{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:V4O42BHTS4YPCL26HMRYDH64K4","short_pith_number":"pith:V4O42BHT","canonical_record":{"source":{"id":"2405.03747","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-06T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"4c02085edbfd6302df045a5b46b5bffce2b6ae217f65cbbac42164cf1f0d48bc","abstract_canon_sha256":"cf5900d553506b8bce48acd3878c4fddb58546f53cf1986eb4e2e3ca3d376bc4"},"schema_version":"1.0"},"canonical_sha256":"af1dcd04f39730f12f5e3b23819fdc573f0168734a69d427df1e252ec3516115","source":{"kind":"arxiv","id":"2405.03747","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.03747","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"arxiv_version","alias_value":"2405.03747v1","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.03747","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"pith_short_12","alias_value":"V4O42BHTS4YP","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"pith_short_16","alias_value":"V4O42BHTS4YPCL26","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"pith_short_8","alias_value":"V4O42BHT","created_at":"2026-07-05T08:16:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:V4O42BHTS4YPCL26HMRYDH64K4","target":"record","payload":{"canonical_record":{"source":{"id":"2405.03747","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-06T18:00:01Z","cross_cats_sorted":[],"title_canon_sha256":"4c02085edbfd6302df045a5b46b5bffce2b6ae217f65cbbac42164cf1f0d48bc","abstract_canon_sha256":"cf5900d553506b8bce48acd3878c4fddb58546f53cf1986eb4e2e3ca3d376bc4"},"schema_version":"1.0"},"canonical_sha256":"af1dcd04f39730f12f5e3b23819fdc573f0168734a69d427df1e252ec3516115","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:16:10.324214Z","signature_b64":"uXAixknrXSKsfOKFmXnvGRh+I9DgI/+jMGvhtKerxkDtLluCjfi4jgVmhiUrM0SpJ3QZNMFabACsyO7YWrKdDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af1dcd04f39730f12f5e3b23819fdc573f0168734a69d427df1e252ec3516115","last_reissued_at":"2026-07-05T08:16:10.323627Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:16:10.323627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2405.03747","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":"2026-07-05T08:16:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gdICAJS11AyllDAD61J2GV+6NbhoKbYDeO9JcNFVmvYSjAKA3PgXVWY98KV6ga33cHAPdDESCXNJPb2UAo93AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T07:22:09.434841Z"},"content_sha256":"8611d9a0836bcdbc74f64ab837c70ac4f3a8374435328894a53641f99be95b62","schema_version":"1.0","event_id":"sha256:8611d9a0836bcdbc74f64ab837c70ac4f3a8374435328894a53641f99be95b62"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:V4O42BHTS4YPCL26HMRYDH64K4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"ATClean: A Novel Method for Detecting Low-Luminosity Transients and Application to Pre-explosion Counterparts from SN 2023ixf","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Clocchiatti, A. Heinze, A. Rest, B. Stalder, C. D. Kilpatrick, D. A. Coulter, J. E. Jencson, J. L. Tonry, J. P. Anderson, K. W. Smith, L. Denneau, L. Strolger, Q. Wang, R. Ridden-Harper, S. Gomez, S. Rest, S. Smartt, S. von Coelln, Y. Zenati","submitted_at":"2024-05-06T18:00:01Z","abstract_excerpt":"In an effort to search for faint sources of emission over arbitrary timescales, we present a novel method for analyzing forced photometry light curves in difference imaging from optical surveys. Our method \"ATLAS Clean'' or ATClean, utilizes the reported fluxes, uncertainties, and fits to the point-spread function from difference images to quantify the statistical significance of individual measurements. We apply this method to control light curves across the image to determine whether any source of flux is present in the data for a range of specific timescales. From ATLAS $o$-band imaging at "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.03747","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/2405.03747/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":"2026-07-05T08:16:10Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KGcUU4baFO70a78lC3f1HRp9LdWTRMBxPxmAF7UDkPsgGAuBcgiXt1bFzIVR0G2h1mZBw/mnF8MHADf8AaK8DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T07:22:09.436670Z"},"content_sha256":"7b535e0146bf0d428b42e7476101ee0e2c4a25eba5f56d4f427fb2f78a2c8599","schema_version":"1.0","event_id":"sha256:7b535e0146bf0d428b42e7476101ee0e2c4a25eba5f56d4f427fb2f78a2c8599"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V4O42BHTS4YPCL26HMRYDH64K4/bundle.json","state_url":"https://pith.science/pith