{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:STMACUPS4KMS4PESOCYVCCHHSC","short_pith_number":"pith:STMACUPS","canonical_record":{"source":{"id":"1607.07869","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-07-26T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"fde3eea53ea9ff4be1bbefecf3dfee8f963ae35eaa316b5f67ae600b88019a02","abstract_canon_sha256":"304bad9e7af42031656afad3f1a483c9299800e486b759e54d0042b809c79be5"},"schema_version":"1.0"},"canonical_sha256":"94d80151f2e2992e3c9270b15108e790921bc9250be174e586e04afdcb59d2da","source":{"kind":"arxiv","id":"1607.07869","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.07869","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"arxiv_version","alias_value":"1607.07869v1","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.07869","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"pith_short_12","alias_value":"STMACUPS4KMS","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"STMACUPS4KMS4PES","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"STMACUPS","created_at":"2026-05-18T12:30:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:STMACUPS4KMS4PESOCYVCCHHSC","target":"record","payload":{"canonical_record":{"source":{"id":"1607.07869","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-07-26T20:00:00Z","cross_cats_sorted":[],"title_canon_sha256":"fde3eea53ea9ff4be1bbefecf3dfee8f963ae35eaa316b5f67ae600b88019a02","abstract_canon_sha256":"304bad9e7af42031656afad3f1a483c9299800e486b759e54d0042b809c79be5"},"schema_version":"1.0"},"canonical_sha256":"94d80151f2e2992e3c9270b15108e790921bc9250be174e586e04afdcb59d2da","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:12.948966Z","signature_b64":"inQdi7NI1F6W9UNCmv7OZ/Pcvima0hzQZvj8x/UlPlEiG4xrq4SEGkXAWA9+ftI/BQWOuBxlxqrV8mDblMciAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"94d80151f2e2992e3c9270b15108e790921bc9250be174e586e04afdcb59d2da","last_reissued_at":"2026-05-18T00:55:12.948391Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:12.948391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.07869","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":"2026-05-18T00:55:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kTNGDnNCOP5VrSk05msbnY2bgjgsmo2UXHF5Au+drDxx6PGCYX20XX1Bhfbw3G4Z9IUtbit5k3V/Eq9/K4v/CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:37:39.812235Z"},"content_sha256":"125899c88f8223902723b01d6738677d4b65f25ee55e40f347cdef06b4a046fe","schema_version":"1.0","event_id":"sha256:125899c88f8223902723b01d6738677d4b65f25ee55e40f347cdef06b4a046fe"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:STMACUPS4KMS4PESOCYVCCHHSC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Proper Use of the Reduced Speed of Light Approximation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Nickolay Y. Gnedin","submitted_at":"2016-07-26T20:00:00Z","abstract_excerpt":"I show that the Reduced Speed of Light (RSL) approximation, when used properly (i.e. as originally designed - only for the local sources but not for the cosmic background), remains a highly accurate numerical method for modeling cosmic reionization. Simulated ionization and star formation histories from the \"Cosmic Reionization On Computers\" (CROC) project are insensitive to the adopted value of the reduced speed of light for as long as that value does not fall below about 10% of the true speed of light. A recent claim of the failure of the RSL approximation in the Illustris reionization model"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.07869","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":""},"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":"2026-05-18T00:55:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1ZKcvg7iRW4BrQieVajlt/m1aCalfkQu2ZYl5JQwCDUX1IKFfB14xnuSCiR9DTSFCqoJ8qWUayViZ2EflV37Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:37:39.813001Z"},"content_sha256":"62931cca77331d8981a0f5c222618bc7c8f58caeac6d219d54f3accb0104a713","schema_version":"1.0","event_id":"sha256:62931cca77331d8981a0f5c222618bc7c8f58caeac6d219d54f3accb0104a713"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/STMACUPS4KMS4PESOCYVCCHHSC/bundle.json","state_url":"https://pith.science