{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:MFBU7MD5CK4W3QU6UKGLJ5WP76","short_pith_number":"pith:MFBU7MD5","canonical_record":{"source":{"id":"2402.17957","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-02-28T00:46:49Z","cross_cats_sorted":[],"title_canon_sha256":"446db5aa35637ce73ac9f8ed7e4a0505cf207b0eed6dfce2a27dba76ed91478c","abstract_canon_sha256":"8da4347884d245c7fcb121bee2f0f98b898ad2b41b28dd30de0f351016b2012b"},"schema_version":"1.0"},"canonical_sha256":"61434fb07d12b96dc29ea28cb4f6cfffbb96051f359ed7f2735439add25e59e0","source":{"kind":"arxiv","id":"2402.17957","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.17957","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"arxiv_version","alias_value":"2402.17957v1","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.17957","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"pith_short_12","alias_value":"MFBU7MD5CK4W","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"pith_short_16","alias_value":"MFBU7MD5CK4W3QU6","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"pith_short_8","alias_value":"MFBU7MD5","created_at":"2026-07-05T07:50:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:MFBU7MD5CK4W3QU6UKGLJ5WP76","target":"record","payload":{"canonical_record":{"source":{"id":"2402.17957","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-02-28T00:46:49Z","cross_cats_sorted":[],"title_canon_sha256":"446db5aa35637ce73ac9f8ed7e4a0505cf207b0eed6dfce2a27dba76ed91478c","abstract_canon_sha256":"8da4347884d245c7fcb121bee2f0f98b898ad2b41b28dd30de0f351016b2012b"},"schema_version":"1.0"},"canonical_sha256":"61434fb07d12b96dc29ea28cb4f6cfffbb96051f359ed7f2735439add25e59e0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:50:10.151909Z","signature_b64":"4sUnktQib/WYKxSeNEAgIS6ioqTewp5qhEFYgp7JNf+J6/5/mbbEy4Hd8QIK+jmG+Nk7APn7IwcZusRuIUzLAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"61434fb07d12b96dc29ea28cb4f6cfffbb96051f359ed7f2735439add25e59e0","last_reissued_at":"2026-07-05T07:50:10.151487Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:50:10.151487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.17957","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":"2026-07-05T07:50:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rxSMxRAkTcHirXLBJkrF8eCMfFBGegRSB25CvzRPE1w13fbl3EmDgIOlJ4FdG58zJ66pzfFnEBOWrv2KyVfTAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:12:04.676437Z"},"content_sha256":"d310f9c71d5e314e3b845bdea6e1c5f473001d6e8b3e35f9a11e656c06082dd3","schema_version":"1.0","event_id":"sha256:d310f9c71d5e314e3b845bdea6e1c5f473001d6e8b3e35f9a11e656c06082dd3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:MFBU7MD5CK4W3QU6UKGLJ5WP76","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Missing Titanium in the Asymmetric Supernova Remnant W49B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Brian J. Williams, John P. Hughes, Keiichi Maeda, Makoto Sawada, Toshiki Sato","submitted_at":"2024-02-28T00:46:49Z","abstract_excerpt":"The progenitor of the W49B supernova remnant is still under debate. One of the candidates is a jet-driven core-collapse supernova. In such a highly asymmetric explosion, a strong $\\alpha$-rich freezeout is expected in local high entropy regions, which should enrich elements synthesized by the capture of $\\alpha$-particles such as $^{44}$Ti and $^{48}$Cr (decaying to $^{44}$Ca and $^{48}$Ti, respectively). In the present work, in order to infer the progenitor of the W49B remnant, we constrain the amount of stable Ti ($^{48}$Ti) synthesized, using the {\\it Suzaku} observation. We found no firm e"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.17957","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/2402.17957/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":"2026-07-05T07:50:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sMCn5Zl/dCgdatGjGmlP0ymrORMoSQXUygsaCBXDoqeDJlYmhPOK/TnwxP8JB7p9DWVAK9lIoPjdN8s6j5BYAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T14:12:04.677341Z"},"content_sha256":"0f7afed38deb61cd011e40cd9f8547954efe8615560285032e472a530e9e8c29","schema_version":"1.0","event_id":"sha256:0f7afed38deb61cd011e40cd9f8547954efe8615560285032e472a530e9e8c29"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