{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:DQIIJYO2YPQM4JJTXQKCKOQNOH","short_pith_number":"pith:DQIIJYO2","canonical_record":{"source":{"id":"0911.4295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-11-22T21:52:21Z","cross_cats_sorted":[],"title_canon_sha256":"03d09a0a35a75980a474843b448391b218d2c2ecba79673461bd531855344089","abstract_canon_sha256":"509b541fcbf2b409fc3f5d71174127db187d7f8823b2a6d13a0d2d6c479932ee"},"schema_version":"1.0"},"canonical_sha256":"1c1084e1dac3e0ce2533bc14253a0d71f150f7f40883ba1f8750b0bd2cdadd1d","source":{"kind":"arxiv","id":"0911.4295","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.4295","created_at":"2026-05-18T02:10:37Z"},{"alias_kind":"arxiv_version","alias_value":"0911.4295v1","created_at":"2026-05-18T02:10:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.4295","created_at":"2026-05-18T02:10:37Z"},{"alias_kind":"pith_short_12","alias_value":"DQIIJYO2YPQM","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"DQIIJYO2YPQM4JJT","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"DQIIJYO2","created_at":"2026-05-18T12:25:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:DQIIJYO2YPQM4JJTXQKCKOQNOH","target":"record","payload":{"canonical_record":{"source":{"id":"0911.4295","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-11-22T21:52:21Z","cross_cats_sorted":[],"title_canon_sha256":"03d09a0a35a75980a474843b448391b218d2c2ecba79673461bd531855344089","abstract_canon_sha256":"509b541fcbf2b409fc3f5d71174127db187d7f8823b2a6d13a0d2d6c479932ee"},"schema_version":"1.0"},"canonical_sha256":"1c1084e1dac3e0ce2533bc14253a0d71f150f7f40883ba1f8750b0bd2cdadd1d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:10:37.646658Z","signature_b64":"vXujkVvVJYid3xdXig2Rmwd4ifg3nuFlP0C/BkNvf39iwbDsgcrpAJOSu93dS8Bgh6W3se8PiU/zXUprqqk9DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1c1084e1dac3e0ce2533bc14253a0d71f150f7f40883ba1f8750b0bd2cdadd1d","last_reissued_at":"2026-05-18T02:10:37.645915Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:10:37.645915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0911.4295","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":"2026-05-18T02:10:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wIggO4suzbtEsyYxdLUWw5oP8k415LQswqtpAT5cZY5J4LXzHS0CkVAEXdIoN48j5pJ7xVOr1Fyx1EfZXcgVCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T14:13:24.494453Z"},"content_sha256":"9d47052e1c5f217177ef9923753ec3ba77ffac29405c6368a004d5ecfa9c7d3f","schema_version":"1.0","event_id":"sha256:9d47052e1c5f217177ef9923753ec3ba77ffac29405c6368a004d5ecfa9c7d3f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:DQIIJYO2YPQM4JJTXQKCKOQNOH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Travel Time Shifts due to Amplitude Modulation in Time-Distance Helioseismology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. G. Kosovichev, R. Nigam","submitted_at":"2009-11-22T21:52:21Z","abstract_excerpt":"Correct interpretation of acoustic travel times measured by time-distance helioseismology is essential to get an accurate understanding of the solar properties that are inferred from them. It has long been observed that sunspots suppress p-mode amplitude, but its implications on travel times has not been fully investigated so far. It has been found in test measurements using a 'masking' procedure, in which the solar Doppler signal in a localized quiet region of the Sun is artificially suppressed by a spatial function, and using numerical simulations that the amplitude modulations in combinatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.4295","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":"2026-05-18T02:10:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O6wqu/kf8sPuQFhW1dtJwEuoMUmYci8ceDecsTD57yy8158sDkj/leQEOWTGMN0+c9lWUKSBc6ofa7Mc4HW6Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T14:13:24.495141Z"},"content_sha256":"0c3af351ca2fc9a2c61c08806f7221b2f04daeff274d1d75f06c7d73b7a918dc","schema_version":"1.0","event_id":"sha256:0c3af351ca2fc9a2c61c08806f7221b2f04daeff274d1d75f06c7d73b7a918dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DQIIJYO2YPQM4JJTXQKCKOQNOH/bundle.json","state_url":"https://pith.science/pith/DQIIJYO2YPQM4JJTXQKCKOQNOH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DQIIJYO2YPQM4JJTXQKCKOQNOH/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":"2026-06-08T14:13:24Z","links":{"resolver":"https://pith.science/pith/DQIIJYO2YPQM4JJTXQKCKOQNOH","bundle":"https://pith.science/pith/DQIIJYO2YPQM4JJTXQKCKOQNOH/bundle.json","state":"https://pith.science/pith/DQIIJYO2YPQM4JJTXQKCKOQNOH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DQIIJYO2YPQM4JJTXQKCKOQNOH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:DQIIJYO2YPQM4JJTXQKCKOQNOH","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":"509b541fcbf2b409fc3f5d71174127db187d7f8823b2a6d13a0d2d6c479932ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-11-22T21:52:21Z","title_canon_sha256":"03d09a0a35a75980a474843b448391b218d2c2ecba79673461bd531855344089"},"schema_version":"1.0","source":{"id":"0911.4295","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0911.4295","created_at":"2026-05-18T02:10:37Z"},{"alias_kind":"arxiv_version","alias_value":"0911.4295v1","created_at":"2026-05-18T02:10:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.4295","created_at":"2026-05-18T02:10:37Z"},{"alias_kind":"pith_short_12","alias_value":"DQIIJYO2YPQM","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_16","alias_value":"DQIIJYO2YPQM4JJT","created_at":"2026-05-18T12:25:59Z"},{"alias_kind":"pith_short_8","alias_value":"DQIIJYO2","created_at":"2026-05-18T12:25:59Z"}],"graph_snapshots":[{"event_id":"sha256:0c3af351ca2fc9a2c61c08806f7221b2f04daeff274d1d75f06c7d73b7a918dc","target":"graph","created_at":"2026-05-18T02:10:37Z","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":"Correct interpretation of acoustic travel times measured by time-distance helioseismology is essential to get an accurate understanding of the solar properties that are inferred from them. It has long been observed that sunspots suppress p-mode amplitude, but its implications on travel times has not been fully investigated so far. It has been found in test measurements using a 'masking' procedure, in which the solar Doppler signal in a localized quiet region of the Sun is artificially suppressed by a spatial function, and using numerical simulations that the amplitude modulations in combinatio","authors_text":"A. G. Kosovichev, R. Nigam","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-11-22T21:52:21Z","title":"Travel Time Shifts due to Amplitude Modulation in Time-Distance Helioseismology"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.4295","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":"sha256:9d47052e1c5f217177ef9923753ec3ba77ffac29405c6368a004d5ecfa9c7d3f","target":"record","created_at":"2026-05-18T02:10:37Z","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":"509b541fcbf2b409fc3f5d71174127db187d7f8823b2a6d13a0d2d6c479932ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2009-11-22T21:52:21Z","title_canon_sha256":"03d09a0a35a75980a474843b448391b218d2c2ecba79673461bd531855344089"},"schema_version":"1.0","source":{"id":"0911.4295","kind":"arxiv","version":1}},"canonical_sha256":"1c1084e1dac3e0ce2533bc14253a0d71f150f7f40883ba1f8750b0bd2cdadd1d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1c1084e1dac3e0ce2533bc14253a0d71f150f7f40883ba1f8750b0bd2cdadd1d","first_computed_at":"2026-05-18T02:10:37.645915Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:10:37.645915Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vXujkVvVJYid3xdXig2Rmwd4ifg3nuFlP0C/BkNvf39iwbDsgcrpAJOSu93dS8Bgh6W3se8PiU/zXUprqqk9DA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:10:37.646658Z","signed_message":"canonical_sha256_bytes"},"source_id":"0911.4295","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d47052e1c5f217177ef9923753ec3ba77ffac29405c6368a004d5ecfa9c7d3f","sha256:0c3af351ca2fc9a2c61c08806f7221b2f04daeff274d1d75f06c7d73b7a918dc"],"state_sha256":"c8430f1e4a25be3fe39f04fe3c0c45a68429c97cd9fe8f0974b4f518098656fc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2ZgeYt1t+/nnAndVEOXYO5k735MTeP8SH9rNa0vWNweeUda4Z334NrX0NdD56ptE/0bRzuErfVnJI9vQhrctCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T14:13:24.498512Z","bundle_sha256":"095d0fd0bdd87c4cea7f591e569c38b603e840c156a98a86ad35b8ac152ded32"}}