"pith_short_8","alias_value":"FDI7VMO7","created_at":"2026-07-05T02:30:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:FDI7VMO726XLQQLMLHPIO7BWSZ","target":"record","payload":{"canonical_record":{"source":{"id":"2011.11297","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-11-23T09:34:04Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"0605d5e89cf384308a09146d427221c9cd272e6083ca512c8dda3e584cb62672","abstract_canon_sha256":"67a739b4dfdf2e84618c114f2b2fb296c14be546132d20e1c3f3112946676184"},"schema_version":"1.0"},"canonical_sha256":"28d1fab1dfd7aeb8416c59de877c369641f68ea286321ba70657f76a8f518c6c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:30:42.967923Z","signature_b64":"371Idu6m2+/koO2cqXHqtsKeDump0CFdA9Qoc0Gb00DQx9AqPHFjg3oWUm0FejnwGNKSBukYljaOW5IJRmXJBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"28d1fab1dfd7aeb8416c59de877c369641f68ea286321ba70657f76a8f518c6c","last_reissued_at":"2026-07-05T02:30:42.967452Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:30:42.967452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2011.11297","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":"2026-07-05T02:30:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ISdT5hOpPZcBUDAD3u0Nxy64RGWd9zOXE00xyz/F8XrMYhGQ3BhnwS5EMbrriEY2GkHm5HUq3k4pt5acfotlAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T13:29:48.845068Z"},"content_sha256":"74031b1c58d16e9e2b8f711f67415f4e681b764df7ecf867efcd367003565a12","schema_version":"1.0","event_id":"sha256:74031b1c58d16e9e2b8f711f67415f4e681b764df7ecf867efcd367003565a12"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:FDI7VMO726XLQQLMLHPIO7BWSZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Low luminosity Type II supernovae III. SN 2018hwm, a faint event with an unusually long plateau","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"A. Pastorello, A. Reguitti, G. Pignata, H. Kuncarayakti, M. L. Pumo, N. Elias-Rosa, O. Rodriguez, P. A. Mazzali, S. Benetti, S. J. Prentice, S. Mattila, T. Reynolds","submitted_at":"2020-11-23T09:34:04Z","abstract_excerpt":"In this work, we present photometric and spectroscopic data of the low-luminosity Type IIP supernova (SN) 2018hwm. The object shows a faint ($M_r=-15$ mag) and very long ($\\sim$130 days) plateau, followed by a 2.7 mag drop in the $r$-band to the radioactive tail. The first spectrum shows a blue continuum with narrow Balmer lines, while during the plateau the spectra show numerous metal lines, all with strong and narrow P-Cygni profiles. The expansion velocities are low, in the 1000-1400 km s$^{-1}$ range. The nebular spectrum, dominated by H$\\alpha$ in emission, reveals weak emission from [O I"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.11297","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2011.11297/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":"2026-07-05T02:30:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vQImFdW2O9hm0pODbGUVscwsOkW2LxmO0HI82x7HOJSYSOdvoqKhOe3XMSCwJ/Pf625/9/xjUH+nDWWEteaDCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T13:29:48.845738Z"},"content_sha256":"6fd8e5d8c05544306418755941fbb465c4ad95e1d90a477d248b5986d37faca7","schema_version":"1.0","event_id":"sha256:6fd8e5d8c05544306418755941fbb465c4ad95e1d90a477d248b5986d37faca7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FDI7VMO726XLQQLMLHPIO7BWSZ/bundle.json","state_url":"https://pith.science/pith/FDI7VMO726XLQQLMLHPIO7BWSZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FDI7VMO726XLQQLMLHPIO7BWSZ/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":"2026-07-05T13:29:48Z","links":{"resolver":"https://pith.science/pith/FDI7VMO726XLQQLMLHPIO7BWSZ","bundle":"https://pith.science/pith/FDI7VMO726XLQQLMLHPIO7BWSZ/bundle.json","state":"https://pith.science/pith/FDI7VMO726XLQQLMLHPIO7BWSZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FDI7VMO726XLQQLMLHPIO7BWSZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:FDI7VMO