{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2OXY7XWTCLRTB6QYZISFY4K6SL","short_pith_number":"pith:2OXY7XWT","canonical_record":{"source":{"id":"1302.0790","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T18:36:00Z","cross_cats_sorted":[],"title_canon_sha256":"8a69deffca6d40a4535310b4005fb06300140f9b90c7a594e728c41d104f6678","abstract_canon_sha256":"30f59032f71dcd51ff52babe9b3c7b89335770248967c8933cafa93da495db3d"},"schema_version":"1.0"},"canonical_sha256":"d3af8fded312e330fa18ca245c715e92cc2f3ca3f1f71425df4085673ccb2579","source":{"kind":"arxiv","id":"1302.0790","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.0790","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.0790v1","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.0790","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"pith_short_12","alias_value":"2OXY7XWTCLRT","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2OXY7XWTCLRTB6QY","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2OXY7XWT","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2OXY7XWTCLRTB6QYZISFY4K6SL","target":"record","payload":{"canonical_record":{"source":{"id":"1302.0790","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T18:36:00Z","cross_cats_sorted":[],"title_canon_sha256":"8a69deffca6d40a4535310b4005fb06300140f9b90c7a594e728c41d104f6678","abstract_canon_sha256":"30f59032f71dcd51ff52babe9b3c7b89335770248967c8933cafa93da495db3d"},"schema_version":"1.0"},"canonical_sha256":"d3af8fded312e330fa18ca245c715e92cc2f3ca3f1f71425df4085673ccb2579","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:50.677945Z","signature_b64":"HbBJdz/7K8/YYjKksqOTySclQyKUlu/XcrjcmjHPi07FlNNLNTDIw8SyBiU5IWzZU9JUiOPzl/DVj7yNDoCCAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3af8fded312e330fa18ca245c715e92cc2f3ca3f1f71425df4085673ccb2579","last_reissued_at":"2026-05-18T01:51:50.677544Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:50.677544Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1302.0790","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":"2026-05-18T01:51:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8GnCRsLaNgrwulhx4fJYac/+NFWj9kosSUz3k2aspSm6CzQavpiJFDx76OgtTs0yj/epYR1dy1WQPImfx/GHBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T07:33:18.481639Z"},"content_sha256":"403b676cb49629e3f9cad863ae29d8c2ee31a556211d7608f1b1d88796d2e329","schema_version":"1.0","event_id":"sha256:403b676cb49629e3f9cad863ae29d8c2ee31a556211d7608f1b1d88796d2e329"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2OXY7XWTCLRTB6QYZISFY4K6SL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time--distance inversions for horizontal and vertical flows on supergranular scales applied to MDI and HMI data","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"2), Academy of Sciences of the Czech Republic (2) Astronomical Institute, Charles University in Prague, Czech Republic (3) Max-Planck-Institut fuer Sonnensystemforschung, Germany), Hannah Schunker (3), Michal Svanda (1, Raymond Burston (3) ((1) Astronomical Institute","submitted_at":"2013-02-04T18:36:00Z","abstract_excerpt":"We study the possibility of consistent extension of MDI full-disc helioseismic campaigns with the growing data set of HMI observations. To do so, we down-sample and filter the HMI Dopplegrams so that the resulting spatial power spectrum is similar to the spatial power spectrum of MDI full-disc Dopplergrams. The set of co-spatial and co-temporal datacube pairs from both instruments containing no missing and no bad frames were processed using the same codes and inverted independently for all three components of the plasma flow in the near surface layers. The results from the two instruments are "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0790","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":"2026-05-18T01:51:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8R0D4VqSn6Rfa9s4EBNRX8vIO3t/GsL1YFkc1ugKOjTgSU8qNvNv5rMrkxsQNrxVDgBmiO8wQe/IZltY6BVgAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-31T07:33:18.482296Z"},"content_sha256":"3815bacd9067f8e3025f51f9d8a878198e869b47c42e5291e8f1d2447e314cb6","schema_version":"1.0","event_id":"sha256:3815bacd9067f8e3025f51f9d8a878198e869b47c42e5291e8f1d2447e314cb6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2OXY7XWTCLRTB6QYZISFY4K6SL/bundle.json","state_url":"https://pith.science/pith/2OXY7XWTCLRTB6QYZISFY4K6SL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2OXY7XWTCLRTB6QYZISFY4K6SL/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":"2026-05-31T07:33:18Z","links":{"resolver":"https://pith.science/pith/2OXY7XWTCLRTB6QYZISFY4K6SL","bundle":"https://pith.science/pith/2OXY7XWTCLRTB6QYZISFY4K6SL/bundle.json","state":"https://pith.science/pith/2OXY7XWTCLRTB6QYZISFY4K6SL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2OXY7XWTCLRTB6QYZISFY4K6SL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2OXY7XWTCLRTB6QYZISFY4K6SL","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":"30f59032f71dcd51ff52babe9b3c7b89335770248967c8933cafa93da495db3d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T18:36:00Z","title_canon_sha256":"8a69deffca6d40a4535310b4005fb06300140f9b90c7a594e728c41d104f6678"},"schema_version":"1.0","source":{"id":"1302.0790","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1302.0790","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"arxiv_version","alias_value":"1302.0790v1","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1302.0790","created_at":"2026-05-18T01:51:50Z"},{"alias_kind":"pith_short_12","alias_value":"2OXY7XWTCLRT","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"2OXY7XWTCLRTB6QY","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"2OXY7XWT","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:3815bacd9067f8e3025f51f9d8a878198e869b47c42e5291e8f1d2447e314cb6","target":"graph","created_at":"2026-05-18T01:51:50Z","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 study the possibility of consistent extension of MDI full-disc helioseismic campaigns with the growing data set of HMI observations. To do so, we down-sample and filter the HMI Dopplegrams so that the resulting spatial power spectrum is similar to the spatial power spectrum of MDI full-disc Dopplergrams. The set of co-spatial and co-temporal datacube pairs from both instruments containing no missing and no bad frames were processed using the same codes and inverted independently for all three components of the plasma flow in the near surface layers. The results from the two instruments are ","authors_text":"2), Academy of Sciences of the Czech Republic (2) Astronomical Institute, Charles University in Prague, Czech Republic (3) Max-Planck-Institut fuer Sonnensystemforschung, Germany), Hannah Schunker (3), Michal Svanda (1, Raymond Burston (3) ((1) Astronomical Institute","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T18:36:00Z","title":"Time--distance inversions for horizontal and vertical flows on supergranular scales applied to MDI and HMI data"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1302.0790","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":"sha256:403b676cb49629e3f9cad863ae29d8c2ee31a556211d7608f1b1d88796d2e329","target":"record","created_at":"2026-05-18T01:51:50Z","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":"30f59032f71dcd51ff52babe9b3c7b89335770248967c8933cafa93da495db3d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2013-02-04T18:36:00Z","title_canon_sha256":"8a69deffca6d40a4535310b4005fb06300140f9b90c7a594e728c41d104f6678"},"schema_version":"1.0","source":{"id":"1302.0790","kind":"arxiv","version":1}},"canonical_sha256":"d3af8fded312e330fa18ca245c715e92cc2f3ca3f1f71425df4085673ccb2579","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3af8fded312e330fa18ca245c715e92cc2f3ca3f1f71425df4085673ccb2579","first_computed_at":"2026-05-18T01:51:50.677544Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:50.677544Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HbBJdz/7K8/YYjKksqOTySclQyKUlu/XcrjcmjHPi07FlNNLNTDIw8SyBiU5IWzZU9JUiOPzl/DVj7yNDoCCAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:50.677945Z","signed_message":"canonical_sha256_bytes"},"source_id":"1302.0790","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:403b676cb49629e3f9cad863ae29d8c2ee31a556211d7608f1b1d88796d2e329","sha256:3815bacd9067f8e3025f51f9d8a878198e869b47c42e5291e8f1d2447e314cb6"],"state_sha256":"eb149d61175a34a546bdaf2a96a9a7c623836cd3ad44ea1fbd18da8eacb97e51"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AuaHHGdX/acg5vvwQH6YReBQG/HXP+mLnPM/lCso3xJi/NkuOttv4cpU7eIWPMeX8vzlejAbl4OD8aHy+3ZkBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-31T07:33:18.485752Z","bundle_sha256":"253fee0fbe1ba78bfc69052e68279612708e6c6f61134c478e5cc6ea8dba8a68"}}