{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:E4GF2CRWQUS6WNTAHHUOBFJHL7","short_pith_number":"pith:E4GF2CRW","canonical_record":{"source":{"id":"2005.12922","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-05-26T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"cf1e62cbbde11923289bbfc79d0c6445e81a9b890f99bcbe60708c8a8ed7e3fb","abstract_canon_sha256":"df1dfb42193cc7660eaf1cdb3630aefb5d8235272c2657122328112422de2c41"},"schema_version":"1.0"},"canonical_sha256":"270c5d0a368525eb366039e8e095275fc53325c14be9e1317966a4a3a26bdbc3","source":{"kind":"arxiv","id":"2005.12922","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.12922","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"arxiv_version","alias_value":"2005.12922v1","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.12922","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"pith_short_12","alias_value":"E4GF2CRWQUS6","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"pith_short_16","alias_value":"E4GF2CRWQUS6WNTA","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"pith_short_8","alias_value":"E4GF2CRW","created_at":"2026-07-05T01:33:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:E4GF2CRWQUS6WNTAHHUOBFJHL7","target":"record","payload":{"canonical_record":{"source":{"id":"2005.12922","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-05-26T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"cf1e62cbbde11923289bbfc79d0c6445e81a9b890f99bcbe60708c8a8ed7e3fb","abstract_canon_sha256":"df1dfb42193cc7660eaf1cdb3630aefb5d8235272c2657122328112422de2c41"},"schema_version":"1.0"},"canonical_sha256":"270c5d0a368525eb366039e8e095275fc53325c14be9e1317966a4a3a26bdbc3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:33:39.085036Z","signature_b64":"zo/CbVXq8Ejvxq/sX60RxiXkrzTBiuE/upx16OvStkBoV8tjti7MMEiGL6RT3T/4JuWwvO2hn9LymzRsLaL6Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"270c5d0a368525eb366039e8e095275fc53325c14be9e1317966a4a3a26bdbc3","last_reissued_at":"2026-07-05T01:33:39.084627Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:33:39.084627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2005.12922","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":"2026-07-05T01:33:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"y1VviMv7zWDf/ktBFhWP+DLZmoCFN7Y939m0dfH1n7oFnsRpLrBU4lmzwk3Rs3EzaYma4CpOrkE6X3M1WTBqDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T14:06:56.843202Z"},"content_sha256":"a7edba178e80667716b6d25d139e656bae582afc4d279304edda069ce8828835","schema_version":"1.0","event_id":"sha256:a7edba178e80667716b6d25d139e656bae582afc4d279304edda069ce8828835"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:E4GF2CRWQUS6WNTAHHUOBFJHL7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SN2019dge: a Helium-rich Ultra-Stripped Envelope Supernova","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Adam A. Miller, Andrew Fruchter, Anna Y. Q. Ho, Anthony L. Piro, Avishay Gal-Yam, Ben Rusholme, C. Fremling, Daniel A. Perley, David L. Shupe, David Rubin, Dmitry A. Duev, Eric C. Bellm, Frank J. Masci, George Helou, Jeffry Zolkower, Jesper Sollerman, Jim Fuller, Kishalay De, Maayane T. Soumagnac, Mansi M. Kasliwal, Matthew J. Graham, Michael Feeney, Rick Burruss, Roger Smith, Russ R. Laher, S. R. Kulkarni, Steve Schulze, Thomas Kupfer, V. Zach Golkhou, Yuhan Yao, Zhihui Li","submitted_at":"2020-05-26T18:00:01Z","abstract_excerpt":"We present observations of ZTF18abfcmjw (SN2019dge), a helium-rich supernova with a fast-evolving light curve indicating an extremely low ejecta mass ($\\approx 0.3\\,M_\\odot$) and low kinetic energy ($\\approx 1.2\\times 10^{50}\\,{\\rm erg}$). Early-time (<4 d after explosion) photometry reveal evidence of shock cooling from an extended helium-rich envelope of $\\sim0.1\\,M_\\odot$ located at $\\sim 3\\times 10^{12}\\,{\\rm cm}$ from the progenitor. Early-time He II line emission and subsequent spectra show signatures of interaction with helium-rich circumstellar material, which extends from $\\gtrsim 5\\t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.12922","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/2005.12922/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":"2026-07-05T01:33:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GWtrakEpGXmMrIhkveBheGaIhiMEJhD23Bo4xoJkFRJACkebtcnRd28D/uRSe9q+/rY+WmgwusDLNi5w1MIuCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T14:06:56.843868Z"},"content_sha256":"8c07860e32d528c0e4aaa5fa8bbb11d23194833aec1ea15a044bf9789c89ad91","schema_version":"1.0","event_id":"sha256:8c07860e32d528c0e4aaa5fa8bbb11d23194833aec1ea15a044bf9789c89ad91"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/E4GF2CRWQUS6WNTAHHUOBFJHL7/bundle.json","state_url":"https://pith.science/