/bundle.json","state_url":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/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":"2026-08-14T14:12:04Z","links":{"resolver":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76","bundle":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/bundle.json","state":"https://pith.science/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MFBU7MD5CK4W3QU6UKGLJ5WP76/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:MFBU7MD5CK4W3QU6UKGLJ5WP76","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":"8da4347884d245c7fcb121bee2f0f98b898ad2b41b28dd30de0f351016b2012b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-02-28T00:46:49Z","title_canon_sha256":"446db5aa35637ce73ac9f8ed7e4a0505cf207b0eed6dfce2a27dba76ed91478c"},"schema_version":"1.0","source":{"id":"2402.17957","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.17957","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"arxiv_version","alias_value":"2402.17957v1","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.17957","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"pith_short_12","alias_value":"MFBU7MD5CK4W","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"pith_short_16","alias_value":"MFBU7MD5CK4W3QU6","created_at":"2026-07-05T07:50:10Z"},{"alias_kind":"pith_short_8","alias_value":"MFBU7MD5","created_at":"2026-07-05T07:50:10Z"}],"graph_snapshots":[{"event_id":"sha256:0f7afed38deb61cd011e40cd9f8547954efe8615560285032e472a530e9e8c29","target":"graph","created_at":"2026-07-05T07:50:10Z","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/2402.17957/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The progenitor of the W49B supernova remnant is still under debate. One of the candidates is a jet-driven core-collapse supernova. In such a highly asymmetric explosion, a strong $\\alpha$-rich freezeout is expected in local high entropy regions, which should enrich elements synthesized by the capture of $\\alpha$-particles such as $^{44}$Ti and $^{48}$Cr (decaying to $^{44}$Ca and $^{48}$Ti, respectively). In the present work, in order to infer the progenitor of the W49B remnant, we constrain the amount of stable Ti ($^{48}$Ti) synthesized, using the {\\it Suzaku} observation. We found no firm e","authors_text":"Brian J. Williams, John P. Hughes, Keiichi Maeda, Makoto Sawada, Toshiki Sato","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-02-28T00:46:49Z","title":"Missing Titanium in the Asymmetric Supernova Remnant W49B"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.17957","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:d310f9c71d5e314e3b845bdea6e1c5f473001d6e8b3e35f9a11e656c06082dd3","target":"record","created_at":"2026-07-05T07:50:10Z","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":"8da4347884d245c7fcb121bee2f0f98b898ad2b41b28dd30de0f351016b2012b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-02-28T00:46:49Z","title_canon_sha256":"446db5aa35637ce73ac9f8ed7e4a0505cf207b0eed6dfce2a27dba76ed91478c"},"schema_version":"1.0","source":{"id":"2402.17957","kind":"arxiv","version":1}},"canonical_sha256":"61434fb07d12b96dc29ea28cb4f6cfffbb96051f359ed7f2735439add25e59e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"61434fb07d12b96dc29ea28cb4f6cfffbb96051f359ed7f2735439add25e59e0","first_computed_at":"2026-07-05T07:50:10.151487Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:50:10.151487Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4sUnktQib/WYKxSeNEAgIS6ioqTewp5qhEFYgp7JNf+J6/5/mbbEy4Hd8QIK+jmG+Nk7APn7IwcZusRuIUzLAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T07:50:10.151909Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.17957","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d310f9c71d5e314e3b845bdea6e1c5f473001d6e8b3e35f9a11e656c06082dd3","sha256:0f7afed38deb61cd011e40cd9f8547954efe8615560285032e472a530e9e8c29"],"state_sha256":"6064739d7968cd847bf401ee1d5a6ee1d49a7320e16f3a64a80c53b6d0614dad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gwDqhzLrddOTncZ5Oq+CCisRBrSKcUkhccmDxHfHomn8eH+ZqyG1aN/jfa0plSYbRoEiftXdGpx9ziK0GVHVCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T14:12:04.683268Z","bundle_sha256":"a2178c5698a47cb42d49da6313f1654b5f3152184d9c0da49559f39b59281e54"}}