{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QPB7BMFTCBSYSW2CXUCGLSIT3U","short_pith_number":"pith:QPB7BMFT","canonical_record":{"source":{"id":"2203.09668","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-03-18T00:31:02Z","cross_cats_sorted":[],"title_canon_sha256":"bebf8523478b64294179082d47fc9b7a64930a7d8f19d7e43c7943ceb27de16f","abstract_canon_sha256":"ef9c0054e429bc525a836d85c4fd84c284d9c235d28419f38e4c681d32ad1cdc"},"schema_version":"1.0"},"canonical_sha256":"83c3f0b0b31065895b42bd0465c913dd3dd6019c573f0ba34a872403daf3b779","source":{"kind":"arxiv","id":"2203.09668","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.09668","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"arxiv_version","alias_value":"2203.09668v1","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.09668","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"pith_short_12","alias_value":"QPB7BMFTCBSY","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"pith_short_16","alias_value":"QPB7BMFTCBSYSW2C","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"pith_short_8","alias_value":"QPB7BMFT","created_at":"2026-07-05T04:47:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QPB7BMFTCBSYSW2CXUCGLSIT3U","target":"record","payload":{"canonical_record":{"source":{"id":"2203.09668","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-03-18T00:31:02Z","cross_cats_sorted":[],"title_canon_sha256":"bebf8523478b64294179082d47fc9b7a64930a7d8f19d7e43c7943ceb27de16f","abstract_canon_sha256":"ef9c0054e429bc525a836d85c4fd84c284d9c235d28419f38e4c681d32ad1cdc"},"schema_version":"1.0"},"canonical_sha256":"83c3f0b0b31065895b42bd0465c913dd3dd6019c573f0ba34a872403daf3b779","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:47:14.391610Z","signature_b64":"PJwULviQv76heL3tOVg5kkynTbtIKgDBFutvbds1gYbR16l1svjr8qyjJzMhk+a+e1fkZWCDFmwhTaup9jQUDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"83c3f0b0b31065895b42bd0465c913dd3dd6019c573f0ba34a872403daf3b779","last_reissued_at":"2026-07-05T04:47:14.391144Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:47:14.391144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2203.09668","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":"2026-07-05T04:47:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ufNeJfoUwlu6xhXlMDaIWr+1QDVtnxZuOthxWuIkidZEWY7gGbSCY8UQD/JuMxm8xzqRU+odGPNzff3i4nt1BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T14:43:16.889709Z"},"content_sha256":"11e9fbdc0470ba71d30c78d47df4b906f869a585fe47f6324997446161f09c74","schema_version":"1.0","event_id":"sha256:11e9fbdc0470ba71d30c78d47df4b906f869a585fe47f6324997446161f09c74"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QPB7BMFTCBSYSW2CXUCGLSIT3U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Setigen: Simulating Radio Technosignatures for SETI","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Andrew P. V. Siemion, Bryan Brzycki, Cherry Ng, Danny C. Price, Imke de Pater, John Hoang, Sofia Z. Sheikh, Steve Croft, Zihe Zheng","submitted_at":"2022-03-18T00:31:02Z","abstract_excerpt":"The goal of the search for extraterrestrial intelligence (SETI) is the detection of non-human technosignatures, such as technology-produced emission in radio observations. While many have speculated about the character of such technosignatures, radio SETI fundamentally involves searching for signals that not only have never been detected, but also have a vast range of potential morphologies. Given that we have not yet detected a radio SETI signal, we must make assumptions about their form to develop search algorithms. The lack of positive detections also makes it difficult to test these algori"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.09668","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2203.09668/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":"2026-07-05T04:47:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XbF3eJTqPUbVlEdyinBmvqJpGdm3mUGTcFZ530yLHKpVJVWXhZFU/QxRw3fpNnVEoMu/pGZ3siHmIMLrlqL+AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T14:43:16.890078Z"},"content_sha256":"52a0c4900f4fbf2f8b9937c324e3a1412ede10004bcd2d802d3bfc6fe4f0ff99","schema_version":"1.0","event_id":"sha256:52a0c4900f4fbf2f8b9937c324e3a1412ede10004bcd2d802d3bfc6fe4f0ff99"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QPB7BMFTCBSYSW2CXUCGLSIT3U/bundle.json","state_url":"https://pith.science