{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:FMV2BQXYVFOB6MYSWW3DNCN7XK","short_pith_number":"pith:FMV2BQXY","canonical_record":{"source":{"id":"astro-ph/0509766","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-09-26T18:35:18Z","cross_cats_sorted":[],"title_canon_sha256":"fde99713be23cc6409cbcaac023e75d1ba402338a3dfdd0ce3e6c366fa1d2bf3","abstract_canon_sha256":"012f973a09c26c2932b8e6283d0c86949f25c64cb429f8e8f48725b0478ea629"},"schema_version":"1.0"},"canonical_sha256":"2b2ba0c2f8a95c1f3312b5b63689bfbab612d6b6dd4edaa0b5875e659d6b7eab","source":{"kind":"arxiv","id":"astro-ph/0509766","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0509766","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0509766v2","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0509766","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"pith_short_12","alias_value":"FMV2BQXYVFOB","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"pith_short_16","alias_value":"FMV2BQXYVFOB6MYS","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"pith_short_8","alias_value":"FMV2BQXY","created_at":"2026-07-04T17:23:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:FMV2BQXYVFOB6MYSWW3DNCN7XK","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0509766","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-09-26T18:35:18Z","cross_cats_sorted":[],"title_canon_sha256":"fde99713be23cc6409cbcaac023e75d1ba402338a3dfdd0ce3e6c366fa1d2bf3","abstract_canon_sha256":"012f973a09c26c2932b8e6283d0c86949f25c64cb429f8e8f48725b0478ea629"},"schema_version":"1.0"},"canonical_sha256":"2b2ba0c2f8a95c1f3312b5b63689bfbab612d6b6dd4edaa0b5875e659d6b7eab","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:23:48.054038Z","signature_b64":"upBDo8cecESkfIPTCqH01qRNOHp3+R2CAcdLPLG9mbxpyARRRp7OgtHk437NDbY0ifn/q+9AD0JQpBFtiqHGDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2b2ba0c2f8a95c1f3312b5b63689bfbab612d6b6dd4edaa0b5875e659d6b7eab","last_reissued_at":"2026-07-04T17:23:48.053601Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:23:48.053601Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0509766","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":"2026-07-04T17:23:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D45cIzxWW0eZsbVVSXfYni4m6jtFrPIsJ4eNsWAVRgWo46ZsEU+wEe7nmPBKkdNOCG34v62ndJ7tJOzaTi2HDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T00:48:20.834055Z"},"content_sha256":"5096c299b168dc49c09e8a25d5dbe252e249b8002cbb13ac970a8ef1f1c07ad3","schema_version":"1.0","event_id":"sha256:5096c299b168dc49c09e8a25d5dbe252e249b8002cbb13ac970a8ef1f1c07ad3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:FMV2BQXYVFOB6MYSWW3DNCN7XK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"GRB 050904 at redshift 6.3: observations of the oldest cosmic explosion after the Big Bang","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Fernandez-Soto, A. Grazian, D. Malesani, et al, F. Fiore, G. Chincarini, G. Tagliaferri, L.A. Antonelli, L. Stella, M. Della Valle, P. D'Avanzo, S. Campana, S. Covino, V. Testa","submitted_at":"2005-09-26T18:35:18Z","abstract_excerpt":"We present optical and near-infrared observations of the afterglow of the gamma-ray burst GRB 050904. We derive a photometric redshift z = 6.3, estimated from the presence of the Lyman break falling between the I and J filters. This is by far the most distant GRB known to date. Its isotropic-equivalent energy is 3.4x10^53 erg in the rest-frame 110-1100 keV energy band. Despite the high redshift, both the prompt and the afterglow emission are not peculiar with respect to other GRBs. We find a break in the J-band light curve at t_b = 2.6 +- 1.0 d (observer frame). If we assume this is the jet br"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0509766","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/astro-ph/0509766/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":"2026-07-04T17:23:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PnEnyuDA1IleSjFnuX365VAfgN5p7rMrXA41ETH+NRWgzuAX2fVAdynz1JJEmWEe6z8nVilGYnUAuP6BG1mFCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-11T00:48:20.834768Z"},"content_sha256":"7e530fcbca0089d7159f92ef63860a9d6173fa282880bb36c6370eda6d74a84b","schema_version":"1.0","event_id":"sha256:7e530fcbca0089d7159f92ef63860a9d6173fa282880bb36c6370eda6d74a84b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FMV2BQXYVFOB6MYSWW3DNCN7XK/bundle.json","state_url":"https://pith.science/pith