{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:O4GRDY7BLIQCXVM3HQUPLN5W4W","short_pith_number":"pith:O4GRDY7B","canonical_record":{"source":{"id":"2504.19897","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-04-28T15:28:44Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"7c7066cba45c2978d4731ccadce0a2497822c8b5abbef42c02d67159aeab3a73","abstract_canon_sha256":"9685d2e40cd70041c62a5c0efb5d6cc903ec7343c953ba4b24544c71c8833ce9"},"schema_version":"1.0"},"canonical_sha256":"770d11e3e15a202bd59b3c28f5b7b6e592e5f63b8d31fb7e7dc1286d39d70987","source":{"kind":"arxiv","id":"2504.19897","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.19897","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"arxiv_version","alias_value":"2504.19897v2","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.19897","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"pith_short_12","alias_value":"O4GRDY7BLIQC","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"pith_short_16","alias_value":"O4GRDY7BLIQCXVM3","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"pith_short_8","alias_value":"O4GRDY7B","created_at":"2026-07-05T12:05:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:O4GRDY7BLIQCXVM3HQUPLN5W4W","target":"record","payload":{"canonical_record":{"source":{"id":"2504.19897","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-04-28T15:28:44Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"7c7066cba45c2978d4731ccadce0a2497822c8b5abbef42c02d67159aeab3a73","abstract_canon_sha256":"9685d2e40cd70041c62a5c0efb5d6cc903ec7343c953ba4b24544c71c8833ce9"},"schema_version":"1.0"},"canonical_sha256":"770d11e3e15a202bd59b3c28f5b7b6e592e5f63b8d31fb7e7dc1286d39d70987","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:05:42.743029Z","signature_b64":"oY4pUEppdcAKqv4lUSKTUj6SKgTA4kINjld4h3C0dslA4GKzxCwe++TSU0ewiQacldJDcsYh2OdXpse+evYzDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"770d11e3e15a202bd59b3c28f5b7b6e592e5f63b8d31fb7e7dc1286d39d70987","last_reissued_at":"2026-07-05T12:05:42.742267Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:05:42.742267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2504.19897","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":"2026-07-05T12:05:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6dbBvlVm/+C3imODLYLNCg3AAieYRnlkeIygGpMF5Jl25O4XINDiCeXadgdkagrT6xC03rOUYqwsqPdT0ow9Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:47:30.484260Z"},"content_sha256":"aa8ab6637763c1c7a9f76adb33675ec0c11f05e5fdd6570b90645eaec11a8ee3","schema_version":"1.0","event_id":"sha256:aa8ab6637763c1c7a9f76adb33675ec0c11f05e5fdd6570b90645eaec11a8ee3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:O4GRDY7BLIQCXVM3HQUPLN5W4W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Dust Echo Emission of Fast Blue Optical Transients and Application to the Near-Infrared Excess of AT 2018cow","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.HE","authors_text":"Jing-Yao Li, Liang-Duan Liu, Ming-Yan Xiao, Yun-Wei Yu","submitted_at":"2025-04-28T15:28:44Z","abstract_excerpt":"A near-infrared (NIR) excess has been discovered in the emission of the representative fast blue optical transient (FBOT): AT 2018cow. It was suggested that this NIR excess could be emitted by the dust surrounding the source and, thus, could provide a probe into the nature of its progenitor. We develop a model to describe the influence of the FBOT emission on the environmental dust and, as a result, a dust-free evaporation cavity can be formed on a timescale of one day. Outside this cavity, the surviving dust grains can have different size distributions at different distances to the source. Wi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.19897","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/2504.19897/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":"2026-07-05T12:05:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FmGf2x+gTf/cIifyh/3Rlsw5TUQ+EBWKtfb7EjRGsacCX4xIte3J70BF3BCrFE6N1tzYJXMJYbYwn8x7U9KeCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T15:47:30.484771Z"},"content_sha256":"ae3816a86b92ea455fc87d77054669e28eefff0b21facfcc57ef56dffd37ec51","schema_version":"1.0","event_id":"sha256:ae3816a86b92ea455fc87d77054669e28eefff0b21facfcc57ef56dffd37ec51"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/O4GRDY7BLIQCXVM3HQUPLN5W4W/bundle.json","state_url":"https://pith