/pith/QPB7BMFTCBSYSW2CXUCGLSIT3U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QPB7BMFTCBSYSW2CXUCGLSIT3U/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":"2026-07-05T14:43:16Z","links":{"resolver":"https://pith.science/pith/QPB7BMFTCBSYSW2CXUCGLSIT3U","bundle":"https://pith.science/pith/QPB7BMFTCBSYSW2CXUCGLSIT3U/bundle.json","state":"https://pith.science/pith/QPB7BMFTCBSYSW2CXUCGLSIT3U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QPB7BMFTCBSYSW2CXUCGLSIT3U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QPB7BMFTCBSYSW2CXUCGLSIT3U","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":"ef9c0054e429bc525a836d85c4fd84c284d9c235d28419f38e4c681d32ad1cdc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-03-18T00:31:02Z","title_canon_sha256":"bebf8523478b64294179082d47fc9b7a64930a7d8f19d7e43c7943ceb27de16f"},"schema_version":"1.0","source":{"id":"2203.09668","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.09668","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"arxiv_version","alias_value":"2203.09668v1","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.09668","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"pith_short_12","alias_value":"QPB7BMFTCBSY","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"pith_short_16","alias_value":"QPB7BMFTCBSYSW2C","created_at":"2026-07-05T04:47:14Z"},{"alias_kind":"pith_short_8","alias_value":"QPB7BMFT","created_at":"2026-07-05T04:47:14Z"}],"graph_snapshots":[{"event_id":"sha256:52a0c4900f4fbf2f8b9937c324e3a1412ede10004bcd2d802d3bfc6fe4f0ff99","target":"graph","created_at":"2026-07-05T04:47:14Z","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/2203.09668/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The goal of the search for extraterrestrial intelligence (SETI) is the detection of non-human technosignatures, such as technology-produced emission in radio observations. While many have speculated about the character of such technosignatures, radio SETI fundamentally involves searching for signals that not only have never been detected, but also have a vast range of potential morphologies. Given that we have not yet detected a radio SETI signal, we must make assumptions about their form to develop search algorithms. The lack of positive detections also makes it difficult to test these algori","authors_text":"Andrew P. V. Siemion, Bryan Brzycki, Cherry Ng, Danny C. Price, Imke de Pater, John Hoang, Sofia Z. Sheikh, Steve Croft, Zihe Zheng","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-03-18T00:31:02Z","title":"Setigen: Simulating Radio Technosignatures for SETI"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.09668","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":"sha256:11e9fbdc0470ba71d30c78d47df4b906f869a585fe47f6324997446161f09c74","target":"record","created_at":"2026-07-05T04:47:14Z","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":"ef9c0054e429bc525a836d85c4fd84c284d9c235d28419f38e4c681d32ad1cdc","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2022-03-18T00:31:02Z","title_canon_sha256":"bebf8523478b64294179082d47fc9b7a64930a7d8f19d7e43c7943ceb27de16f"},"schema_version":"1.0","source":{"id":"2203.09668","kind":"arxiv","version":1}},"canonical_sha256":"83c3f0b0b31065895b42bd0465c913dd3dd6019c573f0ba34a872403daf3b779","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"83c3f0b0b31065895b42bd0465c913dd3dd6019c573f0ba34a872403daf3b779","first_computed_at":"2026-07-05T04:47:14.391144Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:47:14.391144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PJwULviQv76heL3tOVg5kkynTbtIKgDBFutvbds1gYbR16l1svjr8qyjJzMhk+a+e1fkZWCDFmwhTaup9jQUDw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:47:14.391610Z","signed_message":"canonical_sha256_bytes"},"source_id":"2203.09668","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:11e9fbdc0470ba71d30c78d47df4b906f869a585fe47f6324997446161f09c74","sha256:52a0c4900f4fbf2f8b9937c324e3a1412ede10004bcd2d802d3bfc6fe4f0ff99"],"state_sha256":"f26ba236b15b172953326b916043fb32e1338ee39ad54d16028ffce59ab05a40"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"a8i1f6qLiXjlz1KPIwOS6wwYc9XxAX4UVTC1QAMsUmBGhybNxjnXEzwFVQZks3O1dvm/RElUfpxznRgE+yWdDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T14:43:16.892183Z","bundle_sha256":"e6cf5c1e6958cedd9b28ec30bf58fa054389c320034d7d4027b53188b88ccf10"}}