{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:5FYU6KCQVB5JD4A4LFYHNIYVHM","short_pith_number":"pith:5FYU6KCQ","canonical_record":{"source":{"id":"1706.08763","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-06-27T10:14:19Z","cross_cats_sorted":[],"title_canon_sha256":"a387f631bc08629ca75a34b777d092d1c78ad932cc55b224dfee2052995ea86f","abstract_canon_sha256":"0a398b5b52091e20fa58170165e03cd758c39e696f6f47d0f6349eb8f618775a"},"schema_version":"1.0"},"canonical_sha256":"e9714f2850a87a91f01c597076a3153b252b89d0434449af2772ef9412ff44ee","source":{"kind":"arxiv","id":"1706.08763","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.08763","created_at":"2026-05-18T00:28:45Z"},{"alias_kind":"arxiv_version","alias_value":"1706.08763v2","created_at":"2026-05-18T00:28:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.08763","created_at":"2026-05-18T00:28:45Z"},{"alias_kind":"pith_short_12","alias_value":"5FYU6KCQVB5J","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"5FYU6KCQVB5JD4A4","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"5FYU6KCQ","created_at":"2026-05-18T12:31:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:5FYU6KCQVB5JD4A4LFYHNIYVHM","target":"record","payload":{"canonical_record":{"source":{"id":"1706.08763","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-06-27T10:14:19Z","cross_cats_sorted":[],"title_canon_sha256":"a387f631bc08629ca75a34b777d092d1c78ad932cc55b224dfee2052995ea86f","abstract_canon_sha256":"0a398b5b52091e20fa58170165e03cd758c39e696f6f47d0f6349eb8f618775a"},"schema_version":"1.0"},"canonical_sha256":"e9714f2850a87a91f01c597076a3153b252b89d0434449af2772ef9412ff44ee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:45.818977Z","signature_b64":"nfvu5k7bT+9/klQB6X7EmpKtEcJqjrUej9z/towwM1z9C2/h96map8xd58joLLOa84EqS16ai43W+oNAflJDCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e9714f2850a87a91f01c597076a3153b252b89d0434449af2772ef9412ff44ee","last_reissued_at":"2026-05-18T00:28:45.818283Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:45.818283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.08763","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":"2026-05-18T00:28:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A86f+OC1d9Tcy2K9ehxcbkW72yrXM1g9hYiwfPR8M3PEmakOstQa0YQMiQn0Z8YsHLY/ikil0Va2CNrzIpVTCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T13:02:53.194467Z"},"content_sha256":"0203be9cd776b6a55b96d1eaea9343ac34ca72f3a65f92a64cd0b585d64bf4ee","schema_version":"1.0","event_id":"sha256:0203be9cd776b6a55b96d1eaea9343ac34ca72f3a65f92a64cd0b585d64bf4ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:5FYU6KCQVB5JD4A4LFYHNIYVHM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A scale dependent bias on linear scales: the case for HI intensity mapping at z=1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Aur\\'elie P\\'enin, Mario Santos, Obinna Umeh","submitted_at":"2017-06-27T10:14:19Z","abstract_excerpt":"Neutral hydrogen (HI) will soon be the dark matter tracer observed over the largest volumes of Universe thanks to the 21 cm intensity mapping technique. To unveil cosmological information it is indispensable to understand the HI distribution with respect to dark matter. Using a full one-loop derivation of the power spectrum of HI, we show that higher order corrections change the amplitude and shape of the power spectrum on typical cosmological (linear) scales. These effects go beyond the expected dark matter non-linear corrections and include non-linearities in the way the HI signal traces dar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.08763","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":""},"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":"2026-05-18T00:28:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CDBIrfIJC4R+DnC7ZNYzAYjtjsRcdFvM33697B9LjCOIf0sibrtpAsjv95rGWtQoCs2lEOHD7gRptuXUj3sSAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T13:02:53.194822Z"},"content_sha256":"7ae28e15e6bd46abe5ce03e78613a15f018ee8bced39f276bc1634eabc039aff","schema_version":"1.0","event_id":"sha256:7ae28e15e6bd46abe5ce03e78613a15f018ee8bced39f276bc1634eabc039aff"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5FYU6KCQVB5JD4A4LFYHNIYVHM/bundle.json","state_url":"https://pith.science/pith/5FYU6KCQVB5JD4A4LFYHNIYVHM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5FYU6KCQVB5JD4A4LFYHNIYVHM/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":"2026-06-06T13:02:53Z","links":{"resolver":"https://pith.science/pith/5FYU6KCQVB5JD4A4LFYHNIYVHM","bundle":"https://pith.science/pith/5FYU6KCQVB5JD4A4LFYHNIYVHM/bundle.json","state":"https://pith.science/pith/5FYU6KCQVB5JD4A4LFYHNIYVHM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5FYU6KCQVB5JD4A4LFYHNIYVHM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:5FYU6KCQVB5JD4A4LFYHNIYVHM","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":"0a398b5b52091e20fa58170165e03cd758c39e696f6f47d0f6349eb8f618775a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-06-27T10:14:19Z","title_canon_sha256":"a387f631bc08629ca75a34b777d092d1c78ad932cc55b224dfee2052995ea86f"},"schema_version":"1.0","source":{"id":"1706.08763","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.08763","created_at":"2026-05-18T00:28:45Z"},{"alias_kind":"arxiv_version","alias_value":"1706.08763v2","created_at":"2026-05-18T00:28:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.08763","created_at":"2026-05-18T00:28:45Z"},{"alias_kind":"pith_short_12","alias_value":"5FYU6KCQVB5J","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_16","alias_value":"5FYU6KCQVB5JD4A4","created_at":"2026-05-18T12:31:00Z"},{"alias_kind":"pith_short_8","alias_value":"5FYU6KCQ","created_at":"2026-05-18T12:31:00Z"}],"graph_snapshots":[{"event_id":"sha256:7ae28e15e6bd46abe5ce03e78613a15f018ee8bced39f276bc1634eabc039aff","target":"graph","created_at":"2026-05-18T00:28:45Z","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":"Neutral hydrogen (HI) will soon be the dark matter tracer observed over the largest volumes of Universe thanks to the 21 cm intensity mapping technique. To unveil cosmological information it is indispensable to understand the HI distribution with respect to dark matter. Using a full one-loop derivation of the power spectrum of HI, we show that higher order corrections change the amplitude and shape of the power spectrum on typical cosmological (linear) scales. These effects go beyond the expected dark matter non-linear corrections and include non-linearities in the way the HI signal traces dar","authors_text":"Aur\\'elie P\\'enin, Mario Santos, Obinna Umeh","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-06-27T10:14:19Z","title":"A scale dependent bias on linear scales: the case for HI intensity mapping at z=1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.08763","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":"sha256:0203be9cd776b6a55b96d1eaea9343ac34ca72f3a65f92a64cd0b585d64bf4ee","target":"record","created_at":"2026-05-18T00:28:45Z","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":"0a398b5b52091e20fa58170165e03cd758c39e696f6f47d0f6349eb8f618775a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-06-27T10:14:19Z","title_canon_sha256":"a387f631bc08629ca75a34b777d092d1c78ad932cc55b224dfee2052995ea86f"},"schema_version":"1.0","source":{"id":"1706.08763","kind":"arxiv","version":2}},"canonical_sha256":"e9714f2850a87a91f01c597076a3153b252b89d0434449af2772ef9412ff44ee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e9714f2850a87a91f01c597076a3153b252b89d0434449af2772ef9412ff44ee","first_computed_at":"2026-05-18T00:28:45.818283Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:45.818283Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"nfvu5k7bT+9/klQB6X7EmpKtEcJqjrUej9z/towwM1z9C2/h96map8xd58joLLOa84EqS16ai43W+oNAflJDCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:45.818977Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.08763","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0203be9cd776b6a55b96d1eaea9343ac34ca72f3a65f92a64cd0b585d64bf4ee","sha256:7ae28e15e6bd46abe5ce03e78613a15f018ee8bced39f276bc1634eabc039aff"],"state_sha256":"e8be99502a8ad43468503c1e71ff20e2502179a08b0a067b1710c2288d6fdda8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IJPhOI5UbIMao+HjiT36vixsv+rGOLN3B/Weh/GCHFjVRPd2B6zpFf0DZNNS5bB4VVeXo8YBm95+jfdFlSnoBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T13:02:53.196727Z","bundle_sha256":"0e4dde311752d958aef370717f2d136522c51ec9b1e6d6cf0c979e0674dd76b9"}}