{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:OTPE2MMQJ3IQ2H2HMIVTIRY7UR","short_pith_number":"pith:OTPE2MMQ","canonical_record":{"source":{"id":"1409.2531","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-09-08T21:17:32Z","cross_cats_sorted":[],"title_canon_sha256":"411c012a10540db14e531e7e45b0b0bb47c4f4e22f6da4d914fb587ede740fcb","abstract_canon_sha256":"755e706d5d9cc5c22433e0044ad6e4c418fbb87fa664596eeff24056971bf886"},"schema_version":"1.0"},"canonical_sha256":"74de4d31904ed10d1f47622b34471fa468ad56fca97ff06f41ceb601c17a0ba2","source":{"kind":"arxiv","id":"1409.2531","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2531","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2531v1","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2531","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"pith_short_12","alias_value":"OTPE2MMQJ3IQ","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"OTPE2MMQJ3IQ2H2H","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"OTPE2MMQ","created_at":"2026-05-18T12:28:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:OTPE2MMQJ3IQ2H2HMIVTIRY7UR","target":"record","payload":{"canonical_record":{"source":{"id":"1409.2531","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-09-08T21:17:32Z","cross_cats_sorted":[],"title_canon_sha256":"411c012a10540db14e531e7e45b0b0bb47c4f4e22f6da4d914fb587ede740fcb","abstract_canon_sha256":"755e706d5d9cc5c22433e0044ad6e4c418fbb87fa664596eeff24056971bf886"},"schema_version":"1.0"},"canonical_sha256":"74de4d31904ed10d1f47622b34471fa468ad56fca97ff06f41ceb601c17a0ba2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:06.332796Z","signature_b64":"DadOnkyXeC5m6lpX9oShuPz6YQn1PIjqq11vQ748D//v8pIkPPhHeH74HyvMjwjPlTdh0lJwGRfRY3Bbq+YhBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74de4d31904ed10d1f47622b34471fa468ad56fca97ff06f41ceb601c17a0ba2","last_reissued_at":"2026-05-18T01:42:06.332064Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:06.332064Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1409.2531","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":"2026-05-18T01:42:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VfoU3iZkaEBgbES8AsI1y3o3WwVkw/k5kgcgutEzLSJzFfNaGufj3Y3ob1BG5G70I3yvbv2gBd6ZEEE1umocDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T03:34:51.296819Z"},"content_sha256":"1b88c90d270b1c42bff3334f198c2fb33525b4df28256adec3e7bb2133eee567","schema_version":"1.0","event_id":"sha256:1b88c90d270b1c42bff3334f198c2fb33525b4df28256adec3e7bb2133eee567"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:OTPE2MMQJ3IQ2H2HMIVTIRY7UR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Emerging Planetary Nebula CRL 618 and its Unsettled Central Star(s)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Raga, A. Riera, B. Balick, K. B. Kwitter, P. F. Vel\\'azquez","submitted_at":"2014-09-08T21:17:32Z","abstract_excerpt":"We report deep long-slit emission-line spectra, the line flux ratios, and Doppler profile shapes of various bright optical lines. The low-ionization lines (primarily [N I], [O I], [S II], and [N II]) originate in shocked knots, as reported by many previous observers. Dust-scattered lines of higher ionization are seen throughout the lobes but do not peak in the knots. Our analysis of these line profiles and the readily discernible stellar continuum shows that (1) the central star is an active symbiotic (whose spectrum resembles the central stars of highly bipolar and young PNe such as M2-9 and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2531","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":"2026-05-18T01:42:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UImY5SMnQSXc3ivWC7C06gpsumXTQloZbYU2o+fHBTsbYcJVAZXeePhatXGV2/uKHOjGPTPhQGC6QBEZucC5CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T03:34:51.297172Z"},"content_sha256":"c39162619c2e753444441cf381de8c0c0715a01ce3fe5a28af021b2d844deb74","schema_version":"1.0","event_id":"sha256:c39162619c2e753444441cf381de8c0c0715a01ce3fe5a28af021b2d844deb74"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OTPE2MMQJ3IQ2H2HMIVTIRY7UR/bundle.json","state_url":"https://pith.science/pith/OTPE2MMQJ3IQ2H2HMIVTIRY7UR