{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:SKSWVDYHC6KCYYT2ZTUEKGTRN4","short_pith_number":"pith:SKSWVDYH","canonical_record":{"source":{"id":"1910.01148","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-02T18:10:26Z","cross_cats_sorted":[],"title_canon_sha256":"9188a3006aad75b8a90bd08f934004c6ea5ddae80a12925e9d0648a2dc19313b","abstract_canon_sha256":"643cce66653594dff920dd64026aaa155d0d9be072f0432725b846a1d315254e"},"schema_version":"1.0"},"canonical_sha256":"92a56a8f0717942c627acce8451a716f1c98e8035e69064a24f0b07dbb734297","source":{"kind":"arxiv","id":"1910.01148","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.01148","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"arxiv_version","alias_value":"1910.01148v2","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.01148","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"pith_short_12","alias_value":"SKSWVDYHC6KC","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"pith_short_16","alias_value":"SKSWVDYHC6KCYYT2","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"pith_short_8","alias_value":"SKSWVDYH","created_at":"2026-07-05T00:12:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:SKSWVDYHC6KCYYT2ZTUEKGTRN4","target":"record","payload":{"canonical_record":{"source":{"id":"1910.01148","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-02T18:10:26Z","cross_cats_sorted":[],"title_canon_sha256":"9188a3006aad75b8a90bd08f934004c6ea5ddae80a12925e9d0648a2dc19313b","abstract_canon_sha256":"643cce66653594dff920dd64026aaa155d0d9be072f0432725b846a1d315254e"},"schema_version":"1.0"},"canonical_sha256":"92a56a8f0717942c627acce8451a716f1c98e8035e69064a24f0b07dbb734297","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:12:10.760063Z","signature_b64":"Zi90U3myX0wsLGrxIsjgfi8W0j0P9orrHZkAYxE8HEGQERxQeU68ZEFQ9Wnshh+2O+GN1YdbWH/sNn5xgxwmCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"92a56a8f0717942c627acce8451a716f1c98e8035e69064a24f0b07dbb734297","last_reissued_at":"2026-07-05T00:12:10.759680Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:12:10.759680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1910.01148","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":"2026-07-05T00:12:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Q8sQ5TCcqCkMCnXdL1tS5Cuo9O+xRFSKYNIQLmnYDdI1SUD2gHNG6vvOZtpvqUItpzHqJKj+kSVJYlURtyu6BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:13:55.551675Z"},"content_sha256":"43c2cc56ac49a9cd657eb4449ba18489d3ede10f4afa02e1f87aaac7a69bb098","schema_version":"1.0","event_id":"sha256:43c2cc56ac49a9cd657eb4449ba18489d3ede10f4afa02e1f87aaac7a69bb098"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:SKSWVDYHC6KCYYT2ZTUEKGTRN4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Choosing a Maximum Drift Rate in a SETI Search: Astrophysical Considerations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andrew P. Siemion, Jason T. Wright, J. Emilio Enriquez, Sofia Z. Sheikh","submitted_at":"2019-10-02T18:10:26Z","abstract_excerpt":"A radio transmitter which is accelerating with a non-zero radial component with respect to a receiver will produce a signal that appears to change its frequency over time. This effect, commonly produced in astrophysical situations where orbital and rotational motions are ubiquitous, is called a drift rate. In radio SETI (Search for Extraterrestrial Intelligence) research, it is unknown a priori which frequency a signal is being sent at, or even if there will be any drift rate at all besides motions within the solar system. Therefore a range of potential drift rates need to be individually sear"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.01148","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1910.01148/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T00:12:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DK3sfRBSEaHhAnj9jhptXe0vaJlnsw7QfcDEspas9xX6/RlJQ+rDyikFIzXWO996IIfWF3NF0gvdlY8LLoQcBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T08:13:55.552584Z"},"content_sha256":"b3e9746ee2e688fd145f0844046cd3403a4520c795e1b62d92bdf295dd1f35f4","schema_version":"1.0","event_id":"sha256:b3e9746ee2e688fd145f0844046cd3403a4520c795e1b62d92bdf295dd1f35f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SKSWVDYHC6KCYYT2ZTUEKGTRN4/bundle.json","state_url":"https://pith.science/pith/SKSWVDYHC6KCYYT2ZTUEKGTRN4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SKSWVDYHC6KCYYT2ZTUEKGTRN4/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":"2026-08-04T08:13:55Z","links":{"resolver":"https://pith.science/pith/SKSWVDYHC6KCYYT2ZTUEKGTRN4","bundle":"https://pith.science/pith/SKSWVDYHC6KCYYT2ZTUEKGTRN4/bundle.json","state":"https://pith.science/pith/SKSWVDYHC6KCYYT2ZTUEKGTRN4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SKSWVDYHC6KCYYT2ZTUEKGTRN4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:SKSWVDYHC6KCYYT2ZTUEKGTRN4","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":"643cce66653594dff920dd64026aaa155d0d9be072f0432725b846a1d315254e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-02T18:10:26Z","title_canon_sha256":"9188a3006aad75b8a90bd08f934004c6ea5ddae80a12925e9d0648a2dc19313b"},"schema_version":"1.0","source":{"id":"1910.01148","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1910.01148","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"arxiv_version","alias_value":"1910.01148v2","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.01148","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"pith_short_12","alias_value":"SKSWVDYHC6KC","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"pith_short_16","alias_value":"SKSWVDYHC6KCYYT2","created_at":"2026-07-05T00:12:10Z"},{"alias_kind":"pith_short_8","alias_value":"SKSWVDYH","created_at":"2026-07-05T00:12:10Z"}],"graph_snapshots":[{"event_id":"sha256:b3e9746ee2e688fd145f0844046cd3403a4520c795e1b62d92bdf295dd1f35f4","target":"graph","created_at":"2026-07-05T00:12:10Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1910.01148/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A radio transmitter which is accelerating with a non-zero radial component with respect to a receiver will produce a signal that appears to change its frequency over time. This effect, commonly produced in astrophysical situations where orbital and rotational motions are ubiquitous, is called a drift rate. In radio SETI (Search for Extraterrestrial Intelligence) research, it is unknown a priori which frequency a signal is being sent at, or even if there will be any drift rate at all besides motions within the solar system. Therefore a range of potential drift rates need to be individually sear","authors_text":"Andrew P. Siemion, Jason T. Wright, J. Emilio Enriquez, Sofia Z. Sheikh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-02T18:10:26Z","title":"Choosing a Maximum Drift Rate in a SETI Search: Astrophysical Considerations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.01148","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":"sha256:43c2cc56ac49a9cd657eb4449ba18489d3ede10f4afa02e1f87aaac7a69bb098","target":"record","created_at":"2026-07-05T00:12:10Z","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":"643cce66653594dff920dd64026aaa155d0d9be072f0432725b846a1d315254e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2019-10-02T18:10:26Z","title_canon_sha256":"9188a3006aad75b8a90bd08f934004c6ea5ddae80a12925e9d0648a2dc19313b"},"schema_version":"1.0","source":{"id":"1910.01148","kind":"arxiv","version":2}},"canonical_sha256":"92a56a8f0717942c627acce8451a716f1c98e8035e69064a24f0b07dbb734297","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"92a56a8f0717942c627acce8451a716f1c98e8035e69064a24f0b07dbb734297","first_computed_at":"2026-07-05T00:12:10.759680Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:12:10.759680Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Zi90U3myX0wsLGrxIsjgfi8W0j0P9orrHZkAYxE8HEGQERxQeU68ZEFQ9Wnshh+2O+GN1YdbWH/sNn5xgxwmCg==","signature_status":"signed_v1","signed_at":"2026-07-05T00:12:10.760063Z","signed_message":"canonical_sha256_bytes"},"source_id":"1910.01148","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:43c2cc56ac49a9cd657eb4449ba18489d3ede10f4afa02e1f87aaac7a69bb098","sha256:b3e9746ee2e688fd145f0844046cd3403a4520c795e1b62d92bdf295dd1f35f4"],"state_sha256":"bbe037561d11730fd2906b80fffed72dedb82e90dba8e91379131b43ce6c5b17"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rOqK6Gw17zkiMkGTS1aWwpV99EX4HLlzkAtYSV1TjQzwX0SRyXzCUsEMn2LiGOGJE0s+IuLWbt+eU+Y2x0mRAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T08:13:55.558658Z","bundle_sha256":"68faa37d8d4438b6f8775bececac29ac15b8ab0407ce2709223f8fc68cff8756"}}