pith/E4GF2CRWQUS6WNTAHHUOBFJHL7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/E4GF2CRWQUS6WNTAHHUOBFJHL7/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":"2026-07-05T14:06:56Z","links":{"resolver":"https://pith.science/pith/E4GF2CRWQUS6WNTAHHUOBFJHL7","bundle":"https://pith.science/pith/E4GF2CRWQUS6WNTAHHUOBFJHL7/bundle.json","state":"https://pith.science/pith/E4GF2CRWQUS6WNTAHHUOBFJHL7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/E4GF2CRWQUS6WNTAHHUOBFJHL7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:E4GF2CRWQUS6WNTAHHUOBFJHL7","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":"df1dfb42193cc7660eaf1cdb3630aefb5d8235272c2657122328112422de2c41","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-05-26T18:00:01Z","title_canon_sha256":"cf1e62cbbde11923289bbfc79d0c6445e81a9b890f99bcbe60708c8a8ed7e3fb"},"schema_version":"1.0","source":{"id":"2005.12922","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2005.12922","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"arxiv_version","alias_value":"2005.12922v1","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2005.12922","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"pith_short_12","alias_value":"E4GF2CRWQUS6","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"pith_short_16","alias_value":"E4GF2CRWQUS6WNTA","created_at":"2026-07-05T01:33:39Z"},{"alias_kind":"pith_short_8","alias_value":"E4GF2CRW","created_at":"2026-07-05T01:33:39Z"}],"graph_snapshots":[{"event_id":"sha256:8c07860e32d528c0e4aaa5fa8bbb11d23194833aec1ea15a044bf9789c89ad91","target":"graph","created_at":"2026-07-05T01:33:39Z","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/2005.12922/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present observations of ZTF18abfcmjw (SN2019dge), a helium-rich supernova with a fast-evolving light curve indicating an extremely low ejecta mass ($\\approx 0.3\\,M_\\odot$) and low kinetic energy ($\\approx 1.2\\times 10^{50}\\,{\\rm erg}$). Early-time (<4 d after explosion) photometry reveal evidence of shock cooling from an extended helium-rich envelope of $\\sim0.1\\,M_\\odot$ located at $\\sim 3\\times 10^{12}\\,{\\rm cm}$ from the progenitor. Early-time He II line emission and subsequent spectra show signatures of interaction with helium-rich circumstellar material, which extends from $\\gtrsim 5\\t","authors_text":"Adam A. Miller, Andrew Fruchter, Anna Y. Q. Ho, Anthony L. Piro, Avishay Gal-Yam, Ben Rusholme, C. Fremling, Daniel A. Perley, David L. Shupe, David Rubin, Dmitry A. Duev, Eric C. Bellm, Frank J. Masci, George Helou, Jeffry Zolkower, Jesper Sollerman, Jim Fuller, Kishalay De, Maayane T. Soumagnac, Mansi M. Kasliwal, Matthew J. Graham, Michael Feeney, Rick Burruss, Roger Smith, Russ R. Laher, S. R. Kulkarni, Steve Schulze, Thomas Kupfer, V. Zach Golkhou, Yuhan Yao, Zhihui Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-05-26T18:00:01Z","title":"SN2019dge: a Helium-rich Ultra-Stripped Envelope Supernova"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2005.12922","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:a7edba178e80667716b6d25d139e656bae582afc4d279304edda069ce8828835","target":"record","created_at":"2026-07-05T01:33:39Z","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":"df1dfb42193cc7660eaf1cdb3630aefb5d8235272c2657122328112422de2c41","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-05-26T18:00:01Z","title_canon_sha256":"cf1e62cbbde11923289bbfc79d0c6445e81a9b890f99bcbe60708c8a8ed7e3fb"},"schema_version":"1.0","source":{"id":"2005.12922","kind":"arxiv","version":1}},"canonical_sha256":"270c5d0a368525eb366039e8e095275fc53325c14be9e1317966a4a3a26bdbc3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"270c5d0a368525eb366039e8e095275fc53325c14be9e1317966a4a3a26bdbc3","first_computed_at":"2026-07-05T01:33:39.084627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:33:39.084627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zo/CbVXq8Ejvxq/sX60RxiXkrzTBiuE/upx16OvStkBoV8tjti7MMEiGL6RT3T/4JuWwvO2hn9LymzRsLaL6Dg==","signature_status":"signed_v1","signed_at":"2026-07-05T01:33:39.085036Z","signed_message":"canonical_sha256_bytes"},"source_id":"2005.12922","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a7edba178e80667716b6d25d139e656bae582afc4d279304edda069ce8828835","sha256:8c07860e32d528c0e4aaa5fa8bbb11d23194833aec1ea15a044bf9789c89ad91"],"state_sha256":"e7dfc2c78ea0066066e7362f42b659a8a99c618533e4dc9d9365fdc87b865f41"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8ppfWUBdRFzzALJvl3UuJMTSjp0WKLTEO3TFFTgwoqe4BIHD8KDrvMOkYLgm6qiAKb1zkzUWgP24Yh65ox1SBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T14:06:56.847555Z","bundle_sha256":"1963ece1fa3e9efd2734c25710ecdd7a3dfb27520b1afe12e1d28ad0fe27bd64"}}