{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:AIG44ZXLBNO7YICCQCR4QDOXKA","short_pith_number":"pith:AIG44ZXL","canonical_record":{"source":{"id":"2608.03582","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-08-04T12:35:36Z","cross_cats_sorted":[],"title_canon_sha256":"1e6873c4f644169ba3561f9873c8074ac1889332677ca6118df48869f6dc95ae","abstract_canon_sha256":"f073229cb7ac101c69c611a85ee42e81471465254c576e2167f841a6ca8dc6ad"},"schema_version":"1.0"},"canonical_sha256":"020dce66eb0b5dfc204280a3c80dd750363f860a132b9e0e0512768b4acc3185","source":{"kind":"arxiv","id":"2608.03582","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.03582","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"arxiv_version","alias_value":"2608.03582v1","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.03582","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"pith_short_12","alias_value":"AIG44ZXLBNO7","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"pith_short_16","alias_value":"AIG44ZXLBNO7YICC","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"pith_short_8","alias_value":"AIG44ZXL","created_at":"2026-08-05T01:36:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:AIG44ZXLBNO7YICCQCR4QDOXKA","target":"record","payload":{"canonical_record":{"source":{"id":"2608.03582","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-08-04T12:35:36Z","cross_cats_sorted":[],"title_canon_sha256":"1e6873c4f644169ba3561f9873c8074ac1889332677ca6118df48869f6dc95ae","abstract_canon_sha256":"f073229cb7ac101c69c611a85ee42e81471465254c576e2167f841a6ca8dc6ad"},"schema_version":"1.0"},"canonical_sha256":"020dce66eb0b5dfc204280a3c80dd750363f860a132b9e0e0512768b4acc3185","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-08-05T01:36:42.091940Z","signature_b64":"CWivRNWlM40UZfpeVf4aobgUJbSjLyfUp2Q6oHuuCteMZ+5E3q198Bu1V8Dp9YtcJTv/UFX0kzqq9IgPuqNWCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"020dce66eb0b5dfc204280a3c80dd750363f860a132b9e0e0512768b4acc3185","last_reissued_at":"2026-08-05T01:36:42.089934Z","signature_status":"signed_v1","first_computed_at":"2026-08-05T01:36:42.089934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2608.03582","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":"2026-08-05T01:36:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"svbJ4GY9KmaDk+921bjOXxTrQefT0wn48B7HZ+kXwXyLmw7N1FHEZaa0wzvFelVT5cwKDtBBfM1hHKoK2ExhAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T01:47:18.759316Z"},"content_sha256":"bf3d21aab1fe983495004f5300b892acbe69be8f21734ab555e73ef777cf070c","schema_version":"1.0","event_id":"sha256:bf3d21aab1fe983495004f5300b892acbe69be8f21734ab555e73ef777cf070c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:AIG44ZXLBNO7YICCQCR4QDOXKA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A JWST redshift for the host galaxy of EP250207b of z=3.2: a collapsar origin is viable","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Agnes P. C. van Hoof, Andrea Rossi, Andrew J. Levan, Antonio Martin-Carrillo, Ashley Chrimes, Daniele B. Malesani, Daniel Mata S\\'anchez, Francesca Onori, Francesco Carotenuto, Franz E. Bauer, Gregory Corcoran, Hui Sun, Javi S\\'anchez-Sierras, Joe Bright, Jonathan Quirola-V\\'asquez, Joyce N. D. van Dalen, Laura Cotter, Manuel A.P. Torres, Maria E. Ravasio, Morgan Fraser, Nial R. Tanvir, Nikhil Sarin, Paul O'Brien, Peter G. Jonker, Rob A.J. Eyles-Ferris, Steve Schulze, Ting-Wan Chen","submitted_at":"2026-08-04T12:35:36Z","abstract_excerpt":"We present James Webb Space Telescope (JWST) and Hubble Space Telescope (HST) observations of the field of the fast X-ray transient (FXT) detected by Einstein Probe, EP250207b, to resolve any ambiguity about the host galaxy and redshift of the FXT. EP250207b was originally associated with a nearby galaxy at z=0.082, based on its low chance alignment probability, and a binary neutron star merger origin was proposed. However, we report the detection of a background galaxy at z=3.2 at the location of EP250207b. Assuming this galaxy is the actual host galaxy, the rest-frame energetics and timescal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.03582","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/2608.03582/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":"2026-08-05T01:36:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UuJ3AD2D99J+trtLwoSoMul7Cm3Yz3xktsoqNusP7yslLCKPKCW3hKphrgis37XVbB2SNIVYD8PDnQ3SX4fRAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T01:47:18.759825Z"},"content_sha256":"c770df4ac26d531f5bc504c63299d954bdf5266c6e5e21a4ea695ff43c465910","schema_version":"1.0","event_id":"sha256:c770df4ac26d531f5bc504c63299d954bdf5266c6e5e21a4ea695ff43c465910"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AIG44ZXLBNO7YICCQCR4QDOXKA/bundle.json","state_url":"https://pith.science/pith