{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:FEBD5KZCTG7RFEBQSXDGPXMUSV","short_pith_number":"pith:FEBD5KZC","canonical_record":{"source":{"id":"1304.5033","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-18T06:51:56Z","cross_cats_sorted":[],"title_canon_sha256":"bc2c9d0899ce44e042188b5c6113c52173b9d196e7662124758651d49223e144","abstract_canon_sha256":"aea13262c36a07dbab63dbf6314a7f00f92fb9ab20b8f4deeb07998089de3c0a"},"schema_version":"1.0"},"canonical_sha256":"29023eab2299bf12903095c667dd94957e7f202f125f5dd0f4f61880ef55224e","source":{"kind":"arxiv","id":"1304.5033","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5033","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5033v1","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5033","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"pith_short_12","alias_value":"FEBD5KZCTG7R","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FEBD5KZCTG7RFEBQ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FEBD5KZC","created_at":"2026-05-18T12:27:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:FEBD5KZCTG7RFEBQSXDGPXMUSV","target":"record","payload":{"canonical_record":{"source":{"id":"1304.5033","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-18T06:51:56Z","cross_cats_sorted":[],"title_canon_sha256":"bc2c9d0899ce44e042188b5c6113c52173b9d196e7662124758651d49223e144","abstract_canon_sha256":"aea13262c36a07dbab63dbf6314a7f00f92fb9ab20b8f4deeb07998089de3c0a"},"schema_version":"1.0"},"canonical_sha256":"29023eab2299bf12903095c667dd94957e7f202f125f5dd0f4f61880ef55224e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:31.244483Z","signature_b64":"kVz4BljXn2YuFwn18sCLLp0d3iQuwltd8J2d4JQo3vNRs5ywQLOcqc3F8YKzrF2Ow34KD3NwgKaZmiNaUcrCDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"29023eab2299bf12903095c667dd94957e7f202f125f5dd0f4f61880ef55224e","last_reissued_at":"2026-05-18T01:50:31.243884Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:31.243884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1304.5033","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":"2026-05-18T01:50:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Yrolvzl/EgTDSAVDiwpZkLt2cUrU/Q/Bmcvyz7XhS/pRkdy8F8b2WoLx60h+mR0nlVnJRqA4xlnuLcKkDgV/Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:04:26.116121Z"},"content_sha256":"6789c4da343550d0d012f8a6ca61c4fbad3adcea81a985c45fb2ba27439de9dd","schema_version":"1.0","event_id":"sha256:6789c4da343550d0d012f8a6ca61c4fbad3adcea81a985c45fb2ba27439de9dd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:FEBD5KZCTG7RFEBQSXDGPXMUSV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"V2494 Cyg: A unique FU Ori type object in the Cygnus OB7 complex","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Alexei Moiseev, Chris J. Davis, Colin Aspin, Dirk Froebrich, Elena H. Nikogossian, Gerald H. Moriarty-Schieven, Michael D. Smith, Tae-Soo Pyo, Tigran Khanzadyan, Tigran Movsessian, Tigran Yu. Magakian, Tracy L. Beck","submitted_at":"2013-04-18T06:51:56Z","abstract_excerpt":"A photometric and spectral study of the variable star V2494 Cyg in the L 1003 dark cloud is presented. The brightness of the star, formerly known as HH 381 IRS, increased by 2.5 mag in R (probably in the 1980s) and since then has remained nearly constant. Since the brightness increase, V2494 Cyg has illuminated a bipolar cometary nebula. The stellar spectrum has several features typical of the FU Ori type, plus it exhibits very strong Halpha and forbidden emission lines with high-velocity components. These emission lines originate in the HH jet near the star. The kinematic age of the jet is co"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5033","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":"2026-05-18T01:50:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wgS9g/7ri6EykKNmkfT/frb/ssq8FvcRZAokUOfnzYeb1cDtjtGdL8HHbwxTL4O8l+fyc+4l1BJ5Bel1Xv+jCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T05:04:26.116911Z"},"content_sha256":"d395c13324c57cb3bbb4e89ba8ee5831b67e864bdf2dbdcdef17f3c673919d01","schema_version":"1.0","event_id":"sha256:d395c13324c57cb3bbb4e89ba8ee5831b67e864bdf2dbdcdef17f3c673919d01"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FEBD5KZCTG7RFEBQSXDGPXMUSV/bundle.json","state_url":"https://pith.science/pith/FEBD5KZCTG7RFEBQSXDGPXMUSV