{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:P343RTLIBGZDADXKLGFOCQOW6Z","short_pith_number":"pith:P343RTLI","canonical_record":{"source":{"id":"1707.09935","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-07-31T16:12:10Z","cross_cats_sorted":[],"title_canon_sha256":"73ffec2bc29f613916cefc1f45a46b9b35d1f2ca4aef3888c9008be435962e47","abstract_canon_sha256":"a5bc0ed91a0b0cbc76da86a90bb2b54b7937c823886a06a7e2a020d8155e7736"},"schema_version":"1.0"},"canonical_sha256":"7ef9b8cd6809b2300eea598ae141d6f67dfaddf3c15c26482cfdc20b82c7f0b5","source":{"kind":"arxiv","id":"1707.09935","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.09935","created_at":"2026-05-18T00:24:16Z"},{"alias_kind":"arxiv_version","alias_value":"1707.09935v2","created_at":"2026-05-18T00:24:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.09935","created_at":"2026-05-18T00:24:16Z"},{"alias_kind":"pith_short_12","alias_value":"P343RTLIBGZD","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"P343RTLIBGZDADXK","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"P343RTLI","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:P343RTLIBGZDADXKLGFOCQOW6Z","target":"record","payload":{"canonical_record":{"source":{"id":"1707.09935","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-07-31T16:12:10Z","cross_cats_sorted":[],"title_canon_sha256":"73ffec2bc29f613916cefc1f45a46b9b35d1f2ca4aef3888c9008be435962e47","abstract_canon_sha256":"a5bc0ed91a0b0cbc76da86a90bb2b54b7937c823886a06a7e2a020d8155e7736"},"schema_version":"1.0"},"canonical_sha256":"7ef9b8cd6809b2300eea598ae141d6f67dfaddf3c15c26482cfdc20b82c7f0b5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:16.923799Z","signature_b64":"hkGt3yChSmvyxXqqSd7pk2YHPrfPX7mAoNwK+oucK9GjoBjDmVnUYnZBQLRa/vcbb2ioZusrtamMTGLh0NipDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7ef9b8cd6809b2300eea598ae141d6f67dfaddf3c15c26482cfdc20b82c7f0b5","last_reissued_at":"2026-05-18T00:24:16.923250Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:16.923250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.09935","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:24:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LiReuutGasdLdLt7bJFmKwUtduuOgqMaWpWxZf2tk01tvY79hUurYj2XJuhP9jABHv8gB7S0Dxd3y6GUnjtvBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T06:36:16.307704Z"},"content_sha256":"8f30b7a4eb4a64b43b4eaf77bc74a7e8ca88a3e5e048b7caad91dfd3bbb7cd17","schema_version":"1.0","event_id":"sha256:8f30b7a4eb4a64b43b4eaf77bc74a7e8ca88a3e5e048b7caad91dfd3bbb7cd17"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:P343RTLIBGZDADXKLGFOCQOW6Z","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"SN 2014C: VLBI Images of a Supernova Interacting with a Circumstellar Shell","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Kamble, A. Soderberg, D. Milisavljevic, Michael F. Bietenholz, R. Margutti","submitted_at":"2017-07-31T16:12:10Z","abstract_excerpt":"We report on VLBI measurements of supernova 2014C at several epochs between $t = 384$ and 1057 days after the explosion. SN 2014C was an unusual supernova that initially had Type Ib optical spectrum, but after $t = 130$ d it developed a Type IIn spectrum with prominent H$\\alpha$ lines, suggesting the onset of strong circumstellar interaction. Our first VLBI observation was at $t = 384$ d, and we find that the outer radius of SN 2014C was $(6.40 \\pm 0.26) \\times 10^{16}$ cm (for a distance of 15.1 Mpc), implying an average expansion velocity of $19300 \\pm 790$ \\kms\\ up to that time. At our last"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.09935","kind":"arxiv","version":2},"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":"2026-05-18T00:24:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jNQtzOxyW2VAv2d8vlPEqDHkPqOS5XKyogpy6+t9gJbCuLfYutxM3tHLwv2m285k3s+eHrINZbOdysupF/H6Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T06:36:16.308057Z"},"content_sha256":"40cb6f88dd1891a17ea6ba8d28d1fa3bf329104ac00d784da53be1022dc20e3f","schema_version":"1.0","event_id":"sha256:40cb6f88dd1891a17ea6ba8d28d1fa3bf329104ac00d784da53be1022dc20e3f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P343RTLIBGZDADXKLGFOCQOW6Z/bundle.json","state_url":"https://pith.science/pith