{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:M2FZBBQAXK6BONIIJRR7GIHKP3","short_pith_number":"pith:M2FZBBQA","canonical_record":{"source":{"id":"1601.02542","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-11T17:57:40Z","cross_cats_sorted":[],"title_canon_sha256":"f18183f50cdc3f16de48fa3553fc8caab094a0bbfb21f5a70715538b47a3c132","abstract_canon_sha256":"a86c7d2571074a49438a3158ee548473859c850fea7d5a1beac055a64a1ea770"},"schema_version":"1.0"},"canonical_sha256":"668b908600babc1735084c63f320ea7ee272f2b20719a7b52f1db780bb6aa599","source":{"kind":"arxiv","id":"1601.02542","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.02542","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"arxiv_version","alias_value":"1601.02542v1","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.02542","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"pith_short_12","alias_value":"M2FZBBQAXK6B","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"M2FZBBQAXK6BONII","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"M2FZBBQA","created_at":"2026-05-18T12:30:29Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:M2FZBBQAXK6BONIIJRR7GIHKP3","target":"record","payload":{"canonical_record":{"source":{"id":"1601.02542","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-11T17:57:40Z","cross_cats_sorted":[],"title_canon_sha256":"f18183f50cdc3f16de48fa3553fc8caab094a0bbfb21f5a70715538b47a3c132","abstract_canon_sha256":"a86c7d2571074a49438a3158ee548473859c850fea7d5a1beac055a64a1ea770"},"schema_version":"1.0"},"canonical_sha256":"668b908600babc1735084c63f320ea7ee272f2b20719a7b52f1db780bb6aa599","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:08.341675Z","signature_b64":"aTLN7CVByx1LWRPhPHqR8obP9JyIKXPU5Tq9cpdrtwa1rxdGV79ZkcSDbXYkINVgga1NLpklTARI4ppJX8kqDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"668b908600babc1735084c63f320ea7ee272f2b20719a7b52f1db780bb6aa599","last_reissued_at":"2026-05-18T01:20:08.341006Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:08.341006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.02542","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":"2026-05-18T01:20:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SBlGRGNBkYU48hzfh6r3LPpZUzHPiOVVL0HF565yg1JUExX7NLoZjz+j4mOxI8w9C3ho2UVt5/SYiOq6wXCgCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T10:26:54.170967Z"},"content_sha256":"db1ba6774f273f35b95f2b4d9eb8d2b62f200503c5fa85487a864d7e5d4b4b5e","schema_version":"1.0","event_id":"sha256:db1ba6774f273f35b95f2b4d9eb8d2b62f200503c5fa85487a864d7e5d4b4b5e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:M2FZBBQAXK6BONIIJRR7GIHKP3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Recurring X-ray Outbursts in the Supernova Impostor SN~2010da in NGC~300","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Dolphin, A. K. H. Kong, B. Binder, B. F. Williams, E. D. Skillman, P. P. Plucinsky, T. J. Gaetz","submitted_at":"2016-01-11T17:57:40Z","abstract_excerpt":"We present new observations of the \"supernova impostor\" SN 2010da using the Chandra X-ray Observatory and the Hubble Space Telescope. During the initial 2010 outburst, the 0.3-10 keV luminosity was observed by Swift to be $\\sim5\\times10^{38}$ erg s$^{-1}$ and faded by a factor of $\\sim$25 in a four month period. Our two new Chandra observations show a factor of $\\sim$10 increase in the 0.35-8 keV X-ray flux, from $\\sim$4$\\times10^{36}$ erg s$^{-1}$ to $4\\times10^{37}$ erg s$^{-1}$ in $\\sim$6 months, and the X-ray spectrum is consistent in both observations with a power law photon index of $\\Ga"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.02542","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":"2026-05-18T01:20:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QtAIfV0NC957PSoovRBV/+asnZ32RTzOCn6Spd7HgQigkzZb+Jw6B5FEOO+SEXu0qwOo0crk7oVuO240LQ5HAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T10:26:54.171310Z"},"content_sha256":"20b40983ad66c4ea632a794fd05f0b01eee43536f90adb3e0d9758a1e6efffc2","schema_version":"1.0","event_id":"sha256:20b40983ad66c4ea632a794fd05f0b01eee43536f90adb3e0d9758a1e6efffc2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M2FZBBQAXK6BONIIJRR7GIHKP3/bundle.json","state_url":"https://pith.science/pith/M2FZBBQAXK6BONIIJRR7GIHKP3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M2FZBBQAXK6BONIIJRR7GIHKP3/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":"2026-06-01T10:26:54Z","links":{"resolver":"https://pith.science/pith/M2FZBBQAXK6BONIIJRR7GIHKP3","bundle":"https://pith.science/pith/M2FZBBQAXK6BONIIJRR7GIHKP3/bundle.json","state":"https://pith.science/pith/M2FZBBQAXK6BONIIJRR7GIHKP3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M2FZBBQAXK6BONIIJRR7GIHKP3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:M2FZBBQAXK6BONIIJRR7GIHKP3","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":"a86c7d2571074a49438a3158ee548473859c850fea7d5a1beac055a64a1ea770","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-11T17:57:40Z","title_canon_sha256":"f18183f50cdc3f16de48fa3553fc8caab094a0bbfb21f5a70715538b47a3c132"},"schema_version":"1.0","source":{"id":"1601.02542","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.02542","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"arxiv_version","alias_value":"1601.02542v1","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.02542","created_at":"2026-05-18T01:20:08Z"},{"alias_kind":"pith_short_12","alias_value":"M2FZBBQAXK6B","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_16","alias_value":"M2FZBBQAXK6BONII","created_at":"2026-05-18T12:30:29Z"},{"alias_kind":"pith_short_8","alias_value":"M2FZBBQA","created_at":"2026-05-18T12:30:29Z"}],"graph_snapshots":[{"event_id":"sha256:20b40983ad66c4ea632a794fd05f0b01eee43536f90adb3e0d9758a1e6efffc2","target":"graph","created_at":"2026-05-18T01:20:08Z","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 present new observations of the \"supernova impostor\" SN 2010da using the Chandra X-ray Observatory and the Hubble Space Telescope. During the initial 2010 outburst, the 0.3-10 keV luminosity was observed by Swift to be $\\sim5\\times10^{38}$ erg s$^{-1}$ and faded by a factor of $\\sim$25 in a four month period. Our two new Chandra observations show a factor of $\\sim$10 increase in the 0.35-8 keV X-ray flux, from $\\sim$4$\\times10^{36}$ erg s$^{-1}$ to $4\\times10^{37}$ erg s$^{-1}$ in $\\sim$6 months, and the X-ray spectrum is consistent in both observations with a power law photon index of $\\Ga","authors_text":"A. Dolphin, A. K. H. Kong, B. Binder, B. F. Williams, E. D. Skillman, P. P. Plucinsky, T. J. Gaetz","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-11T17:57:40Z","title":"Recurring X-ray Outbursts in the Supernova Impostor SN~2010da in NGC~300"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.02542","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:db1ba6774f273f35b95f2b4d9eb8d2b62f200503c5fa85487a864d7e5d4b4b5e","target":"record","created_at":"2026-05-18T01:20:08Z","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":"a86c7d2571074a49438a3158ee548473859c850fea7d5a1beac055a64a1ea770","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-01-11T17:57:40Z","title_canon_sha256":"f18183f50cdc3f16de48fa3553fc8caab094a0bbfb21f5a70715538b47a3c132"},"schema_version":"1.0","source":{"id":"1601.02542","kind":"arxiv","version":1}},"canonical_sha256":"668b908600babc1735084c63f320ea7ee272f2b20719a7b52f1db780bb6aa599","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"668b908600babc1735084c63f320ea7ee272f2b20719a7b52f1db780bb6aa599","first_computed_at":"2026-05-18T01:20:08.341006Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:08.341006Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"aTLN7CVByx1LWRPhPHqR8obP9JyIKXPU5Tq9cpdrtwa1rxdGV79ZkcSDbXYkINVgga1NLpklTARI4ppJX8kqDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:08.341675Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.02542","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:db1ba6774f273f35b95f2b4d9eb8d2b62f200503c5fa85487a864d7e5d4b4b5e","sha256:20b40983ad66c4ea632a794fd05f0b01eee43536f90adb3e0d9758a1e6efffc2"],"state_sha256":"160fb8bbb26dcb5f4bde70e71b7b05bbb77de80d39b4d015c64a4f72be695e4d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eT+raWiJBMLKpAYrk3DohGTmuvueLajXEtIXZXVjMBmPxvXppBIsmP465WnVhQn/WQRUfzoWGOq2s8OS7sm2DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T10:26:54.173260Z","bundle_sha256":"9ba99d1f2efad9a294b159471948e5cccc2f1e8381e9358cc3712cac9dd429f0"}}