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FEBD5KZCTG7RFEBQSXDGPXMUSV/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":"2026-05-26T05:04:26Z","links":{"resolver":"https://pith.science/pith/FEBD5KZCTG7RFEBQSXDGPXMUSV","bundle":"https://pith.science/pith/FEBD5KZCTG7RFEBQSXDGPXMUSV/bundle.json","state":"https://pith.science/pith/FEBD5KZCTG7RFEBQSXDGPXMUSV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FEBD5KZCTG7RFEBQSXDGPXMUSV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:FEBD5KZCTG7RFEBQSXDGPXMUSV","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":"aea13262c36a07dbab63dbf6314a7f00f92fb9ab20b8f4deeb07998089de3c0a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-18T06:51:56Z","title_canon_sha256":"bc2c9d0899ce44e042188b5c6113c52173b9d196e7662124758651d49223e144"},"schema_version":"1.0","source":{"id":"1304.5033","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1304.5033","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"arxiv_version","alias_value":"1304.5033v1","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1304.5033","created_at":"2026-05-18T01:50:31Z"},{"alias_kind":"pith_short_12","alias_value":"FEBD5KZCTG7R","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_16","alias_value":"FEBD5KZCTG7RFEBQ","created_at":"2026-05-18T12:27:45Z"},{"alias_kind":"pith_short_8","alias_value":"FEBD5KZC","created_at":"2026-05-18T12:27:45Z"}],"graph_snapshots":[{"event_id":"sha256:d395c13324c57cb3bbb4e89ba8ee5831b67e864bdf2dbdcdef17f3c673919d01","target":"graph","created_at":"2026-05-18T01:50:31Z","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":"A photometric and spectral study of the variable star V2494 Cyg in the L 1003 dark cloud is presented. The brightness of the star, formerly known as HH 381 IRS, increased by 2.5 mag in R (probably in the 1980s) and since then has remained nearly constant. Since the brightness increase, V2494 Cyg has illuminated a bipolar cometary nebula. The stellar spectrum has several features typical of the FU Ori type, plus it exhibits very strong Halpha and forbidden emission lines with high-velocity components. These emission lines originate in the HH jet near the star. The kinematic age of the jet is co","authors_text":"Alexei Moiseev, Chris J. Davis, Colin Aspin, Dirk Froebrich, Elena H. Nikogossian, Gerald H. Moriarty-Schieven, Michael D. Smith, Tae-Soo Pyo, Tigran Khanzadyan, Tigran Movsessian, Tigran Yu. Magakian, Tracy L. Beck","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-18T06:51:56Z","title":"V2494 Cyg: A unique FU Ori type object in the Cygnus OB7 complex"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1304.5033","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":"sha256:6789c4da343550d0d012f8a6ca61c4fbad3adcea81a985c45fb2ba27439de9dd","target":"record","created_at":"2026-05-18T01:50:31Z","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":"aea13262c36a07dbab63dbf6314a7f00f92fb9ab20b8f4deeb07998089de3c0a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-04-18T06:51:56Z","title_canon_sha256":"bc2c9d0899ce44e042188b5c6113c52173b9d196e7662124758651d49223e144"},"schema_version":"1.0","source":{"id":"1304.5033","kind":"arxiv","version":1}},"canonical_sha256":"29023eab2299bf12903095c667dd94957e7f202f125f5dd0f4f61880ef55224e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"29023eab2299bf12903095c667dd94957e7f202f125f5dd0f4f61880ef55224e","first_computed_at":"2026-05-18T01:50:31.243884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:31.243884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kVz4BljXn2YuFwn18sCLLp0d3iQuwltd8J2d4JQo3vNRs5ywQLOcqc3F8YKzrF2Ow34KD3NwgKaZmiNaUcrCDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:31.244483Z","signed_message":"canonical_sha256_bytes"},"source_id":"1304.5033","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6789c4da343550d0d012f8a6ca61c4fbad3adcea81a985c45fb2ba27439de9dd","sha256:d395c13324c57cb3bbb4e89ba8ee5831b67e864bdf2dbdcdef17f3c673919d01"],"state_sha256":"d662493a70a2d630080c5e55f205d38bdca8a0cc8ee9d8e7550f562a6f54da54"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sILgLios2zzWxpfkfbWjU1dYxc3cnx/70/wxhVKiJOSZEfO9BpfouPuTY3OhWQq6eqKcqsValcvEYm+U5V6EBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T05:04:26.124380Z","bundle_sha256":"a2eb33fb6f6567500a303d38487b5de8a41d78fb2cb80b79050324023d3fdf5c"}}