{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:JCXARVNCNQZDEDNGCCUAUIR5VS","short_pith_number":"pith:JCXARVNC","canonical_record":{"source":{"id":"1401.7556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T15:42:55Z","cross_cats_sorted":[],"title_canon_sha256":"a8fd854d56150e7b12a312192b91e3f433e68f17e5308a41d895ea6109b866c2","abstract_canon_sha256":"ebb30cd666ad356783194619ca29015b7e8d1c483887b9be6fc593ecc241c4b3"},"schema_version":"1.0"},"canonical_sha256":"48ae08d5a26c32320da610a80a223dac9d1956b4af50c547f8a3ec52cb52c3aa","source":{"kind":"arxiv","id":"1401.7556","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.7556","created_at":"2026-05-18T02:57:07Z"},{"alias_kind":"arxiv_version","alias_value":"1401.7556v1","created_at":"2026-05-18T02:57:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.7556","created_at":"2026-05-18T02:57:07Z"},{"alias_kind":"pith_short_12","alias_value":"JCXARVNCNQZD","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"JCXARVNCNQZDEDNG","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"JCXARVNC","created_at":"2026-05-18T12:28:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:JCXARVNCNQZDEDNGCCUAUIR5VS","target":"record","payload":{"canonical_record":{"source":{"id":"1401.7556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T15:42:55Z","cross_cats_sorted":[],"title_canon_sha256":"a8fd854d56150e7b12a312192b91e3f433e68f17e5308a41d895ea6109b866c2","abstract_canon_sha256":"ebb30cd666ad356783194619ca29015b7e8d1c483887b9be6fc593ecc241c4b3"},"schema_version":"1.0"},"canonical_sha256":"48ae08d5a26c32320da610a80a223dac9d1956b4af50c547f8a3ec52cb52c3aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:57:07.339196Z","signature_b64":"OEThRFWVKO1u9pqfL5Pxkdg9hSne081f2VUo8413Z4MNLcqMSuALEWo14qzHcdrUsI3i4x1ciMVAekmSZ15aDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48ae08d5a26c32320da610a80a223dac9d1956b4af50c547f8a3ec52cb52c3aa","last_reissued_at":"2026-05-18T02:57:07.338688Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:57:07.338688Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.7556","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":"2026-05-18T02:57:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"39TKBVYZubSN5XRb+fqWnH72A/mdPLG5cOL40W4Rfhmma6eXB/OCCPVHs+dbuNK52k5aCIbM8OiQSXJf2wjrBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:40:27.246228Z"},"content_sha256":"48938310b5bcc960ab1cb627ac42d15a5adac3df51b0889fe629172cc58e2f38","schema_version":"1.0","event_id":"sha256:48938310b5bcc960ab1cb627ac42d15a5adac3df51b0889fe629172cc58e2f38"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:JCXARVNCNQZDEDNGCCUAUIR5VS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"6.7GHz methanol maser variability in Cepheus A","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Bartkiewicz, M. Szymczak, P. Wolak","submitted_at":"2014-01-29T15:42:55Z","abstract_excerpt":"6.7 GHz methanol maser emission from the well-studied star-forming region Cepheus A was monitored with the Torun 32 m radio telescope. We found synchronized and anticorrelated changes of the flux density of the two blueshifted and one redshifted maser features for ~30 per cent of 1340 d of our observations. Two of those features exhibited high amplitude flux density variations with periods of 84-87 d over the last 290 d interval of the monitoring. We also report on two flares of emission at two different redshifted velocities completely covered during the whole outburst. These flare events las"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.7556","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":"2026-05-18T02:57:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0P7my4W6xjxxb/IbxzUnUFW+dLTbBnC4g00QeHpmGelaoOu1rpYfPkD/I4IDzISeJFaK2LtMWgZzHPR9tY3xCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T11:40:27.246969Z"},"content_sha256":"7e314de970220f03b59e39a7e443efb8836ec4c46f7c3a1ec39f2c8f874ee020","schema_version":"1.0","event_id":"sha256:7e314de970220f03b59e39a7e443efb8836ec4c46f7c3a1ec39f2c8f874ee020"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JCXARVNCNQZDEDNGCCUAUIR5VS/bundle.json","state_url":"https://pith.science/pith/JCXARVNCNQZDEDNGCCUAUIR5VS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JCXARVNCNQZDEDNGCCUAUIR5VS/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":"2026-05-30T11:40:27Z","links":{"resolver":"https://pith.science/pith/JCXARVNCNQZDEDNGCCUAUIR5VS","bundle":"https://pith.science/pith/JCXARVNCNQZDEDNGCCUAUIR5VS/bundle.json","state":"https://pith.science/pith/JCXARVNCNQZDEDNGCCUAUIR5VS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JCXARVNCNQZDEDNGCCUAUIR5VS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:JCXARVNCNQZDEDNGCCUAUIR5VS","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":"ebb30cd666ad356783194619ca29015b7e8d1c483887b9be6fc593ecc241c4b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T15:42:55Z","title_canon_sha256":"a8fd854d56150e7b12a312192b91e3f433e68f17e5308a41d895ea6109b866c2"},"schema_version":"1.0","source":{"id":"1401.7556","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.7556","created_at":"2026-05-18T02:57:07Z"},{"alias_kind":"arxiv_version","alias_value":"1401.7556v1","created_at":"2026-05-18T02:57:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.7556","created_at":"2026-05-18T02:57:07Z"},{"alias_kind":"pith_short_12","alias_value":"JCXARVNCNQZD","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_16","alias_value":"JCXARVNCNQZDEDNG","created_at":"2026-05-18T12:28:33Z"},{"alias_kind":"pith_short_8","alias_value":"JCXARVNC","created_at":"2026-05-18T12:28:33Z"}],"graph_snapshots":[{"event_id":"sha256:7e314de970220f03b59e39a7e443efb8836ec4c46f7c3a1ec39f2c8f874ee020","target":"graph","created_at":"2026-05-18T02:57:07Z","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":"6.7 GHz methanol maser emission from the well-studied star-forming region Cepheus A was monitored with the Torun 32 m radio telescope. We found synchronized and anticorrelated changes of the flux density of the two blueshifted and one redshifted maser features for ~30 per cent of 1340 d of our observations. Two of those features exhibited high amplitude flux density variations with periods of 84-87 d over the last 290 d interval of the monitoring. We also report on two flares of emission at two different redshifted velocities completely covered during the whole outburst. These flare events las","authors_text":"A. Bartkiewicz, M. Szymczak, P. Wolak","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T15:42:55Z","title":"6.7GHz methanol maser variability in Cepheus A"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.7556","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":"sha256:48938310b5bcc960ab1cb627ac42d15a5adac3df51b0889fe629172cc58e2f38","target":"record","created_at":"2026-05-18T02:57:07Z","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":"ebb30cd666ad356783194619ca29015b7e8d1c483887b9be6fc593ecc241c4b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T15:42:55Z","title_canon_sha256":"a8fd854d56150e7b12a312192b91e3f433e68f17e5308a41d895ea6109b866c2"},"schema_version":"1.0","source":{"id":"1401.7556","kind":"arxiv","version":1}},"canonical_sha256":"48ae08d5a26c32320da610a80a223dac9d1956b4af50c547f8a3ec52cb52c3aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48ae08d5a26c32320da610a80a223dac9d1956b4af50c547f8a3ec52cb52c3aa","first_computed_at":"2026-05-18T02:57:07.338688Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:57:07.338688Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OEThRFWVKO1u9pqfL5Pxkdg9hSne081f2VUo8413Z4MNLcqMSuALEWo14qzHcdrUsI3i4x1ciMVAekmSZ15aDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:57:07.339196Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.7556","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:48938310b5bcc960ab1cb627ac42d15a5adac3df51b0889fe629172cc58e2f38","sha256:7e314de970220f03b59e39a7e443efb8836ec4c46f7c3a1ec39f2c8f874ee020"],"state_sha256":"59e197469347fdd43f142c0557e034b47abde11e38b67389bb46d19e31fdad81"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gIrPwdBbNhMW85pSrVKboeO7/yykPws0Dn0V31jflKrrg8OYES+rkXFXStErYnyDaEbbV+kWAhPRhy8a7MNQDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T11:40:27.251231Z","bundle_sha256":"27bf63eed5fd312d30b4a163c5cfec4a34500201f9ccce9a0298ae0b085b39b8"}}