{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:UMN466TRO2ER6FRQGBFPIRJQLJ","short_pith_number":"pith:UMN466TR","canonical_record":{"source":{"id":"1707.03358","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-11T16:46:38Z","cross_cats_sorted":[],"title_canon_sha256":"ec7ae339bee59b7216f02da13106254fb3cb22c400ffff520afdaa091d6ba547","abstract_canon_sha256":"722f7e532dc2d619e9b03764a83b474019a88a95c983c149b199f47fb3dda3fc"},"schema_version":"1.0"},"canonical_sha256":"a31bcf7a7176891f1630304af445305a78cc9c7f33b191988dac032884f24ef3","source":{"kind":"arxiv","id":"1707.03358","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.03358","created_at":"2026-05-18T00:27:13Z"},{"alias_kind":"arxiv_version","alias_value":"1707.03358v3","created_at":"2026-05-18T00:27:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.03358","created_at":"2026-05-18T00:27:13Z"},{"alias_kind":"pith_short_12","alias_value":"UMN466TRO2ER","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"UMN466TRO2ER6FRQ","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"UMN466TR","created_at":"2026-05-18T12:31:46Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:UMN466TRO2ER6FRQGBFPIRJQLJ","target":"record","payload":{"canonical_record":{"source":{"id":"1707.03358","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-11T16:46:38Z","cross_cats_sorted":[],"title_canon_sha256":"ec7ae339bee59b7216f02da13106254fb3cb22c400ffff520afdaa091d6ba547","abstract_canon_sha256":"722f7e532dc2d619e9b03764a83b474019a88a95c983c149b199f47fb3dda3fc"},"schema_version":"1.0"},"canonical_sha256":"a31bcf7a7176891f1630304af445305a78cc9c7f33b191988dac032884f24ef3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:13.327082Z","signature_b64":"IxUtI3No9XFS4cnmxCfbz3ukqxBcLCRwKUjZt1mCFGZcXeqMETNn4hd/XxZrw6WGHK03TVSR3Y3ZYB/YpmatAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a31bcf7a7176891f1630304af445305a78cc9c7f33b191988dac032884f24ef3","last_reissued_at":"2026-05-18T00:27:13.326626Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:13.326626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.03358","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:27:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mJ/NI2XXYojKgmxVKzBFPeWgxXLbDgPuXWeYoAq7nY690iuvDXTQrGYx1hnAvY75MBlAHE/z9CijnKf2e/PWDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T16:55:16.623412Z"},"content_sha256":"9c3aa8a324476b56d78d4ae481425fe5b48c2b19d7fd31ef6847ba767e5d7eca","schema_version":"1.0","event_id":"sha256:9c3aa8a324476b56d78d4ae481425fe5b48c2b19d7fd31ef6847ba767e5d7eca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:UMN466TRO2ER6FRQGBFPIRJQLJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Small-scale structure and the Lyman-$\\alpha$ forest baryon acoustic oscillation feature","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Christopher M. Hirata","submitted_at":"2017-07-11T16:46:38Z","abstract_excerpt":"The baryon-acoustic oscillation (BAO) feature in the Lyman-$\\alpha$ forest is one of the key probes of the cosmic expansion rate at redshifts z~2.5, well before dark energy is believed to have become dynamically significant. A key advantage of the BAO as a standard ruler is that it is a sharp feature and hence is more robust against broadband systematic effects than other cosmological probes. However, if the Lyman-$\\alpha$ forest transmission is sensitive to the initial streaming velocity of the baryons relative to the dark matter, then the BAO peak position can be shifted. Here we investigate"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.03358","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T00:27:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BJ/HHpDNhoox1u4kbpV6swEpo2IrFGed255hMrqdQnlf+hhXfcr6whtFD0jaJtZo65Ch9Qz5SgNRBcZQcv9RBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T16:55:16.624063Z"},"content_sha256":"5bf729f3f56f77152a5d2a8fe59ae940664387fb6814ac8e5f1895a87aab8c9f","schema_version":"1.0","event_id":"sha256:5bf729f3f56f77152a5d2a8fe59ae940664387fb6814ac8e5f1895a87aab8c9f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UMN466TRO2ER6FRQGBFPIRJQLJ/bundle.json","state_url":"https://pith.science/pith/UMN466TRO2ER6FRQGBFPIRJQLJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