/pith/STMACUPS4KMS4PESOCYVCCHHSC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/STMACUPS4KMS4PESOCYVCCHHSC/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":"2026-08-07T16:37:39Z","links":{"resolver":"https://pith.science/pith/STMACUPS4KMS4PESOCYVCCHHSC","bundle":"https://pith.science/pith/STMACUPS4KMS4PESOCYVCCHHSC/bundle.json","state":"https://pith.science/pith/STMACUPS4KMS4PESOCYVCCHHSC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/STMACUPS4KMS4PESOCYVCCHHSC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:STMACUPS4KMS4PESOCYVCCHHSC","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":"304bad9e7af42031656afad3f1a483c9299800e486b759e54d0042b809c79be5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-07-26T20:00:00Z","title_canon_sha256":"fde3eea53ea9ff4be1bbefecf3dfee8f963ae35eaa316b5f67ae600b88019a02"},"schema_version":"1.0","source":{"id":"1607.07869","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.07869","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"arxiv_version","alias_value":"1607.07869v1","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.07869","created_at":"2026-05-18T00:55:12Z"},{"alias_kind":"pith_short_12","alias_value":"STMACUPS4KMS","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_16","alias_value":"STMACUPS4KMS4PES","created_at":"2026-05-18T12:30:44Z"},{"alias_kind":"pith_short_8","alias_value":"STMACUPS","created_at":"2026-05-18T12:30:44Z"}],"graph_snapshots":[{"event_id":"sha256:62931cca77331d8981a0f5c222618bc7c8f58caeac6d219d54f3accb0104a713","target":"graph","created_at":"2026-05-18T00:55:12Z","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":"I show that the Reduced Speed of Light (RSL) approximation, when used properly (i.e. as originally designed - only for the local sources but not for the cosmic background), remains a highly accurate numerical method for modeling cosmic reionization. Simulated ionization and star formation histories from the \"Cosmic Reionization On Computers\" (CROC) project are insensitive to the adopted value of the reduced speed of light for as long as that value does not fall below about 10% of the true speed of light. A recent claim of the failure of the RSL approximation in the Illustris reionization model","authors_text":"Nickolay Y. Gnedin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-07-26T20:00:00Z","title":"On the Proper Use of the Reduced Speed of Light Approximation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.07869","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":"sha256:125899c88f8223902723b01d6738677d4b65f25ee55e40f347cdef06b4a046fe","target":"record","created_at":"2026-05-18T00:55:12Z","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":"304bad9e7af42031656afad3f1a483c9299800e486b759e54d0042b809c79be5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-07-26T20:00:00Z","title_canon_sha256":"fde3eea53ea9ff4be1bbefecf3dfee8f963ae35eaa316b5f67ae600b88019a02"},"schema_version":"1.0","source":{"id":"1607.07869","kind":"arxiv","version":1}},"canonical_sha256":"94d80151f2e2992e3c9270b15108e790921bc9250be174e586e04afdcb59d2da","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"94d80151f2e2992e3c9270b15108e790921bc9250be174e586e04afdcb59d2da","first_computed_at":"2026-05-18T00:55:12.948391Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:55:12.948391Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"inQdi7NI1F6W9UNCmv7OZ/Pcvima0hzQZvj8x/UlPlEiG4xrq4SEGkXAWA9+ftI/BQWOuBxlxqrV8mDblMciAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:55:12.948966Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.07869","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:125899c88f8223902723b01d6738677d4b65f25ee55e40f347cdef06b4a046fe","sha256:62931cca77331d8981a0f5c222618bc7c8f58caeac6d219d54f3accb0104a713"],"state_sha256":"6cf2befe8d626e3a16191246c370c1c707398daa330685f49087d7688be19b69"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4kdqA3adFd6M/4o5Y2J2iUi+CIM6DGt5N4ns4NdkS+gcj/Jh8vkC+1FNWYz7Pl+s5EYZ9uF1cFYEmcWLx8nyCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:37:39.820812Z","bundle_sha256":"40bec07c18a4b4c914146d10a0bc394a3a3796fd3112787a841ecd872693b9c4"}}