{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:KQWMMCDO3OLWF6LMBHKP5IJ2C6","short_pith_number":"pith:KQWMMCDO","canonical_record":{"source":{"id":"2508.13695","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2025-08-19T09:55:49Z","cross_cats_sorted":["physics.data-an","physics.ins-det"],"title_canon_sha256":"f2104590647d23641242dd98af01b728f7687db251f3f27b6fbc991dbfcb48f0","abstract_canon_sha256":"bcd29005f3ae205ebdd22e8e1373216f428aa3f59a0b9c0f034ffcd2d70f94f4"},"schema_version":"1.0"},"canonical_sha256":"542cc6086edb9762f96c09d4fea13a1789c84a7012b18e476a2a9c8e3ba9f0c0","source":{"kind":"arxiv","id":"2508.13695","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.13695","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"arxiv_version","alias_value":"2508.13695v1","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.13695","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"pith_short_12","alias_value":"KQWMMCDO3OLW","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"pith_short_16","alias_value":"KQWMMCDO3OLWF6LM","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"pith_short_8","alias_value":"KQWMMCDO","created_at":"2026-07-05T11:55:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:KQWMMCDO3OLWF6LMBHKP5IJ2C6","target":"record","payload":{"canonical_record":{"source":{"id":"2508.13695","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2025-08-19T09:55:49Z","cross_cats_sorted":["physics.data-an","physics.ins-det"],"title_canon_sha256":"f2104590647d23641242dd98af01b728f7687db251f3f27b6fbc991dbfcb48f0","abstract_canon_sha256":"bcd29005f3ae205ebdd22e8e1373216f428aa3f59a0b9c0f034ffcd2d70f94f4"},"schema_version":"1.0"},"canonical_sha256":"542cc6086edb9762f96c09d4fea13a1789c84a7012b18e476a2a9c8e3ba9f0c0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:55:52.596170Z","signature_b64":"enq9dK/aF0BFn4h0rZPNtpzqFo/uSMf4p6WV5aK39wxQQkvfzFrNnu8FIg4ZIAdLINwACbQ0moBonGh6aWGACQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"542cc6086edb9762f96c09d4fea13a1789c84a7012b18e476a2a9c8e3ba9f0c0","last_reissued_at":"2026-07-05T11:55:52.595700Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:55:52.595700Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2508.13695","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":"2026-07-05T11:55:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"knJt47QZjpsZeyeRABU9cCaViJ9gxAd6jAJdR7c4RmfqbVlTF+Z69Mz7qvb2RTmFAtftCwDOI967rITHYfN7CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T22:34:15.877207Z"},"content_sha256":"3f591ac6c43c9a9179af8c10d1163f95db8dbb84a6010b527042cc6e2107162a","schema_version":"1.0","event_id":"sha256:3f591ac6c43c9a9179af8c10d1163f95db8dbb84a6010b527042cc6e2107162a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:KQWMMCDO3OLWF6LMBHKP5IJ2C6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Bayesian approach to time-domain Photonic Doppler Velocimetry","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.data-an","physics.ins-det"],"primary_cat":"physics.plasm-ph","authors_text":"(2) Sandia National Laboratories, (3) Washington State University), A. Hansen (2) ((1) First Light Fusion Ltd., A. Porwitzky (2), B. Farfan (2), C. Johnson (2), D. Dolan (3), G. Burdiak (1), H. Doyle (1), J. R. Allison (1), J. Read (1), J. Skidmore (1), N. Hawker (1), N. Joiner (1), R. Bordas (1), T. Ao (2), V. Beltr\\'an (1)","submitted_at":"2025-08-19T09:55:49Z","abstract_excerpt":"Photonic Doppler Velocimetry (PDV) is an established technique for measuring the velocities of fast-moving surfaces in high-energy-density experiments. In the standard approach to PDV analysis, a short-time Fourier transform (STFT) is used to generate a spectrogram from which the velocity history of the target is inferred. The user chooses the form, duration and separation of the window function. Here we present a Bayesian approach to infer the velocity directly from the PDV oscilloscope trace, without using the spectrogram for analysis. This is clearly a difficult inference problem due to the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.13695","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/2508.13695/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":"2026-07-05T11:55:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X+SBAliJ5KEJjJr3DEx7ofuyB+P8dufLTKPgcjDey3rCiFxPVTMbLX+DVoovdnJYqrpq+t1oQi5eIqUnAc2ZBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-16T22:34:15.877789Z"},"content_sha256":"9b0a5ab9d1c76e853a247f1cb72d2b44f671936f1e8e626dd961c7d08752d0dd","schema_version":"1.0","event_id":"sha256:9b0a5ab9d1c76e853a247f1cb72d2b44f671936f1e8e626dd961c7d08752d0dd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KQWMMCDO3OLWF6LMBHKP5IJ2C6/bundle.json","state_url":"https://pith.science/pith/KQWMMCDO3OLWF6LMBHKP5IJ2C6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KQWMMCDO3OLWF6LMBHKP5IJ2C6/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":"2026-08-16T22:34:15Z","links":{"resolver":"https://pith.science/pith/KQWMMCDO3OLWF6LMBHKP5IJ2C6","bundle":"https://pith.science/pith/KQWMMCDO3OLWF6LMBHKP5IJ2C6/bundle.json","state":"https://pith.science/pith/KQWMMCDO3OLWF6LMBHKP5IJ2C6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KQWMMCDO3OLWF6LMBHKP5IJ2C6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:KQWMMCDO3OLWF6LMBHKP5IJ2C6","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":"bcd29005f3ae205ebdd22e8e1373216f428aa3f59a0b9c0f034ffcd2d70f94f4","cross_cats_sorted":["physics.data-an","physics.ins-det"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2025-08-19T09:55:49Z","title_canon_sha256":"f2104590647d23641242dd98af01b728f7687db251f3f27b6fbc991dbfcb48f0"},"schema_version":"1.0","source":{"id":"2508.13695","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2508.13695","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"arxiv_version","alias_value":"2508.13695v1","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2508.13695","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"pith_short_12","alias_value":"KQWMMCDO3OLW","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"pith_short_16","alias_value":"KQWMMCDO3OLWF6LM","created_at":"2026-07-05T11:55:52Z"},{"alias_kind":"pith_short_8","alias_value":"KQWMMCDO","created_at":"2026-07-05T11:55:52Z"}],"graph_snapshots":[{"event_id":"sha256:9b0a5ab9d1c76e853a247f1cb72d2b44f671936f1e8e626dd961c7d08752d0dd","target":"graph","created_at":"2026-07-05T11:55:52Z","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/2508.13695/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Photonic Doppler Velocimetry (PDV) is an established technique for measuring the velocities of fast-moving surfaces in high-energy-density experiments. In the standard approach to PDV analysis, a short-time Fourier transform (STFT) is used to generate a spectrogram from which the velocity history of the target is inferred. The user chooses the form, duration and separation of the window function. Here we present a Bayesian approach to infer the velocity directly from the PDV oscilloscope trace, without using the spectrogram for analysis. This is clearly a difficult inference problem due to the","authors_text":"(2) Sandia National Laboratories, (3) Washington State University), A. Hansen (2) ((1) First Light Fusion Ltd., A. Porwitzky (2), B. Farfan (2), C. Johnson (2), D. Dolan (3), G. Burdiak (1), H. Doyle (1), J. R. Allison (1), J. Read (1), J. Skidmore (1), N. Hawker (1), N. Joiner (1), R. Bordas (1), T. Ao (2), V. Beltr\\'an (1)","cross_cats":["physics.data-an","physics.ins-det"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2025-08-19T09:55:49Z","title":"A Bayesian approach to time-domain Photonic Doppler Velocimetry"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2508.13695","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":"sha256:3f591ac6c43c9a9179af8c10d1163f95db8dbb84a6010b527042cc6e2107162a","target":"record","created_at":"2026-07-05T11:55:52Z","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":"bcd29005f3ae205ebdd22e8e1373216f428aa3f59a0b9c0f034ffcd2d70f94f4","cross_cats_sorted":["physics.data-an","physics.ins-det"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2025-08-19T09:55:49Z","title_canon_sha256":"f2104590647d23641242dd98af01b728f7687db251f3f27b6fbc991dbfcb48f0"},"schema_version":"1.0","source":{"id":"2508.13695","kind":"arxiv","version":1}},"canonical_sha256":"542cc6086edb9762f96c09d4fea13a1789c84a7012b18e476a2a9c8e3ba9f0c0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"542cc6086edb9762f96c09d4fea13a1789c84a7012b18e476a2a9c8e3ba9f0c0","first_computed_at":"2026-07-05T11:55:52.595700Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:55:52.595700Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"enq9dK/aF0BFn4h0rZPNtpzqFo/uSMf4p6WV5aK39wxQQkvfzFrNnu8FIg4ZIAdLINwACbQ0moBonGh6aWGACQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:55:52.596170Z","signed_message":"canonical_sha256_bytes"},"source_id":"2508.13695","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3f591ac6c43c9a9179af8c10d1163f95db8dbb84a6010b527042cc6e2107162a","sha256:9b0a5ab9d1c76e853a247f1cb72d2b44f671936f1e8e626dd961c7d08752d0dd"],"state_sha256":"f9e19c253e13678e4550bacd4f2c3f1e5ec2911831a344f24645e65899c008f2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5uYJSlDN89OqlJ3eiGWehlIRhx9CCXpVsNLUid3OLBc6p9r/PDmBWwN/2nN0X8NhUIo8ZFwqLck0/njj6F9qDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-16T22:34:15.881428Z","bundle_sha256":"d20f9b0ee80e8e8bbb9a4eb9827fa1974a98864b42e52849c8dc2f8533fdc623"}}