UMN466TRO2ER6FRQGBFPIRJQLJ/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":"2026-05-19T16:55:16Z","links":{"resolver":"https://pith.science/pith/UMN466TRO2ER6FRQGBFPIRJQLJ","bundle":"https://pith.science/pith/UMN466TRO2ER6FRQGBFPIRJQLJ/bundle.json","state":"https://pith.science/pith/UMN466TRO2ER6FRQGBFPIRJQLJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UMN466TRO2ER6FRQGBFPIRJQLJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:UMN466TRO2ER6FRQGBFPIRJQLJ","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":"722f7e532dc2d619e9b03764a83b474019a88a95c983c149b199f47fb3dda3fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-11T16:46:38Z","title_canon_sha256":"ec7ae339bee59b7216f02da13106254fb3cb22c400ffff520afdaa091d6ba547"},"schema_version":"1.0","source":{"id":"1707.03358","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.03358","created_at":"2026-05-18T00:27:13Z"},{"alias_kind":"arxiv_version","alias_value":"1707.03358v3","created_at":"2026-05-18T00:27:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.03358","created_at":"2026-05-18T00:27:13Z"},{"alias_kind":"pith_short_12","alias_value":"UMN466TRO2ER","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_16","alias_value":"UMN466TRO2ER6FRQ","created_at":"2026-05-18T12:31:46Z"},{"alias_kind":"pith_short_8","alias_value":"UMN466TR","created_at":"2026-05-18T12:31:46Z"}],"graph_snapshots":[{"event_id":"sha256:5bf729f3f56f77152a5d2a8fe59ae940664387fb6814ac8e5f1895a87aab8c9f","target":"graph","created_at":"2026-05-18T00:27:13Z","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"},"paper":{"abstract_excerpt":"The baryon-acoustic oscillation (BAO) feature in the Lyman-$\\alpha$ forest is one of the key probes of the cosmic expansion rate at redshifts z~2.5, well before dark energy is believed to have become dynamically significant. A key advantage of the BAO as a standard ruler is that it is a sharp feature and hence is more robust against broadband systematic effects than other cosmological probes. However, if the Lyman-$\\alpha$ forest transmission is sensitive to the initial streaming velocity of the baryons relative to the dark matter, then the BAO peak position can be shifted. Here we investigate","authors_text":"Christopher M. Hirata","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-11T16:46:38Z","title":"Small-scale structure and the Lyman-$\\alpha$ forest baryon acoustic oscillation feature"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.03358","kind":"arxiv","version":3},"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":"sha256:9c3aa8a324476b56d78d4ae481425fe5b48c2b19d7fd31ef6847ba767e5d7eca","target":"record","created_at":"2026-05-18T00:27:13Z","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":"722f7e532dc2d619e9b03764a83b474019a88a95c983c149b199f47fb3dda3fc","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-07-11T16:46:38Z","title_canon_sha256":"ec7ae339bee59b7216f02da13106254fb3cb22c400ffff520afdaa091d6ba547"},"schema_version":"1.0","source":{"id":"1707.03358","kind":"arxiv","version":3}},"canonical_sha256":"a31bcf7a7176891f1630304af445305a78cc9c7f33b191988dac032884f24ef3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a31bcf7a7176891f1630304af445305a78cc9c7f33b191988dac032884f24ef3","first_computed_at":"2026-05-18T00:27:13.326626Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:13.326626Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IxUtI3No9XFS4cnmxCfbz3ukqxBcLCRwKUjZt1mCFGZcXeqMETNn4hd/XxZrw6WGHK03TVSR3Y3ZYB/YpmatAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:13.327082Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.03358","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9c3aa8a324476b56d78d4ae481425fe5b48c2b19d7fd31ef6847ba767e5d7eca","sha256:5bf729f3f56f77152a5d2a8fe59ae940664387fb6814ac8e5f1895a87aab8c9f"],"state_sha256":"6f903cc1cedc0b040cdd7de8d5d7273bc2ec774e4e927b7db55cbe77ae47dc2b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6kvY2etZKhvHtn70sJOVA11dXabj5DF+ZRFguzMB+YMFiV9XZ9PyF1PAo33JrG09+CyrCHAgEs/7py9u8+Z8Cg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T16:55:16.627414Z","bundle_sha256":"8fc586dbc41dd3b1d499021765161d9015f412219e8d1ca9bdc5133f40b2c343"}}