/AIG44ZXLBNO7YICCQCR4QDOXKA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AIG44ZXLBNO7YICCQCR4QDOXKA/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":"2026-08-06T01:47:18Z","links":{"resolver":"https://pith.science/pith/AIG44ZXLBNO7YICCQCR4QDOXKA","bundle":"https://pith.science/pith/AIG44ZXLBNO7YICCQCR4QDOXKA/bundle.json","state":"https://pith.science/pith/AIG44ZXLBNO7YICCQCR4QDOXKA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AIG44ZXLBNO7YICCQCR4QDOXKA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:AIG44ZXLBNO7YICCQCR4QDOXKA","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":"f073229cb7ac101c69c611a85ee42e81471465254c576e2167f841a6ca8dc6ad","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-08-04T12:35:36Z","title_canon_sha256":"1e6873c4f644169ba3561f9873c8074ac1889332677ca6118df48869f6dc95ae"},"schema_version":"1.0","source":{"id":"2608.03582","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2608.03582","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"arxiv_version","alias_value":"2608.03582v1","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2608.03582","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"pith_short_12","alias_value":"AIG44ZXLBNO7","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"pith_short_16","alias_value":"AIG44ZXLBNO7YICC","created_at":"2026-08-05T01:36:42Z"},{"alias_kind":"pith_short_8","alias_value":"AIG44ZXL","created_at":"2026-08-05T01:36:42Z"}],"graph_snapshots":[{"event_id":"sha256:c770df4ac26d531f5bc504c63299d954bdf5266c6e5e21a4ea695ff43c465910","target":"graph","created_at":"2026-08-05T01:36:42Z","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/2608.03582/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present James Webb Space Telescope (JWST) and Hubble Space Telescope (HST) observations of the field of the fast X-ray transient (FXT) detected by Einstein Probe, EP250207b, to resolve any ambiguity about the host galaxy and redshift of the FXT. EP250207b was originally associated with a nearby galaxy at z=0.082, based on its low chance alignment probability, and a binary neutron star merger origin was proposed. However, we report the detection of a background galaxy at z=3.2 at the location of EP250207b. Assuming this galaxy is the actual host galaxy, the rest-frame energetics and timescal","authors_text":"Agnes P. C. van Hoof, Andrea Rossi, Andrew J. Levan, Antonio Martin-Carrillo, Ashley Chrimes, Daniele B. Malesani, Daniel Mata S\\'anchez, Francesca Onori, Francesco Carotenuto, Franz E. Bauer, Gregory Corcoran, Hui Sun, Javi S\\'anchez-Sierras, Joe Bright, Jonathan Quirola-V\\'asquez, Joyce N. D. van Dalen, Laura Cotter, Manuel A.P. Torres, Maria E. Ravasio, Morgan Fraser, Nial R. Tanvir, Nikhil Sarin, Paul O'Brien, Peter G. Jonker, Rob A.J. Eyles-Ferris, Steve Schulze, Ting-Wan Chen","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-08-04T12:35:36Z","title":"A JWST redshift for the host galaxy of EP250207b of z=3.2: a collapsar origin is viable"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2608.03582","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:bf3d21aab1fe983495004f5300b892acbe69be8f21734ab555e73ef777cf070c","target":"record","created_at":"2026-08-05T01:36:42Z","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":"f073229cb7ac101c69c611a85ee42e81471465254c576e2167f841a6ca8dc6ad","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.HE","submitted_at":"2026-08-04T12:35:36Z","title_canon_sha256":"1e6873c4f644169ba3561f9873c8074ac1889332677ca6118df48869f6dc95ae"},"schema_version":"1.0","source":{"id":"2608.03582","kind":"arxiv","version":1}},"canonical_sha256":"020dce66eb0b5dfc204280a3c80dd750363f860a132b9e0e0512768b4acc3185","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"020dce66eb0b5dfc204280a3c80dd750363f860a132b9e0e0512768b4acc3185","first_computed_at":"2026-08-05T01:36:42.089934Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-08-05T01:36:42.089934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CWivRNWlM40UZfpeVf4aobgUJbSjLyfUp2Q6oHuuCteMZ+5E3q198Bu1V8Dp9YtcJTv/UFX0kzqq9IgPuqNWCw==","signature_status":"signed_v1","signed_at":"2026-08-05T01:36:42.091940Z","signed_message":"canonical_sha256_bytes"},"source_id":"2608.03582","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bf3d21aab1fe983495004f5300b892acbe69be8f21734ab555e73ef777cf070c","sha256:c770df4ac26d531f5bc504c63299d954bdf5266c6e5e21a4ea695ff43c465910"],"state_sha256":"99ea338ef980979eac3b95a411aaa92f403e024daebe13d2bb6a939df04458d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uSzKwBxbfNDYstegmfyUkEiG8aNqwUXgFP7ZfW8Fd09pGRx0G6kcSXFzN3lTmaXRglZsn9CZoq1Ya88gaZVyDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T01:47:18.771160Z","bundle_sha256":"a26ca9dd20ae9c5419be5af50a554f2971353815c6cc444ce4f4cb46910f0653"}}