/V4O42BHTS4YPCL26HMRYDH64K4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V4O42BHTS4YPCL26HMRYDH64K4/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":"2026-08-10T07:22:09Z","links":{"resolver":"https://pith.science/pith/V4O42BHTS4YPCL26HMRYDH64K4","bundle":"https://pith.science/pith/V4O42BHTS4YPCL26HMRYDH64K4/bundle.json","state":"https://pith.science/pith/V4O42BHTS4YPCL26HMRYDH64K4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V4O42BHTS4YPCL26HMRYDH64K4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:V4O42BHTS4YPCL26HMRYDH64K4","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":"cf5900d553506b8bce48acd3878c4fddb58546f53cf1986eb4e2e3ca3d376bc4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-06T18:00:01Z","title_canon_sha256":"4c02085edbfd6302df045a5b46b5bffce2b6ae217f65cbbac42164cf1f0d48bc"},"schema_version":"1.0","source":{"id":"2405.03747","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2405.03747","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"arxiv_version","alias_value":"2405.03747v1","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2405.03747","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"pith_short_12","alias_value":"V4O42BHTS4YP","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"pith_short_16","alias_value":"V4O42BHTS4YPCL26","created_at":"2026-07-05T08:16:10Z"},{"alias_kind":"pith_short_8","alias_value":"V4O42BHT","created_at":"2026-07-05T08:16:10Z"}],"graph_snapshots":[{"event_id":"sha256:7b535e0146bf0d428b42e7476101ee0e2c4a25eba5f56d4f427fb2f78a2c8599","target":"graph","created_at":"2026-07-05T08:16:10Z","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/2405.03747/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In an effort to search for faint sources of emission over arbitrary timescales, we present a novel method for analyzing forced photometry light curves in difference imaging from optical surveys. Our method \"ATLAS Clean'' or ATClean, utilizes the reported fluxes, uncertainties, and fits to the point-spread function from difference images to quantify the statistical significance of individual measurements. We apply this method to control light curves across the image to determine whether any source of flux is present in the data for a range of specific timescales. From ATLAS $o$-band imaging at ","authors_text":"A. Clocchiatti, A. Heinze, A. Rest, B. Stalder, C. D. Kilpatrick, D. A. Coulter, J. E. Jencson, J. L. Tonry, J. P. Anderson, K. W. Smith, L. Denneau, L. Strolger, Q. Wang, R. Ridden-Harper, S. Gomez, S. Rest, S. Smartt, S. von Coelln, Y. Zenati","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-06T18:00:01Z","title":"ATClean: A Novel Method for Detecting Low-Luminosity Transients and Application to Pre-explosion Counterparts from SN 2023ixf"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2405.03747","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":"sha256:8611d9a0836bcdbc74f64ab837c70ac4f3a8374435328894a53641f99be95b62","target":"record","created_at":"2026-07-05T08:16:10Z","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":"cf5900d553506b8bce48acd3878c4fddb58546f53cf1986eb4e2e3ca3d376bc4","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2024-05-06T18:00:01Z","title_canon_sha256":"4c02085edbfd6302df045a5b46b5bffce2b6ae217f65cbbac42164cf1f0d48bc"},"schema_version":"1.0","source":{"id":"2405.03747","kind":"arxiv","version":1}},"canonical_sha256":"af1dcd04f39730f12f5e3b23819fdc573f0168734a69d427df1e252ec3516115","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af1dcd04f39730f12f5e3b23819fdc573f0168734a69d427df1e252ec3516115","first_computed_at":"2026-07-05T08:16:10.323627Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:16:10.323627Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uXAixknrXSKsfOKFmXnvGRh+I9DgI/+jMGvhtKerxkDtLluCjfi4jgVmhiUrM0SpJ3QZNMFabACsyO7YWrKdDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T08:16:10.324214Z","signed_message":"canonical_sha256_bytes"},"source_id":"2405.03747","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8611d9a0836bcdbc74f64ab837c70ac4f3a8374435328894a53641f99be95b62","sha256:7b535e0146bf0d428b42e7476101ee0e2c4a25eba5f56d4f427fb2f78a2c8599"],"state_sha256":"e50d38f4f1d7b1cfa455c5fd8e3a8fee748c906521928eb23c18d79b2d9bab9c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3hq9P3AJhXvKULI1dSK4kzRLtBVvwqspP2zYqL61NObCEvNq5U2GGIkm/PsibjRcKLI4Ny8jAAZmsqSuvfqzCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T07:22:09.442412Z","bundle_sha256":"4dc186a82348a6ed373aafb455911f29a4e846e7f1114d857aaed74c8c69a2f2"}}