/P343RTLIBGZDADXKLGFOCQOW6Z/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P343RTLIBGZDADXKLGFOCQOW6Z/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":"2026-05-21T06:36:16Z","links":{"resolver":"https://pith.science/pith/P343RTLIBGZDADXKLGFOCQOW6Z","bundle":"https://pith.science/pith/P343RTLIBGZDADXKLGFOCQOW6Z/bundle.json","state":"https://pith.science/pith/P343RTLIBGZDADXKLGFOCQOW6Z/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P343RTLIBGZDADXKLGFOCQOW6Z/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:P343RTLIBGZDADXKLGFOCQOW6Z","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":"a5bc0ed91a0b0cbc76da86a90bb2b54b7937c823886a06a7e2a020d8155e7736","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-07-31T16:12:10Z","title_canon_sha256":"73ffec2bc29f613916cefc1f45a46b9b35d1f2ca4aef3888c9008be435962e47"},"schema_version":"1.0","source":{"id":"1707.09935","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.09935","created_at":"2026-05-18T00:24:16Z"},{"alias_kind":"arxiv_version","alias_value":"1707.09935v2","created_at":"2026-05-18T00:24:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.09935","created_at":"2026-05-18T00:24:16Z"},{"alias_kind":"pith_short_12","alias_value":"P343RTLIBGZD","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"P343RTLIBGZDADXK","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"P343RTLI","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:40cb6f88dd1891a17ea6ba8d28d1fa3bf329104ac00d784da53be1022dc20e3f","target":"graph","created_at":"2026-05-18T00:24:16Z","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 on VLBI measurements of supernova 2014C at several epochs between $t = 384$ and 1057 days after the explosion. SN 2014C was an unusual supernova that initially had Type Ib optical spectrum, but after $t = 130$ d it developed a Type IIn spectrum with prominent H$\\alpha$ lines, suggesting the onset of strong circumstellar interaction. Our first VLBI observation was at $t = 384$ d, and we find that the outer radius of SN 2014C was $(6.40 \\pm 0.26) \\times 10^{16}$ cm (for a distance of 15.1 Mpc), implying an average expansion velocity of $19300 \\pm 790$ \\kms\\ up to that time. At our last","authors_text":"A. Kamble, A. Soderberg, D. Milisavljevic, Michael F. Bietenholz, R. Margutti","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-07-31T16:12:10Z","title":"SN 2014C: VLBI Images of a Supernova Interacting with a Circumstellar Shell"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.09935","kind":"arxiv","version":2},"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":"sha256:8f30b7a4eb4a64b43b4eaf77bc74a7e8ca88a3e5e048b7caad91dfd3bbb7cd17","target":"record","created_at":"2026-05-18T00:24:16Z","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":"a5bc0ed91a0b0cbc76da86a90bb2b54b7937c823886a06a7e2a020d8155e7736","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-07-31T16:12:10Z","title_canon_sha256":"73ffec2bc29f613916cefc1f45a46b9b35d1f2ca4aef3888c9008be435962e47"},"schema_version":"1.0","source":{"id":"1707.09935","kind":"arxiv","version":2}},"canonical_sha256":"7ef9b8cd6809b2300eea598ae141d6f67dfaddf3c15c26482cfdc20b82c7f0b5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7ef9b8cd6809b2300eea598ae141d6f67dfaddf3c15c26482cfdc20b82c7f0b5","first_computed_at":"2026-05-18T00:24:16.923250Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:16.923250Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hkGt3yChSmvyxXqqSd7pk2YHPrfPX7mAoNwK+oucK9GjoBjDmVnUYnZBQLRa/vcbb2ioZusrtamMTGLh0NipDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:16.923799Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.09935","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8f30b7a4eb4a64b43b4eaf77bc74a7e8ca88a3e5e048b7caad91dfd3bbb7cd17","sha256:40cb6f88dd1891a17ea6ba8d28d1fa3bf329104ac00d784da53be1022dc20e3f"],"state_sha256":"33949cdf5f0207a5129828e2976437fbcdb3bb40539349408b5830a65eb98c45"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Eu58At5MxUJx3fPqGNS5FTTuhDC+V+XBxKvCqzwN8iYFlIRhx/pIV6sZ9kASdWzdoQM7kPyXRXbqCgeFp3HQDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T06:36:16.310265Z","bundle_sha256":"89ef06ffbc43d18e1ca78b4cc9d71af86505514f86820c73409e2493db17d53a"}}