726XLQQLMLHPIO7BWSZ","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":"67a739b4dfdf2e84618c114f2b2fb296c14be546132d20e1c3f3112946676184","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-11-23T09:34:04Z","title_canon_sha256":"0605d5e89cf384308a09146d427221c9cd272e6083ca512c8dda3e584cb62672"},"schema_version":"1.0","source":{"id":"2011.11297","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2011.11297","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"arxiv_version","alias_value":"2011.11297v3","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2011.11297","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"pith_short_12","alias_value":"FDI7VMO726XL","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"pith_short_16","alias_value":"FDI7VMO726XLQQLM","created_at":"2026-07-05T02:30:42Z"},{"alias_kind":"pith_short_8","alias_value":"FDI7VMO7","created_at":"2026-07-05T02:30:42Z"}],"graph_snapshots":[{"event_id":"sha256:6fd8e5d8c05544306418755941fbb465c4ad95e1d90a477d248b5986d37faca7","target":"graph","created_at":"2026-07-05T02:30:42Z","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/2011.11297/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this work, we present photometric and spectroscopic data of the low-luminosity Type IIP supernova (SN) 2018hwm. The object shows a faint ($M_r=-15$ mag) and very long ($\\sim$130 days) plateau, followed by a 2.7 mag drop in the $r$-band to the radioactive tail. The first spectrum shows a blue continuum with narrow Balmer lines, while during the plateau the spectra show numerous metal lines, all with strong and narrow P-Cygni profiles. The expansion velocities are low, in the 1000-1400 km s$^{-1}$ range. The nebular spectrum, dominated by H$\\alpha$ in emission, reveals weak emission from [O I","authors_text":"A. Pastorello, A. Reguitti, G. Pignata, H. Kuncarayakti, M. L. Pumo, N. Elias-Rosa, O. Rodriguez, P. A. Mazzali, S. Benetti, S. J. Prentice, S. Mattila, T. Reynolds","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-11-23T09:34:04Z","title":"Low luminosity Type II supernovae III. SN 2018hwm, a faint event with an unusually long plateau"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2011.11297","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":"sha256:74031b1c58d16e9e2b8f711f67415f4e681b764df7ecf867efcd367003565a12","target":"record","created_at":"2026-07-05T02:30:42Z","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":"67a739b4dfdf2e84618c114f2b2fb296c14be546132d20e1c3f3112946676184","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2020-11-23T09:34:04Z","title_canon_sha256":"0605d5e89cf384308a09146d427221c9cd272e6083ca512c8dda3e584cb62672"},"schema_version":"1.0","source":{"id":"2011.11297","kind":"arxiv","version":3}},"canonical_sha256":"28d1fab1dfd7aeb8416c59de877c369641f68ea286321ba70657f76a8f518c6c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"28d1fab1dfd7aeb8416c59de877c369641f68ea286321ba70657f76a8f518c6c","first_computed_at":"2026-07-05T02:30:42.967452Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:30:42.967452Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"371Idu6m2+/koO2cqXHqtsKeDump0CFdA9Qoc0Gb00DQx9AqPHFjg3oWUm0FejnwGNKSBukYljaOW5IJRmXJBw==","signature_status":"signed_v1","signed_at":"2026-07-05T02:30:42.967923Z","signed_message":"canonical_sha256_bytes"},"source_id":"2011.11297","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:74031b1c58d16e9e2b8f711f67415f4e681b764df7ecf867efcd367003565a12","sha256:6fd8e5d8c05544306418755941fbb465c4ad95e1d90a477d248b5986d37faca7"],"state_sha256":"802dd8b14c95a7edabb36768c08487abc55f010cef8644f31991b76f410c80f1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FwGHocqWioyUVql2EOUjb9TtqlRkvbEvpiOPjeCwm15orTt1Ei+AMQmDCtsqmBWWilwkROvckkSghbV3DAc3Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T13:29:48.849228Z","bundle_sha256":"7708acfce3c97b90fad91f74f6084de8fe77424e24f4a564b06db668ec92582e"}}