{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:MR6QDS6KQQL4J45FPVDMGYF5ZV","short_pith_number":"pith:MR6QDS6K","canonical_record":{"source":{"id":"astro-ph/9609096","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-09-14T23:37:42Z","cross_cats_sorted":[],"title_canon_sha256":"0de4a7f12301dfe45eb740c537038f5cf60c9f1d1c71c4fa6420972f9726a07e","abstract_canon_sha256":"4ea93e243148053abef81a4697b629a55abc55f21418bf6daf568e209493560f"},"schema_version":"1.0"},"canonical_sha256":"647d01cbca8417c4f3a57d46c360bdcd71be53ef7cad11fcacb0ba2075bb9778","source":{"kind":"arxiv","id":"astro-ph/9609096","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9609096","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9609096v1","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9609096","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"pith_short_12","alias_value":"MR6QDS6KQQL4","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"pith_short_16","alias_value":"MR6QDS6KQQL4J45F","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"pith_short_8","alias_value":"MR6QDS6K","created_at":"2026-07-04T16:00:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:MR6QDS6KQQL4J45FPVDMGYF5ZV","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9609096","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-09-14T23:37:42Z","cross_cats_sorted":[],"title_canon_sha256":"0de4a7f12301dfe45eb740c537038f5cf60c9f1d1c71c4fa6420972f9726a07e","abstract_canon_sha256":"4ea93e243148053abef81a4697b629a55abc55f21418bf6daf568e209493560f"},"schema_version":"1.0"},"canonical_sha256":"647d01cbca8417c4f3a57d46c360bdcd71be53ef7cad11fcacb0ba2075bb9778","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T16:00:14.734273Z","signature_b64":"UHxRLORTZClnxXmyJefyO5N7S25qkSIjcNmP/+GziaTTd8pI3WGdxD1YuMFCdsevfstM9w1deldLOU5iGzHTCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"647d01cbca8417c4f3a57d46c360bdcd71be53ef7cad11fcacb0ba2075bb9778","last_reissued_at":"2026-07-04T16:00:14.733929Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T16:00:14.733929Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9609096","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":"2026-07-04T16:00:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E9Ew1qF7r6SqgyDU1GyMaI0p7jkkS9uM0o+fVsVFC6ufrYYMfeTETOtGkHoqCCLmofSXT5cJhlOmZn3NxaLnAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T08:26:35.184586Z"},"content_sha256":"f9d89d97c7afe8bc9e9426a906fc5bd55dbe01b4fa7250c0145860132840869d","schema_version":"1.0","event_id":"sha256:f9d89d97c7afe8bc9e9426a906fc5bd55dbe01b4fa7250c0145860132840869d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:MR6QDS6KQQL4J45FPVDMGYF5ZV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Interpretation of UV Absorption Lines in SN1006","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. J. S. Hamilton, C.-C. Wu, C. L. Sarazin, D. M. Crenshaw, R. A. Fesen","submitted_at":"1996-09-14T23:37:42Z","abstract_excerpt":"We present a theoretical interpretation of the broad silicon and iron UV absorption features observed with the Hubble Space Telescope in the spectrum of the Schweizer-Middleditch star behind the remnant of Supernova 1006. These features are caused by supernova ejecta in SN1006. We propose that the redshifted SiII2 1260 A feature consists of both unshocked and shocked SiII. The sharp red edge of the line at 7070 km/s indicates the position of the reverse shock, while its Gaussian blue edge reveals shocked Si with a mean velocity of 5050 km/s and a dispersion of 1240 km/s, implying a reverse sho"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9609096","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/astro-ph/9609096/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":"2026-07-04T16:00:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JgBlxERuDXnUgGzBDRQ5zzBNxU539fi3hP/ziUEgrgi3ZYPf1vexeoeKa3TCbNmAeDCCj/gFKTl8YKQ9Sv8MDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T08:26:35.185457Z"},"content_sha256":"f068b884eea70bb1e461c119ae3e9c530bdfdb6d352fd496d927e3f0875e2a8b","schema_version":"1.0","event_id":"sha256:f068b884eea70bb1e461c119ae3e9c530bdfdb6d352fd496d927e3f0875e2a8b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MR6QDS6KQQL4J45FPVDMGYF5ZV/bundle.json","state_url":"https://pith.science