{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:P5RDRLO2UIXL2LOAWJNN4NPVRS","short_pith_number":"pith:P5RDRLO2","canonical_record":{"source":{"id":"2606.06969","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-06-05T06:57:12Z","cross_cats_sorted":[],"title_canon_sha256":"fcb8a843e3bb4c01f13460a56e3c750b2a4ed3a8e9cdff3c13e5f40078a4fed3","abstract_canon_sha256":"e66cfe850f5f4eb693cf6738152289443f0f87b5cc3e81fad08fa8efcc724f78"},"schema_version":"1.0"},"canonical_sha256":"7f6238addaa22ebd2dc0b25ade35f58c882bb5efe43ace8845985c0b190c6ee3","source":{"kind":"arxiv","id":"2606.06969","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.06969","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"arxiv_version","alias_value":"2606.06969v1","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.06969","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"pith_short_12","alias_value":"P5RDRLO2UIXL","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"pith_short_16","alias_value":"P5RDRLO2UIXL2LOA","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"pith_short_8","alias_value":"P5RDRLO2","created_at":"2026-06-08T01:04:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:P5RDRLO2UIXL2LOAWJNN4NPVRS","target":"record","payload":{"canonical_record":{"source":{"id":"2606.06969","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-06-05T06:57:12Z","cross_cats_sorted":[],"title_canon_sha256":"fcb8a843e3bb4c01f13460a56e3c750b2a4ed3a8e9cdff3c13e5f40078a4fed3","abstract_canon_sha256":"e66cfe850f5f4eb693cf6738152289443f0f87b5cc3e81fad08fa8efcc724f78"},"schema_version":"1.0"},"canonical_sha256":"7f6238addaa22ebd2dc0b25ade35f58c882bb5efe43ace8845985c0b190c6ee3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-08T01:04:38.706505Z","signature_b64":"y04ZsjyBHw05FR3cnm8fq4l/H1D5cnlDoXAPiJMEv1UfSoZ/14VE0bdJ2eU0hG0gJ2NqDc+L4CSagZAIPgUwBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f6238addaa22ebd2dc0b25ade35f58c882bb5efe43ace8845985c0b190c6ee3","last_reissued_at":"2026-06-08T01:04:38.705648Z","signature_status":"signed_v1","first_computed_at":"2026-06-08T01:04:38.705648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.06969","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":"2026-06-08T01:04:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LpTVbus5MqHq/PR2TMFVWG/aY9TuqJRZxdtA2ybK7hI6z1krdtItXG2pfUSq1M4TYaxwBjfoXpFQzsY3qAFIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T20:51:53.056617Z"},"content_sha256":"4f8423bb98bbd63b9c00b0b1ac4eb7a92f63d7769116141a991c83d22865fcc0","schema_version":"1.0","event_id":"sha256:4f8423bb98bbd63b9c00b0b1ac4eb7a92f63d7769116141a991c83d22865fcc0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:P5RDRLO2UIXL2LOAWJNN4NPVRS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lyman-$\\alpha$ forest constraints on pure and mixed fuzzy dark matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Jianxiang Liu, Xingchen Zhou, Yan Gong","submitted_at":"2026-06-05T06:57:12Z","abstract_excerpt":"Fuzzy dark matter (FDM), often realized as an ultralight scalar field, can suppress the growth of small-scale structures and could be strictly tested with Lyman-$\\alpha$ forest measurements. In this work, we constrain both pure and mixed FDM models (PFDM and MFDM) using measurements of the one-dimensional (1D) Lyman-$\\alpha$ forest flux power spectrum at $z=5.0$, 4.6, and 4.2. We perform cosmological hydrodynamical simulations with modified initial conditions and construct a two-stage neural network emulator for accurate analysis. The first stage predicts the cold dark matter (CDM) 1D flux pow"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.06969","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/2606.06969/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":"2026-06-08T01:04:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FFes+qmVC2UGWFWmwkapY1n47thqh00sJiAJ+hvUqVq24uR3eC3imD7RU0X7cvIfnLj2K7nXhGpHwVQf0n2TDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T20:51:53.056986Z"},"content_sha256":"19d0b0807ecc276233c299cd51c42fa56ff0470e83d4dfab28c7cc5acab38c18","schema_version":"1.0","event_id":"sha256:19d0b0807ecc276233c299cd51c42fa56ff0470e83d4dfab28c7cc5acab38c18"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/P5RDRLO2UIXL2LOAWJNN4NPVRS/bundle.json","state_url":"https://pith.science