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OTPE2MMQJ3IQ2H2HMIVTIRY7UR/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":"2026-05-21T03:34:51Z","links":{"resolver":"https://pith.science/pith/OTPE2MMQJ3IQ2H2HMIVTIRY7UR","bundle":"https://pith.science/pith/OTPE2MMQJ3IQ2H2HMIVTIRY7UR/bundle.json","state":"https://pith.science/pith/OTPE2MMQJ3IQ2H2HMIVTIRY7UR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OTPE2MMQJ3IQ2H2HMIVTIRY7UR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:OTPE2MMQJ3IQ2H2HMIVTIRY7UR","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":"755e706d5d9cc5c22433e0044ad6e4c418fbb87fa664596eeff24056971bf886","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-09-08T21:17:32Z","title_canon_sha256":"411c012a10540db14e531e7e45b0b0bb47c4f4e22f6da4d914fb587ede740fcb"},"schema_version":"1.0","source":{"id":"1409.2531","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1409.2531","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"arxiv_version","alias_value":"1409.2531v1","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1409.2531","created_at":"2026-05-18T01:42:06Z"},{"alias_kind":"pith_short_12","alias_value":"OTPE2MMQJ3IQ","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_16","alias_value":"OTPE2MMQJ3IQ2H2H","created_at":"2026-05-18T12:28:43Z"},{"alias_kind":"pith_short_8","alias_value":"OTPE2MMQ","created_at":"2026-05-18T12:28:43Z"}],"graph_snapshots":[{"event_id":"sha256:c39162619c2e753444441cf381de8c0c0715a01ce3fe5a28af021b2d844deb74","target":"graph","created_at":"2026-05-18T01:42:06Z","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 deep long-slit emission-line spectra, the line flux ratios, and Doppler profile shapes of various bright optical lines. The low-ionization lines (primarily [N I], [O I], [S II], and [N II]) originate in shocked knots, as reported by many previous observers. Dust-scattered lines of higher ionization are seen throughout the lobes but do not peak in the knots. Our analysis of these line profiles and the readily discernible stellar continuum shows that (1) the central star is an active symbiotic (whose spectrum resembles the central stars of highly bipolar and young PNe such as M2-9 and ","authors_text":"A. Raga, A. Riera, B. Balick, K. B. Kwitter, P. F. Vel\\'azquez","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-09-08T21:17:32Z","title":"The Emerging Planetary Nebula CRL 618 and its Unsettled Central Star(s)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1409.2531","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":"sha256:1b88c90d270b1c42bff3334f198c2fb33525b4df28256adec3e7bb2133eee567","target":"record","created_at":"2026-05-18T01:42:06Z","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":"755e706d5d9cc5c22433e0044ad6e4c418fbb87fa664596eeff24056971bf886","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-09-08T21:17:32Z","title_canon_sha256":"411c012a10540db14e531e7e45b0b0bb47c4f4e22f6da4d914fb587ede740fcb"},"schema_version":"1.0","source":{"id":"1409.2531","kind":"arxiv","version":1}},"canonical_sha256":"74de4d31904ed10d1f47622b34471fa468ad56fca97ff06f41ceb601c17a0ba2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74de4d31904ed10d1f47622b34471fa468ad56fca97ff06f41ceb601c17a0ba2","first_computed_at":"2026-05-18T01:42:06.332064Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:06.332064Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DadOnkyXeC5m6lpX9oShuPz6YQn1PIjqq11vQ748D//v8pIkPPhHeH74HyvMjwjPlTdh0lJwGRfRY3Bbq+YhBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:06.332796Z","signed_message":"canonical_sha256_bytes"},"source_id":"1409.2531","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1b88c90d270b1c42bff3334f198c2fb33525b4df28256adec3e7bb2133eee567","sha256:c39162619c2e753444441cf381de8c0c0715a01ce3fe5a28af021b2d844deb74"],"state_sha256":"67f0f4372890c5b39e687cf1cbea192403f2abed58231f6fdcae913085a17cc2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HH34El2kKbdYfTYRwUOozRAQB7jZIWTxZrVSqtjmYWAPX8eaUwGG72pJoeeDVIAGqRaMA5IIIoO5X2UgWCuIBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T03:34:51.299224Z","bundle_sha256":"c635cea7ecc4fa226ce6d4518df107df6e74e3c7ae1a8a9e75f49e0e66f2a6c9"}}