{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:MUS3M22YFU3SGZPVVAXGQMCFG5","short_pith_number":"pith:MUS3M22Y","canonical_record":{"source":{"id":"1802.01939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-06T13:35:34Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"233f036b95af112298ad646efbcd05eb301d878f23a6c62eba2b5a92a7f55a99","abstract_canon_sha256":"e7e7d8df7a835600256c000ae07e4613462a9e55901dfa65bd743e991380cc64"},"schema_version":"1.0"},"canonical_sha256":"6525b66b582d372365f5a82e683045375e46c9ad4435330dd7ce757c133e57bc","source":{"kind":"arxiv","id":"1802.01939","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.01939","created_at":"2026-05-18T00:21:20Z"},{"alias_kind":"arxiv_version","alias_value":"1802.01939v1","created_at":"2026-05-18T00:21:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.01939","created_at":"2026-05-18T00:21:20Z"},{"alias_kind":"pith_short_12","alias_value":"MUS3M22YFU3S","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MUS3M22YFU3SGZPV","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MUS3M22Y","created_at":"2026-05-18T12:32:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:MUS3M22YFU3SGZPVVAXGQMCFG5","target":"record","payload":{"canonical_record":{"source":{"id":"1802.01939","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-06T13:35:34Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"233f036b95af112298ad646efbcd05eb301d878f23a6c62eba2b5a92a7f55a99","abstract_canon_sha256":"e7e7d8df7a835600256c000ae07e4613462a9e55901dfa65bd743e991380cc64"},"schema_version":"1.0"},"canonical_sha256":"6525b66b582d372365f5a82e683045375e46c9ad4435330dd7ce757c133e57bc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:20.168007Z","signature_b64":"Vv+ovOufXyaPS+IXr9ZH4IobwE3hD3JK/f1nqS4AJw26RCVjGc0YHAJYam8qgIXfT6BMfQR+fOlkLR+dJ/lJBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6525b66b582d372365f5a82e683045375e46c9ad4435330dd7ce757c133e57bc","last_reissued_at":"2026-05-18T00:21:20.167537Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:20.167537Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1802.01939","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":"2026-05-18T00:21:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xHknYEdS/WwnxBsM0B8UiiRDOm8NQecdfUQJVvShb+ta/a0lcR8wMZMicCcv0yyC/IlYjbHphaec5Ur99qUXDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T19:24:00.292984Z"},"content_sha256":"9022caea9d5f9d7eb9ac20e17007c4b302fe26d925cc10818319e2365fb3299c","schema_version":"1.0","event_id":"sha256:9022caea9d5f9d7eb9ac20e17007c4b302fe26d925cc10818319e2365fb3299c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:MUS3M22YFU3SGZPVVAXGQMCFG5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The redshift of the BL Lac object TXS 0506+056","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Aldo Treves, Renato Falomo, Riccardo Scarpa, Simona Paiano","submitted_at":"2018-02-06T13:35:34Z","abstract_excerpt":"The bright BL Lac object TXS 0506+056 is a most likely counterpart of the IceCube neutrino event EHE 170922A. The lack of this redshift prevents a comprehensive understanding of the modeling of the source. We present high signal-to-noise optical spectroscopy, in the range 4100-9000 $\\textrm{\\AA}$, obtained at the 10.4m Gran Telescopio Canarias. The spectrum is characterized by a power law continuum and is marked by faint interstellar features. In the regions unaffected by these features, we found three very weak (EW $\\sim$ 0.1 $\\textrm{\\AA}$) emission lines that we identify with [O II] 3727 $\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01939","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":"2026-05-18T00:21:20Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SXJd0Tn+/Ff2WRMP1siYrHWoBcRBvo+TgsBqe48VAx7AM2KF5qTCwgywSwXBkE0uLNx0qXEJ6YT+nM4IpcNPBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T19:24:00.293403Z"},"content_sha256":"dde19a18edd25be785d9b9d79ac69ab3672299655a5888c5e6b184c48ce24606","schema_version":"1.0","event_id":"sha256:dde19a18edd25be785d9b9d79ac69ab3672299655a5888c5e6b184c48ce24606"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MUS3M22YFU3SGZPVVAXGQMCFG5/bundle.json","state_url":"https://pith.science/pith/MUS3M22YFU3SGZPVVAXGQMCFG5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MUS3M22YFU3SGZPVVAXGQMCFG5/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":"2026-05-30T19:24:00Z","links":{"resolver":"https://pith.science/pith/MUS3M22YFU3SGZPVVAXGQMCFG5","bundle":"https://pith.science/pith/MUS3M22YFU3SGZPVVAXGQMCFG5/bundle.json","state":"https://pith.science/pith/MUS3M22YFU3SGZPVVAXGQMCFG5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MUS3M22YFU3SGZPVVAXGQMCFG5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:MUS3M22YFU3SGZPVVAXGQMCFG5","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":"e7e7d8df7a835600256c000ae07e4613462a9e55901dfa65bd743e991380cc64","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-06T13:35:34Z","title_canon_sha256":"233f036b95af112298ad646efbcd05eb301d878f23a6c62eba2b5a92a7f55a99"},"schema_version":"1.0","source":{"id":"1802.01939","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.01939","created_at":"2026-05-18T00:21:20Z"},{"alias_kind":"arxiv_version","alias_value":"1802.01939v1","created_at":"2026-05-18T00:21:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.01939","created_at":"2026-05-18T00:21:20Z"},{"alias_kind":"pith_short_12","alias_value":"MUS3M22YFU3S","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_16","alias_value":"MUS3M22YFU3SGZPV","created_at":"2026-05-18T12:32:40Z"},{"alias_kind":"pith_short_8","alias_value":"MUS3M22Y","created_at":"2026-05-18T12:32:40Z"}],"graph_snapshots":[{"event_id":"sha256:dde19a18edd25be785d9b9d79ac69ab3672299655a5888c5e6b184c48ce24606","target":"graph","created_at":"2026-05-18T00:21:20Z","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":"The bright BL Lac object TXS 0506+056 is a most likely counterpart of the IceCube neutrino event EHE 170922A. The lack of this redshift prevents a comprehensive understanding of the modeling of the source. We present high signal-to-noise optical spectroscopy, in the range 4100-9000 $\\textrm{\\AA}$, obtained at the 10.4m Gran Telescopio Canarias. The spectrum is characterized by a power law continuum and is marked by faint interstellar features. In the regions unaffected by these features, we found three very weak (EW $\\sim$ 0.1 $\\textrm{\\AA}$) emission lines that we identify with [O II] 3727 $\\","authors_text":"Aldo Treves, Renato Falomo, Riccardo Scarpa, Simona Paiano","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-06T13:35:34Z","title":"The redshift of the BL Lac object TXS 0506+056"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.01939","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":"sha256:9022caea9d5f9d7eb9ac20e17007c4b302fe26d925cc10818319e2365fb3299c","target":"record","created_at":"2026-05-18T00:21:20Z","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":"e7e7d8df7a835600256c000ae07e4613462a9e55901dfa65bd743e991380cc64","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-02-06T13:35:34Z","title_canon_sha256":"233f036b95af112298ad646efbcd05eb301d878f23a6c62eba2b5a92a7f55a99"},"schema_version":"1.0","source":{"id":"1802.01939","kind":"arxiv","version":1}},"canonical_sha256":"6525b66b582d372365f5a82e683045375e46c9ad4435330dd7ce757c133e57bc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6525b66b582d372365f5a82e683045375e46c9ad4435330dd7ce757c133e57bc","first_computed_at":"2026-05-18T00:21:20.167537Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:20.167537Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Vv+ovOufXyaPS+IXr9ZH4IobwE3hD3JK/f1nqS4AJw26RCVjGc0YHAJYam8qgIXfT6BMfQR+fOlkLR+dJ/lJBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:20.168007Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.01939","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9022caea9d5f9d7eb9ac20e17007c4b302fe26d925cc10818319e2365fb3299c","sha256:dde19a18edd25be785d9b9d79ac69ab3672299655a5888c5e6b184c48ce24606"],"state_sha256":"70ea3d2158e2172cbf5fb9aa19249694fec4fed58e41d7415ba3abc752f9c714"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8AJHb9g9F3vLOGeK8NhGzWeCPtxKq3EESbTAQWMKzxRofdQozgPhxV607QqAK2Ogb0yg3szqaWmu25FPiTL2BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T19:24:00.298748Z","bundle_sha256":"95083bdfaa8454d8de2a3d57cad6b2451e9c9a5dc7e95298483ccaccc422d86c"}}