.science/pith/O4GRDY7BLIQCXVM3HQUPLN5W4W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/O4GRDY7BLIQCXVM3HQUPLN5W4W/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":"2026-08-03T15:47:30Z","links":{"resolver":"https://pith.science/pith/O4GRDY7BLIQCXVM3HQUPLN5W4W","bundle":"https://pith.science/pith/O4GRDY7BLIQCXVM3HQUPLN5W4W/bundle.json","state":"https://pith.science/pith/O4GRDY7BLIQCXVM3HQUPLN5W4W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/O4GRDY7BLIQCXVM3HQUPLN5W4W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:O4GRDY7BLIQCXVM3HQUPLN5W4W","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":"9685d2e40cd70041c62a5c0efb5d6cc903ec7343c953ba4b24544c71c8833ce9","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-04-28T15:28:44Z","title_canon_sha256":"7c7066cba45c2978d4731ccadce0a2497822c8b5abbef42c02d67159aeab3a73"},"schema_version":"1.0","source":{"id":"2504.19897","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2504.19897","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"arxiv_version","alias_value":"2504.19897v2","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.19897","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"pith_short_12","alias_value":"O4GRDY7BLIQC","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"pith_short_16","alias_value":"O4GRDY7BLIQCXVM3","created_at":"2026-07-05T12:05:42Z"},{"alias_kind":"pith_short_8","alias_value":"O4GRDY7B","created_at":"2026-07-05T12:05:42Z"}],"graph_snapshots":[{"event_id":"sha256:ae3816a86b92ea455fc87d77054669e28eefff0b21facfcc57ef56dffd37ec51","target":"graph","created_at":"2026-07-05T12:05:42Z","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/2504.19897/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"A near-infrared (NIR) excess has been discovered in the emission of the representative fast blue optical transient (FBOT): AT 2018cow. It was suggested that this NIR excess could be emitted by the dust surrounding the source and, thus, could provide a probe into the nature of its progenitor. We develop a model to describe the influence of the FBOT emission on the environmental dust and, as a result, a dust-free evaporation cavity can be formed on a timescale of one day. Outside this cavity, the surviving dust grains can have different size distributions at different distances to the source. Wi","authors_text":"Jing-Yao Li, Liang-Duan Liu, Ming-Yan Xiao, Yun-Wei Yu","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-04-28T15:28:44Z","title":"The Dust Echo Emission of Fast Blue Optical Transients and Application to the Near-Infrared Excess of AT 2018cow"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.19897","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:aa8ab6637763c1c7a9f76adb33675ec0c11f05e5fdd6570b90645eaec11a8ee3","target":"record","created_at":"2026-07-05T12:05:42Z","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":"9685d2e40cd70041c62a5c0efb5d6cc903ec7343c953ba4b24544c71c8833ce9","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2025-04-28T15:28:44Z","title_canon_sha256":"7c7066cba45c2978d4731ccadce0a2497822c8b5abbef42c02d67159aeab3a73"},"schema_version":"1.0","source":{"id":"2504.19897","kind":"arxiv","version":2}},"canonical_sha256":"770d11e3e15a202bd59b3c28f5b7b6e592e5f63b8d31fb7e7dc1286d39d70987","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"770d11e3e15a202bd59b3c28f5b7b6e592e5f63b8d31fb7e7dc1286d39d70987","first_computed_at":"2026-07-05T12:05:42.742267Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T12:05:42.742267Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oY4pUEppdcAKqv4lUSKTUj6SKgTA4kINjld4h3C0dslA4GKzxCwe++TSU0ewiQacldJDcsYh2OdXpse+evYzDw==","signature_status":"signed_v1","signed_at":"2026-07-05T12:05:42.743029Z","signed_message":"canonical_sha256_bytes"},"source_id":"2504.19897","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa8ab6637763c1c7a9f76adb33675ec0c11f05e5fdd6570b90645eaec11a8ee3","sha256:ae3816a86b92ea455fc87d77054669e28eefff0b21facfcc57ef56dffd37ec51"],"state_sha256":"e944904fdd166547c3de341fcb2bf8b9af3f2fa041fedddedc2457767b433836"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i6/527Hdy5FD45Fg/DkQico53dToVVdPaKf8izceFs5SGlfZ70nDotaR/QU3U9JrdG7QGSloY0uSzemuYXsGDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T15:47:30.490589Z","bundle_sha256":"5c6cab59388b2975f904ad5e9607e8155a6827584576c89089872f12a7934a9d"}}