/pith/P5RDRLO2UIXL2LOAWJNN4NPVRS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/P5RDRLO2UIXL2LOAWJNN4NPVRS/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":"2026-06-27T20:51:53Z","links":{"resolver":"https://pith.science/pith/P5RDRLO2UIXL2LOAWJNN4NPVRS","bundle":"https://pith.science/pith/P5RDRLO2UIXL2LOAWJNN4NPVRS/bundle.json","state":"https://pith.science/pith/P5RDRLO2UIXL2LOAWJNN4NPVRS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/P5RDRLO2UIXL2LOAWJNN4NPVRS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:P5RDRLO2UIXL2LOAWJNN4NPVRS","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":"e66cfe850f5f4eb693cf6738152289443f0f87b5cc3e81fad08fa8efcc724f78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-06-05T06:57:12Z","title_canon_sha256":"fcb8a843e3bb4c01f13460a56e3c750b2a4ed3a8e9cdff3c13e5f40078a4fed3"},"schema_version":"1.0","source":{"id":"2606.06969","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.06969","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"arxiv_version","alias_value":"2606.06969v1","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.06969","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"pith_short_12","alias_value":"P5RDRLO2UIXL","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"pith_short_16","alias_value":"P5RDRLO2UIXL2LOA","created_at":"2026-06-08T01:04:38Z"},{"alias_kind":"pith_short_8","alias_value":"P5RDRLO2","created_at":"2026-06-08T01:04:38Z"}],"graph_snapshots":[{"event_id":"sha256:19d0b0807ecc276233c299cd51c42fa56ff0470e83d4dfab28c7cc5acab38c18","target":"graph","created_at":"2026-06-08T01:04:38Z","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/2606.06969/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Fuzzy dark matter (FDM), often realized as an ultralight scalar field, can suppress the growth of small-scale structures and could be strictly tested with Lyman-$\\alpha$ forest measurements. In this work, we constrain both pure and mixed FDM models (PFDM and MFDM) using measurements of the one-dimensional (1D) Lyman-$\\alpha$ forest flux power spectrum at $z=5.0$, 4.6, and 4.2. We perform cosmological hydrodynamical simulations with modified initial conditions and construct a two-stage neural network emulator for accurate analysis. The first stage predicts the cold dark matter (CDM) 1D flux pow","authors_text":"Jianxiang Liu, Xingchen Zhou, Yan Gong","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-06-05T06:57:12Z","title":"Lyman-$\\alpha$ forest constraints on pure and mixed fuzzy dark matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.06969","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":"sha256:4f8423bb98bbd63b9c00b0b1ac4eb7a92f63d7769116141a991c83d22865fcc0","target":"record","created_at":"2026-06-08T01:04:38Z","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":"e66cfe850f5f4eb693cf6738152289443f0f87b5cc3e81fad08fa8efcc724f78","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2026-06-05T06:57:12Z","title_canon_sha256":"fcb8a843e3bb4c01f13460a56e3c750b2a4ed3a8e9cdff3c13e5f40078a4fed3"},"schema_version":"1.0","source":{"id":"2606.06969","kind":"arxiv","version":1}},"canonical_sha256":"7f6238addaa22ebd2dc0b25ade35f58c882bb5efe43ace8845985c0b190c6ee3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7f6238addaa22ebd2dc0b25ade35f58c882bb5efe43ace8845985c0b190c6ee3","first_computed_at":"2026-06-08T01:04:38.705648Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-08T01:04:38.705648Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"y04ZsjyBHw05FR3cnm8fq4l/H1D5cnlDoXAPiJMEv1UfSoZ/14VE0bdJ2eU0hG0gJ2NqDc+L4CSagZAIPgUwBw==","signature_status":"signed_v1","signed_at":"2026-06-08T01:04:38.706505Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.06969","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f8423bb98bbd63b9c00b0b1ac4eb7a92f63d7769116141a991c83d22865fcc0","sha256:19d0b0807ecc276233c299cd51c42fa56ff0470e83d4dfab28c7cc5acab38c18"],"state_sha256":"7c9506c3f4855cc02dc67dd3b1fcde0e5a46b2b88f059251c17c00da30e77691"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"llJhXnApysc7zJUJ+tJiDKIbr0tNJ9p5ztN7BrC47jlGC9JbnMNAgJgpSAxN4Wr8pNcqUQpXYzX+GPrwV6aRDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T20:51:53.059255Z","bundle_sha256":"aa9337611788b0c989d5201ffb4c35e4c67ac153d81506016561a1f7ed3601c8"}}