/pith/MR6QDS6KQQL4J45FPVDMGYF5ZV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MR6QDS6KQQL4J45FPVDMGYF5ZV/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":"2026-08-07T08:26:35Z","links":{"resolver":"https://pith.science/pith/MR6QDS6KQQL4J45FPVDMGYF5ZV","bundle":"https://pith.science/pith/MR6QDS6KQQL4J45FPVDMGYF5ZV/bundle.json","state":"https://pith.science/pith/MR6QDS6KQQL4J45FPVDMGYF5ZV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MR6QDS6KQQL4J45FPVDMGYF5ZV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:MR6QDS6KQQL4J45FPVDMGYF5ZV","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":"4ea93e243148053abef81a4697b629a55abc55f21418bf6daf568e209493560f","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-09-14T23:37:42Z","title_canon_sha256":"0de4a7f12301dfe45eb740c537038f5cf60c9f1d1c71c4fa6420972f9726a07e"},"schema_version":"1.0","source":{"id":"astro-ph/9609096","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9609096","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9609096v1","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9609096","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"pith_short_12","alias_value":"MR6QDS6KQQL4","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"pith_short_16","alias_value":"MR6QDS6KQQL4J45F","created_at":"2026-07-04T16:00:14Z"},{"alias_kind":"pith_short_8","alias_value":"MR6QDS6K","created_at":"2026-07-04T16:00:14Z"}],"graph_snapshots":[{"event_id":"sha256:f068b884eea70bb1e461c119ae3e9c530bdfdb6d352fd496d927e3f0875e2a8b","target":"graph","created_at":"2026-07-04T16:00:14Z","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/astro-ph/9609096/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a theoretical interpretation of the broad silicon and iron UV absorption features observed with the Hubble Space Telescope in the spectrum of the Schweizer-Middleditch star behind the remnant of Supernova 1006. These features are caused by supernova ejecta in SN1006. We propose that the redshifted SiII2 1260 A feature consists of both unshocked and shocked SiII. The sharp red edge of the line at 7070 km/s indicates the position of the reverse shock, while its Gaussian blue edge reveals shocked Si with a mean velocity of 5050 km/s and a dispersion of 1240 km/s, implying a reverse sho","authors_text":"A. J. S. Hamilton, C.-C. Wu, C. L. Sarazin, D. M. Crenshaw, R. A. Fesen","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1996-09-14T23:37:42Z","title":"Interpretation of UV Absorption Lines in SN1006"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9609096","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:f9d89d97c7afe8bc9e9426a906fc5bd55dbe01b4fa7250c0145860132840869d","target":"record","created_at":"2026-07-04T16:00:14Z","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":"4ea93e243148053abef81a4697b629a55abc55f21418bf6daf568e209493560f","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-09-14T23:37:42Z","title_canon_sha256":"0de4a7f12301dfe45eb740c537038f5cf60c9f1d1c71c4fa6420972f9726a07e"},"schema_version":"1.0","source":{"id":"astro-ph/9609096","kind":"arxiv","version":1}},"canonical_sha256":"647d01cbca8417c4f3a57d46c360bdcd71be53ef7cad11fcacb0ba2075bb9778","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"647d01cbca8417c4f3a57d46c360bdcd71be53ef7cad11fcacb0ba2075bb9778","first_computed_at":"2026-07-04T16:00:14.733929Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:00:14.733929Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UHxRLORTZClnxXmyJefyO5N7S25qkSIjcNmP/+GziaTTd8pI3WGdxD1YuMFCdsevfstM9w1deldLOU5iGzHTCg==","signature_status":"signed_v1","signed_at":"2026-07-04T16:00:14.734273Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9609096","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f9d89d97c7afe8bc9e9426a906fc5bd55dbe01b4fa7250c0145860132840869d","sha256:f068b884eea70bb1e461c119ae3e9c530bdfdb6d352fd496d927e3f0875e2a8b"],"state_sha256":"56d86ea3b50cf4435a87b2faa22155cf324e03f72799484978902e1c67700c72"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g42p1or3utK2Jn4CMIG2cXOGS43QTCpZysbHW013fgo/2GPvfOecE0fAvDE3Xg973DzndNeWkCWyPmmzfvdfCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T08:26:35.193476Z","bundle_sha256":"38c4073cf1ef101102af73ad258aeea0efaf58327938a86bd57412ea2948e23b"}}