{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:JIZ4M2BXH6BRP2ZAYUALOMR5JT","short_pith_number":"pith:JIZ4M2BX","canonical_record":{"source":{"id":"1901.01599","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-01-06T19:49:18Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"33c13c73eb64a53d0fce2a3703c48ada680a4f90de4b83e7e0a6aff4f5fad24e","abstract_canon_sha256":"8631b21359ba447b8cc369ff38bf30631d7511f95ba221406e1379b55033d234"},"schema_version":"1.0"},"canonical_sha256":"4a33c668373f8317eb20c500b7323d4ce8e168112a10377f229a345fe67b4003","source":{"kind":"arxiv","id":"1901.01599","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.01599","created_at":"2026-05-17T23:56:51Z"},{"alias_kind":"arxiv_version","alias_value":"1901.01599v1","created_at":"2026-05-17T23:56:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01599","created_at":"2026-05-17T23:56:51Z"},{"alias_kind":"pith_short_12","alias_value":"JIZ4M2BXH6BR","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"JIZ4M2BXH6BRP2ZA","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"JIZ4M2BX","created_at":"2026-05-18T12:33:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:JIZ4M2BXH6BRP2ZAYUALOMR5JT","target":"record","payload":{"canonical_record":{"source":{"id":"1901.01599","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-01-06T19:49:18Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"33c13c73eb64a53d0fce2a3703c48ada680a4f90de4b83e7e0a6aff4f5fad24e","abstract_canon_sha256":"8631b21359ba447b8cc369ff38bf30631d7511f95ba221406e1379b55033d234"},"schema_version":"1.0"},"canonical_sha256":"4a33c668373f8317eb20c500b7323d4ce8e168112a10377f229a345fe67b4003","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:51.643094Z","signature_b64":"24/UnjelfT6/5AemilrS09nyl1Asm8SadF44dcK+zo+xjfNcnHTLTdnC+Zj0Ye1i+DFIMebHn3/uFYTLtdmtAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4a33c668373f8317eb20c500b7323d4ce8e168112a10377f229a345fe67b4003","last_reissued_at":"2026-05-17T23:56:51.642676Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:51.642676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1901.01599","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":"2026-05-17T23:56:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WNpx17WRvdtqOAwwIoj7rInth/m/lFBs5yXaTllAWDMCblbYsyKk9oNyuYLd6774pVuIZJMDnQqGjulxxImxBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:20:20.069957Z"},"content_sha256":"a1765b31915e6ed4b9c15a702b21aedd19c27e077421ee97e5755c6ef6c80fa8","schema_version":"1.0","event_id":"sha256:a1765b31915e6ed4b9c15a702b21aedd19c27e077421ee97e5755c6ef6c80fa8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:JIZ4M2BXH6BRP2ZAYUALOMR5JT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"LSST Target of Opportunity proposal for locating a core collapse supernova in our galaxy triggered by a neutrino supernova alert","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"astro-ph.IM","authors_text":"An\\v{z}e Slosar, Christopher W. Walter, Daniel M. Scolnic","submitted_at":"2019-01-06T19:49:18Z","abstract_excerpt":"A few times a century, a core collapse supernova (CCSN) occurs in our galaxy. When such galactic CCSNe happen, over 99\\% of its gravitational binding energy is released in the form of neutrinos. Over a period of tens of seconds, a powerful neutrino flux is emitted from the collapsing star. When the exploding shock wave finally reaches the surface of the star, optical photons escaping the expanding stellar envelope leave the star and eventually arrive at Earth as a visible brightening. Crucially, although the neutrino signal is prompt, the time to the shock wave breakout can be minutes to many "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01599","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":"2026-05-17T23:56:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2oYXp5hNNZD4yMZgaPc54dGwEa+aibOzi+rlpAEbyNDRrsAR/qihYJg2sbLwobMtDojL+aiajETiNUMqTT+dCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T22:20:20.070638Z"},"content_sha256":"23fa16cfaec48840b926156dfce377ed68d16ee3b178feb67e6ee8d425195759","schema_version":"1.0","event_id":"sha256:23fa16cfaec48840b926156dfce377ed68d16ee3b178feb67e6ee8d425195759"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JIZ4M2BXH6BRP2ZAYUALOMR5JT/bundle.json","state_url":"https://pith.science/pith/JIZ4M2BXH6BRP2ZAYUALOMR5JT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JIZ4M2BXH6BRP2ZAYUALOMR5JT/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":"2026-05-26T22:20:20Z","links":{"resolver":"https://pith.science/pith/JIZ4M2BXH6BRP2ZAYUALOMR5JT","bundle":"https://pith.science/pith/JIZ4M2BXH6BRP2ZAYUALOMR5JT/bundle.json","state":"https://pith.science/pith/JIZ4M2BXH6BRP2ZAYUALOMR5JT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JIZ4M2BXH6BRP2ZAYUALOMR5JT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:JIZ4M2BXH6BRP2ZAYUALOMR5JT","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":"8631b21359ba447b8cc369ff38bf30631d7511f95ba221406e1379b55033d234","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-01-06T19:49:18Z","title_canon_sha256":"33c13c73eb64a53d0fce2a3703c48ada680a4f90de4b83e7e0a6aff4f5fad24e"},"schema_version":"1.0","source":{"id":"1901.01599","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.01599","created_at":"2026-05-17T23:56:51Z"},{"alias_kind":"arxiv_version","alias_value":"1901.01599v1","created_at":"2026-05-17T23:56:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.01599","created_at":"2026-05-17T23:56:51Z"},{"alias_kind":"pith_short_12","alias_value":"JIZ4M2BXH6BR","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"JIZ4M2BXH6BRP2ZA","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"JIZ4M2BX","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:23fa16cfaec48840b926156dfce377ed68d16ee3b178feb67e6ee8d425195759","target":"graph","created_at":"2026-05-17T23:56:51Z","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":"A few times a century, a core collapse supernova (CCSN) occurs in our galaxy. When such galactic CCSNe happen, over 99\\% of its gravitational binding energy is released in the form of neutrinos. Over a period of tens of seconds, a powerful neutrino flux is emitted from the collapsing star. When the exploding shock wave finally reaches the surface of the star, optical photons escaping the expanding stellar envelope leave the star and eventually arrive at Earth as a visible brightening. Crucially, although the neutrino signal is prompt, the time to the shock wave breakout can be minutes to many ","authors_text":"An\\v{z}e Slosar, Christopher W. Walter, Daniel M. Scolnic","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-01-06T19:49:18Z","title":"LSST Target of Opportunity proposal for locating a core collapse supernova in our galaxy triggered by a neutrino supernova alert"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.01599","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:a1765b31915e6ed4b9c15a702b21aedd19c27e077421ee97e5755c6ef6c80fa8","target":"record","created_at":"2026-05-17T23:56:51Z","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":"8631b21359ba447b8cc369ff38bf30631d7511f95ba221406e1379b55033d234","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-01-06T19:49:18Z","title_canon_sha256":"33c13c73eb64a53d0fce2a3703c48ada680a4f90de4b83e7e0a6aff4f5fad24e"},"schema_version":"1.0","source":{"id":"1901.01599","kind":"arxiv","version":1}},"canonical_sha256":"4a33c668373f8317eb20c500b7323d4ce8e168112a10377f229a345fe67b4003","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4a33c668373f8317eb20c500b7323d4ce8e168112a10377f229a345fe67b4003","first_computed_at":"2026-05-17T23:56:51.642676Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:56:51.642676Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"24/UnjelfT6/5AemilrS09nyl1Asm8SadF44dcK+zo+xjfNcnHTLTdnC+Zj0Ye1i+DFIMebHn3/uFYTLtdmtAA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:56:51.643094Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.01599","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1765b31915e6ed4b9c15a702b21aedd19c27e077421ee97e5755c6ef6c80fa8","sha256:23fa16cfaec48840b926156dfce377ed68d16ee3b178feb67e6ee8d425195759"],"state_sha256":"bf70d3f541a75d696041b9b2304bcd8e707dbe541a3ccaf47ae924b43bb4c49e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jf5sSPs+zm7nlpcBZ4TJIIMlX1nOjRxkG+FrfTwUYAXz1qZToMuYd1fwPOa1bjiMIQPdYV839t9UrqR96L/SAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T22:20:20.074968Z","bundle_sha256":"5fb0e25c03ef60e32f9980d48bbb950a7612b4c35c4a0ecccb48fcdf48cb7b4f"}}