{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:MQQSTVCK26ELCDWJGBN3SFFLTV","short_pith_number":"pith:MQQSTVCK","canonical_record":{"source":{"id":"1204.5012","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-23T09:47:22Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"d405454e95ae6b1703938196f41c30e3f4afe7188cad86e322134d220b4afc05","abstract_canon_sha256":"ab0f0f652a0592ec7e6ed06942f41532c796269986eeda29df0521e4a4046be9"},"schema_version":"1.0"},"canonical_sha256":"642129d44ad788b10ec9305bb914ab9d68d2855bea3d6861da3c712a209a9ceb","source":{"kind":"arxiv","id":"1204.5012","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.5012","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"arxiv_version","alias_value":"1204.5012v2","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.5012","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"pith_short_12","alias_value":"MQQSTVCK26EL","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MQQSTVCK26ELCDWJ","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MQQSTVCK","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:MQQSTVCK26ELCDWJGBN3SFFLTV","target":"record","payload":{"canonical_record":{"source":{"id":"1204.5012","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-23T09:47:22Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"d405454e95ae6b1703938196f41c30e3f4afe7188cad86e322134d220b4afc05","abstract_canon_sha256":"ab0f0f652a0592ec7e6ed06942f41532c796269986eeda29df0521e4a4046be9"},"schema_version":"1.0"},"canonical_sha256":"642129d44ad788b10ec9305bb914ab9d68d2855bea3d6861da3c712a209a9ceb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:47.471397Z","signature_b64":"yNhxNBHZXWgttiBEr8mLUkC3A1w8LbSupju0JXHsJ4tC1kMgIt9UPSbGLeF3WlUVRWmCOTeR4qjsekx0+ynYDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"642129d44ad788b10ec9305bb914ab9d68d2855bea3d6861da3c712a209a9ceb","last_reissued_at":"2026-05-18T01:57:47.470682Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:47.470682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.5012","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:57:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"feYqGcRF2oPW4lUpIvmZoW8BU3CVQQxmQJ2jDq1e7YnN5kkYC13EezshJW50lELh8WGnA7AYDhrTuhE5GH6tCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T00:48:46.316352Z"},"content_sha256":"dee89e57271e47d5c5603750bd47bd06bc512c78906b8f6ef98bb917075b5702","schema_version":"1.0","event_id":"sha256:dee89e57271e47d5c5603750bd47bd06bc512c78906b8f6ef98bb917075b5702"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:MQQSTVCK26ELCDWJGBN3SFFLTV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A seasonal cycle and an abrupt change in the variability characteristics of the intraday variable source S4 0954+65","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"A. Witzel, H. G. Song, J. A. Zensus, K. \\'E. Gab\\'anyi, L. Fuhrmann, N. Marchili, T. P. Krichbaum, X. Liu","submitted_at":"2012-04-23T09:47:22Z","abstract_excerpt":"The BLLac object S4 0954+65 is one of the main targets of the Urumqi monitoring program targeting IntraDay Variable (IDV) sources. Between August 2005 and December 2009, the source was included in 41 observing sessions, carried out at a frequency of 4.8 GHz. The time analysis of the collected light curves, performed by applying both a structure function analysis and a specifically developed wavelet-based algorithm, discovered an annual cycle in the variability timescales, suggesting that there is a fundamental contribution by interstellar scintillation to the IDV pattern of the source. The com"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5012","kind":"arxiv","version":2},"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":"2026-05-18T01:57:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Set5Xs/8eB/jHEV+KFA75cC+1LFBsZdHFOVkvo0OkuHbH7lc9qdv5UHje7Hq4pYiI0sKguIxIW+c9yo4IOGSDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T00:48:46.316708Z"},"content_sha256":"704d3a2188a1b30d3a5861ac167f4e9aaea9aa0956788196df41ccf5005223c8","schema_version":"1.0","event_id":"sha256:704d3a2188a1b30d3a5861ac167f4e9aaea9aa0956788196df41ccf5005223c8"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MQQSTVCK26ELCDWJGBN3SFFLTV/bundle.json","state_url":"https://pith.