{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:S63PNCKWNMIHG62DKYXJRGEAQZ","short_pith_number":"pith:S63PNCKW","canonical_record":{"source":{"id":"2001.03683","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-10T22:35:29Z","cross_cats_sorted":[],"title_canon_sha256":"570c84951710c93d301ff72d1b39dd50f1714712ce659d3b35cf03b5ecc39af5","abstract_canon_sha256":"d4c7957b792a3249dd725783b8aed09b58ed3b27909bd6f9653ac526ad771c40"},"schema_version":"1.0"},"canonical_sha256":"97b6f689566b10737b43562e9898808645705bd229016bd82b9022c094a14dc7","source":{"kind":"arxiv","id":"2001.03683","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.03683","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"arxiv_version","alias_value":"2001.03683v3","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.03683","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"pith_short_12","alias_value":"S63PNCKWNMIH","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"pith_short_16","alias_value":"S63PNCKWNMIHG62D","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"pith_short_8","alias_value":"S63PNCKW","created_at":"2026-07-05T00:51:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:S63PNCKWNMIHG62DKYXJRGEAQZ","target":"record","payload":{"canonical_record":{"source":{"id":"2001.03683","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-10T22:35:29Z","cross_cats_sorted":[],"title_canon_sha256":"570c84951710c93d301ff72d1b39dd50f1714712ce659d3b35cf03b5ecc39af5","abstract_canon_sha256":"d4c7957b792a3249dd725783b8aed09b58ed3b27909bd6f9653ac526ad771c40"},"schema_version":"1.0"},"canonical_sha256":"97b6f689566b10737b43562e9898808645705bd229016bd82b9022c094a14dc7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:51:06.085429Z","signature_b64":"r7Ts9uWZHKOZD7bdGwJoUBJYwd/GyJag7w49vyqjYU98gsif28GfwQOCKyvgM4L6HDKtUTeKoALja/pWQ21uDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"97b6f689566b10737b43562e9898808645705bd229016bd82b9022c094a14dc7","last_reissued_at":"2026-07-05T00:51:06.084982Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:51:06.084982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2001.03683","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:51:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rkIAVhldmocD5klYj1K+4Z2QrfZTNnPfsOA6JKLsmyt8BvxmbHuGvlNuod5tJ0JLif74k14roL6CtZibwiEsAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-28T20:04:09.601428Z"},"content_sha256":"2bbef82d1323d7293277d7a4fa1ae5f6c4244423289bb5bac375917d61826303","schema_version":"1.0","event_id":"sha256:2bbef82d1323d7293277d7a4fa1ae5f6c4244423289bb5bac375917d61826303"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:S63PNCKWNMIHG62DKYXJRGEAQZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Swift Bulge Survey: optical and near-IR follow-up featuring a likely symbiotic X-ray binary & a focused wind CV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Bahramian, A. J. Tetarenko, A. Rau, A. W. Shaw, C. O. Heinke, E. Kuulkers, G. R. Sivakoff, J. A. Kennea, J. J. M. in 't Zand, J. Strader, L. E. Rivera Sandoval, L. Shishkovsky, N. Degenaar, R. Wijnands, S. J. Swihart, T. J. Maccarone","submitted_at":"2020-01-10T22:35:29Z","abstract_excerpt":"The nature of very faint X-ray transients (VFXTs) - transient X-ray sources that peak at luminosities $L_X\\lesssim10^{36} {\\rm erg s^{-1}}$ - is poorly understood. The faint and often short-lived outbursts make characterising VFXTs and their multi-wavelength counterparts difficult. In 2017 April we initiated the Swift Bulge Survey, a shallow X-ray survey of $\\sim$16 square degrees around the Galactic centre with the Neil Gehrels Swift Observatory. The survey has been designed to detect new and known VFXTs, with follow-up programmes arranged to study their multi-wavelength counterparts. Here we"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.03683","kind":"arxiv","version":3},"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/2001.03683/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":"2026-07-05T00:51:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MCfBM0AL1JD9fI5ndzhP653WBcKX7hHcVDN3BjXfdf3gSg0+FzhqiGQq4AnobPgnEWQddJDssj1fWbhJriyMDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-28T20:04:09.601805Z"},"content_sha256":"154b844132880753c4a0a69e152696bd36b7afef62760dfe1cab63bc70ada629","schema_version":"1.0","event_id":"sha256:154b844132880753c4a0a69e152696bd36b7afef62760dfe1cab63bc70ada629"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S63PNCKWNMIHG62DKYXJRGEAQZ/bundle.json","state_url":"https://pith.science/pith/S63PNCKWNMIHG62DKYXJRGEAQZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S63PNCKWNMIHG62DKYXJRGEAQZ/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":"2026-07-28T20:04:09Z","links":{"resolver":"https://pith.science/pith/S63PNCKWNMIHG62DKYXJRGEAQZ","bundle":"https://pith.science/pith/S63PNCKWNMIHG62DKYXJRGEAQZ/bundle.json","state":"https://pith.science/pith/S63PNCKWNMIHG62DKYXJRGEAQZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S63PNCKWNMIHG62DKYXJRGEAQZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:S63PNCKWNMIHG62DKYXJRGEAQZ","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":"d4c7957b792a3249dd725783b8aed09b58ed3b27909bd6f9653ac526ad771c40","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-10T22:35:29Z","title_canon_sha256":"570c84951710c93d301ff72d1b39dd50f1714712ce659d3b35cf03b5ecc39af5"},"schema_version":"1.0","source":{"id":"2001.03683","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2001.03683","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"arxiv_version","alias_value":"2001.03683v3","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2001.03683","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"pith_short_12","alias_value":"S63PNCKWNMIH","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"pith_short_16","alias_value":"S63PNCKWNMIHG62D","created_at":"2026-07-05T00:51:06Z"},{"alias_kind":"pith_short_8","alias_value":"S63PNCKW","created_at":"2026-07-05T00:51:06Z"}],"graph_snapshots":[{"event_id":"sha256:154b844132880753c4a0a69e152696bd36b7afef62760dfe1cab63bc70ada629","target":"graph","created_at":"2026-07-05T00:51:06Z","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/2001.03683/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The nature of very faint X-ray transients (VFXTs) - transient X-ray sources that peak at luminosities $L_X\\lesssim10^{36} {\\rm erg s^{-1}}$ - is poorly understood. The faint and often short-lived outbursts make characterising VFXTs and their multi-wavelength counterparts difficult. In 2017 April we initiated the Swift Bulge Survey, a shallow X-ray survey of $\\sim$16 square degrees around the Galactic centre with the Neil Gehrels Swift Observatory. The survey has been designed to detect new and known VFXTs, with follow-up programmes arranged to study their multi-wavelength counterparts. Here we","authors_text":"A. Bahramian, A. J. Tetarenko, A. Rau, A. W. Shaw, C. O. Heinke, E. Kuulkers, G. R. Sivakoff, J. A. Kennea, J. J. M. in 't Zand, J. Strader, L. E. Rivera Sandoval, L. Shishkovsky, N. Degenaar, R. Wijnands, S. J. Swihart, T. J. Maccarone","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-10T22:35:29Z","title":"The Swift Bulge Survey: optical and near-IR follow-up featuring a likely symbiotic X-ray binary & a focused wind CV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2001.03683","kind":"arxiv","version":3},"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":"sha256:2bbef82d1323d7293277d7a4fa1ae5f6c4244423289bb5bac375917d61826303","target":"record","created_at":"2026-07-05T00:51:06Z","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":"d4c7957b792a3249dd725783b8aed09b58ed3b27909bd6f9653ac526ad771c40","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-01-10T22:35:29Z","title_canon_sha256":"570c84951710c93d301ff72d1b39dd50f1714712ce659d3b35cf03b5ecc39af5"},"schema_version":"1.0","source":{"id":"2001.03683","kind":"arxiv","version":3}},"canonical_sha256":"97b6f689566b10737b43562e9898808645705bd229016bd82b9022c094a14dc7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"97b6f689566b10737b43562e9898808645705bd229016bd82b9022c094a14dc7","first_computed_at":"2026-07-05T00:51:06.084982Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:51:06.084982Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"r7Ts9uWZHKOZD7bdGwJoUBJYwd/GyJag7w49vyqjYU98gsif28GfwQOCKyvgM4L6HDKtUTeKoALja/pWQ21uDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:51:06.085429Z","signed_message":"canonical_sha256_bytes"},"source_id":"2001.03683","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2bbef82d1323d7293277d7a4fa1ae5f6c4244423289bb5bac375917d61826303","sha256:154b844132880753c4a0a69e152696bd36b7afef62760dfe1cab63bc70ada629"],"state_sha256":"d10aae0bbca5eebbaa5348b79d29792ac5303db3b7685ced79d74f409229cf6d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GS+6GLgM1W6erH3sAdk0PmZl3wevqujMaNU0RtZKvfHgwgihNWEnwfWJJvfM//T3gpLbdZ8MFFw/AGzPMuKhCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-28T20:04:09.604304Z","bundle_sha256":"0ce7006f0a9c3bb5b7c528b54ed4e086ff05f9231081ab6a7e72ec7142a02f34"}}