/FMV2BQXYVFOB6MYSWW3DNCN7XK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FMV2BQXYVFOB6MYSWW3DNCN7XK/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":"2026-08-11T00:48:20Z","links":{"resolver":"https://pith.science/pith/FMV2BQXYVFOB6MYSWW3DNCN7XK","bundle":"https://pith.science/pith/FMV2BQXYVFOB6MYSWW3DNCN7XK/bundle.json","state":"https://pith.science/pith/FMV2BQXYVFOB6MYSWW3DNCN7XK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FMV2BQXYVFOB6MYSWW3DNCN7XK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:FMV2BQXYVFOB6MYSWW3DNCN7XK","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":"012f973a09c26c2932b8e6283d0c86949f25c64cb429f8e8f48725b0478ea629","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-09-26T18:35:18Z","title_canon_sha256":"fde99713be23cc6409cbcaac023e75d1ba402338a3dfdd0ce3e6c366fa1d2bf3"},"schema_version":"1.0","source":{"id":"astro-ph/0509766","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0509766","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0509766v2","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0509766","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"pith_short_12","alias_value":"FMV2BQXYVFOB","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"pith_short_16","alias_value":"FMV2BQXYVFOB6MYS","created_at":"2026-07-04T17:23:48Z"},{"alias_kind":"pith_short_8","alias_value":"FMV2BQXY","created_at":"2026-07-04T17:23:48Z"}],"graph_snapshots":[{"event_id":"sha256:7e530fcbca0089d7159f92ef63860a9d6173fa282880bb36c6370eda6d74a84b","target":"graph","created_at":"2026-07-04T17:23:48Z","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/astro-ph/0509766/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present optical and near-infrared observations of the afterglow of the gamma-ray burst GRB 050904. We derive a photometric redshift z = 6.3, estimated from the presence of the Lyman break falling between the I and J filters. This is by far the most distant GRB known to date. Its isotropic-equivalent energy is 3.4x10^53 erg in the rest-frame 110-1100 keV energy band. Despite the high redshift, both the prompt and the afterglow emission are not peculiar with respect to other GRBs. We find a break in the J-band light curve at t_b = 2.6 +- 1.0 d (observer frame). If we assume this is the jet br","authors_text":"A. Fernandez-Soto, A. Grazian, D. Malesani, et al, F. Fiore, G. Chincarini, G. Tagliaferri, L.A. Antonelli, L. Stella, M. Della Valle, P. D'Avanzo, S. Campana, S. Covino, V. Testa","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-09-26T18:35:18Z","title":"GRB 050904 at redshift 6.3: observations of the oldest cosmic explosion after the Big Bang"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0509766","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":"sha256:5096c299b168dc49c09e8a25d5dbe252e249b8002cbb13ac970a8ef1f1c07ad3","target":"record","created_at":"2026-07-04T17:23:48Z","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":"012f973a09c26c2932b8e6283d0c86949f25c64cb429f8e8f48725b0478ea629","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-09-26T18:35:18Z","title_canon_sha256":"fde99713be23cc6409cbcaac023e75d1ba402338a3dfdd0ce3e6c366fa1d2bf3"},"schema_version":"1.0","source":{"id":"astro-ph/0509766","kind":"arxiv","version":2}},"canonical_sha256":"2b2ba0c2f8a95c1f3312b5b63689bfbab612d6b6dd4edaa0b5875e659d6b7eab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2b2ba0c2f8a95c1f3312b5b63689bfbab612d6b6dd4edaa0b5875e659d6b7eab","first_computed_at":"2026-07-04T17:23:48.053601Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:23:48.053601Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"upBDo8cecESkfIPTCqH01qRNOHp3+R2CAcdLPLG9mbxpyARRRp7OgtHk437NDbY0ifn/q+9AD0JQpBFtiqHGDQ==","signature_status":"signed_v1","signed_at":"2026-07-04T17:23:48.054038Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0509766","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5096c299b168dc49c09e8a25d5dbe252e249b8002cbb13ac970a8ef1f1c07ad3","sha256:7e530fcbca0089d7159f92ef63860a9d6173fa282880bb36c6370eda6d74a84b"],"state_sha256":"0627bfc16173718a566548efd6ac799131223a760eaed544b7d67122d0516c9d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yC0OoVQ4qtEIiW82hzV9gvfjj3EnQ8biSAbDhqdgAzXCEhiXj0MrqempI/5sqHLgHxfyIi9/opUpCGKpbMLyAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-11T00:48:20.841353Z","bundle_sha256":"c53fa4aa242c9e3c586556f965160b5ff84ff774af3465421ecced854f5be624"}}