science/pith/MQQSTVCK26ELCDWJGBN3SFFLTV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MQQSTVCK26ELCDWJGBN3SFFLTV/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":"2026-06-01T00:48:46Z","links":{"resolver":"https://pith.science/pith/MQQSTVCK26ELCDWJGBN3SFFLTV","bundle":"https://pith.science/pith/MQQSTVCK26ELCDWJGBN3SFFLTV/bundle.json","state":"https://pith.science/pith/MQQSTVCK26ELCDWJGBN3SFFLTV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MQQSTVCK26ELCDWJGBN3SFFLTV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MQQSTVCK26ELCDWJGBN3SFFLTV","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":"ab0f0f652a0592ec7e6ed06942f41532c796269986eeda29df0521e4a4046be9","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-23T09:47:22Z","title_canon_sha256":"d405454e95ae6b1703938196f41c30e3f4afe7188cad86e322134d220b4afc05"},"schema_version":"1.0","source":{"id":"1204.5012","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.5012","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"arxiv_version","alias_value":"1204.5012v2","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.5012","created_at":"2026-05-18T01:57:47Z"},{"alias_kind":"pith_short_12","alias_value":"MQQSTVCK26EL","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MQQSTVCK26ELCDWJ","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MQQSTVCK","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:704d3a2188a1b30d3a5861ac167f4e9aaea9aa0956788196df41ccf5005223c8","target":"graph","created_at":"2026-05-18T01:57:47Z","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 BLLac object S4 0954+65 is one of the main targets of the Urumqi monitoring program targeting IntraDay Variable (IDV) sources. Between August 2005 and December 2009, the source was included in 41 observing sessions, carried out at a frequency of 4.8 GHz. The time analysis of the collected light curves, performed by applying both a structure function analysis and a specifically developed wavelet-based algorithm, discovered an annual cycle in the variability timescales, suggesting that there is a fundamental contribution by interstellar scintillation to the IDV pattern of the source. The com","authors_text":"A. Witzel, H. G. Song, J. A. Zensus, K. \\'E. Gab\\'anyi, L. Fuhrmann, N. Marchili, T. P. Krichbaum, X. Liu","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-23T09:47:22Z","title":"A seasonal cycle and an abrupt change in the variability characteristics of the intraday variable source S4 0954+65"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.5012","kind":"arxiv","version":2},"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:dee89e57271e47d5c5603750bd47bd06bc512c78906b8f6ef98bb917075b5702","target":"record","created_at":"2026-05-18T01:57:47Z","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":"ab0f0f652a0592ec7e6ed06942f41532c796269986eeda29df0521e4a4046be9","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-04-23T09:47:22Z","title_canon_sha256":"d405454e95ae6b1703938196f41c30e3f4afe7188cad86e322134d220b4afc05"},"schema_version":"1.0","source":{"id":"1204.5012","kind":"arxiv","version":2}},"canonical_sha256":"642129d44ad788b10ec9305bb914ab9d68d2855bea3d6861da3c712a209a9ceb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"642129d44ad788b10ec9305bb914ab9d68d2855bea3d6861da3c712a209a9ceb","first_computed_at":"2026-05-18T01:57:47.470682Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:47.470682Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yNhxNBHZXWgttiBEr8mLUkC3A1w8LbSupju0JXHsJ4tC1kMgIt9UPSbGLeF3WlUVRWmCOTeR4qjsekx0+ynYDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:47.471397Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.5012","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dee89e57271e47d5c5603750bd47bd06bc512c78906b8f6ef98bb917075b5702","sha256:704d3a2188a1b30d3a5861ac167f4e9aaea9aa0956788196df41ccf5005223c8"],"state_sha256":"8b612470671aec82cc89a778b859b13972e57efcd6c381d2454bc99213e0c040"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uK5R4j3FzEHPdfH+vNNd5PWudE2FBPwDQUClCx7w/5WtscjM3q0G2mxqcsyktcLtvlDkw4+quo1vGDo98yAbCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T00:48:46.318787Z","bundle_sha256":"1fe530b777ddfca3de71d2fb0698337970be73bc062b40060a61ad965bbd9375"}}