{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZNXYC266JUJDHV7BCD45GQSSOI","short_pith_number":"pith:ZNXYC266","canonical_record":{"source":{"id":"1411.0991","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-04T18:14:32Z","cross_cats_sorted":[],"title_canon_sha256":"7630e381db0e24121ec48ac153f85ffd91e7f25fd8f97575812a181877bfd12e","abstract_canon_sha256":"eeb1303fb31d034860dd3dfb456f2fed151ce475e60f599c8c2115cd666fb71e"},"schema_version":"1.0"},"canonical_sha256":"cb6f816bde4d1233d7e110f9d34252723746e7352ff28d908e0a6b339456a64f","source":{"kind":"arxiv","id":"1411.0991","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.0991","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"arxiv_version","alias_value":"1411.0991v1","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.0991","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZNXYC266JUJD","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZNXYC266JUJDHV7B","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZNXYC266","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZNXYC266JUJDHV7BCD45GQSSOI","target":"record","payload":{"canonical_record":{"source":{"id":"1411.0991","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-04T18:14:32Z","cross_cats_sorted":[],"title_canon_sha256":"7630e381db0e24121ec48ac153f85ffd91e7f25fd8f97575812a181877bfd12e","abstract_canon_sha256":"eeb1303fb31d034860dd3dfb456f2fed151ce475e60f599c8c2115cd666fb71e"},"schema_version":"1.0"},"canonical_sha256":"cb6f816bde4d1233d7e110f9d34252723746e7352ff28d908e0a6b339456a64f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:41:35.252509Z","signature_b64":"4jV80oM6HjTWrEX8AuVwZ0M4IrC0ACDpiKKLLNoHo+pKrYAFmYnvjBSjlXGKZ1hWxB8ZboaoG+EQyvqz8ih+Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb6f816bde4d1233d7e110f9d34252723746e7352ff28d908e0a6b339456a64f","last_reissued_at":"2026-05-18T01:41:35.251848Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:41:35.251848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1411.0991","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":"2026-05-18T01:41:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hIO36Lb5r9gGLobvjrhtjO0MKeXDlrQU+vzmGK674b3QFKe8xqhzvfW5lxeUScnAXSeB2Fk9uyuBbu8ePJjRAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T23:38:19.280973Z"},"content_sha256":"3ade4552264bdf01bcc53c06427b06639eb8428d29fe66e899135b8374b29efb","schema_version":"1.0","event_id":"sha256:3ade4552264bdf01bcc53c06427b06639eb8428d29fe66e899135b8374b29efb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZNXYC266JUJDHV7BCD45GQSSOI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Swift/BAT detection of hard X-rays from Tycho's Supernova Remnant: Evidence for Titanium-44","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Segreto, C. Markwardt, D. Hartmann, E. Troja, G. Cusumano, N. Gehrels, S. Barthelmy, V. La Parola, W. Baumgartner","submitted_at":"2014-11-04T18:14:32Z","abstract_excerpt":"We report Swift/BAT survey observations of the Tycho's supernova remnant, performed over a period of 104 months since the mission's launch. The remnant is detected with high significance (>10 sigma) below 50 keV. We detect significant hard X-ray emission in the 60-85 keV band, above the continuum level predicted by a simple synchrotron model. The location of the observed excess is consistent with line emission from radioactive Titanium-44, so far reported only for Type II supernova explosions. We discuss the implications of these results in the context of the galactic supernova rate, and nucle"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.0991","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":"2026-05-18T01:41:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7/XdCDZlUgPBRlT3ERKHTsahH7lb7VF9l22LWK0raro+EtN2KPkTdrNxw5dlMtFPHUgLrd835c5K4FE0RY9ZBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T23:38:19.281437Z"},"content_sha256":"b1e61fdc0e0be117b49ab4bdcdcf79352ecc62b0eb3ec9f94aee3870114a57d4","schema_version":"1.0","event_id":"sha256:b1e61fdc0e0be117b49ab4bdcdcf79352ecc62b0eb3ec9f94aee3870114a57d4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZNXYC266JUJDHV7BCD45GQSSOI/bundle.json","state_url":"https://pith.science/pith/ZNXYC266JUJDHV7BCD45GQSSOI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZNXYC266JUJDHV7BCD45GQSSOI/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":"2026-05-22T23:38:19Z","links":{"resolver":"https://pith.science/pith/ZNXYC266JUJDHV7BCD45GQSSOI","bundle":"https://pith.science/pith/ZNXYC266JUJDHV7BCD45GQSSOI/bundle.json","state":"https://pith.science/pith/ZNXYC266JUJDHV7BCD45GQSSOI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZNXYC266JUJDHV7BCD45GQSSOI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZNXYC266JUJDHV7BCD45GQSSOI","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":"eeb1303fb31d034860dd3dfb456f2fed151ce475e60f599c8c2115cd666fb71e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-04T18:14:32Z","title_canon_sha256":"7630e381db0e24121ec48ac153f85ffd91e7f25fd8f97575812a181877bfd12e"},"schema_version":"1.0","source":{"id":"1411.0991","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.0991","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"arxiv_version","alias_value":"1411.0991v1","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.0991","created_at":"2026-05-18T01:41:35Z"},{"alias_kind":"pith_short_12","alias_value":"ZNXYC266JUJD","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZNXYC266JUJDHV7B","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZNXYC266","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:b1e61fdc0e0be117b49ab4bdcdcf79352ecc62b0eb3ec9f94aee3870114a57d4","target":"graph","created_at":"2026-05-18T01:41:35Z","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":"We report Swift/BAT survey observations of the Tycho's supernova remnant, performed over a period of 104 months since the mission's launch. The remnant is detected with high significance (>10 sigma) below 50 keV. We detect significant hard X-ray emission in the 60-85 keV band, above the continuum level predicted by a simple synchrotron model. The location of the observed excess is consistent with line emission from radioactive Titanium-44, so far reported only for Type II supernova explosions. We discuss the implications of these results in the context of the galactic supernova rate, and nucle","authors_text":"A. Segreto, C. Markwardt, D. Hartmann, E. Troja, G. Cusumano, N. Gehrels, S. Barthelmy, V. La Parola, W. Baumgartner","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-04T18:14:32Z","title":"Swift/BAT detection of hard X-rays from Tycho's Supernova Remnant: Evidence for Titanium-44"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.0991","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":"sha256:3ade4552264bdf01bcc53c06427b06639eb8428d29fe66e899135b8374b29efb","target":"record","created_at":"2026-05-18T01:41:35Z","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":"eeb1303fb31d034860dd3dfb456f2fed151ce475e60f599c8c2115cd666fb71e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2014-11-04T18:14:32Z","title_canon_sha256":"7630e381db0e24121ec48ac153f85ffd91e7f25fd8f97575812a181877bfd12e"},"schema_version":"1.0","source":{"id":"1411.0991","kind":"arxiv","version":1}},"canonical_sha256":"cb6f816bde4d1233d7e110f9d34252723746e7352ff28d908e0a6b339456a64f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cb6f816bde4d1233d7e110f9d34252723746e7352ff28d908e0a6b339456a64f","first_computed_at":"2026-05-18T01:41:35.251848Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:41:35.251848Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4jV80oM6HjTWrEX8AuVwZ0M4IrC0ACDpiKKLLNoHo+pKrYAFmYnvjBSjlXGKZ1hWxB8ZboaoG+EQyvqz8ih+Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:41:35.252509Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.0991","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3ade4552264bdf01bcc53c06427b06639eb8428d29fe66e899135b8374b29efb","sha256:b1e61fdc0e0be117b49ab4bdcdcf79352ecc62b0eb3ec9f94aee3870114a57d4"],"state_sha256":"6a263fb3de1caad963e6239e4cf1852a36dc20b1031d280bd470712fa48be248"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FpyU7N/v594YwDAudn/dzAek9MxT12wgr25wvTDMv1+TIKn+cIls0eeYsGTUcFvbO1QCXwyX3wJKRYcoQAw9BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T23:38:19.285487Z","bundle_sha256":"7b9d96674e737c2b7a609c1f7bb5fdd0547e7dc036bad376786f13c33aca6ba9"}}